... in the fields of steel melting, paper making, chemical industry and medical usage. This plant is widely used ... steel-smelting, Nonferrous metal smelting, Fertilizer producing gas, Industry heater combustion-supporting, Casting cupola, Rich oxygen iron- ... ozone generation, naphtha decomposition& carbon block in chemical industry, Ferment industry, superdensity feeding fish, lron-oxygen cement in cement ...