CN116478561A - Method for improving whiteness of black talcum powder and product thereof - Google Patents

Method for improving whiteness of black talcum powder and product thereof Download PDF

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Publication number
CN116478561A
CN116478561A CN202310446273.8A CN202310446273A CN116478561A CN 116478561 A CN116478561 A CN 116478561A CN 202310446273 A CN202310446273 A CN 202310446273A CN 116478561 A CN116478561 A CN 116478561A
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black
slurry
talcum powder
whiteness
talc
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杜高翔
刘莉
王先广
周明玉
徐云峰
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Beijing Yixing Technology Co ltd
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Beijing Yixing Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28Compounds of silicon
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/05Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/006Combinations of treatments provided for in groups C09C3/04 - C09C3/12
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C09C3/041Grinding
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT 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
    • C09C3/00Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06Treatment with inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

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  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

The invention provides a method for improving whiteness of black talcum powder and a product thereof, and relates to the technical field of nonmetallic ore processing. The method specifically comprises the following steps: 1) Carrying out wet superfine grinding on the black talcum powder to obtain slurry; 2) Regulating the solid content of the slurry obtained in the step 1), adding a flocculating agent, stirring, and standing for layering; 3) Taking out the upper-layer slurry in the layered slurry in the step 2), adding an oxidant into the upper-layer slurry, and standing; 4) And (3) filtering, washing and drying the talcum powder slurry treated in the step (3) to obtain the whitened black talcum powder. According to the scheme, most of carbon in the black talcum is separated from the talcum by utilizing a superfine grinding method, the flocculating agent is utilized to flocculate carbon particles, unflocted talcum can be suspended at the upper middle part of the slurry, and finally the upper middle part of the slurry is treated by utilizing an oxidant to obtain the high-whiteness talcum. The integral whitening method is simple and efficient, has low energy consumption, is safe and environment-friendly, and is particularly suitable for large-scale industrial production.

