Mixing process for raw materials of heating part of cubic press

A six-sided top press and heating element technology, applied in the application of ultra-high pressure process, the method of chemically changing substances by atmospheric pressure, chemical instruments and methods, etc., can solve the problem of poor uniformity of raw materials, multi-plate knots, Low production efficiency and other problems, to achieve the effect of satisfying the uniformity of mixing, avoiding lumps and improving production efficiency

Inactive Publication Date: 2020-08-28
河南中南工业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of synthetic diamond synthesis, diamond is produced under certain pressure and temperature conditions. The pressure generates high pressure through the six-sided top extrusion block, and the temperature generates high temperature through the heating element in the synthesis chamber. The raw material of the heating element is generally Liquid sodium silicate is used as a binder to mix dolomite powder and other powders according to a certain proportion of components, but it has the following disadvantages: ①The process of mixing liquid sodium silicate and dolomite powder produces more The plate is knotted, and the uniformity of the mixed raw materials is poor, resulting in a relatively large difference in the resistance of each part of the diamond synthesis; ② After the liquid sodium silicate and dolomite powder are mixed, they need to be heated, stirred and dried, which consumes time and electricity, and the production efficiency is low; ③ Larger environmental pollution; ④The transportation of liquid sodium silicate is more difficult and the transportation cost is high; The liquid sodium silicate also has a certain influence on the quality of the mixed raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] At room temperature, first pour 94% of dolomite powder, 5% of solid sodium silicate and 1% of graphite powder into the mixer in a certain order. After mixing for 5 minutes, the water is sprayed according to the weight ratio of 1.5%. The equipment is sprayed into the mixer and stirred for 10 minutes. A linear sieve is installed under the mixer to pass through a 15-mesh sieve, and a very small amount of lumps are screened out through the linear sieve.

[0015] When solid sodium silicate meets water, it generates heat. During the stirring process, the dry humidity of the material can quickly meet the process requirements, which reduces the stirring and drying time, improves production efficiency, greatly reduces the consumption of electric resources, and reduces environmental pollution.

Embodiment 2

[0017] At room temperature, first pour 93.5% of dolomite powder, 3% of solid sodium silicate and 3.5% of graphite powder into the mixer in a certain order. After 8 minutes of mixing, water is sprayed according to the weight ratio of 3%. The equipment is sprayed into the mixer and stirred for 15 minutes. A linear sieve is installed under the mixer to pass through a 20-mesh sieve, and a very small amount of lumps are screened out through the linear sieve.

Embodiment 3

[0019] At room temperature, first pour 93.8% of dolomite powder, 4% of solid sodium silicate and 2.2% of graphite powder into the mixer according to a certain order. The equipment is sprayed into the mixer and stirred for 20 minutes. A linear sieve is installed under the mixer to pass through a 24-mesh sieve, and a very small amount of lumps are screened out through the linear sieve.

[0020] The present invention improves the uniformity of mixing by using solid sodium silicate mixture, and avoids more hardening lumps. The hardening ratio of using liquid sodium silicate is about 10%, and the hardening ratio of using solid sodium silicate is not more than 10%. 1.5%, reducing the difference in the resistance of each part in diamond synthesis, improving the quality of diamond synthesis, and the solid sodium silicate is convenient to transport, does not need special storage tanks for storage, and is not affected by weather changes. Mixing quality.

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Abstract

The invention provides a mixing process for raw materials of a heating part of a cubic press. The mixing process comprises the following steps: firstly preparing dolomite powder, solid sodium silicateand graphite powder according to a weight ratio of 93.5-94: 2-5: 0.8-4.5 at room temperature, mixing for 5-10 minutes to obtain a mixture, then spraying water into the mixture, and stirring for 10-20minutes to obtain slurry, wherein the spraying amount of the water accounts for 1.5%-3% of the weight of the mixture. The solid sodium silicate is used as a binder so that hardened lumps can be effectively reduced, and the mixing uniformity of the raw materials is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of six-sided top presses, and in particular relates to a mixing process of raw materials for heating parts of six-sided top presses. Background technique [0002] In the process of synthetic diamond synthesis, diamond is produced under certain pressure and temperature conditions. The pressure generates high pressure through the six-sided top extrusion block, and the temperature generates high temperature through the heating element in the synthesis chamber. The raw material of the heating element is generally Liquid sodium silicate is used as a binder to mix dolomite powder and other powders according to a certain proportion of components, but it has the following disadvantages: ①The process of mixing liquid sodium silicate and dolomite powder produces more The plate is knotted, and the uniformity of the mixed raw materials is poor, resulting in a relatively large difference in the resistance of each part of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J3/06
CPCB01J3/062B01J3/065
Inventor 吕秀爱胡汉方韩建新徐铁苗耿龙江张宏伟何文江孙欢
Owner 河南中南工业有限责任公司
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