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Kinetics study of leaching arsenic from Ni-Mo ore roasting in dust mixture of hydrochloric and sulfuric acidsHOU Xiao-chuan(侯晓川)1, 2, YANG Yun-de(杨润德)1, LI He(李贺)1, ZENG-li(曾理)2, XIAO Lian-sheng(肖连生... the roasting dust could be expressed by a semi-empirical equation asKey words:Ni-Mo ore; roasting dust; arsenic; leaching kinetics......
J. Cent. South Univ. (2017) 24: 1544-1550 DOI: 10.1007/s11771-017-3559-9 Kinetics of roasting potash feldspar in presence of sodium carbonate LIU Jia-nan(刘佳囡)1, ZHAI Yu-chun(翟玉春)1, 2, WU Yan(吴艳)1... granularity of 74–89 μm, molar ratio of sodium carbonate to potash feldspar of 1.2:1, and roasting time of 80 min. The kinetics of potash feldspar roasting in the presence of sodium carbonate was described......
, respectively. Key words: zinc oxide ore; NaOH roasting method; reaction process; reaction mechanism; kinetics 1 Introduction As an important nonferrous metal, zinc is widely used in galvanizing... and 61% silica were extracted when roasting temperature was 500 °C and reaction time was 120 min. The extraction kinetics of zinc oxide and silica was investigated too. The plots of right-hand sides......
J. Cent. South Univ. (2016) 23: 2999-3005 DOI: 10.1007/s11771-016-3363-y Oxidation and roasting characteristics of artificial magnetite pellets ZHANG Han-quan(张汉泉), LU Man-man(路漫漫), FU Jin-tao(付金涛... degree approaching to natural magnetite concentrate pellet fired at 1000 °C. Besides, two kinds of pellets displayed quite different roasting characteristics. When preheated at the same temperature......
the kinetics, the reaction thermodynamics and the mechanism of the reactions between Na2CO3 and chromite ore. In this work, the thermodynamics of the reactions involved in lime-free roasting process...]. Metallurgical and Materials Transactions B, 2003, 34B(4): 555-563. [7] TATHAVADKAR V D, ANTONY M P, JHA A. The soda-ash roasting of chromite minerals: Kinetics considerations [J]. Metallurgical......
Kinetics of Vanadium Oxidation during Bone Coal Roasting in Air郭伟,范其明,胡长平摘 要:ＫｉｎｅｔｉｃｓｏｆＶａｎａｄｉｕｍＯｘｉｄａｔｉｏｎｄｕｒｉｎｇＢｏｎｅＣｏａｌＲｏａｓｔｉｎｇｉｎＡｉｒＧｕｏＷｅｉ(郭伟)(ＧｅｎｅｒａｌＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｆｏＮｏｎ－ｆｅｒｒｏｕｓＭｅｔａｌｓ,Ｂｅｉｊｉｎｇ１０００８８,Ｃｈ...关键词:......
/mol. Key words: acid-leaching residue; sulfation roasting; chlorine salt; Pb, Ag; kinetics Cite this article as: WANG Rui-xiang, YANG Yu-dong, LIU Cha-xiang, ZHOU Jie, FANG Zhuang, YAN Kang, TIAN Lei... pattern for chlorinated leaching residue 3.4 Kinetics of oxygen-rich silver chloride The Ag in the zinc acid-leaching residue mainly existed in the form of Ag2SO4 after sulfation roasting and water leaching......
Thermodynamics and kinetics of extracting zinc from zinc oxide ore by the ammonium sulfate roasting methodYi Sun,Xiao-yi Shen,Yu-chun ZhaiSchool of Materials and Metallurgy, Northeastern University摘... of zinc were also examined. It is found that a surface chemical reaction is the rate-controlling step in roasting kinetics. The calculated activation energy of this process is about 45.57 k J/mol......
Decomposition of mixed rare earth concentrate by NaOH roasting and kinetics of hydrochloric acid leaching processMei Li1,2,3,Jianfei Li1,2,Dongliang Zhang2,3,Kai Gao2,3,Huihui Wang2,Wei Xu2,Jinlong... of Chemical Technology摘 要:A new clean extraction technology for the decomposition of Bayan Obo mixed rare earth concentrate by NaOH roasting is proposed.The process......
Decomposition of mixed rare earth concentrate by NaOH roasting and kinetics of hydrochloric acid leaching processMei Li1,2,3,Jianfei Li1,2,Dongliang Zhang2,3,Kai Gao2,3,Huihui Wang2,Wei Xu2,Jinlong... of Chemical Technology摘 要:A new clean extraction technology for the decomposition of Bayan Obo mixed rare earth concentrate by NaOH roasting is proposed.The process......
