CN109020269A - Processing method of titanium extraction tailings and products thereof, preparation method of cement additive and products thereof, cement and preparation method thereof - Google Patents
Processing method of titanium extraction tailings and products thereof, preparation method of cement additive and products thereof, cement and preparation method thereof Download PDFInfo
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- CN109020269A CN109020269A CN201811010618.0A CN201811010618A CN109020269A CN 109020269 A CN109020269 A CN 109020269A CN 201811010618 A CN201811010618 A CN 201811010618A CN 109020269 A CN109020269 A CN 109020269A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
- C04B7/19—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention provides processing methods of a kind of titanium extraction tailings and products thereof, the preparation method of cement additive and products thereof, cement and preparation method thereof, are related to offal treatment and application technology as the second resource field.The processing method calcines titanium extraction tailings, the titanium extraction tailings that obtain that treated.The processing method of the titanium extraction tailings alleviates the prior art and lacks a kind of at low cost, simple process and the technical issues of do not generate the processing method of titanium extraction tailings of contaminated wastewater；It, should treated that titanium extraction tailings can be used for preparing cement additive the present invention also provides this method titanium extraction tailings that are prepared that treated；The present invention also provides the preparation method of cement additive and cement additives；Cement and preparation method thereof comprising the cement additive, the preparation method of above-mentioned cement alleviate the technical problem that cement clinker consumption is big, at high cost in prior art cement preparation method.
Description
Technical field
The present invention relates to offal treatment and application technology as the second resource fields, in particular to the processing of titanium extraction tailings
Method and products thereof, preparation method of cement additive and products thereof, cement and preparation method thereof.
Background technique
With the development of economy with the expansion of metallurgy industry scale, the discharge amount of metallurgy industry titanium-containing blast furnace slag is increasingly
Greatly, solid waste is accumulated, and is seriously destroyed environment simultaneously and is caused the waste of resource.Such as: it climbs steel and discharges titaniferous height every year
About 3,000,000 tons of clinker, content of titanium dioxide is about 20-26% in titanium-containing blast furnace slag, in order to make full use of in titanium-containing blast furnace slag
Titanium resource climbs steel application high temperature cabonization-low temperature chlorination producing titanium tetrachloride t 5 bx technique and carries out proposing titanium, but the work to titanium-containing blast furnace slag
Skill still generates a large amount of titanium extraction tailings after extracting titanium resource, and chlorinity is about 2-4% in titanium extraction tailings composition, and free carbon content is about
6-10%, will reach " green ecological " technique that blast furnace slag proposes the full industrial chain of titanium, and titanium extraction tailings need to be utilized on a large scale.
In recent years it has been developed that the processing or reuse method of many titanium extraction tailings, but introduce washing step
Suddenly, the waste of water resource is not only caused, but also a large amount of chlorine-contained wastewater can be generated after handling, the wastewater treatment difficulty is big and locates
It manages at high cost, causes environmental pollution, and need additional step that baking step is removed or introduced to carbon and be dried, work
Skill process is longer, generates higher cost；In the preparation process of existing cement, cement clinker consumption is larger, and clinker
Production technology cause serious pollution to the environment, it is at high cost, therefore cause the higher situation of cement cost indirectly.How cement is reduced
The technical issues of cost and current urgent need to resolve；Therefore, develop it is a kind of effectively titanium extraction tailings can be handled, it is at low cost,
Simple process, and the titanium extraction tailings processing method of contaminated wastewater is not generated, there is important economic significance and environment protection significance.
In view of this, the present invention is specifically proposed.
Summary of the invention
One of the objects of the present invention is to provide a kind of processing method of titanium extraction tailings, this method forges titanium extraction tailings
It burns, the titanium extraction tailings that obtain that treated.This method alleviates the prior art and lacks a kind of at low cost, simple process, does not generate useless
The technical issues of mentioning titanium waste slag treatment method of water pollution.
The second purpose of the present invention is to provide the above-mentioned titanium extraction tailings processing method titanium extraction tailings that are prepared that treated,
It should treated that titanium extraction tailings can be used for preparing cement additive.
