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Method for producing fine precipitated calcium carbonate and white carbon black coproduction sodium chloride and powdered carbon

A light calcium carbonate and white carbon black technology, applied in the direction of calcium carbonate/strontium/barium, alkali metal chloride, silicon oxide, etc., can solve the problem of rising, stimulating the production of white carbon black, and the output cannot meet the market demand, etc. problem, to achieve the effect of simple production process, low production cost and reduced production cost

Inactive Publication Date: 2011-12-07
汪晋强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the rapid development of my country's industrialization process, the demand for white carbon black has been increasing, which has greatly stimulated the production of white carbon black. At present, the price of white carbon black is also rising. However, domestic production cannot Meet the needs of the market

Method used

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  • Method for producing fine precipitated calcium carbonate and white carbon black coproduction sodium chloride and powdered carbon
  • Method for producing fine precipitated calcium carbonate and white carbon black coproduction sodium chloride and powdered carbon

Examples

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Embodiment 1

[0045]A method for producing fine light calcium carbonate and white carbon black to co-produce sodium chloride and carbon powder, first convert the mass content of ammonium chloride in the combined alkali waste liquid and the mass content of calcium hydroxide in the calcium carbide slag; will contain 500kg Carbide slag of calcium hydroxide and combined soda waste liquid ammonium chloride are put into the corrosion-resistant reactor (1) according to the pure substance mass ratio of calcium hydroxide and ammonium chloride of 1: 1.08, stirred evenly, and reacted to obtain chlorine-containing A mixed solution of calcium chloride and ammoniacal liquor; the resulting mixed solution containing calcium chloride and ammoniacal liquor is suction filtered through the first suction filter pump (2), and the first centrifuge (3) is centrifuged to obtain black carbon filter cake and clarified liquid The carbon filter cake of black is used for preparing carbon powder; The liquid of clarificati...

Embodiment 2

[0048] A method for producing fine light calcium carbonate and white carbon black to co-produce sodium chloride and carbon powder, first convert the mass content of ammonium chloride in the combined alkali waste liquid and the mass content of calcium hydroxide in the calcium carbide slag; will contain 500kg Carbide slag of calcium hydroxide and combined soda waste liquid ammonium chloride are put into the corrosion-resistant reactor (1) according to the pure substance mass ratio of calcium hydroxide and ammonium chloride of 1: 1.45, stirred evenly, and reacted to obtain chlorine-containing A mixed solution of calcium chloride and ammoniacal liquor; the resulting mixed solution containing calcium chloride and ammoniacal liquor is suction filtered through the first suction filter pump (2), and the first centrifuge (3) is centrifuged to obtain black carbon filter cake and clarified liquid The carbon filter cake of black is used for preparing carbon powder; The liquid of clarificat...

Embodiment 3

[0051] A method for producing fine light calcium carbonate and white carbon black to co-produce sodium chloride and carbon powder, first convert the mass content of ammonium chloride in the combined alkali waste liquid and the mass content of calcium hydroxide in the calcium carbide slag; will contain 500kg Carbide slag of calcium hydroxide and combined soda waste liquid ammonium chloride are put into the corrosion-resistant reactor (1) according to the pure substance mass ratio of calcium hydroxide and ammonium chloride of 1: 1.32, stirred evenly, and reacted to obtain chlorine-containing A mixed solution of calcium chloride and ammoniacal liquor; the resulting mixed solution containing calcium chloride and ammoniacal liquor is suction filtered through the first suction filter pump (2), and the first centrifuge (3) is centrifuged to obtain black carbon filter cake and clarified liquid The carbon filter cake of black is used for preparing carbon powder; The liquid of clarificat...

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Abstract

The invention discloses a method for producing fine precipitated calcium carbonate and white carbon black coproduction sodium chloride and powdered carbon, which comprises the following steps: using coproduction alkali waste liquid and carbide slag as raw materials; firstly, using ammonium chloride in the coproduction alkali waste liquid to react with calcium hydroxide in the carbide slag to produce carbon filter cake, calcium chloride and ammonium hydroxide; placing the calcium chloride and the ammonium hydroxide into a carbonizing tower, and introducing carbon dioxide gas for carrying out carbonizing reaction; and making the produced calcium carbonate precipitates and the ammonium chloride solution react with water glass to obtain the white carbon black and the sodium chloride. The method uses the industrial waste products of coproduction alkali waste liquid and the carbide slag to produce the calcium carbonate and white carbon black coproduction sodium chloride and powdered carbon,fully utilizes the active ingredients in the industrial waste products, reduces the production cost of industrial products, has simple production process and very low production cost, and belongs to an economic and effective method.

Description

technical field [0001] The invention relates to the field of comprehensive utilization and treatment of industrial wastes, in particular to a method for producing fine light calcium carbonate and white carbon black to co-produce sodium chloride and carbon powder. The raw materials used in the method are combined alkali waste liquid and calcium carbide scum. Background technique [0002] The combined soda ash method (abbreviated as the combined soda ash method) is the main method for producing soda ash. Along with the production of soda ash, a large amount of ammonium chloride waste liquid is also produced. Ammonium chloride waste liquid can be used to produce nitrogen fertilizer after purification. [0003] Calcium carbide slag is the residue produced by the hydrolysis of calcium carbide to produce acetylene. It is an emulsion with a solid content of 8%-10%, also known as calcium carbide mud. Its main chemical composition is calcium hydroxide, and it also contains calcium s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18C01B33/12C01D3/06C01B31/02B09B3/00
Inventor 王嘉兴
Owner 汪晋强