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.
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 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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