The three of the object of the invention are to provide a kind of preparation method of cement additive, and this method will be treated
Titanium extraction tailings refinement, obtains cement additive, and this method has the advantage of simple process and low cost.
The fourth object of the present invention is to provide the cement mixing that the preparation method of above-mentioned cement additive is prepared
Material, the cement additive are at low cost.
The fifth object of the present invention is to provide the cement comprising above-mentioned cement additive, which equally has cost
Low advantage.
The sixth object of the present invention is to provide the preparation method of above-mentioned cement, and this method is by clinker, cement mixing
Material and the mixing of optional additive, obtain cement；The preparation method simple process and low cost of above-mentioned cement.
The seventh object of the present invention is to provide the concrete comprising above-mentioned cement additive or above-mentioned cement, the coagulation
Soil equally has advantage at low cost.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of processing method of titanium extraction tailings, processing method include the following steps: to calcine titanium extraction tailings, obtain everywhere
Titanium extraction tailings after reason.
On the basis of the present invention program, calcining includes the following steps: that by titanium extraction tailings be 500-1200 in calcination temperature
DEG C, calcination time is calcined under the conditions of being 20-220min, the titanium extraction tailings that obtain that treated；
Preferably, calcination temperature is 600-1100 DEG C, calcination time 30-210min；
Preferably, calcination temperature is 600-1000 DEG C, calcination time 30-200min.
On the basis of the present invention program, calcining includes the following steps:
It is 600-700 DEG C in calcination temperature by titanium extraction tailings and does not include 700 DEG C, calcination time is 60-150min condition
Lower calcining；Or,
It is 700-900 DEG C in calcination temperature by titanium extraction tailings and does not include 900 DEG C, calcination time is 60-150min condition
Lower calcining；Or,
By titanium extraction tailings calcination temperature be 900 DEG C -1000 DEG C, calcination time be 30-100min under the conditions of calcine.
Second aspect provides the processing method titanium extraction tailings that are prepared that treated of above-mentioned titanium extraction tailings.
The third aspect provides a kind of preparation method of cement additive, and including the following steps: will be treated
Titanium extraction tailings refinement, obtains cement additive；
Preferably, by treated, titanium extraction tailings are refined to specific surface area >=300m2/kg。
On the basis of the present invention program, by treated, titanium extraction tailings are refined to specific surface area >=400m2/kg；
Preferably, the method for refinement is grinding.
Fourth aspect provides the cement additive that the preparation method of above-mentioned cement additive is prepared.
5th aspect, provides the cement comprising above-mentioned cement additive.
6th aspect, provides the preparation method of above-mentioned cement, by clinker, cement additive and optional adds
Add agent to mix, obtains cement；
Preferably, the quality of cement additive is the 1-20% of cement clinker quality；
Preferably, clinker is Portland clinker.
7th aspect, provides the concrete comprising above-mentioned cement additive or above-mentioned cement.
