CN105271277B - A kind of preparation method of loaded calcium hydroxide activity carclazyte - Google Patents
A kind of preparation method of loaded calcium hydroxide activity carclazyte Download PDFInfo
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- CN105271277B CN105271277B CN201510081886.1A CN201510081886A CN105271277B CN 105271277 B CN105271277 B CN 105271277B CN 201510081886 A CN201510081886 A CN 201510081886A CN 105271277 B CN105271277 B CN 105271277B
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Abstract
The invention discloses a kind of preparation methods of loaded calcium hydroxide activity carclazyte, belong to bentonite deep process technology field, the loaded calcium hydroxide activity carclazyte be by dispensing slurrying, acid activation reaction, first time press filtration, washing and second of press filtration, alkalization, third time press filtration, drying, crushing and etc. prepare.Loaded calcium hydroxide activity carclazyte quality prepared by the present invention is high, stable, and preparation process is simple, and the period is short, and safety, production efficiency are high, and production cost, low energy consumption；Gained waste acidity recovery of the invention recycles, and reduces the cost of acid and treated sewage, has achieved the effect that energy-saving and emission-reduction.
Description
【Technical field】
The invention belongs to bentonite deep process technology fields, and in particular to a kind of preparation of loaded calcium hydroxide activity carclazyte
Method.
【Background technology】
Bentonite is known as natural nano-material, general-purpose clay.China's bentonite is best in quality, and ore reserves occupies the second in the world
Position, in addition to a small amount of outlet is as bentonite raw material, remaining is on sale throughout the country all in the form of bentonite in powder and atlapulgite, this
A little product category primary product, the economic benefit is not high, and level of resource utilization is low.In order to obtain the economic benefit of bigger, need to develop
The seriation new product of high-tech content expands new application.
Loaded calcium hydroxide bentonite is to form atlapulgite after acidified, on this basis again using bentonite as raw material
It alkalizes and obtains, it is a kind of lamellar mineral materials, has special anion-exchange capacity.It is used directly for fruit juice, plants
Depickling, decoloration and the drainage of the food liquids such as object oil, the purification of air and water quality, the preparation etc. of catalyst, can also with it is organic
Acid reaction prepares the nano material of NEW TYPE OF COMPOSITE stratiform, for fields such as coating, plastics and novel absorption materials.However it industrializes
The production bentonitic quality of production, the efficiency of existing in the prior art of loaded calcium hydroxide is low and unstable, and the period is long, cost
The problems such as height, the waste water of production does not utilize very well, then improving the loaded calcium hydroxide bentonite quality of production, steady in production
Qualitative, efficiency, reduces cost, and energy-saving and emission-reduction etc. become an important directions of bentonite deep processing research.
【Invention content】
The technical problem to be solved in the present invention is to provide a kind of preparation methods of loaded calcium hydroxide activity carclazyte, to solve
The loaded calcium hydroxide bentonite quality of production, efficiency are low and unstable in the prior art, and the period is long, of high cost, and waste water is without very
The problems such as benefit is managed.Loaded calcium hydroxide activity carclazyte quality prepared by the present invention is high, stable, and preparation process is simple, and the period is short,
Safety, production efficiency are high, and production cost, low energy consumption；Waste acidity recovery obtained by this method recycles, and reduces cost and the processing of acid
The cost of sewage, has achieved the effect that energy-saving and emission-reduction.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of preparation method of loaded calcium hydroxide activity carclazyte, includes the following steps：
S1：Dispensing slurrying：By weight 1:The atlapulgite mother liquor spent acid mixing of 3 bentonites, a concentration of 18%-22%
Uniformly, pasty material is obtained；
S2：Acid activation is reacted：Pasty material obtained by step S1 is carried out acid activation reaction, the slurry object after being reacted
Material；
S3：First time press filtration：Slurry material after step S2 reactions is carried out press filtration, obtains filter cake；
S4：Washing and second of press filtration：Add water agitator treating to the filter cake obtained by step S3, and add flocculant, after sedimentation
Supernatant liquor is extracted out, the remaining slurry material press filtration of extraction clear liquid, obtains filter cake；
S5：Alkalization：Add water to stir filter cake made from step S4 and alkaline solution is added and carry out ion exchange, is loaded
Calcium hydroxide activity carclazyte starches material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material press filtration obtained by step S5 is obtained half-dried negative
Carry calcium hydroxide activity carclazyte；
S7：It is dry：Half-dried loaded calcium hydroxide activity carclazyte obtained by step S6 is dried using hot-air, is obtained dry
Loaded calcium hydroxide activity carclazyte, the hot-air are that flue-gas is obtained with air heat exchange；
S8：It crushes：Packaging is to get to product after loaded calcium hydroxide activity carclazyte that will be dry obtained by step S7 crushes.
