CN207619038U - The system for handling carbide slag - Google Patents
The system for handling carbide slag Download PDFInfo
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- CN207619038U CN207619038U CN201721442743.XU CN201721442743U CN207619038U CN 207619038 U CN207619038 U CN 207619038U CN 201721442743 U CN201721442743 U CN 201721442743U CN 207619038 U CN207619038 U CN 207619038U
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- carbide slag
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Abstract
The utility model discloses the system of processing carbide slag, system includes：Mixing arrangement has carbide slag entrance, caustic soda entrance and mixed material outlet；There is waterglass synthesizer mixed material entrance, steam inlet and hydrated glass material liquid outlet, mixed material entrance to be connected with mixed material outlet；There is filter device hydrated glass feed liquid port, waterglass outlet and filtered solid outlet, hydrated glass feed liquid port to be connected with hydrated glass material liquid outlet；Breaker is dried, there is filter cake entrance, high-temperature gas entrance and powder outlet, filter cake entrance to be connected with filtered solid outlet；Decomposer, gas vent after having powder entrance, calcium lime powder outlet and decomposing, powder entrance are connected with powder outlet.The system can convert the silica in carbide slag to the waterglass with economic value, while, to realize the recycling of carbide slag, can avoid environmental pollution of the carbide slag to soil, air etc. with the high calcium lime powder of isolated calcium oxide content.
Description
Technical field
The utility model belongs to carbide slag and utilizes field, specifically, the utility model is related to handle the system of carbide slag.
Background technology
The up to ten million ton carbide slags of the annual output in China at present, and the stacking of strong basicity carbide slag does not only take up a large amount of soils,
And because carbide slag is easy to be lost in diffusion, water resource, alkalization soil near pollution stacking place stack be also possible to wind for a long time
Ash has been done, surrounding enviroment are polluted.Containing impurity such as silica, magnesia, aluminium oxide in carbide slag, calcium oxide content is relatively low,
Production calcium carbide can not be back to by directly resulting in carbide slag.
Therefore, the recycling of carbide slag is extremely urgent.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to propose a kind of system of processing carbide slag with a novel purpose.The system can be by the impurity titanium dioxide in carbide slag
Silicon is converted into the waterglass with economic value, while can be with the high calcium lime powder of isolated calcium oxide content, to realize
The recycling of carbide slag avoids environmental pollution of the carbide slag to soil, air etc..
In the one side of the utility model, the utility model discloses a kind of systems of processing carbide slag, according to this reality
With novel embodiment, which includes：
Mixing arrangement, the mixing arrangement have carbide slag entrance, caustic soda entrance and mixed material outlet；
Waterglass synthesizer, the waterglass synthesizer have mixed material entrance, steam inlet and hydrated glass
Material liquid outlet, the mixed material entrance are connected with mixed material outlet；
Filter device, the filter device has hydrated glass feed liquid port, waterglass outlet and filtered solid outlet, described to contain
Waterglass feed liquid port is connected with the hydrated glass material liquid outlet；
Breaker is dried, the drying breaker has filter cake entrance, high-temperature gas entrance and powder outlet, described
Filter cake entrance is connected with the filtered solid outlet；
Decomposer, gas vent after the decomposer has powder entrance, calcium lime powder outlet and decomposes, the powder
Material entrance is connected with the powder outlet.
According to the system of the processing carbide slag of the utility model embodiment, by mixing carbide slag with caustic soda, in steam
Silica under conditions of heating in carbide slag reacted with caustic soda generate waterglass, after filtering separate obtain waterglass and
The high calcium lime powder of calcium oxide content can be obtained after drying is crushed and is decomposed in filter cake, the filter cake.The system can incite somebody to action as a result,
Free silica in carbide slag is converted into the waterglass with economic value, while can be with isolated calcium oxide content height
Calcium lime powder avoid environmental pollution of the carbide slag to soil, air etc. to realize the recycling of carbide slag.
In addition, can also have following additional skill according to the system of the processing carbide slag of the utility model above-described embodiment
Art feature：
Optional, the filter device is filter press.Be conducive to detach waterglass with filter cake as a result,.
It is optional, be disposed with heating component in the decomposer, the heating component be selected from radiant tube, heating rod and
At least one of fuel nozzle.Be conducive to improve the yield and quality of calcium lime powder as a result,.
