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METHOD FOR PURIFYING FUME CONTAMINATED BY HYDROGEN CHLORIDE AND HEAVY METALS, RENDERING INERT SAID HEAVY METALS AND UPGRADING SAID HYDROGEN CHLORIDE
METHOD FOR PURIFYING FUME CONTAMINATED BY HYDROGEN CHLORIDE AND HEAVY METALS, RENDERING INERT SAID HEAVY METALS AND UPGRADING SAID HYDROGEN CHLORIDE
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机译:提纯被氯化氢和重金属污染的烟气,提供惰性的重金属并升级制成的氯化氢的方法
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摘要
The invention concerns a combined method for purifying fume contaminated by hydrogen chloride and heavy metals, rendering inert the heavy metals and upgrading the hydrogen chloride, which consist in: subjecting the fume (6) to a treatment, by dry or semi-humid process, with a basic reagent (8) comprising a soda compound; collecting from said treatment a solid residue (13) containing the heavy metals; dispersing the solid residue and a hydraulic binder (18) in water (20) to form an aqueous broth (21); and extracting from the broth the solid mass (28) which is eliminated, and an aqueous solution (29). 10 claims, 1 figure
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