CN108102429A - Low alkalinity super-fine active calcium carbide and preparation method - Google Patents
Low alkalinity super-fine active calcium carbide and preparation method Download PDFInfo
- Publication number
- CN108102429A CN108102429A CN201711295510.6A CN201711295510A CN108102429A CN 108102429 A CN108102429 A CN 108102429A CN 201711295510 A CN201711295510 A CN 201711295510A CN 108102429 A CN108102429 A CN 108102429A
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- Prior art keywords
- super
- calcium carbide
- fine active
- active calcium
- low alkalinity
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses low alkalinity super-fine active calcium carbide and preparation methods, are related to calcium carbonate preparing technical field.Low alkalinity super-fine active calcium carbide particle is spherical, and particle size is 20~100nm, and the scope of specific surface area is 25~40m2/ g, pH value are 8.0~8.7；The mass ratio of quick lime and water is 1:6 are mixed；Sieving processing is carried out, then separating treatment is carried out with cyclone hydraulic separators；It obtains milk of lime and is aged；Carbonization treatment is carried out, covering aqueous solution is added in, is sufficiently stirred, carries out cladding activation process；Constant pressure filtration processing is carried out by filter cloth again；Processing is dried in product after filtering, then crushes, grind, obtains super-fine active calcium carbide particle.The present invention carries out activation process by carbonization treatment and covering to the surface of calcium carbonate, solves the problems, such as that product basicity is higher in the prior art.
Description
Technical field
The invention belongs to calcium carbonate preparing technical field, more particularly to low alkalinity super-fine active calcium carbide and preparation side
Method.
Background technology
Calcium carbonate superfine powder is widely used in plastics, rubber, coating, fluid sealant, oil as a kind of new functional filler
The fields such as ink, papermaking.It is imperceptible white powder, and grain size is filled between 20~100nm in rubber, plastics
It can make that product surface light is gorgeous, elongation is big, tension stress is high, anti-tear power is strong, resist bending, cracking are functional.Its application performance
Quality depends primarily upon the parameters such as chemical composition, morphological feature, grain size and its granule size of calcium carbonate.For different applications
System is surface-treated calcium carbonate accordingly, narrow, good with matrix interface compatibility so as to obtain good dispersion, particle diameter distribution
Product be calcium carbonate applications basic demand.In the preparation process of calcium carbonate superfine powder, operating process is complicated and pH value is difficult to
Control, causes the problem of product basicity is higher occur.
The content of the invention
It is an object of the invention to provide low alkalinity super-fine active calcium carbide and preparation methods, pass through carbonization treatment and cladding
Agent carries out activation process to the surface of calcium carbonate, solves the problems, such as that product basicity is higher in the prior art.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention is low alkalinity super-fine active calcium carbide, and particle is spherical, and particle size is 20~100nm, specific surface area
Scope be 25~40m2/ g, pH value are 8.0~8.7；
The preparation method of low alkalinity super-fine active calcium carbide of the present invention, includes the following steps：
Step 1：Choose a certain amount of quick lime, the mass ratio of quick lime and water is 1:6 are mixed, in temperature 60
It is stirred in~80 degrees Celsius；Stop stirring after stirring 30min, stand cooling 60min, be stirred for 15min；
Step 2：Sieving processing is carried out, then separating treatment is carried out with cyclone hydraulic separators；It obtains milk of lime and is aged；
Step 3：By temperature control at 40~45 degrees Celsius, titanium dioxide of the concentration expressed in percentage by volume more than 20% is passed through
Carbon when pH value is 7.0~7.5, completes carbonization treatment, and stopping is passed through carbon dioxide；
Step 4：Covering aqueous solution is added in, is sufficiently stirred, carries out cladding activation process；
Step 5：A certain amount of water is added in, until the mass percentage concentration of calcium carbonate suspension is 5~10%, then is passed through
Filter cloth carries out constant pressure filtration processing；
Step 6：Processing is dried in product after filtering, then crushes, grind, obtains super-fine active calcium carbide
Particle.
Further, the ratio of the covering and water is 1:4, after being dissolved completely under conditions of being sufficiently stirred, add in
Water is diluted to the covering aqueous solution that concentration is 5~20wt%.
The invention has the advantages that：
The present invention carries out the surface of calcium carbonate activation process by carbonization treatment and covering, in processing procedure, passes through
Quantitative time control, solves that product basicity in the prior art is higher and operating process is complicated and what pH value was difficult to control asks
Topic.
Certainly, implement any of the products of the present invention and do not necessarily require achieving all the advantages described above at the same time.
Specific embodiment
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
All other embodiment that member is obtained without creative efforts, belongs to the scope of protection of the invention.
The present invention is low alkalinity super-fine active calcium carbide, and particle is spherical, and particle size is 20~100nm, specific surface area
Scope be 25~40m2/ g, pH value are 8.0~8.7.
The preparation method of low alkalinity super-fine active calcium carbide of the present invention, includes the following steps：
Step 1：Choose a certain amount of quick lime, the mass ratio of quick lime and water is 1:6 are mixed, in temperature 60
It is stirred in~80 degrees Celsius；Stop stirring after stirring 30min, stand cooling 60min, be stirred for 15min；
Step 2：Sieving processing is carried out, then separating treatment is carried out with cyclone hydraulic separators；It obtains milk of lime and is aged；
Step 3：By temperature control at 40~45 degrees Celsius, titanium dioxide of the concentration expressed in percentage by volume more than 20% is passed through
Carbon when pH value is 7.0~7.5, completes carbonization treatment, and stopping is passed through carbon dioxide；
Step 4：Covering aqueous solution is added in, is sufficiently stirred, carries out cladding activation process；
Step 5：A certain amount of water is added in, until the mass percentage concentration of calcium carbonate suspension is 5~10%, then is passed through
Filter cloth carries out constant pressure filtration processing；
Step 6：Processing is dried in product after filtering, then crushes, grind, obtains super-fine active calcium carbide
Particle.