Preferably, the reaction of acid activation described in step S2 carries out in heat-resisting acid-resistant reacting kettle, and reaction is using steaming
Vapour is heated to 95-100 DEG C, under low whipping speed 30-40r/min, successive reaction 3.5-4h.
Preferably, 3-6 times that amount of water is filter cake weight obtained by step S3 is washed described in step S4, the flocculant is
Polyacrylamide.
Preferably, the pressure of press filtration described in step S3 and S6 is 0.7-1.0MPa, and it is 45%- that product, which is depressed into moisture content,
50%.
Preferably, a concentration of 0.5%-5% of alkaline solution described in step S5.
Preferably, flue-gas temperature described in step S7 is 850-900 DEG C, and the air themperature is 5-35 DEG C, the heat
Air themperature is 300-450 DEG C.
Preferably, the dry loaded calcium hydroxide activity carclazyte moisture content of gained is 1%-12% in step S7.
Preferably, the dry loaded calcium hydroxide activity carclazyte moisture content is 1%-6%.
Preferably, product cut size described in step S8 is 200-300 mesh.
The invention has the advantages that：
(1) loaded calcium hydroxide activity carclazyte preparation process of the invention is simple, and safe, the period is short, production cost
It is low；
(2) loaded calcium hydroxide activity carclazyte quality produced by the invention is high, stablizes, and production efficiency is high and low energy consumption；
(3) present invention gained waste acidity recovery recycles, and reduces the cost of acid and treated sewage, is conducive to energy-saving and emission-reduction；
(4) loaded calcium hydroxide activity carclazyte activity is more than active carclazyte, uses it for polished fat's deacidifying process
In, depickling can be completed while essential decoloration process process, without increasing manufacturing facilities, while in turn avoid tradition
Alkali refining method and the various rough sledding of the way of distillation generation.
【Description of the drawings】
Fig. 1 is the process flow chart for preparing loaded calcium hydroxide activity carclazyte.
【Specific implementation mode】
Embodiment 1
A kind of preparation method of loaded calcium hydroxide activity carclazyte, includes the following steps：
S1：Dispensing slurrying：By weight 1:3 bentonites, a concentration of 18% atlapulgite mother liquor spent acid be uniformly mixed,
Obtain pasty material；
S2：Acid activation is reacted：It sends the pasty material obtained by step S1 in heat-resisting acid-resistant reacting kettle, then uses steam
Be heated to 95 DEG C, under low whipping speed 30r/min, successive reaction 4h reacted after slurry material；
S3：First time press filtration：The slurry material after step S2 reactions is transported to plate and frame filter press with pump, is in pressure
Press filtration is carried out under 0.7MPa, be depressed into filter cake moisture content be 50% until；
S4：Washing and second of press filtration：3 times of water that filter cake weight obtained by step S3 is added are followed by stirring and washing, and addition polymerization
Supernatant liquor is extracted out after sedimentation and is recycled, and the remaining slurry material of extraction clear liquid is extracted into sheet frame pressure by acrylamide flocculating agent
Filter press filtration, obtains filter cake；
S5：Alkalization：Add water to stir the filter cake obtained by step S4 and the alkaline solution that solution concentration is 0.5% is added and carries out
Ion exchange obtains loaded calcium hydroxide activity carclazyte slurry material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material obtained by step S5 is transported to plate compression
Machine, pressure be 0.7MPa under carry out press filtration, be depressed into filter cake moisture content be 50% until；
S7：It is dry：By moisture content is 50% obtained by step S6 loaded calcium hydroxide activity carclazyte in flash distillation dryer
It is dried using 300 DEG C of hot-airs, obtains the loaded calcium hydroxide activity carclazyte that moisture content is 1%, 300 DEG C of the hot-air is
850 DEG C of flue-gas is obtained with 5 DEG C of air heat exchange；
S8：It crushes：The loaded calcium hydroxide activity carclazyte that moisture content is 1% obtained by step S7 is sent to air separation disintegrator powder
Packaging, obtains the product of 200 mesh after broken.
