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    铸造用的中频炉排出的废气含有那些成分？ 中频炉熔炼主要加入废钢、回炉料、很小比例的生铁、硫铁矿等，回炉料是需要经过净化处理的；废钢料比较杂，有油污、铁屑等。排出的废气中含有CO、CO2、O2、N2、NO、NO2、FeO、SO2、H2S及金属粉尘和金属氧化物粉尘 What components (including dust) are contained in the exhaust gas discharged from the induction melting furnace used for casting when the molten iron is melted? Induction melting furnace smelting mainly includes scrap steel, reheating material, a small proportion of pig iron, pyrite, etc. The reheating material needs to be purified; the scrap steel is relatively mixed, with oil stains, iron filings, etc. The exhaust gas contains CO, CO2, O2, N2, NO, NO2, FeO, SO2, H2S, metal dust and metal oxide dust