A Novel Green Technique to Recovery Valued Nonferrous-metal Compounds from Molten Slags
Based on several case studies in precipitating behavior of valued nonferrous-metal compounds (VNMC) in molten slags a green technology to recovery VNMC from molten slags was proposed, in which three steps are involved: (1) The selective enriching the dispersed VNMC into the designed mineral phase in molten slag; (2) The selective coarsening the designed mineral phase to critical grain size in molten slag; (3) The selective separating the grown mineral phase in solidified slag from tailing by dressing or hydrometallurgy processes. The features of the technique are clean, low-cost and a great capacity to deal with a large quantity of slags. The utilization of recovered VNMC such as titanium, boron, vanadium compounds was summarized as examples of techniques application. It was confirmed by experiments that the precipitating behavior of the designed mineral phases like perovskite (CaTiO3), suanite (2MgO. B2O3) and sincosite (CaO.V2O5. P2O5) in molten slags is obviously affected by operation factors such as temperature, chemical composition, heat-treatment, additives and so on. The precipitating kinetics and mechanism of VNMC from molten slags during solidification processes were also investigated.
Molten slag selective enriching perovskite suanite sincosite
Nianxin FU Zhitong SUI Taiping LOU Xinghong DU Guanqiang LI Houshong CHEN
School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China Panzhihua Iron & Steel Company, Panzhihua 617000, China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-9
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）