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Surface characteristics of chemical conversion coating for Mg-Al alloy Masazumi OKIDO1, Ryoichi ICHINO1, Seong-Jong KIM2, Seok-Ki JANG2, 1. Nagoya University, Furo-cho, Chikusa-ku...; Abstract: The chemical conversion coating......
in the pollution control of water body. Cr(VI) can be removed from aqueous solution by many technologies such as chemical reduction to Cr(III) followed by precipitation [6], adsorption [7], ion exchange [8...) reduction. Their chemical compositions are shown in Table 1, which indicates high Fe and C content samples, except reduced iron powder. Potassium dichromate (K2Cr2O7), sulfuric acid (H2SO4) and other......
that reduction percentage is decreasing with increasing initial Cr(VI) concentration. The chemical oxygen demand of bauxite ore was found to be 26 mg COD/g.Key words:bauxite ore; chromium; reduction...A study on Cr(VI) reduction from aqueous solutions by bauxiteM. D. TURAN1, H. S. ALTUNDO？AN2(1. Department of Metallurgical and Materials Engineering, Firat University, Elaz？？ 23119, Turkey;2......
Reduction roasting–magnetic separation of vanadium tailings in presence of sodium sulfate and its mechanismsYu-Lei Sui1,Yu-Feng Guo1,Andrew Yakovlevich Travyanov2,Tao Jiang1,Feng Chen1,Guan-Zhou... id="ChDivSummary" name="ChDivSummary">Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2......
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, and chemical analysis. A good degree of metallization and reduction was achieved. Gas diffusion through the solid was identified as the reaction-rate-controlling resistance; however, during the initial...Kinetic studies on the reduction of iron ore nuggets by devolatilization of lean-grade coalChanchal Biswas1,Prithviraj Gupta1,Arnab De2,Mahua Ghosh Chaudhuri3,Rajib Dey11. Department Metallurgical......
Growth of ZnO Single Crystal by Chemical Vapor Transport Method Zhao Youwen1,Wei Xuecheng1,Li Jinmin1,Duan Manlong1,Dong Zhiyuan1 (1.Institute of Semiconductor, Chinese Academy of Sciences, Beijing 100083, China) Abstract:ZnO crystals were grown by CVT method in closed quartz tube under seeded condition. Carbon was used as a transport agent to enhance the chemical transport of ZnO......
preparation of nitrogen-doped graphene as a metal-free catalyst for oxygen reduction reaction [J]. Physical Chemistry Chemical Physics, 2012, 14(10): 3381-3387.DOI:10.1039/c2cp00032f. [20] LI Xiao-lin, WANG Hai-liang, ROBINSON J T, SANCHEZH, DIANKOV G, DAI Hong-jie. Simultaneous nitrogen doping and reduction of graphene oxide [J]. Journal of the American Chemical Society, 2009, 131(43): 15939-15944. DOI......
Mineralogy and carbothermal reduction behaviour of vanadium-bearing titaniferous magnetite ore in Eastern IndiaSaikat Samanta1,Tapan Kumar Baidya3,Siddhartha Mukherjee1,Rajib Dey11. Department...,and V,was performed by reduction roasting.The direct and indirect reduction were investigated by mixing the lump ore with solid activated charcoal in a closed reactor and purging the reducing gas......
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