Optional, the decomposer is vertical heater or rotary kiln.Can further improve as a result, calcium lime powder yield and
Quality.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the system structure diagram according to the processing carbide slag of the utility model one embodiment；
Fig. 2 is the method stream that carbide slag is handled according to the system using processing carbide slag of the utility model one embodiment
Journey schematic diagram.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be
Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the one side of the utility model, the utility model discloses a kind of systems of processing carbide slag, according to this reality
With novel embodiment, with reference to figure 1, which includes：Mixing arrangement 100, waterglass synthesizer 200, filter device 300,
Dry breaker 400 and decomposer 500.
Embodiment according to the present utility model, mixing arrangement 100 have carbide slag entrance 101, caustic soda entrance 102 and mixing
Material outlet 103, and suitable for mixing carbide slag and caustic soda, to obtain mixed material.It should be noted that caustic soda can
Think that naoh concentration is more than the lye of 30wt%.Specifically, the content of silica is 2~5wt% in carbide slag.By
This, carbide slag is mixed with caustic soda, during subsequent, can be converted the free silica in carbide slag to warp
The waterglass for value of helping, to realize the recycling of carbide slag.
One embodiment according to the present utility model, carbide slag water content are not higher than 40wt%.Inventor has found, if calcium carbide
Slag water content is excessively high, then can increase energy consumption needed for follow-up drying break process, increase processing cost.
The mass ratio of further embodiment according to the present utility model, carbide slag butt and caustic soda can be 1000：(25~
100).Inventor has found, if the mass ratio of carbide slag butt and caustic soda is too low, causes caustic soda wastage of material, increases cost；If
The mass ratio of carbide slag butt and caustic soda is excessively high, then the reaction of carbide slag butt is incomplete, cannot achieve the mesh of removing silica
's.
Embodiment according to the present utility model, waterglass synthesizer 200 have mixed material entrance 201, steam inlet
202 and hydrated glass material liquid outlet 203, mixed material entrance 201 is connected with mixed material outlet 103, and is suitable for mixture
Material carries out synthetic reaction under the action of steam, to obtain hydrated glass feed liquid.Specifically, under the heat effect of steam,
Silica in mixed material is reacted with the sodium hydroxide in caustic soda, is generated waterglass, is obtained hydrated glass feed liquid.
The temperature of one embodiment according to the present utility model, synthetic reaction can be 130~180 degrees Celsius, and pressure can
Think that 0.3~1MPa, time can be 2~8h.Inventor has found, if the temperature of synthetic reaction is excessively high, influences reaction and carries out；If
The temperature of synthetic reaction is too low, then synthetic reaction rate is relatively low, influences the removal effect of silica；If the pressure of synthetic reaction
It is excessively high, it influences reaction and carries out, hypotony is then unfavorable for reaction and carries out；If the overlong time of synthetic reaction can influence at system
Reason amount, the time is too short, then synthetic reaction is incomplete, to influence the removal effect of silica.
There is hydrated glass feed liquid port 301, waterglass to export for embodiment according to the present utility model, filter device 300
302 and filtered solid outlet 303, hydrated glass feed liquid port 301 be connected with hydrated glass material liquid outlet 203, and suitable for by aqueous glass
Glass feed liquid is filtered, to obtain waterglass and filter cake.
One embodiment according to the present utility model, filter device can be filter press.Be conducive to water glass solution as a result,
It is separated with filter cake, promotes the quality of waterglass and filter cake.
The moisture content of further embodiment according to the present utility model, filter cake is not more than 40%.Inventor has found, if filter cake
Moisture content it is excessively high, then can increase energy consumption needed for follow-up drying break process, increase processing cost.
Embodiment according to the present utility model, drying breaker 400 have filter cake entrance 401, high-temperature gas entrance 402
With powder outlet 403, filter cake entrance 401 is connected with filtered solid outlet 303, and suitable for carrying out filter cake under the action of high-temperature gas
Drying and break process, to obtain powder.Specifically, the filter cake of inherent filtration in future device is sent into drying breaker, use
High-temperature gas heats filter cake to 100 degrees Celsius or more, and the moisture in filter cake is dried, while broken filter cake obtains powder.It needs
Illustrate, drying breaker can be drying crusher.
