Method for integrating waste sulfuric acid treatment engineering and gypsum crystal whisker production

A technology for gypsum whiskers and dihydrate gypsum whiskers is applied in the field of integration of waste sulfuric acid treatment engineering and gypsum whisker production, and achieves the effects of being difficult to break, simple in method, and large-scale production.

Inactive Publication Date: 2014-08-06
JIANGSU EFFUL SCIENCE AND TECHNOLOGY CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for the integration of waste sulfuric acid treatment project a

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  • Method for integrating waste sulfuric acid treatment engineering and gypsum crystal whisker production
  • Method for integrating waste sulfuric acid treatment engineering and gypsum crystal whisker production
  • Method for integrating waste sulfuric acid treatment engineering and gypsum crystal whisker production

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[0024] Example

[0025] Combine figure 1 , figure 2 , image 3 , Figure 4 , An integrated method of waste sulfuric acid treatment engineering and gypsum whisker production. The waste sulfuric acid discharged from the factory is collected, then filtered to remove solid impurities, and the filtered waste sulfuric acid is diluted to make a sulfuric acid solution and put into the waste sulfuric acid Reserve in the tank, the preferred waste sulfuric acid is diluted to a sulfuric acid solution with a concentration of 5 to 7%; grind the calcium carbonate and add water to make a calcium carbonate slurry. The first grade Ya'an white calcium carbonate, a specialty of Sichuan, can be used, the grade is 90 to 98 %, the whiteness is 90-95, the fineness is more than 325 mesh, the concentration of the calcium carbonate slurry is 30-50%; the crystal conversion agent is added to the sulfuric acid solution, and the crystal conversion agent is a solution with a concentration of 50% , The solute ...

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Abstract

The invention discloses a method for integrating waste sulfuric acid treatment engineering and gypsum crystal whisker production. According to the method, waste sulfuric acid treatment and gypsum crystal whisker production are combined, the waste sulfuric acid reacts with calcium carbonate, and a crystallizing agent and a stabilizing agent are added in the production process, thereby obtaining various gypsum crystal whisker products. The process is simple, multiple gypsum crystal whisker products can be prepared, the crystal structure of the gypsum crystal whisker is stable and not easy to break, meanwhile the waste sulfuric acid can be effectively utilized, and then environment protection and resource recycling and reuse can be effectively combined.

Description

technical field [0001] The invention relates to a method for producing gypsum whiskers, in particular to a method integrating waste sulfuric acid treatment engineering and gypsum whisker production. Background technique [0002] Sulfuric acid is the first of the three basic acids, with large output and wide application, and has made indelible contributions to human production and life. However, during the application process, sulfuric acid-containing waste (wastewater) is inevitably discharged, which seriously pollutes the environment and is highly harmful to biological growth and human life. Therefore, these wastewaters must be treated up to standard before they can be discharged. In the past, the waste acid treatment at home and abroad was neutralization method, neutralized with limestone or lime, slaked lime, and the wastewater pH value reached about 7 and then discharged. Therefore, various production enterprises need to spend a lot of investment in the construction of...

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Application Information

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IPC IPC(8): C30B29/46C30B29/62C30B7/14C01F11/46
Inventor 唐绍林万建东丁大武孙宝成唐修仁陈宝寿宋晓霞杨丹
Owner JIANGSU EFFUL SCIENCE AND TECHNOLOGY CO LTD
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