甲基氯硅烷副产浆渣水解提铜工艺优化及废水综合利用技术

Process Optimization of Copper Extraction by Hydrolysis of MethylchlorosilaneBy-product Slurry Residues and Comprehensive Utilization of Wastewater

通过对有机硅甲基单体副产浆渣水解物提铜工艺现状进行分析,制定了水解固渣提铜工艺优化措施及酸水综合利用技术方案。针对固渣提铜工艺,引入水洗和脱水等工序,减少残渣中铜的夹带损失;针对水解酸水提铜,确定了中和法+酸化+还原法组合工艺,酸水中的铜回收率达95%以上;提铜后废水通过二次中和、氧化沉淀,污水中Cu、Fe、Zn等达到三级排放标准。

By analyzing the current situation of copper extraction by hydrolysis of methylchlorosilane by-product slurry residues, the optimization measures for copper extraction with hydrolysate and the technical scheme of comprehensive utilization of acid and water were formulated. For the optimization of copper extraction from solid residues, processes such as water washing and dehydration were introduced to reduce the entrainment loss of copper in the residue. The combined process of neutralization-acidification-reduction was determined by extracting copper from hydrolyzed acid. The recovery of copper in acid water was more than 95%. After the copper extraction, the wastewater is treated by secondary neutralization and oxidation precipitation, and the Cu, Fe and Zn in the waste water reaches the three-grade discharge standard.