Critical review on secondary zinc resources and their ...
2020-6-17u2002·u2002Zn-smelting slag (contains 44% Zn, 4.8% Cd, 0.74% Cu, 0.38% Co, etc.) belongs to hazardous solid waste (Song et al., 2019). Smelting slag containing a high content of Zn as the secondary resource has to undergo further processing and recycling for the sustainable development of the Zn industry in the future.
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