CN1203124A - Process for preparing superfine talc powder - Google Patents
Process for preparing superfine talc powder Download PDFInfo
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- CN1203124A CN1203124A CN 98110831 CN98110831A CN1203124A CN 1203124 A CN1203124 A CN 1203124A CN 98110831 CN98110831 CN 98110831 CN 98110831 A CN98110831 A CN 98110831A CN 1203124 A CN1203124 A CN 1203124A
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- grinding
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- slurrying
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Abstract
A process for preparing ultrafine talc powder includes such technological steps as crushing talc ore material, pulverizing, pulping, wet ultrafine grinding, strong drying and collecting product, and features low investment, low cost of product and high fineness of talc powder.
Description
The present invention relates to the superfine grinding method of non-metallic minerals, be specifically related to a kind of method that adopts the talcum ore deposit to prepare superfine talcum powder.
Prior art all adopts absolutely dry method ultrafine grinding process with the method that the talcum ore deposit prepares superfine talcum powder, the steps include: (1). raw ore is carried out fragmentation; (2). with the material grinding after the fragmentation; (3). the material behind the grinding is carried out the dry method air flow super and collects goods.In the above-mentioned technical process, the dry method air flow super generally adopts fluidized bed air flow crusher, because this facility investment is big, energy consumption is high, treatment capacity is low and product fineness does not reach the above requirement of-2 μ m90%, therefore production cost is higher on the one hand to cause the talcum powder goods, fineness is not enough on the other hand, broad particle distribution, range of application limited (can not be used for the papermaking level high grade paint).
The purpose of this invention is to provide a kind of less investment, production cost is low and the better talcum powder preparation method of fineness.
For achieving the above object, the technical solution used in the present invention is: a kind of preparation method of superfine talcum powder, and adopting the talcum mineral is raw material, and successively raw material is carried out following processing:
(1). raw material is carried out fragmentation;
(2). the material after the fragmentation is carried out grinding;
(3). with the material slurrying behind the grinding;
(4). the material after the slurrying is carried out the ultra-fine mill stripping of wet type;
(5). the material after the ultra-fine mill stripping is carried out strong drying and collects goods.
In the technique scheme, described material slurrying is with the material Jia Shui behind the grinding, adds the grinding aid medicament and be configured to solid concentration at 20%～80% slurry, and wherein the concentration optimum range is 50%～75% admittedly.The metering of described adding grinding aid medicament is 0.1%～2%.Described grinding aid medicament can be polyacrylic acid or its esters, also can be phosphoric acid salt or its polymer.
The present invention compared with prior art has following advantage:
1. the goods granularity is thinner.In the prior art, adopt the prepared extra fine talc powder fineness of dry method air flow super technology can only reach-2 μ m80%, generally have only-2 μ m50%～70%, and preparation method of the present invention can obtain the superfine talcum powder of-2 μ m90% easily, and narrower particle size distribution.
2. reduced investment.Extra fine talc powder, preparation method thereof of the present invention grinds the equipment stripping and the strong drying technological process from slurrying to wet method super-fine, by 5000 tons of/year scale design, only need 1,100,000 yuan of investments, and the dry method micronizer mill of identical scale need be invested 1,900,000 yuan.This shows the enthusiasm effect that preparation method of the present invention is obtained aspect facility investment.
3. less energy consumption, tooling cost are low.Preparation method of the present invention calculates by above-mentioned scale, total tooling costs such as artificial, water, electricity, coal, medicament, the medium of milling be 250 yuan/ram the loose soil with a stone-roller after sowing, and adopt dry method air flow super method to need 365 yuan/ton.As seen preparation method of the present invention also has clear superiority from the tooling cost angle.
4. end-use is wide.The superfine talcum powder that adopts dry method air flow super method to produce because fineness is not enough, broad particle distribution can not be used for the papermaking level high grade paint, and the product of the method for the invention preparation fully can, therefore product specification is increased.
In sum, the preparation method of superfine talcum powder of the present invention compares with dry method air flow super method, and advantage and enthusiasm are remarkably productive on the one hand; Overcome traditional prejudice (always thinking that dry method air flow super method is simple and reliable, the low and quality height of product cost) of described field those of ordinary skill on the other hand, therefore had significantly and outstanding technical progress and creativeness.
Below in conjunction with embodiment the present invention is further described:
Embodiment: a kind of preparation method of superfine talcum powder, adopting the talcum mineral is raw material, and preparation according to the following steps successively:
The first step: raw material is carried out fragmentation, be about to talcum ore deposit that mining comes out through crusher in crushing.
Second step: with Raymond mill or miscellaneous equipment grinding, make the material fineness reach 325 orders the material after the fragmentation.
The 3rd step: with the material slurrying behind the grinding.Described material slurrying is with the material Jia Shui behind the grinding, adds the grinding aid medicament and be configured to solid concentration at 50%～75% slurry and stir.The metering that wherein adds the grinding aid medicament is 0.1%～2%, and described grinding aid medicament can be polyacrylic acid or its esters, also can be phosphoric acid salt or its polymer.
