An efficient and environmentally friendly route for PbS crystal recovery from lead ash generated in tin removal section (LATR) via high-speed leaching and recrystallization method

This paper mainly investigated the synthesis of a high purity PbS crystal directly from lead ash which was collected Tin removal process (LATR). The LATR firstly disposed by nitric acid leaching system to generate nitrate solution. prepared mixing solution with sodium sulfide at room temperature (25?C). effects molar ratio HNO3 Pbin on Pb efficiency investigated, demonstrating that could attain 82.9 % 3. As, Cu, Fe, and Al generally increased increasing LATR, while 99.99 wt% Sn still left in residue. In generating solution, yield Na2S filtrate. up 93.1% 1.5. Overall, this method proved be an efficient environmental friendly route for quality common containing waste ore or secondary smelting factory.