Compared with the prior art, the invention has the following beneficial effects:
(1) processing method of titanium extraction tailings provided by the invention, the main component of the raw material titanium extraction tailings of this method application
For CaO, MgO, SiO2、TiO2、Al2O3Deng ingredient is more similar to clinker, but in titanium extraction tailings, contains about 5-
12% free carbon, also containing the chlorine element of 2-6%, both constituent contents are higher to be not suitable as clinker or cement,
It will affect the performance of cement；Wherein, carbon exists in the form of free carbon, and chlorine element is with Cl2, HCl or TiCl4Form exists, by
Contain a large amount of micropore inside titanium extraction tailings, wherein most micropores are nanoscale, Cl during titanium extracting technology2, HCl or TiCl4
Micropore surface is remained in inside the micropore of titanium extraction tailings or is adsorbed on due to that cannot escape completely.Micropore inside titanium extraction tailings
The main reason for formation is that titanium tetrachloride enters gas phase in gaseous form and purified during mentioning titanium, the tailings left with
TiCl4A large amount of spillings, the position of titanium elements originally forms a large amount of pit-hole and gap.Titanium extraction tailings are direct in the present invention
It is directly entered and forges without passing through traditional washing dechlorination, therefore without water removal is dried after washing into calcining step
Process is burnt, the carbon burning conversion being present in titanium extraction tailings in calcination process is CO2, achieve the purpose that remove carbon；
Cl2, HCl or TiCl4Since heated loss in gaseous form is gone out, and with the carry out titanium extraction tailings of calcination process inside
Micropore in glass phase structure is destroyed, the Cl in titanium extraction tailings inside micropore2, HCl or TiCl4It can further escape, further
Achieve the purpose that dechlorination, titanium extraction tailings dechlorinate and technique except carbon in, do not introduce the step of washing and drying, therefore technique is more
Simply, and not contaminated wastewater is generated；The processing method that the present invention mentions titanium waste residue alleviates the prior art and lacks a kind of technique letter
Singly and the technical issues of mentioning titanium waste slag treatment method of contaminated wastewater is not generated, environmental pollution has been effectively relieved, at low cost, technique
Simply, and not contaminated wastewater is generated, it is more environmentally friendly.
(2) treated titanium extraction tailings provided by the invention can be used in preparing cement additive, above-mentioned cement
The preparation method of mixing material is since the titanium extraction tailings that apply that treated are as raw material, and cost is relatively low, furthermore this method
Only refine a step, therefore simple process；Cement additive that this method is prepared includes above-mentioned cement mixture
The cement of material, the concrete comprising above-mentioned cement additive or cement similarly have advantage at low cost；Above-mentioned cement
Cement additive can substitute a part of clinker in preparation method, to reduce the accounting of clinker, technique also compared with
To be simple, therefore this method process costs and cost of material are relatively low.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.
According to the first aspect of the invention, a kind of processing method of titanium extraction tailings, processing method include the following steps: by
Titanium extraction tailings are calcined, the titanium extraction tailings that obtain that treated.
The blast furnace slag that content of titanium dioxide is 20% or more passes through high temperature cabonization-low temperature chlorination producing titanium tetrachloride t 5 bx technique
Afterwards, the chlorination tailings given off, as titanium extraction tailings.The content of titanium dioxide of typical blast furnace slag is about 20-26%.Blast furnace slag
The tailings generated after high temperature cabonization-low temperature chlorination extracts titanium tetrachloride, that is, belong to titanium extraction tailings.Titanium extraction tailings it is main at
It is divided into CaO, MgO, SiO2、TiO2、 Al2O3Deng, ingredient is more similar to clinker, but in titanium extraction tailings, containing big
The free carbon of about 5-12%, free carbon exist with simple substance form, and also containing the chlorine element of 2-6%, both constituent contents are higher
It is not suitable as clinker or cement, will affect the performance of cement；Wherein, carbon exists in the form of free carbon, chlorine element
With Cl2, HCl or TiCl4Form exists, and due to containing a large amount of micropore inside titanium extraction tailings, and most micropores are nanoscale,
Its internal residual chlorine element is difficult to be removed.The main reason for micropore inside titanium extraction tailings is formed is TiCl during mentioning titanium4
Enter gas phase in gaseous form and purified, the tailings left with titanium tetrachloride a large amount of spillings, original titanium elements
Position forms a large amount of pit-hole and gap, and usually most is nanoscale, Cl2, HCl or TiCl4Due to that cannot escape completely
And it remains in and inside micropore or is adsorbed on micropore surface.
