Method for preparing aluminum hydroxide sulfate

An aluminum sulfate, basic technology, applied in the direction of aluminum sulfur compounds, etc., can solve the problems of complex production operations, long reaction time, calcium sulfate production, etc., and achieve the effects of easy large-scale production, easy operation, and simple process flow

Inactive Publication Date: 2016-06-29
北京世纪地和控股有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method prepares basic aluminum sulfate solution with more steps, longer reaction ti

Method used

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  • Method for preparing aluminum hydroxide sulfate

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Effect test

Embodiment 1

[0025] Take 100g of aluminum sulfate, add 50g of water and heat to dissolve, make aluminum sulfate solution and put it in the reaction kettle. Then add 2 g of aluminum hydroxide, heat the material to 90° C., keep the reaction temperature at 90° C. under stirring, and react for 60 minutes to obtain basic aluminum sulfate solution. The basic aluminum sulfate chemical formula ([Al 2 (OH) n (SO 4 ) 3-n / 2 ] m ) of n is 0.462. (m indicates that basic aluminum sulfate is a polymer, and m is a positive integer <10)

Embodiment 2

[0027] Take 100g of aluminum sulfate, add 50g of water and heat to dissolve, make aluminum sulfate solution and put it in the reaction kettle. Then add 5 g of aluminum hydroxide, heat the material to 150° C., keep the reaction temperature at 150° C. under stirring, and react for 100 minutes to obtain basic aluminum sulfate solution. The basic aluminum sulfate chemical formula ([Al 2 (OH) n (SO 4 ) 3-n / 2 ] m ) of n is 1.055.

Embodiment 3

[0029] Take 100g of aluminum sulfate, add 50g of water and heat to dissolve, make aluminum sulfate solution and put it in the reaction kettle. Then add 10 g of aluminum hydroxide, heat the material to 250° C., keep the reaction temperature at 250° C. under stirring, and react for 5 minutes to obtain basic aluminum sulfate solution. The basic aluminum sulfate chemical formula ([Al 2 (OH) n (SO 4 ) 3-n / 2 ] m ) of n is 1.795.

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Abstract

The invention relates to a method for preparing aluminum hydroxide sulfate. The method comprises the steps of preparing a sodium aluminate solution, and obtaining aluminum hydroxide through a method of adding seed crystals or introducing carbon dioxide; dissolving aluminum sulfate, so that an aluminum sulfate solution is obtained, adding aluminum hydroxide to the aluminum sulfate solution, placing the mixture into a reaction kettle, heating the mixed materials to 90-250 DEG C under the stirring condition, and conducting a reaction for 5-10 minutes, so that the aluminum hydroxide sulfate is obtained. The technological process of preparing the aluminum hydroxide sulfate is simple, and by changing the amount of added aluminum hydroxide, the aluminum hydroxide sulfate different in basicity can be obtained.

Description

technical field [0001] The invention relates to a method for preparing basic aluminum sulfate, in particular to a method for preparing basic aluminum sulfate with different basicities as required. Background technique [0002] Basic aluminum sulfate is an inorganic high molecular polymer with strong adsorption capacity and better water purification effect than all traditional inorganic water purifiers. After being put into raw water, it has high activity, large flocs formed, fast sedimentation speed, and good filterability. And it has strong adaptability to various raw water. [0003] Basic aluminum sulfate solution can absorb a large amount of sulfur dioxide gas at room temperature, and can quickly release the absorbed sulfur dioxide at high temperature, and can maintain the original characteristics before absorption after release, so basic aluminum sulfate is widely used in industry Applied to control flue gas. [0004] The chemical formula of basic aluminum sulfate is [...

Claims

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Application Information

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IPC IPC(8): C01F7/68
CPCC01F7/68
Inventor 张开元徐美权
Owner 北京世纪地和控股有限公司
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