Embodiment 2
A kind of preparation method of loaded calcium hydroxide activity carclazyte, includes the following steps：
S1：Dispensing slurrying：By weight 1:3 bentonites, a concentration of 22% atlapulgite mother liquor spent acid be uniformly mixed,
Obtain pasty material；
S2：Acid activation is reacted：It sends the pasty material obtained by step S1 in heat-resisting acid-resistant reacting kettle, then uses steam
Be heated to 100 DEG C, under low whipping speed 40r/min, successive reaction 3.5h reacted after slurry material；
S3：First time press filtration：The slurry material after step S2 reactions is transported to plate and frame filter press with pump, is in pressure
Press filtration is carried out under 1.0MPa, be depressed into filter cake moisture content be 45% until；
S4：Washing and second of press filtration：6 times of water that filter cake weight obtained by step S3 is added are followed by stirring and washing, and addition polymerization
Supernatant liquor is extracted out after sedimentation and is recycled, and the remaining slurry material of extraction clear liquid is extracted into sheet frame pressure by acrylamide flocculating agent
Filter press filtration, obtains filter cake；
S5：Alkalization：Add water to stir the filter cake obtained by step S4 and be added solution concentration be 5% alkaline solution carry out from
Son exchanges, and obtains loaded calcium hydroxide activity carclazyte slurry material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material obtained by step S5 is transported to plate compression
Machine, pressure be 1.0MPa under carry out press filtration, be depressed into filter cake moisture content be 45% until；
S7：It is dry：By moisture content is 45% obtained by step S6 loaded calcium hydroxide activity carclazyte in flash distillation dryer
It is dried using 450 DEG C of hot-airs, obtains the loaded calcium hydroxide activity carclazyte that moisture content is 12%, 450 DEG C of the hot-air
It is obtained with 35 DEG C of air heat exchange for 900 DEG C of flue-gas；
S8：It crushes：The loaded calcium hydroxide activity carclazyte that moisture content is 12% obtained by step S7 is sent to air separation disintegrator
It is packed after crushing, obtains the product of 300 mesh.
Embodiment 3
A kind of preparation method of loaded calcium hydroxide activity carclazyte, includes the following steps：
S1：Dispensing slurrying：By weight 1:3 bentonites, a concentration of 20% atlapulgite mother liquor spent acid be uniformly mixed,
Obtain pasty material；
S2：Acid activation is reacted：It sends the pasty material obtained by step S1 in heat-resisting acid-resistant reacting kettle, then uses steam
Be heated to 97 DEG C, under low whipping speed 35r/min, successive reaction 3.7h reacted after slurry material；
S3：First time press filtration：The slurry material after step S2 reactions is transported to plate and frame filter press with pump, is in pressure
Press filtration is carried out under 0.85MPa, be depressed into filter cake moisture content be 47% until；
S4：Washing and second of press filtration：4.5 times of water that filter cake weight obtained by step S3 is added are followed by stirring and washing, and add
Supernatant liquor is extracted out after sedimentation and is recycled, and the remaining slurry material of extraction clear liquid is extracted into sheet frame by polyacrylamide flocculant
Filter press press filtration, obtains filter cake；
S5：Alkalization：Add water to stir the filter cake obtained by step S4 and be added solution concentration be 3% alkaline solution carry out from
Son exchanges, and obtains loaded calcium hydroxide activity carclazyte slurry material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material obtained by step S5 is transported to plate compression
Machine, pressure be 0.85MPa under carry out press filtration, be depressed into filter cake moisture content be 47% until；
S7：It is dry：By moisture content is 47% obtained by step S6 loaded calcium hydroxide activity carclazyte in flash distillation dryer
It is dried using 375 DEG C of hot-airs, obtains the loaded calcium hydroxide activity carclazyte that moisture content is 6%, 375 DEG C of the hot-air is
875 DEG C of flue-gas is obtained with 20 DEG C of air heat exchange；
S8：It crushes：The loaded calcium hydroxide activity carclazyte that moisture content is 6% obtained by step S7 is sent to air separation disintegrator powder
Packaging, obtains the product of 200 mesh after broken.
