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Leaching isomorphism rare earths from phosphorite ore by sulfuric acid and phosphoric acidHui-Xin Jin1,2,Fu-Zhong Wu1,2,Xiao-Hao Mao1,Mei-Long Wang1,Hong-Yan Xie11. College of Materials... in the world contain isomorphism rare earths(RE) which are considerably difficult to be leached into solution in the wet phosphoric acid process. In this work, a systematic study of leaching RE using sulfuric......
New Environment-Friendly Approach for Bastnasite Metallurgic Treatment (I): Extraction of Tetravalent Cerium from Sulphuric Acid Medium with Di(2-ethylhexyl) Phosphoric Acid Cui Dali1,Zhang...) from sulphuric acid medium with Di(2-ethylhexyl) phosphoric acid(DEHPA) was studied. The influence of sulphate ion, acidity, extractant concentration as well as the presence of fluoride ion......
Study on Extracting Rare Earth from Sulfate System by Long-Chain Fatty Acid ZHAO Zengqi1,Xu Yanhui1,Liu Quansheng2 (1.Baotou Research Institute of Rare Earth, Baotou 014010, China;2.Inner Mongolia Polytechnic University, Huhehaote 010062, China) Abstract:The extraction of rare earths by long-chain fatty acid in kerosene from sulphate system was described.It was demonstrated from......
; 文章编号:1672-7207(2012)01-0038-08 Ions distributional characteristics of wet precipitation in typical acid rain areas of China XIANG Ren-jun1, 2, CHAI Li-yuan1, ZHANG Qing-mei2, XIAO... monitoring data of the three catchments, i.e., Caijiatang, Leigongshan and Tieshanping in typical acid areas of China, the chemical compositions characteristics of wet precipitation were studied......
Synthesis and Characterization of Lanthanum Complexes with Amino Acid Schiff Base 张有娟1,杨林2,张秀英2 (1.Department of Chemistry, Anyang Teachers College,;2.Department of Chemistry, Henan Normal University,) Abstract:Six new complexes of lanthanum with amino acid Schiff base ligands, A-F, were prepared in methanol-aqueous solution. The composition and properties of the title complexes were......
Corrosion resistance of tannic acid, d-limonene and nano-ZrO2 modified epoxy coatings in acid corrosion environmentsJunwei Chang1,2,Zhenyu Wang2,En-hou Han2,Xinlei Liang3,Gang Wang3,Zuyao Yi3,Na Li31... of Sciences3. Huadian Zhengzhou Mechanical Design Institute Co., Ltd.摘 要:The protection of rusted carbon steel in acid corrosion environments is of great......
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Spectrofluorimetric determination of terbium with terephthalic acidZHAO Guohu and ZHAO JunBasic Science Department, Gansu Agricultural University, Lanzhou 730070, China摘 要:<正>A spectrofluorimetric method has been developed for the determination of terbium(III) based on the formation ofa complex with terephthalic acid [benzene-1,4-dicarboxylic acid......
Effect of manganese and potassium addition on CeO_2-Al_2O_3 catalyst for hydrogenation of benzoic acid to benzaldehyde CHEN Fengqiu1,CHENG Dangguo1,HOU Chunyang1,ZHAN Xiaoli1 (1.Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China) Abstract:A series of Mn/CeO_2-Al_2O_3 and K/CeO_2-Al_2O_3 catalysts for hydrogenation of benzoic acid to benzaldehyde......
Sulfuric acid leaching of high iron-bearing zinc calcineJin-lin Yang1,2,Ji-guang Liu1,Han-xin Xiao1,Shao-jian Ma1,21. College of Resources,Environment and Materials,Guangxi University2. Ministry...="ChDivSummary" name="ChDivSummary">Sulfuric acid leaching of high iron-bearing zinc calcine was investigated to assess the effects of sulfuric acid concentration, liquid-to-solid ratio, leaching time, leaching......