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Extraction of niobium, yttrium, and cerium from a low-grade niobium-bearing ore by roasting(NH4)2SO4-Na2SO4-H2SO4 systemWen-Cheng Gao,Jian-Kang Wen,Biao Wu,He ShangNational Engineering Laboratory...-bearing ore by the roasting(NH4)2SO4-Na2SO4-H2SO4 system was experimentally studied. The influences of various factors,such as roasting temperature, roasting time, mass ratio of agents-to-ore......
by a step solid-phase in an argon with LiOH·H2O as lithium source and Mn2O3 (roasting EMD at 680 ℃ for 6 h) as manganese source. The mixture of Mn2O3 and LiOH·H2O was analyzed by thermogravimetric... temperature of LiMnO2 should be controlled at above 500 ℃. The optimum condition for preparing LiMnO2 is as follows: mole ratio of lithium to manganese 1.03, roasting temperature 600 ℃, roasting time......
Thermodynamics and kinetics of alumina extraction from fly ash using an ammonium hydrogen sulfate roasting methodRuo-chao Wang,Yu-chun Zhai,Zhi-qiang NingSchool of Materials and Metallurgy, Northeastern University摘 要:A novel method was developed for extracting alumina(Al2O3)from fly ash using an ammonium hydrogen sulfate(NH4HSO4)roasting process......
类号:TF821 文献标志码:A Roasting process of mixture of high ferric bauxite and ammonium bisulfate XIN Hai-xia, WU Yan, LIU Shao-ming, ZHAI Yu-chun (School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract: A novel process of roasting high-iron bauxite using ammonium bisulfate was proposed to overcome the defects......
:1672-7207(2010)03-0852-07 Desulfuration of high sulfur bauxite by oxidation roasting HU Xiao-lian, CHEN Wen-mi, XIE Qiao-ling (School of Metallurgical Science and Engineering, Central South University, Changsha 410083,China) Abstract: Using the two kinds of ore from Henan province, the oxidation roasting process of the desulfuration from the diasporic high sulfur bauxite was studied......
Processing and Bioengineering,Central South University摘 要:Consolidation in calcines is a common problem in the oxygen-enriched air roasting of refractory gold.... Oxidation of the pyrite and decomposition of the dolomite and muscovite mainly occurred at the initial stage of oxygen-enriched air roasting. Calcium was confirmed to be essential to the consolidation......
Trans. Nonferrous Met. Soc. China 24(2014) 848-853 Reaction kinetics of roasting high-titanium slag with concentrated sulfuric acid Li-li SUI1,2, Yu-chun ZHAI1 1. School of Materials and Metallurgy... of roasting high-titanium slag with concentrated sulfuric acid was proposed to prepare titanium dioxide, and the roasting kinetics of titania was studied on the basis of roasting process. The effects......
生产的理想原料. 关键词:钛铁矿;氧化预处理;流态化浸出;人造金红石;沸腾氯化 中图分类号:TF111 文献标志码:A Producing process of high quality synthetic rutile for fluidizing chlorination XIONG Xue-liang, YANG Zhi... of 0.30%, 94% particle with size bigger than 100 μm, which is the ideal raw material of fluidizing chlorination process. Key words: ilmenite; oxidation-modified; fluidization leaching; synthetic rutile......
and waste discharge. A method of microwave roasting was adopted for dechlorination of CuCl residue. A 1.5 kW microwave roasting equipment with dust collection and tail gas adsorption systems was set up... rate is as high as 90%, while that with conventional heating is only 60%-80%. The phase change of the roasting process investigated with X-ray diffraction verifies that CuCl in CuCl residue is removed......