One embodiment according to the present utility model, high-temperature gas can be the high temperature cigarette that temperature is not less than 600 degrees Celsius
Gas or inert gas.Inventor has found that if the temperature of high-temperature gas is too low, heat entrained by gas is less, influences filter cake
Drying efficiency.
Embodiment according to the present utility model, decomposer 500 have powder entrance 501, calcium lime powder outlet 502 and divide
Gas vent 503 after solution, powder entrance 501 are connected with powder outlet 403, and suitable for powder is carried out resolution process, so as to
Gas after to calcium lime powder and decomposition.Specifically, powder using high-temperature gas as carrier gas, is sent into decomposer, in decomposer
Under the action of heating component, powder is heated, calcium hydroxide, calcium carbonate in powder or both mixture are decomposed reaction,
Calcium oxide is generated, the water vapour decomposited, carbon dioxide or both mixture are discharged by top gas outlet.Solid powder after decomposition
Material is discharged from decomposer bottom, obtains the calcium lime powder (calcium oxide content >=92wt%) rich in calcium oxide.
One embodiment according to the present utility model, heating component is disposed in decomposer, and heating component can be choosing
From at least one of radiant tube, heating rod and fuel nozzle.Be conducive to flexibly realize the resolution process to powder as a result, together
When do not bring impurity into powder.
Further embodiment according to the present utility model, decomposer can be vertical heater or rotary kiln.Thus, it is possible to aobvious
Write the decomposition efficiency for improving powder.
The temperature of another embodiment according to the present utility model, resolution process can be 600~1100 degrees Celsius.Invention
People has found that, if the temperature of resolution process is too low, calcium hydroxide can not decompose generation calcium oxide in powder；And if resolution process
Temperature is excessively high, then energy consumption increases waste energy, increases processing cost.
According to the system of the processing carbide slag of the utility model embodiment, by mixing carbide slag with caustic soda, in steam
Silica under conditions of heating in carbide slag reacted with caustic soda generate waterglass, after filtering separate obtain waterglass and
The high calcium lime powder of calcium oxide content can be obtained after drying is crushed and is decomposed in filter cake, the filter cake.The system can incite somebody to action as a result,
Free silica in carbide slag is converted into the waterglass with economic value, while can be with isolated calcium oxide content height
Calcium lime powder avoid environmental pollution of the carbide slag to soil, air etc. to realize the recycling of carbide slag.
As described above, the system of above-mentioned processing carbide slag at least has the advantages that one of what follows：
According to the system of the processing carbide slag of the utility model embodiment, carbide slag is turned waste into wealth, the life stone produced
Ashes can do downstream raw material, or be used directly as calcium carbide raw materials for production；
According to the system of the processing carbide slag of the utility model embodiment, the silica in carbide slag is reacted with caustic soda
Generate waterglass, then removed by filter type, the calcium lime powder obtained after decomposition can be used as raw materials for production use, it can be achieved that
Recycling carbide slag, while not outer any pollutant of row；
According to the system of the processing carbide slag of the utility model embodiment, a completely new road is provided for carbide slag
Diameter is protected limestone resource, is avoided because developing limestone resource, it can be achieved that calcium based raw material recycles in calcium carbide production,
Caused by environment and massif destroy, protect natural environment；
According to the system of the processing carbide slag of the utility model embodiment, the environmental protection pressure of enterprise and society is alleviated, is kept away
Environmental pollution of the carbide slag to soil, air etc. is exempted from.
In order to facilitate understanding, the method for handling carbide slag to the system using above-mentioned processing carbide slag below is retouched in detail
It states, embodiment according to the present utility model, with reference to figure 2, this method includes：
S100：Carbide slag and caustic soda are supplied and mixed into mixing arrangement
In the step, carbide slag and caustic soda are supplied and mixed into mixing arrangement, to obtain mixed material.It needs
Illustrate, caustic soda can be the lye that naoh concentration is more than 30wt%.Specifically, in carbide slag silica content
For 2~5wt%.Carbide slag is mixed with caustic soda as a result, it, can be by the impurity titanium dioxide in carbide slag during subsequent
Silicon is converted into the waterglass with economic value, to realize the recycling of carbide slag.
