Investigations into Recycling Zinc from Used Metal Oxide Varistors via pH Selective Leaching: Characterization, Leaching, and Residue Analysis
XRD spectrum (—) of leaching residue (pH 1, sulfuric acid) compared to XRD spectrum of nonleached starting material (- - -). Chemical compounds are represented as follows: Bi2O3 (◆), Zn2.33Sb0.67O4 (□), and Zn7Sb2O12 (■).
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