Calcining, is the process of high-temperature process, can change the chemical property of substance and/or physical by this kind of mode
Matter.In calcination process of the present invention, the carbon burning conversion being present in titanium extraction tailings is CO2, reach and remove carbon
Purpose；Cl2, HCl or TiCl4Since heated loss in gaseous form is gone out, and in the lasting titanium extraction tailings of calcination process
The glass phase structure in portion is further destroyed, the Cl inside titanium extraction tailings2, HCl or TiCl4It can further escape, further reach
To the purpose of dechlorination.It should keep divulging information in calcination process, the loss for the gas that the entrance and calcining for being conducive to air generate.It forges
It burns process and has effectively removed chlorine element and carbon in titanium extraction tailings, furthermore titanium extraction tailings are directly entered calcination process, do not draw
The step of entering washing dechlorination, therefore the water removal phase additional without progress, therefore technique is simpler, cost is lower, and not
Generate contaminated wastewater；Processing method process costs and the cost of material for mentioning titanium waste residue are relatively low, and environmental pollution has been effectively relieved.
In a preferred embodiment, calcining includes the following steps: that by titanium extraction tailings be 500- in calcination temperature
1200 DEG C, calcination time is calcined under the conditions of being 20-220min, the titanium extraction tailings that obtain that treated.
Typical but non-limiting calcination temperature is for example are as follows: 500 DEG C, 600 DEG C, 700 DEG C, 800 DEG C, 900 DEG C, 1000 DEG C,
1100 DEG C or 1200 DEG C etc..
Typical but non-limiting calcination time is for example are as follows: 20min, 40min, 60min, 80min, 100min,
120min, 140min, 160min, 180min, 200min or 220min etc..
Calcination temperature has an impact to the extent of the destruction of the glass phase structure inside titanium extraction tailings, the content meeting of glass phase structure
It influences to be prepared that treated the activity of titanium extraction tailings, and then influences the cement mixture of subsequent applications titanium extraction tailings preparation
The activity of material.Optimize calcination temperature and calcination time can chlorinity, carbon content and hydration activity index to calcined product into
Row more effectively controls, and in the case where optimizing calcination temperature, calcination time also does the adjustment of adaptability.Titanium is mentioned since treated
Tailings be mainly used for it is subsequent prepare cement additive, and cement carbon content will affect loss on ignition, the performance parameter regulation of cement
Middle chlorinity should be lower than 0.06%, with the lengthening of calcination temperature increased with the time, be conducive to will lead to glass while dechlorination
Glass phase structure content is lower, and the destruction of glass phase structure can reduce the activity of material, optimizes suitable calcination parameter, to guarantee chlorine
Content and glass phase structure content accounting are floated in a certain range, and treated that titanium extraction tailings performance is more suitable for is subsequent for acquisition
Prepare the performance requirement of cement additive；Also can guarantee adequately to calcine relatively, not will lead to the process time too long causes
The excess waste of the energy, while reducing cost, acquisition treated titanium extraction tailings it is subsequent prepare cement additive when,
Performance is also more preferable.
Preferably, calcination temperature is 600-1100 DEG C, calcination time 30-210min.
Suitable parameter is advanced optimized, is further ensured that chlorinity and glass phase structure content accounting in a certain range
It floats, so that bigger accounting is added in subsequent cement additive obtained during preparing cement, preferably reduces cost.
Preferably, calcination temperature is 600-1000 DEG C, calcination time 30-200min.
Under the conditions of above-mentioned calcination temperature, calcination time, the cement additive of acquisition can sufficiently remove C element, chlorine
Constituent content and glass phase structure content be opposite to be more suitable for subsequent preparing cement additive, the cement additive of subsequent preparation
In cement production process while guaranteeing the performance requirement of cement, bigger amount can be put into, water is more greatly reduced
Mud cost.
In a preferred embodiment, calcining includes the following steps:
It is 600-700 DEG C in calcination temperature by titanium extraction tailings and does not include 700 DEG C, calcination time is 60-150min condition
Lower calcining；Or, being 700-900 DEG C in calcination temperature by titanium extraction tailings and not including 900 DEG C, calcination time is 60-150min item
It is calcined under part；Or, by titanium extraction tailings calcination temperature be 900 DEG C -1000 DEG C, calcination time be 30-100min under the conditions of forge
It burns.
