During the production process of steel plant, a large amount of valuable zinc-bearing dust and sludge will be produced, including sintering dust, dedusting ash and sludge in blast furnace , electric furnace , converter, and mill scale, etc. For a long time, most of these zinc-bearing dusts have been recycled and directly returned to sintering for utilization. However, with the continuous enrichment of these harmful elements in the production cycle and the increasing proportion of waste galvanized mill scale used in steelmaking, some of them contain The zinc content in zinc dust and sludge materials is also gradually increasing, which affects the life of equipment and thus affects the production process.The main components of these dusts are iron and carbon, but they also contain some harmful elements such as zinc, lead, potassium, and sodium. This part of the dust cannot be completely digested by the current conventional utilization methods, so this part of the dust can only be dispos
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