Design of a Metal Zinc Recovery Project for Iron Alum Slag from an Enterprise in Inner Mongolia
This project is designed to recover zinc metal from iron alum slag by slurry-extraction-washing-back-extraction-degreasing and electro-offwinning process.The 377 t slurry produced daily by the slurry system of this project and the 713 t mineral processing wastewater produced by the high-leaching slag section of the plant are pumped to the extraction workshop to complete the extraction process,and the zinc-rich liquid is sent to the original electrowinning workshop after extraction.Due to the insufficient capacity of the original equipment due to the newly increased amount of solution,the original extraction workshop was expanded,and the size of the electrolytic cell remained unchanged after calculation,and 11 cathodes and 11 anode plates were newly placed in each cell.After the completion of this project,it can process 89 000 t/a of iron alum slag and produce 667 t/a of metal zinc sheet,which solves the problem of iron alum slag storage and valuable elements not recovered in time.
iron alum slagmetal zincslurryextraction electrowinningrecovery
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