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Novel production technology for producing sodium fluoride and white carbon black in co-production mode by using fluorosilicic acid

A production process, the technology of fluosilicic acid, is applied in the production process field of producing sodium fluoride and co-producing white carbon black with fluosilicic acid, which can solve the problems of high cost of raw materials and high pressure of wastewater treatment, and achieve control of reaction concentration, reduction of Sewage discharge, the effect of reducing the cost of wastewater treatment

Active Publication Date: 2014-09-10
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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  • Novel production technology for producing sodium fluoride and white carbon black in co-production mode by using fluorosilicic acid
  • Novel production technology for producing sodium fluoride and white carbon black in co-production mode by using fluorosilicic acid

Examples

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 add soda ash solution according to the reaction ratio, and heat up to 80°C with steam during the reaction process, and control the pH value 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 after pressure filtration and drying....

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 add soda ash solution according to the reaction ratio, and heat up to 80°C with steam during the reaction process, and control the pH value 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 black after pressure filtration and dryi...

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 heat up to 80°C with steam during the reaction process, and control the pH value 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 black after pressure filtr...

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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 novel production process for producing sodium fluoride and white carbon black by using fluorosilicic 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 r...

Claims

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Application Information

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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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