Comprehensive treatment method for arsenic-containing smoke dust

• Main Authors: LIU ZHIYONG, YAO WEI, ZHOU YAMING, LI QIHOU, LIU ZHIHONG, LI YUHU, JIANG BO, WANG ZULIN
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS; CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; FIRE-FIGHTING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; LIFE-SAVING; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a comprehensive treatment method for arsenic-containing smoke dust. The comprehensive treatment method comprises the following steps: comprehensively recycling valuable metals such as arsenic, antimony, lead and bismuth from smelting smoke dust containing arsenic, antimony and lead so as to reduce arsenic accumulation in a system and enable the smelting smoke dust to be harmless; and via normal pressure alkaline dipping, removing dissolvable arsenic from the smoke dust, catalytically oxidizing trivalent arsenic in leaching liquor into pentavalent arsenic, then synthesizing stable solid arsenic minerals by combination of one or multiple of a regulation and growth method, a distributed crystallization method, a lime arsenic settling method and a precipitate conversion method, curing the solid arsenic minerals by adopting a stockpiling or cement curing mode, and carrying out procedures of washing, reducing smelting, oxidizing blowing and the like on leaching residues, so as to recycle an