Wherein, the ratio of covering and water is 1:4, after being dissolved completely under conditions of being sufficiently stirred, add in water and be diluted to
Concentration is the covering aqueous solution of 5~20wt%.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation of the present invention is contained in reference to the embodiment or example particular features, structures, materials, or characteristics described
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
It is limited by claims and its four corner and equivalent.
Claims (3)
1. low alkalinity super-fine active calcium carbide, it is characterised in that：Particle is spherical, and particle size is 20~100nm, specific surface area
Scope be 25~40m2/ g, pH value are 8.0~8.7.
2. the preparation method of low alkalinity super-fine active calcium carbide according to claim 1, which is characterized in that including walking as follows
Suddenly：
Step 1：Choose a certain amount of quick lime, the mass ratio of quick lime and water is 1:6 are mixed, in temperature 60~80
It is stirred in degree Celsius；Stop stirring after stirring 30min, stand cooling 60min, be stirred for 15min；
Step 2：Sieving processing is carried out, then separating treatment is carried out with cyclone hydraulic separators；It obtains milk of lime and is aged；
Step 3：By temperature control at 40~45 degrees Celsius, carbon dioxide of the concentration expressed in percentage by volume more than 20% is passed through, when
When pH value is 7.0~7.5, carbonization treatment is completed, stopping is passed through carbon dioxide；
Step 4：Covering aqueous solution is added in, is sufficiently stirred, carries out cladding activation process；
Step 5：A certain amount of water is added in, until the mass percentage concentration of calcium carbonate suspension is 5~10%, then passes through filter cloth
Carry out constant pressure filtration processing；
Step 6：Processing is dried in product after filtering, then crushes, grind, obtains super-fine active calcium carbide particle.
3. the preparation method of low alkalinity super-fine active calcium carbide according to claim 2, which is characterized in that the covering
Ratio with water is 1:4, after being dissolved completely under conditions of being sufficiently stirred, add in water and be diluted to the bag that concentration is 5~20wt%
Cover agent aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295510.6A CN108102429A (en) | 2017-12-08 | 2017-12-08 | Low alkalinity super-fine active calcium carbide and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295510.6A CN108102429A (en) | 2017-12-08 | 2017-12-08 | Low alkalinity super-fine active calcium carbide and preparation method |
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| CN108102429A true CN108102429A (en) | 2018-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558316A (en) * | 2022-08-11 | 2023-01-03 | 秦志强 | Low-alkalinity calcium carbonate and preparation process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659160A (en) * | 2012-05-02 | 2012-09-12 | 浙江省建德市正发碳酸钙有限公司 | Method for preparing low alkalinity calcium carbonate |
| CN102666388A (en) * | 2009-10-02 | 2012-09-12 | 卡西技术合成矿物有限公司 | Production of calcium carbonate |
| CN102876085A (en) * | 2012-08-29 | 2013-01-16 | 池州凯尔特纳米科技有限公司 | Method for preparing high filling capacity functional powder super-fine calcium carbonate for hard polyvinyl chloride (PVC) |
| CN103011224A (en) * | 2012-12-07 | 2013-04-03 | 池州凯尔特纳米科技有限公司 | Preparation method of superfine active calcium carbonate functional filler special for PVC |
| CN103663527A (en) * | 2012-09-25 | 2014-03-26 | 上海华明高技术（集团）有限公司 | Preparation method of cubic ultra-fine calcium carbonate particles |
| CN104203827A (en) * | 2012-03-30 | 2014-12-10 | 欧米亚国际集团 | Dispersed calcium carbonate containing material for improved stability under alkaline conditions |
| CN106186022A (en) * | 2015-05-05 | 2016-12-07 | 上海华明高技术（集团）有限公司 | Low alkalinity super-fine active calcium carbide and preparation method thereof |
-
2017
- 2017-12-08 CN CN201711295510.6A patent/CN108102429A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666388A (en) * | 2009-10-02 | 2012-09-12 | 卡西技术合成矿物有限公司 | Production of calcium carbonate |
| CN104203827A (en) * | 2012-03-30 | 2014-12-10 | 欧米亚国际集团 | Dispersed calcium carbonate containing material for improved stability under alkaline conditions |
| CN102659160A (en) * | 2012-05-02 | 2012-09-12 | 浙江省建德市正发碳酸钙有限公司 | Method for preparing low alkalinity calcium carbonate |
| CN102876085A (en) * | 2012-08-29 | 2013-01-16 | 池州凯尔特纳米科技有限公司 | Method for preparing high filling capacity functional powder super-fine calcium carbonate for hard polyvinyl chloride (PVC) |
| CN103663527A (en) * | 2012-09-25 | 2014-03-26 | 上海华明高技术（集团）有限公司 | Preparation method of cubic ultra-fine calcium carbonate particles |
| CN103011224A (en) * | 2012-12-07 | 2013-04-03 | 池州凯尔特纳米科技有限公司 | Preparation method of superfine active calcium carbonate functional filler special for PVC |
| CN106186022A (en) * | 2015-05-05 | 2016-12-07 | 上海华明高技术（集团）有限公司 | Low alkalinity super-fine active calcium carbide and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558316A (en) * | 2022-08-11 | 2023-01-03 | 秦志强 | Low-alkalinity calcium carbonate and preparation process thereof |
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Application publication date: 20180601 |