1results about How to "Achieving selective leaching" patented technology

This invention discloses an ultrasonic-enhanced selective leaching method for the resource utilization of zinc-containing baghouse dust, belonging to the field of metallurgical dust and sludge comprehensive utilization technology. The method involves low-temperature calcination to activate the zinc-iron spinel structure, combined with a weakly acidic leachate for selective leaching of zinc under mild conditions, further enhanced by ultrasonic-enhanced mass transfer, significantly improving the leaching rate and selectivity of zinc. The leachate is purified to obtain nano-zinc oxide, and the leaching residue is co-sintered with high-silicon iron tailings to form glass-ceramic materials. This invention achieves efficient zinc recovery and full-component resource utilization of the residue, avoiding the use of strong acids and the problem of iron co-dissolution. It achieves high-value comprehensive utilization of valuable metals such as zinc and iron in baghouse dust under low-energy consumption and low-pollution conditions.