铝合金铸造生产中,精炼是必不可少的工序,目前国内用于精炼的熔剂有氯气、氯化锌、氯化锰、六氯乙烷等。这些熔剂,在精炼时会产生腐蚀性和刺激性的有害气体。例如,用六氯乙烷作精炼剂时,在炉气中会产生大量氯气、氯化氢(见表1)、四氯乙烯、四氯化碳等有害气体。氯和氯化氢吸入 Aluminum alloy casting production, refining is an essential process, the current domestic solvent used for refining chlorine, zinc chloride, manganese chloride, hexachloroethane and so on. These fluxes, when refined, generate corrosive and irritating noxious gases. For example, when hexachloroethane is used as a refining agent, a large amount of harmful gases such as chlorine gas, hydrogen chloride (see Table 1), tetrachlorethylene, carbon tetrachloride and the like are produced in the furnace gas. Inhalation of chlorine and hydrogen chloride