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Purification technology of artificial diamond synthesis material

A synthetic diamond and process technology, which is applied in the field of synthetic diamond synthetic material purification process, can solve the problems of high sewage treatment cost, air pollution, long process, etc., and achieve the effects of reducing sewage treatment cost, good social benefits, and reducing acid content

Active Publication Date: 2007-01-31
ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional artificial diamond purification process, graphite and metal in the concentrate after removing the shaking table need to use a large amount of concentrated and strong acids, such as concentrated sulfuric acid, nitric acid, hydrochloric acid, perchloric acid, etc., the working conditions are harsh, the environment is polluted seriously, and the process is long. The removal of graphite and metal is carried out in two processes; the removal of graphite uses a large amount of concentrated sulfuric acid and concentrated nitric acid, which produces a large amount of toxic gas and thick brown smoke, which seriously pollutes the air and poisons human health; the same is true for the removal of metals. A large amount of toxic gas is produced, and a large amount of acid liquid is discharged at the same time, which seriously pollutes the soil and water quality, and the cost of sewage treatment is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1, take 2 grams of shaker concentrated material + 4 grams of potassium chlorate + 50 mL of pure water + 10 mL of concentrated hydrochloric acid + 0.005 grams of potassium dichromate, mix and heat, the reaction temperature is about 100 ° C, the reaction time is 35 minutes, rinse with pure water Net reaction product, drying, microscopic examination: no impurities were found in the diamond, and the color was bright.

Embodiment 2

[0009] Example 2, take 5 grams of shaker concentrate + 5 grams of potassium chlorate + 80 mL of water + 15 mL of concentrated hydrochloric acid + 0.001 gram of potassium dichromate, mix and heat, the reaction temperature is about 100 ° C, the reaction time is 40 minutes, and the reaction product is rinsed with water , drying, and microscopic examination: there is a small amount of graphite in the diamond, and the color is bright. Treat the treated synthetic material again with the same ratio and the same reaction conditions. Microscopic examination: no impurities are found in the diamond, and the color is bright.

Embodiment 3

[0010] Example 3, take 3 grams of shaker concentrated material + 1 gram of potassium chlorate + 60 mL of water + 10 mL of concentrated hydrochloric acid + 0.002 gram of potassium dichromate, mix and heat, the reaction temperature is about 100 ° C, the reaction time is 40 minutes, and the reaction product is rinsed with water , drying, and microscopic examination: there is a small amount of graphite in the diamond, and the color is bright. The treated synthetic material is treated again in the same proportion and under the same reaction conditions, the reaction product is rinsed with water, dried, and examined under a microscope: no impurities are found in the diamond, and the color is bright.

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PUM

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Abstract

The present invention relates to an artificial diamond synthetic material purification process, belonging to the field of diamond synthesis technology. It is characterized by using potassium chlorate and small quantity of hydrochloric acid to remove graphite and metal from after-refined material of shaker simultaneously.

Description

technical field [0001] The invention belongs to the technical field of diamond synthesis, in particular to a process for purifying synthetic diamond synthetic materials. Background technique [0002] In the traditional artificial diamond purification process, graphite and metal in the concentrate after removing the shaking table need to use a large amount of concentrated and strong acids, such as concentrated sulfuric acid, nitric acid, hydrochloric acid, perchloric acid, etc., the working conditions are harsh, the environment is polluted seriously, and the process is long. The removal of graphite and metal is carried out in two processes; the removal of graphite uses a large amount of concentrated sulfuric acid and concentrated nitric acid, which produces a large amount of toxic gas and thick brown smoke, which seriously pollutes the air and poisons human health; the same is true for the removal of metals. A large amount of toxic gas is produced, and a large amount of acid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/06
Inventor 邵静茹李海霞
Owner ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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