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Method for reducing heavy metals in mineral powder

A technology of mineral powder and heavy metals, applied in non-metallic elements, chemical instruments and methods, silicon compounds, etc., can solve problems such as human harm

Pending Publication Date: 2022-03-04
SHANGHAI KINGLAND FINE CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for reducing the content of heavy metals in mineral powders, which solves the problem that the heavy metals contained in mineral raw materials will cause harm to the human body, thereby expanding the use of ultrafine mineral powders in the fields of food, medicine, cosmetics, etc. Applications

Method used

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  • Method for reducing heavy metals in mineral powder
  • Method for reducing heavy metals in mineral powder

Examples

Experimental program
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Effect test

Embodiment 1

[0037] S1. Add the anthracite block into the crusher for crushing, then crush it through the crusher, sieve it through an 80-mesh sieve, and take the fine powder under the sieve for subsequent use;

[0038] S2, the sericite ore is added in the crusher for crushing, then pulverized by the crusher, sieved through an 80-mesh sieve, and the fine coal powder under the sieve is taken for subsequent use;

[0039] S3, get 70 parts of sericite powder in step S2 and 30 parts of fine coal powder in step S1 and add in pulverizer, mix evenly;

[0040] S4. Put the mixed powder in step S3 into a muffle furnace, calcinate at 600°C for 60 minutes, take it out and cool it to below 50°C;

[0041] S5. Take 1 part of sodium hexametaphosphate and add it to 99 parts of deionized water, stir and dissolve completely to prepare a dispersion;

[0042] S6. Add 30 parts of the calcined mixture in step S3 to 70 parts of the dispersion in step S4, and stir evenly.

[0043] S7. Wet grind the slurry in step...

Embodiment 2

[0047] S1. Add the anthracite block into the crusher for crushing, then crush it through the crusher, sieve it through an 80-mesh sieve, and take the fine coal powder under the sieve for subsequent use;

[0048] S2, adding the talc powder ore to the crusher for crushing, then pulverizing by the crusher, sieving through an 80-mesh sieve, and taking the fine powder under the sieve for subsequent use;

[0049] S3, take 60 parts of talcum powder in step S2 and 40 parts of fine coal powder in step S1 and add them to the pulverizer, and mix evenly;

[0050] S4. Put the mixed powder in step S3 into a muffle furnace, calcinate at 700°C for 70 minutes, take it out and cool it to below 50°C;

[0051] S5. Take 5 parts of sodium polyphosphate and add it to 95 parts of deionized water, stir and dissolve completely to prepare a dispersion;

[0052] S6. Add 30 parts of the calcined mixture in step S3 to 70 parts of the dispersion in step S4, and stir evenly;

[0053] S7, the slurry in step...

Embodiment 3

[0057] S1. Add the anthracite block into the crusher for crushing, then crush it through the crusher, sieve it through an 80-mesh sieve, and take the fine coal powder under the sieve for subsequent use;

[0058] S2, adding the kaolin ore to the crusher for crushing, then pulverizing by the crusher, sieving through an 80-mesh sieve, and taking the fine powder under the sieve for subsequent use;

[0059] S3. Take 60 parts of kaolin in step S2 and 40 parts of fine coal powder in step S1 and add them to the pulverizer, and mix evenly;

[0060] S4. Put the mixed powder in step S3 into a muffle furnace, calcinate at 800°C for 90 minutes, take it out and cool it to below 50°C;

[0061] S5. Take 5 parts of sodium polyphosphate and add it to 95 parts of deionized water, stir and dissolve completely to prepare a dispersion;

[0062] S6. Add 30 parts of the calcined mixture in step S3 to 70 parts of the dispersion in step S4, and stir evenly;

[0063] S7, the slurry in step S5 is wet-g...

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Abstract

The invention discloses a method for reducing heavy metals in mineral powder, which comprises the following steps: uniformly mixing mineral powder and pulverized coal in proportion, calcining at high temperature, adding the calcined mixture into a dispersion liquid, and carrying out wet grinding, centrifugation, drying and crushing to reduce the heavy metals in the mineral powder. The preparation method comprises the following steps: adding pulverized coal into mineral powder, uniformly mixing in proportion, calcining at high temperature, adding the calcined mixture into dispersion liquid, and carrying out wet grinding, centrifuging, drying and crushing; the heavy metal in the mineral powder is removed, so that the problem that the heavy metal contained in the mineral raw materials can harm a human body is solved, and the application of the superfine mineral powder in the fields of food, medicine, cosmetics and the like is expanded.

Description

technical field [0001] The invention relates to the technical field of mineral powder, in particular to a method for reducing heavy metals in mineral powder. Background technique [0002] Ultrafine powder materials are known as one of the four new materials in the 21st century. Ultrafine powder refers to the size between micron particle size and particles between nanometer size (<100nm). Due to its small particle size and large specific surface area, surface energy and surface energy / binding energy, ultrafine powder exhibits unique properties such as surface-interface effect, small size effect and quantum effect. Ultrafine mineral powder is not only a functional material itself, but also shows broad application prospects for the compounding and development of new functional materials, and has a wide range of applications in food, chemical, light industry, medicine, cosmetics and high-tech industries. , plays an extremely important role. However, the heavy metals cont...

Claims

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Application Information

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IPC IPC(8): C01B33/42C01B33/40C01B33/22
CPCC01B33/42C01B33/40C01B33/22C01P2006/80
Inventor 宁海金徐笑马江平廖道发
Owner SHANGHAI KINGLAND FINE CHEM LTD
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