One embodiment according to the present utility model, carbide slag water content are not higher than 40wt%.Inventor has found, if calcium carbide
Slag water content is excessively high, then can increase energy consumption needed for follow-up drying break process, increase processing cost.
The mass ratio of further embodiment according to the present utility model, carbide slag butt and caustic soda can be 1000：(25~
100).Inventor has found, if the mass ratio of carbide slag butt and caustic soda is too low, causes caustic soda wastage of material, increases cost；If
The mass ratio of carbide slag butt and caustic soda is excessively high, then the reaction of carbide slag butt is incomplete, cannot achieve the mesh of removing silica
's.
S200：Mixed material is supplied to waterglass synthesizer, synthetic reaction is carried out under the action of steam
In the step, mixed material is supplied to waterglass synthesizer, synthetic reaction is carried out under the action of steam, with
Just hydrated glass feed liquid is obtained.Specifically, under the heat effect of steam, the hydrogen in silica and caustic soda in mixed material
Sodium oxide molybdena reacts, and generates waterglass, obtains hydrated glass feed liquid.
The temperature of one embodiment according to the present utility model, synthetic reaction can be 130~180 degrees Celsius, and pressure can
Think that 0.3~1MPa, time can be 2~8h.Inventor has found, if the temperature of synthetic reaction is excessively high, influences reaction and carries out；If
The temperature of synthetic reaction is too low, then synthetic reaction rate is relatively low, influences the removal effect of silica；If the pressure of synthetic reaction
It is excessively high, it influences reaction and carries out, hypotony is then unfavorable for reaction and carries out；If the overlong time of synthetic reaction can influence at system
Reason amount, the time is too short, then synthetic reaction is incomplete, to influence the removal effect of silica.
S300：Hydrated glass feed liquid is supplied to filter device and is filtered
In the step, hydrated glass feed liquid is supplied to filter device and is filtered, to obtain waterglass and filter cake.
The moisture content of one embodiment according to the present utility model, filter cake is not more than 40%.Inventor's discovery, if filter cake
Moisture content is excessively high, then can increase energy consumption needed for follow-up drying break process, increase processing cost.
S400：Filter cake is supplied into drying breaker, drying and break process are carried out under the action of high-temperature gas
In the step, filter cake is supplied into drying breaker, is dried and is crushed under the action of high-temperature gas
Processing, to obtain powder.Specifically, the filter cake of inherent filtration in future device is sent into drying breaker, using high-temperature gas plus
Hot filter cake dries the moisture in filter cake to 100 degrees Celsius or more, while broken filter cake obtains powder.It should be noted that drying
Dry breaker can be drying crusher.
One embodiment according to the present utility model, high-temperature gas can be the high temperature cigarette that temperature is not less than 600 degrees Celsius
Gas or inert gas.Inventor has found that if the temperature of high-temperature gas is too low, heat entrained by gas is less, influences filter cake
Drying efficiency.
S500：Powder is supplied into decomposer and carries out resolution process
In the step, powder is supplied into decomposer and carries out resolution process, after obtaining calcium lime powder and decomposing
Gas.Specifically, powder using high-temperature gas as carrier gas, is sent into decomposer, it, will in decomposer under the action of heating component
Powder heats, and calcium hydroxide, calcium carbonate in powder or both mixture are decomposed reaction, and generation calcium oxide decomposites
Water vapour, carbon dioxide or both mixture are discharged by top gas outlet.Solid powder after decomposition is arranged from decomposer bottom
Go out, obtains the calcium lime powder (calcium oxide content >=92wt%) rich in calcium oxide.
The temperature of one embodiment according to the present utility model, resolution process can be 600~1100 degrees Celsius.Inventor
It was found that if the temperature of resolution process is too low, calcium hydroxide can not decompose generation calcium oxide in powder；And if the temperature of resolution process
Height is spent, then energy consumption increases waste energy, increases processing cost.
According to the method that the utility model embodiment handles carbide slag using the system of processing carbide slag, by by calcium carbide
Slag is mixed with caustic soda, and silica under the conditions of steam-heated in carbide slag is reacted with caustic soda generates waterglass, through filtering
It separates afterwards and obtains waterglass and filter cake, which can be obtained the high quick lime of calcium oxide content after drying is crushed and is decomposed
Powder.This method can convert the free silica in carbide slag to the waterglass with economic value as a result, while can be with
The high calcium lime powder of isolated calcium oxide content, to realize the recycling of carbide slag, avoid carbide slag to soil,
The environmental pollution of air etc..
