纯化—反应—浓缩—结晶—分级五合一的液膜工艺(Ⅱ)  

LIQUID MEMBRANE TECHNIQUE OF COMBINATING OF FIVE STAGES (PURIFICATION-REACTION-CONCENTRATION-CRYSTALLIZATION -CLASSIFICATION) INTO ONE STAGE (REACTION)

作　　者：王向德[1] 朱斌[1] 万印华[1] 赵晓明[1] 李晓东 莫启武[1] 汤兵[1] 

机构地区：[1]华南理工大学环境科学研究所

出　　处：《水处理技术》1998年第4期205-209,共5页Technology of Water Treatment

摘　　要：本文继本题之（Ⅰ），报导了五工序合一液膜工艺的八个实例。它们是直接在内水相结晶（沉淀）：（１）生产仲钨酸铵（继本题之Ⅰ）；（２）生产草酸混合稀土；（３）制备碳酸钇；（４）自ＨＡｕＣｌ４体系提取单质金；（５）自退镀废水回收单质金；（６）和（７）自湿法冶锌系统分别回收硫化镉和回收金属铟；（８）制备偏钛酸钡的中间体，钛钡比为１的草酸氧钛钡和偏钛酸钡。最后得出的结论是五工序合一液膜工艺具有普遍意义，可以发展成为一种制备高纯，均匀细粉的新方法。此外，并列举了此方法的优点。Eight practical examples of emulsion liquid membrane process with characteristics of combinating five stages (purificatcon-reaction-concentration-crystallization precipitation-classification) into one stage are reported in this paper. These examples are:(1)producing ammonium paratungestate; (2)producing mixed rare earth oxalate; (3)preparing yttrium carbonate; (4)extracting element gold from HAuCl 4 system; (5)recovering gold powder from electroplating waste water; (6)and (7)recovering CdS and metalic indium separately from acidic leaching solution of zinc hydrometallurgy; (8)preparing the intermediate BaTiO(C 2O 4) 2 of BaTiO 3.

关 键 词：液膜 结晶 沉淀 浓缩 分级 提纯 废水处理 

分 类 号：X703[环境科学与工程—环境工程] TQ028.8[化学工程]