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Microbial leaching of chromite overburden from Sukinda mines,Orissa,India using Aspergillus nigerSupratim Biswas1,Saikat Samanta1,Rajib Dey1,Siddhartha Mukherjee1,Pataki C.Banerjee21. Department...="ChDivSummary">Leaching of nickel and cobalt from two physical grades(S1,125-190 μm,coarser and S3,53-75 μm,finer) of chromite overburden was achieved by treating the overburden(2% pulp density......
Effect of mechanical activation on alkali leaching of chromite ore ZHANG Yang(张 洋)1, 2, ZHENG Shi-li(郑诗礼)1, DU Hao(杜 浩)1, XU Hong-bin(徐红彬)1, ZHANG Yi(张 懿)1 1. National Engineering Laboratory.... It is observed that the extraction ratio reaches 97% after leaching for 200 min when chromite ore is mechanically activated for 10 min, but only 34% if not activated. Mechanical activation can decrease......
J. Cent. South Univ. Technol. (2011) 18: 83-88 DOI: 10.1007/s11771-011-0663-0 Thermodynamics of chromite ore oxidative roasting process QI Tian-gui(齐天贵), LIU Nan(刘楠), LI Xiao-bin(李小斌), PENG...-Verlag Berlin Heidelberg 2011 Abstract: To explicate the thermodynamics of the chromite ore lime-free roasting process, the thermodynamics of reactions involved in this process was calculated......
) on the nickel bioleaching from pre-treated chromite overburden (COB), Sukinda with fungal strain Aspergillus niger, was examined in shake flasks. Along with the nickel recovery from COB by the fungal bioleaching...% nickel was extracted without surfactant. Key words: nickel; surfactant; Tween-20; chromite overburden; Aspergillus niger; microbial extraction; bioleaching; cellular metabolism; organic metabolite 1......
THERMODYNAMIC STUDY OF CHROMITE CAUSTICFUSION PROCESS S.L.Zheng1,Y.Zhang1 (1.Institute of Chemical Metallurgy, the Chinese Academy of Sciences, Beijing 100080, China) Abstract:A new method for chromate cleaning production named chromite caustic fusion pro-cess, is advanced by Institute of Chemical Metallurgy, the Chinese Academy of Sci-ences. With sodium hydroxide as reaction medium, the new......
University, Dalian 116622, China)Abstract:The fault is one important factor for the stability of overburden strata caused by steeply inclined coal seam. The stress and displacement change of overburden... of overburden strata can provide theoretical basis for the similar mining condition.Key words:fault; steep-inclined coal seam; numerical simulation; overburden distortion......
Experimental research of overburden movement and subsurface water seeping in shallow seam miningQingxiang Huang1,2) 1) School of Energy and Resource, Xi’an University of Science and Technology, Xi... prepared to study overburden movement and aquiclude stability in the shallow seam mining of Yushuwan Coalfield, China. According to the characteristic of clay aquiclude and bedrock in the overburden......
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Microstructure of Electrodeposited Cu Micro-cylinders in High-Aspect-Ratio Blind Holes and Crystallographic Texture of the Cu Overburden FilmYazhou Zhang,Guifu Ding,Hong Wang,Ping ChengNational Key...(coincident site lattice)boundaries.It has been reported that the Cu overburden film on the surface of the blind hole influenced the crystallographic orientation of Cu grains inside the damascene......
THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH S.L. Zheng1,Z. Sun1,J.Y. Zhang3,Y. Zhang3 (1.Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China... Engineering, Chinese Academy of Sciences, China, has proposed a method for oxidative leaching of chromite with potassium hydroxide. Understanding the mechanism of chromite decomposition, especially......