It should be noted that feature and advantage described in the above-mentioned system for processing carbide slag are equally applicable to this and adopt
The method for handling carbide slag with the system of processing carbide slag, details are not described herein again.
Below with reference to specific embodiment, the utility model is described, it should be noted that these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment
Using the carbide slag of Inner Mongol somewhere calcium carbide enterprise, ingredient is as shown in table 1.
Constituent analysis after the roasting of 1 carbide slag of table
Carbide slag is uniformly mixed with liquid caustic soda, wherein carbide slag (butt)：Liquid caustic soda (30wt%)=1000：
70, mixed material is pumped into reaction kettle after mixing, the steam of 0.7~0.8MPa is passed through into reaction kettle, is directly added
Hot mixing material, and be stirred continuously, synthetic reaction is brought it about, waits for that reactor pressure rises to 0.5~0.7MPa, temperature reaches
At 150~160 degrees Celsius, stopping is passed through steam, after keeping pressure and temperature to stablize 4~6h, opens discharge port valve, will be aqueous
Glass frit is sent to the filter press of filter device, is filtered by plate type pressure filter, and filtrate enters filtrate tanks and obtains waterglass
Crude product, filter cake send to drying crusher feed inlet, break up filter cake in drying crusher, and pass through the temperature from hot-blast stove
The high-temperature flue gas or inert gas of about 650 degrees Celsius of degree, powder is dried, and high-temperature flue gas or inert gas carry the powder after drying
Material is sent by powder outlet in thermal decomposition furnace, and thermal decomposition furnace middle and lower part fuel nozzle uses fuel gas combustion heat supplying, will be in stove
Powder be heated to 1000 degrees centigrades, pyrolysis occurs for calcium carbonate and calcium hydroxide in powder, obtains calcium lime powder,
The carbon dioxide generated and vapor are decomposed as tail gas is discharged by top offgas outlet, the calcium lime powder after decomposition is given birth to by bottom
Pulverized limestone outlet discharge, after testing, calcium oxide content is up to 91.77wt% in calcium lime powder.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combines and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (4)
1. a kind of system of processing carbide slag, which is characterized in that including：
Mixing arrangement, the mixing arrangement have carbide slag entrance, caustic soda entrance and mixed material outlet；
Waterglass synthesizer, the waterglass synthesizer have mixed material entrance, steam inlet and hydrated glass feed liquid
Outlet, the mixed material entrance are connected with mixed material outlet；
Filter device, the filter device have hydrated glass feed liquid port, waterglass outlet and filtered solid outlet, the aqueous glass
Glass feed liquid port is connected with the hydrated glass material liquid outlet；
Breaker is dried, the drying breaker has filter cake entrance, high-temperature gas entrance and powder outlet, the filter cake
Entrance is connected with the filtered solid outlet；
Decomposer, gas vent after the decomposer has powder entrance, calcium lime powder outlet and decomposes, the powder enter
Mouth is connected with the powder outlet.
2. system according to claim 1, which is characterized in that the filter device is filter press.
3. system according to claim 1, which is characterized in that heating component is disposed in the decomposer, it is described to add
Hot component is selected from least one of radiant tube, heating rod and fuel nozzle.
4. system according to claim 3, which is characterized in that the decomposer is vertical heater or rotary kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721442743.XU CN207619038U (en) | 2017-11-01 | 2017-11-01 | The system for handling carbide slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721442743.XU CN207619038U (en) | 2017-11-01 | 2017-11-01 | The system for handling carbide slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619038U true CN207619038U (en) | 2018-07-17 |
Family
ID=62827702
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721442743.XU Expired - Fee Related CN207619038U (en) | 2017-11-01 | 2017-11-01 | The system for handling carbide slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207619038U (en) |
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2017
- 2017-11-01 CN CN201721442743.XU patent/CN207619038U/en not_active Expired - Fee Related
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Granted publication date: 20180717 Termination date: 20181101 |