In calcination process, the oxygen in free carbon and air is converted into CO by combustion system2Removing, phosphorus content is low can
Keep the loss on ignition of the subsequent cement additive with its preparation smaller, improve the performance of cement additive, calcining is appropriately extended
Time, usual carbon can be removed more fully hereinafter.The removal of chlorine element and the active of treated titanium extraction tailings have with calcination temperature
It closes, when calcination temperature is lower, the main titanium extraction tailings surface that removes is with chlorine existing for physical adsorption way, such as Cl2、HCl
Or TiCl4, the glass phase extent of the destruction inside titanium extraction tailings is lower, and chlorine element removal efficiency is relatively low, but after the processing obtained
Titanium extraction tailings hydration activity index it is higher；When titanium extraction tailings are in higher temperature calcination, the glass of titanium extraction tailings at this time
By heavier destruction, the chlorine element being present in pit-hole and gap inside glass phase structure starts to release phase structure,
Chlorine element removal rate is higher, but treated that titanium extraction tailings hydration activity index is lower；Wherein, titanium extraction tailings are in calcination temperature
600 DEG C -700 DEG C and do not include 700 DEG C, when calcination time is 60-150min, the chlorinity of calcined product is about 0.2-0.5%,
And usually carbon content < 1%；Titanium extraction tailings for 700-900 DEG C and do not include 900 DEG C in calcination temperature, calcination time 60-
150min, the chlorinity of calcined product are about 0.1-0.2%, the general < 1% of carbon content；Titanium extraction tailings are 900- in calcination temperature
1000 DEG C, calcination time 30-100min, the chlorinity of calcined product usual < 0.06%, carbon content < 1%；Therefore after
The hydration activity index requirements of the cement of continuous preparation adjust calcine technology parameter, prepare opposite with required hydrated cementitious activity index
Close treated titanium extraction tailings, and then the cement additive of different performance is prepared, to increase subsequent cement as far as possible
The dosage of cement additive in preparation process achievees the purpose that save cost of material.
Second aspect provides the processing method titanium extraction tailings that are prepared that treated of above-mentioned titanium extraction tailings.
Titanium extraction tailings that above-mentioned titanium extraction tailings processing method is prepared that treated, chlorinity and carbon content are lower,
It can be used to prepare cement additive.
The third aspect provides a kind of preparation method of cement additive, and including the following steps: will be treated
Titanium extraction tailings refinement, obtains cement additive.
Refinement, the particle of solid is become smaller, i.e., the process that becomes larger of specific surface area, bigger specific surface area are conducive to materiality
The performance of energy, shows better hydration activity.Typical but non-limiting thinning method is for example are as follows: grinding.
Cement additive can be when preparing cement for substituting part for preparing the spike of cement or concrete
Clinker blends, and reduces the usage rate of clinker, and then reduce the cost of material of cement；Or directly preparing coagulation
It blends when native, to reduce the dosage of cement.
By treated, titanium extraction tailings are refined, it can be made to expose bigger specific surface area, the bigger ratio of exposure after refinement
Surface area prepares cement as cement additive or is further used as concrete, and contact surface is bigger when use mixes with water,
It reacts more abundant, bigger hydration activity index can be shown, increase its activity, obtained cement additive hydration activity refers to
Number is higher.
Preferably, by treated, titanium extraction tailings are refined to specific surface area >=300m2/kg。
Specific surface area after advanced optimizing calcined product refinement, increases surface area, the water of cement additive can be improved
Change activity.
In a preferred embodiment, by treated, titanium extraction tailings are refined to specific surface area >=400m2/kg。
It is preferred that bigger specific surface area, enables to cement additive hydration activity index higher, and then subsequent
When preparing cement using the cement additive, achieve the purpose that the hydration activity index for improving cement.
Preferably, the method for refinement is grinding.
Grinding process is more mature, and its equipment and technique are more suitble to the refinement of the slag of titanium extraction tailings etc.
Fourth aspect provides the cement additive that the preparation method of above-mentioned cement additive is prepared.
Cost is relatively low for the cement additive that the preparation method of above-mentioned cement additive obtains, and chlorinity is lower, and carbon contains
It measures relatively low, has certain hydration activity, can be used to prepare cement.
