A kind of production process of using fluosilicic acid to produce sodium fluoride and co-production of white carbon black

A production process, sodium fluoride technology, applied in the direction of alkali metal fluoride, silicon oxide, silicon dioxide, etc., can solve the problems of high cost of raw materials, high pressure of wastewater treatment, etc., to control the reaction concentration, reduce sewage discharge, reduce The effect of treating wastewater costs

Active Publication Date: 2017-01-04
JIANGXI QUCHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional technology, waste water treatment pressure, high cost of raw materials

Method used

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  • A kind of production process of using fluosilicic acid to produce sodium fluoride and co-production of white carbon black
  • A kind of production process of using fluosilicic acid to produce sodium fluoride and co-production of white carbon black

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Dissolve sodium carbonate with water or sodium fluoride mother liquor, content 15-16%.

[0032] 2. Dilute 32-34% water glass to 15-16% water glass content;

[0033] 3. Dilute 40% fluosilicic acid to 15%;

[0034] 4. Put the diluted water glass solution and fluosilicic acid into the reaction kettle at the same time in proportion, and heat up to 80°C with steam during the reaction process, and control the pH value to 4-5;

[0035] 5. After the reaction between water glass and fluosilicic acid is completed, slowly put into the soda ash solution according to the reaction ratio, and the temperature is raised to 80°C through steam during the reaction process, and the pH value is controlled to 9-10;

[0036] 6. After the reaction in the reactor is complete, use the specific gravity difference reaction liquid to carry out solid-solid separation after flotation, and the solid-solid separation is sodium fluoride and silicon dioxide. Silica can be sold as white carbon black a...

Embodiment 2

[0038] 1. Dissolve sodium carbonate with water or sodium fluoride mother liquor, content 20-21%.

[0039] 2. Dilute 32-34% water glass to 20-21% water glass content;

[0040] 3. Dilute 40% fluosilicic acid to 20-21%;

[0041] 4. Put the diluted water glass solution and fluosilicic acid into the reaction kettle at the same time in proportion, and heat up to 80°C with steam during the reaction process, and control the pH value to 4-5;

[0042] 5. After the reaction between water glass and fluosilicic acid is completed, slowly put into the soda ash solution according to the reaction ratio, and the temperature is raised to 80°C through steam during the reaction process, and the pH value is controlled to 9-10;

[0043] 6. After the reaction in the reactor is complete, use the specific gravity difference reaction liquid to carry out solid-solid separation after flotation, and the solid-solid separation is sodium fluoride and silicon dioxide. Silica can be sold as white carbon blac...

Embodiment 3

[0045] 1. Dissolve sodium carbonate with water or sodium fluoride mother liquor, content 15-16%.

[0046] 2. Dilute 32-34% water glass to 15-16% water glass content;

[0047] 3. Dilute 40% fluosilicic acid to 20-21%;

[0048] 4. Put the diluted water glass solution and fluosilicic acid in the ratio of 1:1.05 into the reactor at the same time, heat up to 80°C with steam during the reaction process, and control the pH value to 4-5;

[0049] 5. After the reaction between water glass and fluosilicic acid is completed, slowly put into the soda ash solution according to the reaction ratio of 1.05, and the temperature is raised to 80°C through steam during the reaction process, and the pH value is controlled to 9-10;

[0050] 6. After the reaction in the reactor is complete, use the specific gravity difference reaction liquid to carry out solid-solid separation after flotation, and the solid-solid separation is sodium fluoride and silicon dioxide. Silica can be sold as white carbon...

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Abstract

The invention provides a novel production technology for producing sodium fluoride and white carbon black in a co-production mode by using fluorosilicic acid. The fluorosilicic acid, water glass (sodium silicate) and sodium carbonate are used as main raw materials to produce high-purity silicon dioxide and sodium fluoride in the co-production mode, waste sodium fluoride mother liquor for producing the sodium fluoride is repeatedly used, waste water processing pressure of white carbon black enterprises and sodium fluoride enterprises is greatly relieved, cost of the raw materials of the sodium fluoride and the white carbon black is greatly reduced, and the revenue of the odium fluoride enterprises and the white carbon black enterprises is greatly improved.

Description

technical field [0001] The invention belongs to the field of chemical industry, and specifically relates to a production process for producing sodium fluoride and white carbon black by utilizing fluosilicic acid. Background technique [0002] Sodium fluoride is mainly used as a phosphating accelerator in the coating industry to stabilize the phosphating solution, refine the phosphating, and improve the performance of the phosphating film. In the phosphating of aluminum and its alloys, Al3+, which is very harmful and negatively catalyzed, is sealed to make the phosphating go smoothly. Salt galvanizing additives and enamel, paper industry, etc. [0003] Silica is mainly used in colored rubber products to replace carbon black for reinforcement to meet the needs of white or translucent products. Silica also has super adhesion, tear resistance, heat resistance and aging resistance, so it can also replace part of carbon black in black rubber products to obtain high-quality rubbe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/12C01D3/02
Inventor 张军航陈扬陆豫陈银根
Owner JIANGXI QUCHENG CHEM
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