Description

Method for improving whiteness of black talcum powder and product thereof
Technical Field
The invention belongs to the technical field of nonmetallic ore processing, and particularly relates to a method for improving whiteness of black talcum powder and a product thereof.
Background
Talc is widely used in the fields of ceramics, chemical industry, metallurgy, paper making, plastics, paint, medicine, cosmetic material, engraving material and the like based on the special physical and chemical properties and the special lamellar structure. The crystal structure of talc allows it to be processed into fine flaky particles, which have a large specific surface area and good dispersibility, and which have non-thermal conductivity and good electrical insulation properties, and talc porcelain made of high-quality talc is a high-grade insulating product. The platy talcum with high aspect ratio has good adsorptivity and covering capability, and is suitable for being used as a raw material of paint by combining with excellent chemical stability of talcum, so that the fire resistance and the weather resistance of the paint are improved.
Whiteness is an important technical index affecting the application field of talcum powder. White talcum powder can be widely used for producing rubber, plastics, paint, putty and other products. Moreover, white talc is necessary if white or colored products are desired.
Black talc is a generic term for black, gray black talc, and carbon inclusion is the main cause of blackening. The main minerals in black talc are talc, as well as some quartz and carbon. The black talc resources in China are quite rich, but the black talc cannot be widely applied due to low whiteness, and can only be applied to ceramics, rubber and other industries. From this, the whiteness problem of the black talc is one of the bottleneck problems restricting the development of the black talc industry.
It is counted that Guangfeng is the "all of black talc" with the largest global reserves and highest grade so far. The content of the Guangfeng black talcum silicon and magnesium can reach about 60 percent and 30 percent respectively, and the Guangfeng black talcum powder is rare high-grade black talcum ore at home and abroad. The whiteness of the Guangfeng black talcum can reach 96.5 percent after reasonable grinding and proper temperature calcination. The calcined enstatite has stable property, provides a road for the application of black talcum, is a superior master batch for manufacturing high-grade daily ceramics, building ceramics, process ceramics and industrial ceramics by replacing kaolin, and has high cost performance for the kaolin. However, the calcining method in the prior art requires higher energy consumption, and talcum is no longer needed after calcining, so that the generated enstatite can only be applied to the ceramic field, and the application field of the black talcum after whitening is limited.
Therefore, the method for whitening the black talcum with low energy consumption, no change of the talcum crystal structure and high whiteness of the product is provided, so that the product can be widely applied to various talcum application fields, and the technical problem to be solved by the person skilled in the art is urgent.
Disclosure of Invention
The invention aims to provide a method for improving whiteness of black talcum powder, which solves the problem of lower whiteness caused by higher carbon content in Jiangxi Guangfeng black talcum in the prior art. According to the scheme, most of carbon particles in the black talcum are peeled off from talcum particles by utilizing a superfine grinding method; then, the flocculant is utilized for selective flocculation treatment, and after the flocculant is added, carbon particles can sink into the bottom of the slurry, unflocculated talcum can suspend in the middle upper part of the slurry, and the carbon content in the middle upper part slurry is lower than 1%; and then the middle and upper sizing agent is treated by using an oxidant to obtain the talcum with high whiteness. The integral whitening method is simple and efficient, has low energy consumption, is safe and environment-friendly, and is particularly suitable for large-scale industrial production.
In order to achieve the above purpose, the present invention provides a method for improving whiteness of black talcum powder, comprising the following steps:
1) Carrying out wet superfine grinding on the black talcum powder to obtain slurry;
2) Regulating the solid content of the slurry obtained in the step 1), adding a flocculating agent, stirring, and standing for layering;
3) Taking out the upper-layer slurry in the layered slurry in the step 2), adding an oxidant into the upper-layer slurry, and standing;
4) And (3) filtering, washing and drying the talcum powder slurry treated in the step (3) to obtain the whitened black talcum powder.
In a preferred embodiment, in step 1), the chemical components and the content of the black talc powder are: talc more than 85%, total content of dolomite and quartz stone less than 10%, and carbon 1-5%.
In a preferred embodiment, in step 1), the wet ultra-fine grinding method is: by black slideStone powder is used as a raw material, ball milling is carried out by adding a proper amount of water into a ball milling medium, the ball milling medium comprises one of zirconia ceramic beads, diamond or alumina ceramic beads, and the size of the ball milling medium is as followsThe filling rate of the grinding medium in the grinding cavity is 65-80%
In a preferred embodiment, in step 1), the wet ultrafine milled slurry has a particle size of: 800-4000 mesh.
In a preferred embodiment, in step 2), the slurry has a solids content of 5 to 30% after conditioning.
In a preferred embodiment, in step 2), the flocculant is one or more of polyaluminum chloride, polyaluminum chloride or polyacrylamide.
In a preferred embodiment, in step 2), the mass ratio of flocculant to black talc is (0.1-1.0): 100.
in a preferred embodiment, in step 3), the oxidizing agent is one or more of sodium hypochlorite, hydrogen peroxide and ozone.
In a preferred embodiment, in step 3), the mass ratio of the oxidizing agent to the black talc is (1-15): 100.
it is a further object of the present invention to provide a white high talc product prepared by any of the above methods.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. in the invention, carbon impurities in the black talc are effectively removed by superfine grinding, flocculation sedimentation and oxidation. The process is energy-saving, environment-friendly, safe and efficient, can continuously produce a large amount of talcum products with high whiteness and low cost without a high-temperature calcination method in the traditional process, and has remarkable progress of cost reduction and synergy.
2. The method does not adopt the traditional calcination process, so that the talcum mineral structure is not changed into enstatite. Therefore, the application field of the black talc whitening product can be effectively expanded, and the black talc whitening product can be widely used for preparing materials such as plastics, rubber, paint and the like.
3. The method can fully utilize the black talc ore produced in Guangfeng area of Shangrou city in Jiangxi province in a recycling way. After one ton of raw black talcum ore is purified and whitened in the scheme of the invention, 700-800 kg of white talcum powder with whiteness of 86% and 200-300 kg of carbon-rich mineral powder can be produced. The carbon-rich mineral powder can be further processed or sold as a byproduct because of the enrichment of carbon elements, so that the resource utilization way of the black talc ore is enlarged, and the economic benefit is improved.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following description will provide further details in connection with specific embodiments, but it should be understood that the scope of the invention is not limited by the specific embodiments.
The embodiment of the invention solves the technical problems of high calcining and whitening energy consumption and high cost of the black talcum in the prior art by providing the method for improving the whiteness of the black talcum powder and the product thereof.
The following describes the technical scheme of the present application in detail through specific embodiments:
the invention provides a method for improving whiteness of black talcum powder, which specifically comprises the following steps:
1) Carrying out wet superfine grinding on the black talcum powder to obtain slurry;
2) Regulating the solid content of the slurry obtained in the step 1), adding a flocculating agent, stirring, and standing for layering;