5th aspect, provides the cement comprising above-mentioned cement additive.
In cement prescription comprising above-mentioned cement additive, the clinker of part is substituted with cement additive, because
The dosage accounting of this clinker is lower, there is advantage at low cost.
6th aspect, provides the preparation method of above-mentioned cement, by clinker, cement additive and optional adds
Add agent to mix, obtains cement.
Clinker is to be configured to raw material by proper proportion using lime stone and clay, ferriferous raw material as primary raw material, is passed through
The semi-finished product of drying-preheating-decomposition-heat release-firing-cooling and acquisition, the environmental pollution that preparation process generates are larger.Cement
Clinker accounting in cement is larger, is the main materials of cement.
Additive is added in cement for improving the auxiliary material of some performances of cement.
Preferably, the quality of cement additive is the 1-20% of cement clinker quality.
The above-mentioned cement additive that the present invention obtains, performance is similar to clinker, can partially substitute clinker,
The dosage accounting in cement for reducing clinker, reduces the market demand of clinker, while alleviating clinker system
The environmental pollution that standby process generates.The quality of cement additive is the 1-20% of cement clinker quality, can be greatly
Reduce the amount ratio of clinker.Typical but non-limiting cement additive dosage be, for example, cement clinker quality 1%,
2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%,
18%, 19% or 20% etc..
Preferably, clinker is Portland clinker；
Since the component of the cement additive and Portland clinker of the invention being prepared is increasingly similar, use
It substitutes Portland clinker, and then prepares portland cement, is capable of the additive amount of opposite increase cement additive, more greatly
The dosage accounting for reducing to amplitude Portland clinker, is greatly reduced cement cost.Therefore it is preferable to use cement it is ripe
Material is Portland clinker, prepares portland cement.
The preparation method of above-mentioned cement is lower compared to the dosage of traditional handicraft clinker, and preparation process is also relatively simple,
Therefore cost of material and process costs are relatively low.
7th aspect, provides the concrete comprising above-mentioned cement additive or above-mentioned cement.
The present invention provides a kind of concrete comprising above-mentioned cement additive or above-mentioned cement, the concrete is due to water
Mud is at low cost, and equally has advantage at low cost.
The present invention is further illustrated below by specific embodiment and comparative example, it should be understood, however, that, these implementations
Example, which is only used for being described in more detail, to be used, and but should not be understood as present invention is limited in any form.
Embodiment 1
Calcining: taking in titanium extraction tailings 1kg investment calcination reactor, place into high-temperature roasting furnace, is 600 DEG C in temperature,
Slightly blow-on door maintains the circulation of air, and calcines 120min, the titanium extraction tailings that obtain that treated.
Embodiment 2
Calcining: taking in titanium extraction tailings 1kg investment calcination reactor, place into high-temperature roasting furnace, is 800 DEG C in temperature,
Slightly blow-on door maintains the circulation of air, and calcines 60min, the titanium extraction tailings that obtain that treated.
Embodiment 3
Calcining: taking in titanium extraction tailings 1kg investment calcination reactor, place into high-temperature roasting furnace, is 1000 DEG C in temperature,
Slightly blow-on door maintains the circulation of air, and calcines 90min, the titanium extraction tailings that obtain that treated.
Embodiment 4
Calcining: taking in titanium extraction tailings 1kg investment calcination reactor, place into high-temperature roasting furnace, is 700 DEG C in temperature,
Slightly blow-on door maintains the circulation of air, and calcines 60min, the titanium extraction tailings that obtain that treated.
Embodiment 5
Embodiment 5 and the difference of embodiment 1 are only that calcination temperature is 500 DEG C.
Embodiment 6
Embodiment 6 and the difference of embodiment 3 be only that, calcination time 20min.
Embodiment 7
Embodiment 7 and the difference of embodiment 3 are only that calcination temperature is 1100 DEG C.
