Solid wastes such as soot and smelting slag have a serious impact on the environment which are produced during the production of iron and steel and non-ferrous metals.In order to promote the construction and implementation of"Zero-waste City",this paper introduces the implementation of the new technology of resourceful and clean use of iron and steel fume and non-ferrous metal smelting slag based on the process of"fire enrichment-wet decontamination-multi-stage coupling integration".This technology realises the synergistic use of a variety of zinc-containing solid wastes,effectively removes more than 40 kinds of impurities,and efficient step-by-step recovery of zinc,indium,and other metals.It can recovery caesium sulphate and iodine from iron and steel soot through the use of secondary wastewater for the first time internationally.
"Zero-waste City"steel sootnon-ferrous metal smelting slagresource utilization
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