Method for comprehensively utilizing arsenious waste liquor produced in copper-smelting process
A waste liquid and copper smelting technology, which is applied in the field of comprehensive utilization of industrial waste liquid, can solve the problems of a large amount of hazardous waste, occupying land resources, secondary pollution, etc., and achieve the effects of low cost, improving economic benefits, and reducing land occupation
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[0017] Below in conjunction with embodiment the present invention is further described:
[0018] Take 1 m of waste liquid for purification in the first step 3 Copper smelting enterprises use the sulfur dioxide gas produced by pyrometallurgy to produce acid, and the arsenic-containing waste liquid formed is filtered through a filter press to remove solids and injected into the enamel reaction kettle; the acidity of the waste liquid is 12%, and the arsenic-containing The amount is 23000mg / L.
[0019] In the second step, magnesium addition reaction adds 70 kg of 80% magnesium oxide, and stirs for 20 minutes with a stirring paddle, so that the pH value of the liquid is >5.
[0020] The third step is to separate the liquid and filter the liquid with a filter press to obtain 0.9m 3 MgSO4 solution and 130kg filter residue.
[0021] The fourth step is to purify Mg3(AsO4)2. Put the filter residue into the elutriation tank, add 100kg of water for elutriation, and dissolve the residua...
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Abstract
Description
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Application Information
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