3) Taking out the upper-layer slurry in the layered slurry in the step 2), adding an oxidant into the upper-layer slurry, and standing;
4) And (3) filtering, washing and drying the talcum powder slurry treated in the step (3) to obtain the whitened black talcum powder.
In a preferred embodiment, in step 1), the chemical components and the content of the black talc powder are: talc more than 85%, total content of dolomite and quartz stone less than 10%, and carbon 1-5%.
In a preferred embodiment, in step 1), the wet superfine grinding method is as follows: using black talcum powder as raw material and ball milling mediumBall milling is carried out by adding a proper amount of water, the ball milling medium comprises one of zirconia ceramic beads, diamond or alumina ceramic beads, and the size of the ball milling medium is thatThe filling rate of the grinding medium in the grinding cavity is 65-80%; more preferably, the grinding medium has a size +.>The filling rate is 70-80%.
In a preferred embodiment, in step 1), the wet ultrafine milled slurry has a particle size of: preferably, the particle size of the wet superfine ground slurry is 800-4000 meshes: 1250-4000 mesh. In the invention, by controlling the parameters of the wet grinding method, slurry with superfine particle size is obtained, so that most of carbon in the black talcum is separated from the talcum and is convenient for subsequent removal.
In a preferred embodiment, in step 2), the solids content of the slurry after adjustment with water is 5-30%, preferably the solids content of the slurry after adjustment is 10-15%.
In a preferred embodiment, in step 2), the flocculant is one or more of polyaluminum chloride, polyaluminum chloride or polyacrylamide.
In a preferred embodiment, in step 2), the mass ratio of flocculant to black talc is (0.1-1.0): 100, preferably, the mass ratio of the flocculant to the black talc is (0.3-0.6): 100.
the flocculant selected by the invention is low in price and easy to purchase, and the effect of flocculating carbon elements can be achieved with less consumption. In terms of the amount of the flocculant, if more than the aforementioned range is used, resource waste is caused, and too much flocculant lowers the yield of the high-whiteness talc.
In a preferred embodiment, in step 2), the stirring conditions are: stirring at 100-2000rpm for 5-40min, preferably 300-1200rpm; the standing time is 10-20min.
In the invention, flocculant is added into the black talcum slurry with superfine particle size, and then the mixture is fully stirred, so that free carbon particles in the black talcum are flocculated, after standing, the carbon particles sink into the bottom of the slurry, and unflocted lighter talcum is suspended in the upper middle part of the slurry, so that the black talcum and the unflocted lighter talcum are primarily separated.
In a preferred embodiment, in step 2), the layered middle-lower layer slurry is collected, filtered, washed and dried to obtain a carbon-rich mineral powder, and the carbon content in the carbon-rich mineral powder is detected to be about 20%, so that the carbon-rich mineral powder can be further processed or sold as a carbon raw material.
In a preferred embodiment, in step 3), the oxidizing agent is one or more of sodium hypochlorite, hydrogen peroxide and ozone, wherein the ozone comprises one of gaseous ozone or liquid ozone.
In a preferred embodiment, in step 3), the mass ratio of the oxidizing agent to the black talc is (1-15): 100.
in the invention, the oxidant is added into the black talcum particles after preliminary separation, so that the carbon content in talcum can be further reduced, and the reaction product generated by the selected oxidant is colorless and has obvious whitening and carbon removing effects. In addition, after flocculation separation treatment, the carbon content in the upper liquid is less than 1%, and carbon element can be oxidized by using a small amount of oxidant, so that the reagent consumption can be saved, and the production cost can be reduced.
In a preferred embodiment, in step 3), the oxidizing agent is liquid ozone water, and the mass ratio of liquid ozone water to black talc is (3-8): 100.
in a preferred embodiment, in step 3), the oxidation reaction time is from 4 to 200 hours.
In a preferred embodiment, in step 4), the filtration, washing and drying may be carried out in a conventional manner known to those skilled in the art, provided that the purpose of the operation is achieved. Preferably, the washing is carried out by adopting deionized water to wash for 2-4 times so as to remove the surface oxidant, and the drying mode is 60-150 ℃, and the drying is carried out for 2-4 hours.
It is a further object of the present invention to provide a white high talc product prepared by any of the above methods.
Unless otherwise indicated, the technical means used in the present invention are conventional means well known to those skilled in the art, and various raw materials, reagents, instruments, equipment, etc. used in the present invention are commercially available or can be prepared by existing methods. The reagents used in the invention are analytically pure unless otherwise specified.
The production area of the black talcum used in the embodiment of the invention is Guangfeng region of Shangrou city of Jiangxi province, wherein the talcum is more than 85%, the total content of dolomite and quartz stone is less than 10%, the carbon is 1-5%, and the whiteness is 6.78%.
The whiteness test method provided by the embodiment of the invention is a whiteness measurement method for building materials and nonmetallic mineral products (GB/T5950-2008).
Example 1
A method of whitening black talc comprising the steps of:
1. carrying out wet superfine grinding on the black talcum powder to 1000 meshes to obtain slurry;
2. regulating the solid content of the slurry in the step 1) to 5%, adding a polyaluminium chloride flocculant accounting for 0.1% of the mass of the black talcum powder, stirring for 10min, standing to flocculate carbon particles in the black talcum powder, and sinking into the bottom of the slurry;
3. taking out the upper layer liquid of the slurry separated from the upper layer and the lower layer in the step 2), and adding sodium hypochlorite oxidant accounting for 3% of the mass of the black talcum powder into the upper layer liquid for oxidization and decarbonization treatment for 24 hours;
4. and (3) taking out the slurry subjected to the oxidation in the step (3), and filtering, washing and drying the slurry to obtain the whitened talcum powder.
The whiteness of the black talc after whitening in this example was tested to be 86%.
Example 2
A method of whitening black talc comprising the steps of:
1. carrying out wet superfine grinding on the black talcum powder to 4000 meshes to obtain slurry;
2. regulating the solid content of the slurry in the step 1) to 30%, adding a polyacrylamide flocculant with the mass of 1.0% of that of the black talcum powder, stirring for 30min, standing to flocculate carbon particles in the black talcum powder, and sinking into the bottom of the slurry;
3. taking out the upper layer liquid of the slurry separated from the upper layer and the lower layer in the step 2), and adding an ozone water oxidant with the mass of 15% of that of the black talcum powder into the upper layer liquid to perform oxidization decarbonization treatment for 150h;
4. and (3) taking out the slurry subjected to the oxidation in the step (3), and filtering, washing and drying the slurry to obtain the whitened talcum powder.
The whiteness of the black talc after whitening in this example was tested to be 91%.
Example 3
A method of whitening black talc comprising the steps of:
1. carrying out wet superfine grinding on the black talcum powder to 2500 meshes to obtain slurry;
2. regulating the solid content of the slurry in the step 1) to 10%, adding a polymeric ferric chloride flocculant accounting for 0.5% of the mass of the black talcum powder, stirring for 20min, standing to flocculate carbon particles in the black talcum powder, and sinking into the bottom of the slurry;
3. taking out the upper layer liquid of the sizing agent which is separated from the upper layer and the lower layer in the step 2), and adding hydrogen peroxide with the mass of 5% of that of the black talcum powder into the upper layer liquid to perform oxidization decarbonization treatment for 130h;
4. and (3) taking out the slurry subjected to the oxidation in the step (3), and filtering, washing and drying the slurry to obtain the whitened talcum powder.
The whiteness of the black talc after whitening in this example was tested to be 89%.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (9)

