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J. Cent. South Univ. (2017) 24: 1720-1726 DOI: https://doi.org/10.1007/s11771-017-3579-5 Preparation of microsized hematite powder from ferrous sulfate via microwave calcination LIU Bing-guo(刘秉国)1... University Press and Springer-Verlag GmbH Germany 2017 Abstract: The preparation of microsized hematite powder from ferrous sulfate using microwave calcination was investigated based on the TG/DTG......
; ferrous sulfate 1 Introduction As a consequence of the lanthanide contraction, Mo and W have almost identical atomic radii and analogous electronic structures, and hence exhibit extremely similar... Separation of macro amounts of tungsten and molybdenum by precipitation with ferrous salt ZHAO Zhong-wei1, 2, CAO Cai-fang1, CHEN Xing-yu2 1. School of Metallurgical Science and Engineering, Central......
Intensified bioleaching of low-grade molybdenite concentrate by ferrous sulfate and pyriteJuan Yu1,Hong-Ying Yang2,Lin-Lin Tong2,Jun Zhu11. School of Metallurgy Engineering,Xi’an University of Architecture and Technology2. School of Materials & Metallurgy,Northeastern University摘 要:Intensifying effects of ferrous sulfate and pyrite on bioleaching of low......
Reduction leaching of rare earth from ion-adsorption type rare earths ore with ferrous sulfate肖燕飞1,2,3,冯宗玉1,2,黄莉1,2,3,黄小卫1,2,陈迎迎5,龙志奇1,21. National Engineering Research Center for Rare Earth... and the bigger cerium partition in the leaching liquor.In the ferrous sulfate column leaching process,the rare earth leaching rate and the rare earth efficiency were a little higher than with(NH4)2SO4 agent......
Reduction leaching of rare earth from ion-adsorption type rare earths ore with ferrous sulfate肖燕飞1,2,3,冯宗玉1,2,黄莉1,2,3,黄小卫1,2,陈迎迎5,龙志奇1,21. National Engineering Research Center for Rare Earth... and the bigger cerium partition in the leaching liquor.In the ferrous sulfate column leaching process,the rare earth leaching rate and the rare earth efficiency were a little higher than with(NH4)2SO4 agent......
ferrous sulfate on its recovery of magnetite. Ferrous sulfate solution was purified by the addition of Na OH solution to precipitate impurities, and magnetite was recovered from ferrous sulfate solution without and with purification pretreatment. Calcium hydroxide was added to the solution of ferrous sulfate as a precipitator. A mixed product of magnetite and gypsum was subsequently obtained by air......
低了硫酸亚铁的溶解度. 图2 硫酸亚铁在不同硫酸浓度下的溶解度与温度的关系[15] Fig. 2 Relationship between solubility of ferrous sulfate and temperature at each sulfuric acid concentration[15] 图3 硫酸镁的溶解度与温度的关系[19] Fig... 高温体系下结晶时间对硫酸亚铁结晶的影响 Fig. 7 Effect of crystallization time on crystallization of ferrous sulfate under high temperature system 不同反应温度下结晶时间对硫酸亚铁的影响结果见图7.由图7(a)和(b)可知,在150 ℃时,随着结晶时间的延长,溶液中亚铁......
the mineral at the point of attachment by the enzymatic system of bacteria, oxidize them to sulfate. In indirect mechanism, the role of bacteria is to oxidize ferrous ions to ferric ions, and the ferric...[14]. 2.4 Analytical method The oxidation of ferrous sulfate by T. ferrooxidans was monitored by determining the remainder ferrous iron concentration at various intervals. The method of potassium......
; Relationship between solubility of ferrous sulfate and temperature at each sulfuric acid concentration HASEGAWA等[14]研究不同温度和硫酸浓度下硫酸亚铁的溶解度与温度的关系(见图1),当温度高于160 ℃时,c(Fe2+)<10 g/L.因此,采用赤铁矿法沉铁的过程中存在硫酸亚铁的严重结晶,硫酸亚铁...时间进而减少硫酸亚铁的结晶量,降低硫酸亚铁晶体对沉铁过程的影响. 图2 静止吸附对硫酸亚铁结晶的影响 Fig. 2 Effect of static adsorption on crystallization of ferrous sulfate 图3 FeSO4·XH2O结晶的SEM像 Fig. 3 SEM images of FeSO4·XH2O......
Trans. Nonferrous Met. Soc. China 30(2020) 492-500 Transformation behavior of ferrous sulfate during hematite precipitation for iron removal Zhi-gan DENG1, Fan YANG1, Chang WEI1, Bei-ping ZHU2, Peng... and Indium Co., Ltd., Wenshan 663701, China; 3. Yunnan Yuntong Zinc Co., Ltd., Kunming 650102, China Received 26 March 2019; accepted 10 November 2019 Abstract: The transformation behavior of ferrous sulfate......