Embodiment 4
A kind of preparation method of loaded calcium hydroxide activity carclazyte, includes the following steps：
S1：Dispensing slurrying：By weight 1:3 bentonites, a concentration of 19% atlapulgite mother liquor spent acid be uniformly mixed,
Obtain pasty material；
S2：Acid activation is reacted：It sends the pasty material obtained by step S1 in heat-resisting acid-resistant reacting kettle, then uses steam
Be heated to 96 DEG C, under low whipping speed 35r/min, successive reaction 4h reacted after slurry material；
S3：First time press filtration：The slurry material after step S2 reactions is transported to plate and frame filter press with pump, is in pressure
Press filtration is carried out under 0.8MPa, be depressed into filter cake moisture content be 46% until；
S4：Wash second of press filtration：4 times of water that filter cake weight obtained by step S3 is added are followed by stirring and washing, and addition polymerization third
Supernatant liquor is extracted out after sedimentation and is recycled, and the remaining slurry material of extraction clear liquid is extracted into plate compression by acrylamide flocculant
Machine press filtration, obtains filter cake；
S5：Alkalization：Add water to stir the filter cake obtained by step S4 and be added solution concentration be 2% alkaline solution carry out from
Son exchanges, and obtains loaded calcium hydroxide activity carclazyte slurry material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material obtained by step S5 is transported to plate compression
Machine, pressure be 0.8MPa under carry out press filtration, be depressed into filter cake moisture content be 46 until；
S7：It is dry：By moisture content is 46% obtained by step S6 loaded calcium hydroxide activity carclazyte in flash distillation dryer
It is dried using 350 DEG C of hot-airs, obtains the loaded calcium hydroxide activity carclazyte that moisture content is 3%, 350 DEG C of the hot-air is
900 DEG C of flue-gas is obtained with 25 DEG C of air heat exchange；
S8：It crushes：The loaded calcium hydroxide activity carclazyte that moisture content is 3% obtained by step S7 is sent to air separation disintegrator powder
Packaging, obtains the product of 300 mesh after broken.
Embodiment 5
A kind of preparation method of loaded calcium hydroxide activity carclazyte, includes the following steps：
S1：Dispensing slurrying：By weight 1:3 bentonites, a concentration of 20% atlapulgite mother liquor spent acid be uniformly mixed,
Obtain pasty material；
S2：Acid activation is reacted：It sends the pasty material obtained by step S1 in heat-resisting acid-resistant reacting kettle, then uses steam
Be heated to 98 DEG C, under low whipping speed 40r/min, successive reaction 3.5h reacted after slurry material；
S3：First time press filtration：The slurry material after step S2 reactions is transported to plate and frame filter press with pump, is in pressure
Press filtration is carried out under 0.9MPa, be depressed into filter cake moisture content be 48% until；
S4：Washing and second of press filtration：5 times of water that filter cake weight obtained by step S3 is added are followed by stirring and washing, and addition polymerization
Supernatant liquor is extracted out after sedimentation and is recycled, and the remaining slurry material of extraction clear liquid is extracted into sheet frame pressure by acrylamide flocculating agent
Filter press filtration, obtains filter cake；
S5：Alkalization：Add water to stir the filter cake obtained by step S4 and be added solution concentration be 4% alkaline solution carry out from
Son exchanges, and obtains loaded calcium hydroxide activity carclazyte slurry material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material obtained by step S5 is transported to plate compression
Machine, pressure be 0.9MPa under carry out press filtration, be depressed into filter cake moisture content be 48% until；
S7：It is dry：By moisture content is 48% obtained by step S6 loaded calcium hydroxide activity carclazyte in flash distillation dryer
It is dried using 420 DEG C of hot-airs, obtains the loaded calcium hydroxide activity carclazyte that moisture content is 7%, 420 DEG C of the hot-air is
880 DEG C of flue-gas is obtained with 15 DEG C of air heat exchange；
S8：It crushes：The loaded calcium hydroxide activity carclazyte that moisture content is 7% obtained by step S7 is sent to air separation disintegrator powder
Packaging, obtains the product of 200 mesh after broken.
Loaded calcium hydroxide activity carclazyte product moisture content, grain size, alkali solubility, alkali capacity analysis result are shown in embodiment
Following table.
As seen from the above table, the loaded calcium hydroxide activity carclazyte product moisture content that prepared by the present invention is 1%-12%, product
Grain size is 200-300 mesh, and alkali solubility is 0.33-0.35gCa (OH)2/100mlH2O, alkali capacity are 6.6-6.9mmol/g, by
This is as it can be seen that the loaded calcium hydroxide activity carclazyte product quality of present invention process production is high and stable.