1. A method for improving whiteness of black talcum powder, which is characterized by comprising the following steps:
1) Carrying out wet superfine grinding on the black talcum powder to obtain slurry;
2) Regulating the solid content of the slurry obtained in the step 1), adding a flocculating agent, stirring, and standing for layering;
3) Taking out the upper-layer slurry in the layered slurry in the step 2), adding an oxidant into the upper-layer slurry, and standing;
4) And (3) filtering, washing and drying the talcum powder slurry treated in the step (3) to obtain the whitened black talcum powder.
2. The method for improving whiteness of black talc according to claim 1, wherein in step 1), said wet ultra-fine grinding method is: using black talcum powder as raw material, ball-milling with ball-milling medium containing one of zirconia ceramic beads, diamond or alumina ceramic beads and proper amount of water, wherein the size of the ball-milling medium isThe filling rate of the grinding medium in the grinding cavity is 65-80%.
3. The method for improving whiteness of black talc according to claim 1, wherein in step 1), the wet superfine grinding slurry has a particle size of: 800-4000 mesh.
4. A method for improving the whiteness of talc according to claim 1, wherein in step 2), the solid content of said slurry after adjustment is 5 to 30%.
5. A method of increasing the whiteness of talc according to claim 1, wherein in step 2), said flocculant is one or more of polyaluminum chloride, polyaluminum chloride or polyacrylamide.
6. A method for improving the whiteness of black talc according to claim 1, wherein in step 2), the mass ratio of said flocculant to black talc is (0.1 to 1.0): 100.
7. the method for improving whiteness of black talc according to claim 1, wherein in step 3), said oxidizing agent is one or more of sodium hypochlorite, hydrogen peroxide and ozone.
8. A method for improving whiteness of black talc according to claim 1, wherein in step 3), the mass ratio of said oxidizing agent to black talc is (1 to 15): 100.
9. a white high talc product prepared as defined in any one of claims 1 to 8 as black talc.
CN202310446273.8A 2023-04-24 2023-04-24 Method for improving whiteness of black talcum powder and product thereof Pending CN116478561A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117566748A (en) * 2023-10-09 2024-02-20 中南大学 Method for preparing quartz sand by using black talcum and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117566748A (en) * 2023-10-09 2024-02-20 中南大学 Method for preparing quartz sand by using black talcum and application thereof

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