Ash-and-Slag Wastes of Energy Sector as Raw Material for Production of Rare-Earth Metals and Alumina  

作　　者：Irina Blayda Larisa Slysarenko Tatiana Vasyleva Zinesh Abisheva 

机构地区：[1]Biotechnological Centre, I.L Mechnikov Odessa National University, Odessa 65082, Ukraine [2]Center of Earth Sciences, Metallurgy and Beneficiation, Almaty 050010, Kazakhstan

出　　处：《Journal of Environmental Science and Engineering(A)》2012年第5期704-713,共10页环境科学与工程（A）

摘　　要：The results to develop a complex technology of co-extraction of germanium and gallium from the ash-and-slag wastes of coal combustion in Ukraine were presented. Based on the study of phase changes occurring in initial raw materials as a result of its processing, it was proposed to carry out a preliminary enrichment of the raw materials in order to produce secondary sublimates. Their further processing involves a combination of leaching soluble material with distillation of germanium in the form of tetrachloride. The resulting acidic solutions are trended to the gallium extraction. Optimum conditions of carrying out of processes are recommended.The chemical and phase composition of the resulting dump products and solutions have been defined. On the basis of it ways of their processing for the purpose of reception of alumina and building materials are recommended.

关 键 词：GALLIUM germanium ALUMINA fly ash leaching restorative burning. 

分 类 号：TQ133.1[化学工程—无机化工] O614.33[理学—无机化学]