Method for treating arsenic sulfide residue
An arsenic sulfide and the obtained technology are applied in the direction of solid waste removal, etc., which can solve the problems of poor working environment, high recovery cost, complicated process, etc., and achieve the effects of reducing landfill cost, reducing leaching toxicity, and reducing capacity increase ratio.
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[0018] Example 1
[0019] Weigh 5 g of polyferric sulfate and 10 g of polyaluminum chloride, add them to 40 g of water and stir. The above-mentioned uniformly stirred mixture was added to 200 g of arsenic sulfide slag and stirred for 0.5 hours. Next, 50 g of iron powder and 20 g of light magnesia mixed powder were added and stirred for 0.5 hour. Finally, add 40g of asbestos wool and stir for 0.5 hour. Put the stirred solid waste into a ziplock bag and place it at room temperature for 3 days. The leaching toxicity test results showed that the leaching toxicity of arsenic was reduced from 800mg / L of the original mud to 1.78mg / L after treatment, which met the requirements for entering the hazardous waste landfill.
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[0020] Example 2
[0021] Weigh 5 g of polyferric sulfate and 10 g of polyaluminum chloride, add them to 40 g of water and stir. The above-mentioned uniformly stirred mixture was added to 200 g of arsenic sulfide slag and stirred for 0.5 hours. Then, 60 g of iron powder was added and stirred for 0.5 hour. Finally, add 30g of asbestos wool and stir for 0.5 hour. Put the stirred solid waste into a ziplock bag and place it at room temperature for 3 days. The leaching toxicity test results showed that the leaching toxicity of arsenic was reduced from 800mg / L of the original mud to 1.26mg / L after treatment, which met the requirements for entering the hazardous waste landfill.
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