The 4th step: the material after the slurrying is carried out the ultra-fine mill stripping of wet type.Adopt the ultra-fine disintegrating machine of wet type (or other wet method super-fine mill stripping equipment) to carry out ultra-fine ore grinding.Its principle of work is: ore pulp is sent in the mill stripping tube at the bottom of tube through the fresh feed pump system, be placed with a certain amount of mill stripping medium in the tube, shell device under high speed rotating by the mill that transmission rig drives, brute force by mill stripping dish stirs and dispersion, make and produce between ore pulp and the mill stripping medium that intensive pushes, clashes into, mills, shearing and high pressure, cause the mineral particle in the ore pulp to be delaminated by levigate, the slurries after ultra-fine upwards freely flow out union through screen filtration by discharge port and close.The fineness requirement of the ultra-fine mill stripping of ore pulp (below the median size 0.5 μ m, is being equivalent to more than 20000 orders) more than-2 μ m90%.The use of equipment can be carried out continuous production or single device cyclic production according to 2 to 6 of concrete fineness requirement series connection.
The 5th step: the material after the ultra-fine mill stripping is carried out strong drying and collects goods.Adopt powerful breaking drier, its principle of work is: slurry is sent into the pulverizing that promptly is subjected to the high speed pulverization device in the dryer section by drawing-in device, and the high temperature air that is entered by the shredding unit below carries out drying to material simultaneously.The material particles one side is dry, one side is constantly pulverized, its size constantly reduces, under the hot blast effect, fine powder and small particles material are with sorting equipment place upward, and (rotating speed is adjustable) produces downward pressure and centrifugal force during owing to the sorting equipment rotation, so granule materials is thrown the dryer section inwall, be deposited to the shredding unit place and continue to be pulverized and drying, dried fine powder is collected goods by sorting equipment by fly-ash separator.The drying of powerful breaking drier can effectively obtain moisture content less than 1% product, and its pulverizing is meant broken again the loosing of dried talcum powder particle reached original fineness.This step also can adopt other drying plant to carry out drying, dried material is pulverized with classification obtained same goods then.
Claims (6)
1. the preparation method of a superfine talcum powder is characterized in that: adopting the talcum mineral is raw material, and successively raw material is carried out following processing:
(1). raw material is carried out fragmentation;
(2). the material after the fragmentation is carried out grinding;
(3). with the material slurrying behind the grinding;
(4). the material after the slurrying is carried out the ultra-fine mill stripping of wet type;
(5). the material after the ultra-fine mill stripping is carried out strong drying and collects goods.
2. preparation method according to claim 1 is characterized in that: described material slurrying is with the material Jia Shui behind the grinding, adds the grinding aid medicament and be configured to solid content concentration at 20%～80% slurry.
3. preparation method according to claim 2 is characterized in that: described solid content concentration is 50%～75%.
4. preparation method according to claim 2 is characterized in that: the metering of described adding grinding aid medicament is 0.1%～2%.
5. according to claim 2 or 4 described preparation methods, it is characterized in that: described grinding aid medicament is polyacrylic acid or its esters.
6. according to claim 2 or 4 described preparation methods, it is characterized in that: described grinding aid medicament is phosphoric acid salt or its polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110831 CN1203124A (en) | 1998-05-08 | 1998-05-08 | Process for preparing superfine talc powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110831 CN1203124A (en) | 1998-05-08 | 1998-05-08 | Process for preparing superfine talc powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1203124A true CN1203124A (en) | 1998-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98110831 Pending CN1203124A (en) | 1998-05-08 | 1998-05-08 | Process for preparing superfine talc powder |
Country Status (1)
| Country | Link |
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| CN (1) | CN1203124A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864199A (en) * | 2010-06-11 | 2010-10-20 | 朱自学 | Preparation method of modified composite ultrafine talcum powder |
| CN101870828A (en) * | 2010-05-26 | 2010-10-27 | 上海大学 | Method for producing superfine talcum powder by adopting mixed grinding technology |
| CN105967194A (en) * | 2016-04-20 | 2016-09-28 | 江西联锴新材料有限公司 | Method for preparing high-smoothness-level talcum powder |
| CN113122023A (en) * | 2021-04-20 | 2021-07-16 | 湖南鑫天源新材料有限公司 | Method for preparing pigment and filler for composite material by using black talc |
-
1998
- 1998-05-08 CN CN 98110831 patent/CN1203124A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870828A (en) * | 2010-05-26 | 2010-10-27 | 上海大学 | Method for producing superfine talcum powder by adopting mixed grinding technology |
| CN101864199A (en) * | 2010-06-11 | 2010-10-20 | 朱自学 | Preparation method of modified composite ultrafine talcum powder |
| CN105967194A (en) * | 2016-04-20 | 2016-09-28 | 江西联锴新材料有限公司 | Method for preparing high-smoothness-level talcum powder |
| CN113122023A (en) * | 2021-04-20 | 2021-07-16 | 湖南鑫天源新材料有限公司 | Method for preparing pigment and filler for composite material by using black talc |
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