Example the above is only the implementation of the present invention is not intended to limit the invention, all in the spirit and principles in the present invention
Within any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of preparation method of loaded calcium hydroxide activity carclazyte, it is characterised in that：Include the following steps：
S1：Dispensing slurrying：By weight 1:3 bentonites, a concentration of 18%-22% atlapulgite mother liquor spent acid be uniformly mixed,
Obtain pasty material；
S2：Acid activation is reacted：Pasty material obtained by step S1 is carried out acid activation reaction, the slurry material after being reacted；
S3：First time press filtration：Slurry material after step S2 reactions is carried out press filtration, obtains filter cake；
S4：Washing and second of press filtration：Add water agitator treating to the filter cake obtained by step S3, and adds flocculant, it will be upper after sedimentation
Layer clear liquid extraction, the remaining slurry material press filtration of extraction clear liquid, obtains filter cake；
S5：Alkalization：Add water to stir filter cake made from step S4 and alkaline solution is added and carry out ion exchange, obtains load hydrogen-oxygen
Change calcium atlapulgite and starches material；
S6：Third time press filtration：Loaded calcium hydroxide activity carclazyte slurry material press filtration obtained by step S5 is obtained into half-dried load hydrogen
Calcium oxide atlapulgite；
S7：It is dry：Half-dried loaded calcium hydroxide activity carclazyte obtained by step S6 is dried using hot-air, obtains dry load
Calcium hydroxide activity carclazyte, the hot-air are that flue-gas is obtained with air heat exchange；
S8：It crushes：Loaded calcium hydroxide activity carclazyte dry obtained by step S7 is crushed to get to product；
The reaction of acid activation described in step S2 carries out in heat-resisting acid-resistant reacting kettle, and reaction is to use to be steam heated to 95-
100 DEG C, under low whipping speed 30-40r/min, successive reaction 3.5-4h；
3-6 times that amount of water is filter cake weight obtained by step S3 is washed described in step S4, the flocculant is polyacrylamide；
The pressure of press filtration described in step S3 and S6 is 0.7-1.0MPa, and it is 45%-50% that product, which is depressed into moisture content,；
A concentration of 0.5%-5% of alkaline solution described in step S5；
Flue-gas temperature described in step S7 is 850-900 DEG C, and the air themperature is 5-35 DEG C, and the hot air temperature is
300-450℃；
The dry loaded calcium hydroxide activity carclazyte moisture content of gained is 1%-12% in step S7；
Product cut size described in step S8 is 200-300 mesh.
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| CN105948068A (en) * | 2016-04-25 | 2016-09-21 | 广西隆安瑞丰工贸有限公司 | Preparation method of alkaline white clay |
| CN105949639A (en) * | 2016-04-25 | 2016-09-21 | 广西隆安瑞丰工贸有限公司 | Preparation method of modified bentonite PVC heat stabilizer |
| CN105820465A (en) * | 2016-04-25 | 2016-08-03 | 广西隆安瑞丰工贸有限公司 | Preparation method of PVC heat stabilizer |
| CN105948069A (en) * | 2016-04-25 | 2016-09-21 | 广西隆安瑞丰工贸有限公司 | Preparation method of activated clay loaded sodium hydroxide |
| CN106046597A (en) * | 2016-06-25 | 2016-10-26 | 张莘蔓 | Environment-friendly modified bentonite PVC heat stabilizer |
| CN105885300A (en) * | 2016-06-25 | 2016-08-24 | 张莘蔓 | Novel environment-friendly PVC (polyvinyl chloride) heat stabilizer |
| CN106009388A (en) * | 2016-06-25 | 2016-10-12 | 张莘蔓 | Environment-friendly PVC (polyvinyl chloride) heat stabilizer |
| CN109954485A (en) * | 2017-12-26 | 2019-07-02 | 金昌红泉膨润土有限责任公司 | A kind of preparation method of atlapulgite |
| CN109954477A (en) * | 2017-12-26 | 2019-07-02 | 金昌红泉膨润土有限责任公司 | A kind of atlapulgite acid lowering agent |
| CN115125062A (en) * | 2022-07-26 | 2022-09-30 | 江南大学 | Soybean oil pretreatment process suitable for physical refining and application |
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| CN101125660A (en) * | 2007-07-17 | 2008-02-20 | 宋世民 | Method for producing active clay by using waste acid |
| CN101519211A (en) * | 2009-04-01 | 2009-09-02 | 广西大学 | Method for producing activated clay by circulating use of waste hydrochloric acid |
| CN101658783A (en) * | 2009-09-15 | 2010-03-03 | 广西大学 | Loaded calcium hydroxide activity carclazyte and preparation method thereof |
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| CN101125660A (en) * | 2007-07-17 | 2008-02-20 | 宋世民 | Method for producing active clay by using waste acid |
| CN101519211A (en) * | 2009-04-01 | 2009-09-02 | 广西大学 | Method for producing activated clay by circulating use of waste hydrochloric acid |
| CN101658783A (en) * | 2009-09-15 | 2010-03-03 | 广西大学 | Loaded calcium hydroxide activity carclazyte and preparation method thereof |
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