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Method for producing potassium chlorate and co-producing superfine calcium carbonate and ammonium chloride by utilizing carbide slag

A technology of fine calcium carbonate and potassium chlorate, applied in the direction of calcium carbonate/strontium/barium, chloric acid, chlorate, etc., can solve problems such as land erosion, large land, easy leakage and polluted road surface, and achieve simple and easy operation steps , The effect of low equipment investment

Inactive Publication Date: 2011-06-08
汪晋强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbide slag has a moisture content of 40% to 50% and is in the form of paste. It is easy to leak and pollute the road surface during transportation. Long-term accumulation not only occupies a large amount of land, but also has a serious erosion effect on the land.

Method used

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  • Method for producing potassium chlorate and co-producing superfine calcium carbonate and ammonium chloride by utilizing carbide slag
  • Method for producing potassium chlorate and co-producing superfine calcium carbonate and ammonium chloride by utilizing carbide slag

Examples

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Effect test

Embodiment 1

[0029] A method for producing potassium chlorate and co-producing fine calcium carbonate and ammonium chloride with calcium carbide slag, comprising the steps of:

[0030] A: Put the chlor-alkali carbide slag into the ash tank (1), mix it with water to form an emulsion, and make the content of calcium hydroxide reach 120 grams per liter;

[0031] B: Send the calcium carbide slag containing 200kg calcium hydroxide to the chlorination tower (2) with the first pressure pump, and at the same time, input chlorine gas in the chlorination tower (2), so that the mass ratio of calcium hydroxide to chlorine gas is 1 : 0.76 to carry out chlorination reaction, control the chlorination reaction temperature, keep the reaction solution not boiling, display the reaction end point with the chlorination meter (3), when the pointer of the chlorination meter (3) is fixed, it shows that the solution no longer absorbs chlorine , to achieve deep chlorination, that is, chlorination is completed, and ...

Embodiment 2

[0042] A method for producing potassium chlorate and co-producing fine calcium carbonate and ammonium chloride with calcium carbide slag, comprising the steps of:

[0043] A: Put the chlor-alkali carbide slag into the ash tank (1), mix it with water to form an emulsion, and make the content of calcium hydroxide reach 120 grams per liter;

[0044]B: Send the carbide slag containing 300kg calcium hydroxide to the chlorination tower (2) with the first pressure pump, and at the same time, input chlorine gas in the chlorination tower (2), so that the mass ratio of calcium hydroxide to chlorine gas is 1 : 1.00 carry out chlorination reaction, control the chlorination reaction temperature, keep the reaction solution not boiling, display the reaction end point with the chlorination meter (3), when the pointer of the chlorination meter (3) is fixed, it shows that the solution no longer absorbs chlorine , to achieve deep chlorination, that is, chlorination is completed, and a reaction p...

Embodiment 3

[0055] A method for producing potassium chlorate and co-producing fine calcium carbonate and ammonium chloride with calcium carbide slag, comprising the steps of:

[0056] A: Put the chlor-alkali carbide slag into the ash tank (1), mix it with water to form an emulsion, and make the content of calcium hydroxide reach 120 grams per liter;

[0057] B: Send the calcium carbide slag containing 200kg calcium hydroxide to the chlorination tower (2) with the first pressure pump, and at the same time, input chlorine gas in the chlorination tower (2), so that the mass ratio of calcium hydroxide to chlorine gas is 1 : 1.16 carry out chlorination reaction, control chlorination reaction temperature, keep reaction solution not boiling, show reaction terminal point with chlorination meter (3), when the pointer of chlorination meter (3) is fixed, show that solution no longer absorbs chlorine , to achieve deep chlorination, that is, chlorination is completed, and a reaction product containing...

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Abstract

The invention discloses a method for producing potassium chlorate and co-producing superfine calcium carbonate and ammonium chloride by utilizing carbide slag, which comprises the following steps of: reacting calcium hydroxide in chlor-alkali carbide slag with chlorine to generate a reaction product containing calcium chlorate and calcium chloride; filtering the reaction product to remove impurities, cooling and precipitating to separate out solid calcium chlorate, and filtering to obtain the solid calcium chlorate and calcium chloride filtrate; performing a double decomposition reaction of the reaction product containing the calcium chlorate and the calcium chloride and potassium chloride to generate mixed solution of the potassium chlorate and calcium chloride; filtering the mixed solution to remove impurities, distilling under reduced pressure, separating out potassium chlorate crystals, and filtering to obtain the potassium chlorate crystals and solution of calcium chloride; and treating the solution of calcium chloride by using a surfactant, and carburizing carbon dioxide and ammonia water in a carbonizer to obtain lightweight calcium carbonate and ammonium chloride.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of chlor-alkali carbide slag, in particular to a method for producing potassium chlorate and co-producing fine calcium carbonate and ammonium chloride with calcium carbide slag. Background technique [0002] Carbide slag is the waste residue produced when calcium carbide is used to produce acetylene, and its main component is Ca(OH) 2 , also contains a small amount of Fe 2 o 3 , SiO 2 and Al 2 o 3 Other metal oxides, hydroxides and a small amount of organic matter. Carbide slag is an important way to use a large amount of carbide slag as a raw material for cement production. It not only solves the problem of carbide slag discharge polluting the environment, realizes the comprehensive recycling of resources, but also saves limestone resources and reduces carbon dioxide emissions. However, with the development of industrialization in our country, the annual output of carbide slag is in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/14C01F11/18C01C1/16
Inventor 王嘉兴
Owner 汪晋强
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