Embodiment 8-14
By the embodiment 1-7 titanium extraction tailings refinement that obtains that treated, thinning method: grinding is to specific surface on ball mill
Product >=400m2/kg。
Embodiment 15-21
By the embodiment 1-7 titanium extraction tailings refinement that obtains that treated, thinning method: grinding is to specific surface on ball mill
Product >=300m2/kg。
Comparative example 1
Comparative example 1 and the difference of embodiment 7 are only that calcination temperature is 400 DEG C.
Test example
" cement and coagulation to be used for according to GB/T18046-2008 to the cement additive that 8-21 of the embodiment of the present invention is obtained
Ground granulated blast furnace slag in soil " industry standard methods are detected, and density, fluidity ratio, water content, sulfur trioxide contain
The parameters such as amount, loss on ignition, vitreum content meet professional standard, carry out chlorinity, carbon content and water by above-mentioned standard method
Change activity index measurement, testing result see the table below 1.
The cement additive that embodiment 8-21 is obtained is prepared into cement by the method for the present invention, the cement of preparation is with quality
Score meter includes 90 parts of clinker, 10 parts of cement additive and 5 parts of land plaster, to 14 parts of obtained cement according to GB/
T18046-2008 " for the ground granulated blast furnace slag in cement and concrete " industry standard methods are detected, density, stream
The parameters such as dynamic degree ratio, water content, sulfur trioxide content, loss on ignition, chlorinity, vitreum content meet professional standard, for not
With the qualified cement of label.
1 embodiment of table and comparative example cement additive chlorinity, carbon content and hydration activity index testing result
Since the present invention is mainly handled titanium extraction tailings, titanium extraction tailings that treated can be used to prepare cement mixed
Condensation material, the cement additive being prepared are preparing cement use.Cement additive is in addition to chlorinity and water after detection
Change parameters other than activity index and meets professional standard；Since cement additive prepared by the present invention is intended only as part
It is added for substituting high-cost clinker, it is not required that the accounting of additional amount, as long as the cement prepared needed for meeting
Under the premise of performance parameter, Performance Parameters symbol later is prepared in raising cement additive dosage, i.e. incorporation as far as possible
Close the performance parameter standard of corresponding cement.Therefore, the chlorinity and aquation for the cement additive that the present invention obtains are living
Sex index not necessarily complies fully with the standard of slag micropowder, optimizes compounding water according to every index of the cement additive of acquisition
Adding proportion when mud, as long as standard compliant cement is made, reach reduce cement clinker consumption ratio, can reach reduction at
This effect.
Firstly, by 1 testing result of table it is visible by the embodiment 1-7 titanium extraction tailings that are prepared that treated after refinement
The performance parameter of the cement additive of embodiment 8-14 obtained is preferable, cement mixture preparation method for material preparation of the invention
Obtained cement additive chlorinity, carbon content are lower.Wherein, carbon content is the important parameter for influencing loss on ignition, detection
As a result visible carbon content is lower, better performances, can adjust cement additive made from embodiment 8-14 according to chlorinity and exist
Accounting when cement obtains the cement of performance qualification.Secondly, by the testing result of embodiment 8-14 as it can be seen that in the present invention
Adjustment calcination temperature and time, can obtain the cement mixing of different chlorinities, carbon content and hydration activity index in range
Material.
By the testing result of embodiment 8 in table 1 as it can be seen that the cement additive carbon obtained after the calcining of 8 method of embodiment
Content is lower, and chlorinity is relatively slightly higher, but hydration activity index is higher, and hydration activity index be in cement performance parameter compared with
For crucial parameter, due in the process for preparation of cement, the adding proportion of cement additive be it is controllable, therefore, this water
After the change higher cement additive of activity index is mixed with cement other components, as long as guaranteeing that overall chlorinity complies with standard
The demand of the addition ratio of clinker when reducing cement can be met as cement additive.
By the testing result of embodiment 9 in table 1 as it can be seen that containing according to cement additive chlorine prepared by the method for embodiment 9
Amount and carbon content are relatively lower, but hydration activity index has a degree of decline simultaneously, can be according to its hydration activity index tune
The ratio of whole addition is as cement raw material.
