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Method for producing aluminium hydrogen sulfate

A technology of aluminum bisulfate and its production method, which is applied in the direction of aluminum sulfate, aluminum sulfur compounds, etc., can solve the problems of complex control conditions, improper condition control, and difficulty in obtaining products in the synthesis reaction of aluminum bisulfate, so as to meet the needs of the domestic market and reduce the The effect of using cost and production method is simple and feasible

Active Publication Date: 2005-10-26
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aluminum bisulfate has a variety of phases, and the control conditions for the synthesis reaction of aluminum bisulfate are complicated, and it is difficult to obtain the desired product if the conditions are not properly controlled.
At present, the production of aluminum bisulfate is still a blank in China, so for the unit using aluminum bisulfate, its use cost is still quite high

Method used

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  • Method for producing aluminium hydrogen sulfate

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Effect test

Embodiment 1

[0033] The production method of aluminum bisulfate of the present invention, at first calculate the theoretical consumption of required sulfuric acid and aluminum sulfate reactant according to the molecular composition of aluminum bisulfate, carry out synthetic reaction with the excess sulfuric acid and aluminum sulfate that actual consumption is greater than theoretical consumption, will The final reaction solution is successively filtered and washed, cooled to crystallize, crystallized and separated, and dried to obtain aluminum bisulfate products, specifically:

[0034] Aluminum bisulfate is AlH(SO 4 ) 2 ·xH 2 O, the actual amount of sulfuric acid is 3.5 times of the theoretical amount;

[0035] Aluminum bisulfate as Al 2 h 2 (SO 4 ) 4 ·yH 2 O, the actual consumption of sulfuric acid is 3.3 times of the theoretical consumption;

[0036] Aluminum bisulfate as Al 4 h 2 (SO 4 ) 7 ·zH 2 O, the actual amount of sulfuric acid is 3.0 times the theoretical amount.

[...

Embodiment 2

[0040] The production method of aluminum bisulfate of the present invention, at first calculate the theoretical consumption of required sulfuric acid and aluminum sulfate reactant according to the molecular composition of aluminum bisulfate, carry out synthetic reaction with the excess sulfuric acid and aluminum sulfate that actual consumption is greater than theoretical consumption, will The final reaction solution is successively filtered and washed, cooled to crystallize, crystallized and separated, and dried to obtain aluminum bisulfate products, specifically:

[0041] Aluminum bisulfate is AlH(SO 4 ) 2 ·xH 2 O, the actual consumption of sulfuric acid is 3.2 times of the theoretical consumption;

[0042] Aluminum bisulfate as Al 2 h 2 (SO 4 ) 4 ·yH 2 O, the actual amount of sulfuric acid is 2.8 times of the theoretical amount;

[0043] Aluminum bisulfate as Al 4 h 2 (SO 4 ) 7 ·zH 2 O, the actual amount of sulfuric acid is 2.9 times of the theoretical amount. ...

Embodiment 3

[0047]The production method of aluminum bisulfate of the present invention, at first calculate the theoretical consumption of required sulfuric acid and aluminum hydroxide reactant according to the molecular composition of aluminum hydrogen sulfate, carry out synthesis reaction with the excess sulfuric acid and aluminum hydroxide that actual consumption is greater than theoretical consumption , the final reaction solution is sequentially filtered and washed, cooled to crystallize, crystallized and separated, and dried to obtain an aluminum bisulfate product, specifically:

[0048] Aluminum bisulfate is AlH(SO 4 ) 2 ·xH 2 O, the actual consumption of sulfuric acid is 3.6 times of the theoretical consumption;

[0049] Aluminum bisulfate as Al 2 h 2 (SO 4 ) 4 ·yH 2 O, the actual consumption of sulfuric acid is 3.2 times of the theoretical consumption;

[0050] Aluminum bisulfate as Al 4 h 2 (SO 4 ) 7 ·zH 2 O, the actual amount of sulfuric acid is 2.8 times the theore...

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Abstract

The present invention relates to a production method of aluminium hydrogen sulfate. Said method includes the following steps: according to the molecular composition of aluminium hydrogen sulfate calculating theoretical use level of required reactant sulfuric acid and aluminium sulfate or aluminium hydroxide, using excessive sulfuric acid and aluminium sulfate or aluminium hydroxide to make synthesis reaction, then making the final reaction liquor successively undergo the processes of filtering, washing, cooling, crystallization, crystal separation and drying after-treatment so as to obtain the aluminium hydrogen sulfate product.

Description

technical field [0001] The invention relates to a production method of aluminum bisulfate, which belongs to the synthesis method of compounds. Background technique [0002] Aluminum bisulfate is a chemical product with a wide range of uses. It is used as a dyeing aid for acid dyes in the printing and dyeing industry, as a flux for mineral decomposition in the smelting industry, and as a disinfectant and detergent component in the daily chemical industry. , used in the chemical industry as a raw material for the manufacture of sulfate and sodium alum. Aluminum bisulfate has a variety of phases, and the control conditions for the synthesis reaction of aluminum bisulfate are complicated, and it is difficult to obtain the desired product if the conditions are not properly controlled. At present, the production of aluminum bisulfate is still a blank in China, so for the units using aluminum bisulfate, its use cost is still quite high. Contents of the invention [0003] The pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/74
Inventor 杨志华周晓燕胡剑姜梅
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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