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To comprehensively reuse the leaching residue obtained from lead-zinc tailings, an active silicon adsorbent (ASA) was prepared from leaching residue and studied as an adsorbent for copper(II), lead(II), zinc(II), and cadmium(II) in this paper. The ASA was prepared by roasting the leaching residue with either a Na2CO3/residue ratio of 0.6:1 at 700 °C for 1 h or a CaCO3/residue ratio of 0.8:1 at 800 °C...
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