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sodium sulfide(Na2S) is added into 0.5 L wastewater and the dosage of total iron is 84 mg?L-1, the removal rates of Cu, Pb, Cr and turbidity are up to 84.69%, 99.97%, 98.9% and 99.14%, respectively...). The industrial experimental proves that the treated wastewater can be recycled. Key words: mineral processing wastewater; chromium; polyferric sulfate; copperas; sodium sulphide ......
, and the electrochemical corrosion behavior was investigated mainly by polarization curve and impedance spectroscopy. The mass loss rate, corrosion area rate and corrosion depth were researched by the salt...; salt spray corrosion 铝及其合金因其质量轻,比强度高,塑性好以及可回收利用等优点,广泛应用于航空航天,轨道交通等领域[1-3].7A04铝合金属于Al-Zn-Mg-Cu系合金,该类合金还具有较强的韧性以及优良的焊接性能,在交通运输业中占据非常重要的地位[4-6],是交通运载工具轻量化的首选材料之一. 但铝合金的凝固温度范围宽,传统铸造成型难以避免疏松,偏析,缩孔及热裂等缺陷,塑性......
Segregation of Molten Salt on Chromizing in Thermal Diffusion Process王洪福School of Mechanical Engineering and Automation,North University of China摘 要:The segregation of thermal diffusion salt bath chromizing process was analyzed. The experimental chromizing ingredients were prepared by the four groups A, B, C, and D. In order to study the segregation......
Pyrite depression in marmatite flotation by sodium glycerine-xanthate HE Ming-fei, QIN Wen-qing, LI Wei-zhong, ZENG Ke School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China Received 6 January 2010; accepted 15 March 2010 Abstract: The depression of pyrite in marmatite flotation by sodium glycerine-xanthate (SGX) was investigated through......
Generation of sodium hypochlorite (NaOCl) from sodium chloride solution using C/PbO2 and Pb/PbO2 electrodesNasser Abu Ghalwa,Hassan Tamos,Mohamed ElAskalni,Abed Rhman El AghaChemistry Department,Al... and carbon sub-strates. These modified electrodes were used as anodes for the generation of sodium hypochlorite (NaOCl) from sodium chloride solution. Different operating conditions and factors......
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)03-0579-08 Lithium removal from sodium aluminate solution and its reaction mechanism TANG Wenqi, PENG Zhihong, LIU Guihua, ZHOU Qiusheng, QI Tiangui, LI Xiaobin (National Engineering Laboratory for Efficient Utilization of Refractory Nonferrous Metal Resources,School of Metallurgy and Environment, Central South University, Changsha 410083, China) Abstract: The lithium in sodium aluminate solution......
sodium sub-molten salt medium[J]. Advanced Materials Research, 2012, 402: 253-260. [9] 郑诗礼, 杜 浩, 王少娜, 王晓辉, 张 懿, 陈东辉. 一种使用氢氧化钠熔盐分解含铬钒渣的方法: 中国, CN 102127654 A[P]. 2011-07-20.ZHENG Shi-li, DU Hao, WANG Shao... in low temperature NaOH sub-molten salt (SMS) system, the method adding activated carbon to increase medium oxygen content to strengthen chromium oxide dissolution was proposed......
Post treatment of silane and cerium salt as chromate replacers on galvanized steel WU Haijiang1,LU Jintang1,KONG Gang1 (1.School of Materials Science and Engineering, South China University.... The corrosion protection of the complex film was evaluated by potentiodynamic linear polarization(LPR), electrochemical impendence spectra (EIS) and natural salt spray (NSS) tests and compared......
; 文献标识码: A Flotation mechanism of fine ilmenite by sodium oleate ZHANG Guo-fan, ZHU Yang-ge, FENG Qi-ming, LU Yi-ping, OU Le-ming (School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, China) Abstract: The flotation of fine ilmenite using sodium oleate as collector and the collection mechanism were studied......