By the testing result of embodiment 10 in table 1 as it can be seen that 10 method of embodiment obtain cement additive chlorinity and
Carbon content is lower, but hydration activity index is slightly poor, therefore, according to its hydration activity index, calculates suitable ratio as water
The raw material of mud.
By the testing result of embodiment 8-14 in table 1 and the testing result comparison of embodiment 15-21 as it can be seen that comparing table after refinement
Area is bigger, and hydration activity index is higher.
By the comparison of the testing result of embodiment 8 in table 1 and embodiment 12 as it can be seen that reducing calcination temperature, cement can be improved
The hydration activity index of mixing material.
By the comparison of the testing result of embodiment 8 in table 1 and embodiment 13 as it can be seen that reducing calcination time, water also can be improved
Change activity index.
By the comparison of the testing result of embodiment 8 in table 1 and embodiment 14 as it can be seen that improving calcination temperature, chlorinity and carbon contain
Amount can further decrease, but hydration activity index can also reduce.
It is compared by the testing result of embodiment 8-21 in table 1 and comparative example 1 as it can be seen that calcination temperature crosses the excessively high system of low chlorine content
Standby obtained cement additive, it is difficult to meet cement demand.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of processing method of titanium extraction tailings, which is characterized in that the treating method comprises following steps: by titanium extraction tailings into
Row calcining, the titanium extraction tailings that obtain that treated.
2. the processing method of titanium extraction tailings described in accordance with the claim 1, which is characterized in that be in calcination temperature by titanium extraction tailings
500-1200 DEG C, calcination time is calcined under the conditions of being 20-220min, the titanium extraction tailings that obtain that treated；
Preferably, the calcination temperature is 600-1100 DEG C, calcination time 30-210min；
Preferably, the calcination temperature is 600-1000 DEG C, calcination time 30-200min.
3. the processing method of titanium extraction tailings according to claim 1 or 2, which is characterized in that the calcining includes following step
It is rapid:
It is 600-700 DEG C in calcination temperature by titanium extraction tailings and does not include 700 DEG C, calcination time is forged under the conditions of being 60-150min
It burns；Or,
It is 700-900 DEG C in calcination temperature by titanium extraction tailings and does not include 900 DEG C, calcination time is forged under the conditions of being 60-150min
It burns；Or,
By titanium extraction tailings calcination temperature be 900 DEG C -1000 DEG C, calcination time be 30-100min under the conditions of calcine.
4. according to the processing method of any one of the claim 1-3 titanium extraction tailings titanium extraction tailings that are prepared that treated.
5. a kind of preparation method of cement additive, which comprises the steps of: by place as claimed in claim 4
Titanium extraction tailings refinement after reason, obtains cement additive；
Preferably, by treated, titanium extraction tailings are refined to specific surface area >=300m2/kg。
6. the preparation method of cement additive according to claim 5, which is characterized in that will treated titanium extraction tailings
It is refined to specific surface area >=400m2/kg；
Preferably, the method for the refinement is grinding.
7. the cement additive being prepared according to the preparation method of cement additive described in claim 5 or 6.
8. including the cement of cement additive as claimed in claim 7.
9. a kind of preparation method of cement described in claim 8, which is characterized in that by clinker, cement additive and
Optional additive mixing, obtains cement；
Preferably, the quality of the cement additive is the 1-20% of the cement clinker quality；
Preferably, the clinker is Portland clinker.
10. a kind of concrete comprising cement described in cement additive described in claim 7 or claim 8.
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| CN111994922A (en) * | 2020-09-09 | 2020-11-27 | 攀钢集团研究院有限公司 | Method for treating titanium extraction tailings washing water |
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| CN114740143A (en) * | 2022-04-12 | 2022-07-12 | 四川大学 | Deep dechlorination method and device based on chloride ion occurrence form in chlorination tailings |
| CN117865518A (en) * | 2024-03-12 | 2024-04-12 | 北京科技大学 | High-doping-amount titanium slag-based cementing material as well as preparation method and application thereof |
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