Transformation behavior of ferrous sulfate during hematite precipitation for iron removal
赤铁矿法除铁过程中硫酸亚铁的转化行为(英文)作者机构:Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China Yunnan Hualian Zinc and Indium Co.Ltd.Wenshan 663701China Yunnan Yuntong Zinc Co.Ltd.Kunming 650102China
出 版 物:《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报(英文版))
年 卷 期:2020年第30卷第2期
页 面:492-500页
核心收录:
学科分类:080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程]
基 金:Projects(51804146,51964029,51664030,51564030)supported by the National Natural Science Foundation of China Project(2018YFC1900402)supported by the National Key Research and Development Program of China Project supported by the Analysis and Testing Center of Kunming University of Science and Technology,China
主 题:hydrometallurgical zinc crystallization of ferrous sulfate hematite precipitation for iron removal
摘 要:The transformation behavior of ferrous sulfate was examined during hematite precipitation for iron removal in hydrometallurgical ***,the effects of the method used for oxygen supply(pre-crystallization or pre-oxidation of ferrous sulfate)and temperature(170–190℃)on the redissolution and oxidation–hydrolysis of ferrous sulfate were *** precipitation characteristics and phase characterization of the hematite product were *** results showed that the solubility of ferrous sulfate was considerably lower at elevated *** dissolution behavior of ferrous sulfate crystals was influenced by both the concentrations of free acid and zinc sulfate and the oxydrolysis of ferrous *** oxydrolysis of ferrous ions may serve as the dissolution driving *** precipitation proceeded via the following sequential steps:crystallization,redissolution,oxidation,and precipitation of ferrous *** dissolution of ferrous sulfate was slow,which helped to maintain a low supersaturation environment,thereby affording the production of high-grade hematite.