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日本公布一项从炼钢烟尘中回收锌的专利。提出用盐酸溶液(pH≤0.5)搅拌含锌烟尘,开采用分级法把含锌烟尘分选成富锌部分(100微米以上)和贫锌部分(100微米以下)。把富锌部分加进10—30％的HCl溶液中(固液比=9～19)、在温度40℃条件下浸
Japan announces a patent to recover zinc from steelmaking soot. Proposed with hydrochloric acid solution (pH≤0.5) stirred zinc dust, the mining method used to classify zinc dust into zinc-rich part (100 microns) and zinc-depleted part (100 microns). The zinc-rich part of the 10-30% HCl solution (solid-liquid ratio = 9 to 19), at a temperature of 40 ℃ under the conditions of dip