Preparation method of metallic silicon reducing agent

A reducing agent, metal silicon technology, applied in non-metallic elements, chemical instruments and methods, silicon compounds, etc., can solve the problems of high work intensity, large changes, and strong regionality of workers, and achieve physical and chemical activity. Restores effect and strength, improves quality and yield

Inactive Publication Date: 2016-08-31
SHAODONG JIYUAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing metal silicon is reduced from silica by using charcoal, coal or oil coke, but charcoal, coal and tar all have certain defects as reducing agents. Charcoal is made by carbonizing wood, and its production cost is high and its regionality is strong. Serious damage to forests and unsustainable development. At the same time, its material layer accounts for a large proportion, the production environment is poor, and the workers' work intensity is high. During the work, the activity is too high, which is easy to cause carburization of the bottom of the furnace; Stable, and at the same time, there are few coal types that meet the requirements of silicon reduction, and the changes are large, which is easy to cause various losses in industrial production; the oil coke has low activity, which affects the output, and at the same time, there is too much dust, and the invalid burning loss is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of metal silicon reducing agent, it comprises the steps:

[0028] ①. Preparation of ultra-low ash coal: first make the pretreatment tank and coal slurry, then add the coal slurry into the pretreatment tank, and at the same time continuously inject 10% six Sodium metaphosphate solution, then put the obtained coal slurry device in the treatment cylinder, and add the mixed solution of heavy octanol and kerosene with a mass ratio of 1:9 to the water line with a diameter of less than 1mm, and then send the obtained liquid into the flotation machine In the process, the floating material is added to the filter press to obtain ultra-low ash coal after pressure filtration;

[0029] ②, pulping, with the mass fraction being 20 parts of cassava flour, 75 parts of water and 3 parts of NaOH, react in the reactor to prepare slurry, and control the temperature in the reactor to be 60°C;

[0030] ③, mixing materials, mixing biomass materials, sawdust, pig manure ex...

Embodiment 2

[0034] A preparation method of metal silicon reducing agent, it comprises the steps:

[0035] ①. Preparation of ultra-low ash coal: first make the pretreatment tank and coal slurry, then add the coal slurry into the pretreatment tank, and at the same time continuously inject 10% six Sodium metaphosphate solution, then put the obtained coal slurry device in the treatment cylinder, and add the mixed solution of heavy octanol and kerosene with a mass ratio of 1:9 to the water line with a diameter of less than 1mm, and then send the obtained liquid into the flotation machine In the process, the floating material is added to the filter press to obtain ultra-low ash coal after pressure filtration;

[0036] ②, pulping, with the mass fraction being 40 parts of cassava flour, 45 parts of water and 7 parts of NaOH, react in the reactor to prepare slurry, and control the temperature in the reactor to be 80°C;

[0037] ③, mixing materials, mixing biomass materials, sawdust, pig manure ex...

Embodiment 3

[0041] A preparation method of metal silicon reducing agent, it comprises the steps:

[0042] ①. Preparation of ultra-low ash coal: first make the pretreatment tank and coal slurry, then add the coal slurry into the pretreatment tank, and at the same time continuously inject 10% six Sodium metaphosphate solution, then put the obtained coal slurry device in the treatment cylinder, and add the mixed solution of heavy octanol and kerosene with a mass ratio of 1:9 to the water line with a diameter of less than 1mm, and then send the obtained liquid into the flotation machine In the process, the floating material is added to the filter press to obtain ultra-low ash coal after pressure filtration;

[0043] ②, pulping, with the mass fraction being 30 parts of cassava flour, 60 parts of water and 5 parts of NaOH in the reactor to prepare slurry, and controlling the temperature in the reactor to be 70°C;

[0044] ③, mixing materials, mixing biomass materials, sawdust, pig manure extra...

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Abstract

The invention relates to the field of metal silicon production processing, and especially relates to a preparation method of a metallic silicon reducing agent. The method comprises the steps of ultralow ash coal preparation, pulping, batch mixing, carbonization and coke quenching. The purpose of the invention is to provide the preparation method of the metallic silicon reducing agent. The metallic silicon reducing agent prepared through adopting the preparation method has the advantages of low content of impurities, high activity in a high temperature state, high reducing efficiency, good quality and output of silicon produced after reduction, and realization of simple operation and convenient standardized production.

Description

technical field [0001] The invention relates to the field of metal silicon production and processing, in particular to a method for preparing a metal silicon reducing agent. Background technique [0002] Silicon is a good semiconductor material with a wide range of applications. It has a detached position in the fields of solar energy, electronics, information, aerospace, chemical industry, etc. It is the basic material of the information age, and silicon raw materials are generally made from silica (SiO 2 ) restored. [0003] Most of the existing metal silicon is reduced from silica by using charcoal, coal or oil coke, but charcoal, coal and tar all have certain defects as reducing agents. Charcoal is made by carbonizing wood, and its production cost is high and its regionality is strong. Serious damage to forests and unsustainable development. At the same time, its material layer accounts for a large proportion, the production environment is poor, and the workers' work in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/025
CPCC01B33/025
Inventor 刘思羽刘旭东
Owner SHAODONG JIYUAN NEW MATERIAL CO LTD
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