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度可达99%以上; 低浓度含钒溶液沉钒时, 按其生成APV质量的1/200加入晶种破坏溶液过饱和度, 可将沉钒时间缩短25%; 得到的沉淀物经液固比为40∶ 1的自来水洗涤, 能将APV中Na~+, K~+含量降至0.24%, 且钒损失率仅为0.2%. 关键词:酸性铵盐沉钒; 石煤; 多聚钒酸铵; acidic precipitation of vanadate-leaching solution; stone coal; ammonium polyvanadate; [全文内容正在添加中] ......
Relationship between electrochemical characteristics and SCC of X70 pipeline steel in an acidic soil simulated solution Yingrui ZHANG1,Zhiyong LIU2,Guoli ZHAI2,Cuiwei DU2,Xiaogang LI2 (1.Mechanical...,Beijing 100083,China) Abstract:Stress corrosion cracking (SCC) of X70 pipeline steel in simulated solution of the acidic soil in Yingtan in China was investigated using slow strain rate test (SSRT......
Effects of Na4EDTA and EDTA on seeded precipitation of sodium aluminate solution L? Bao-lin(吕保林), CHEN Qi-yuan(陈启元), YIN Zhou-lan(尹周澜), HU Hui-ping(胡慧萍) School of Chemistry and Chemical... ____________________________________________________________________________________________ Abstract: Na4EDTA and EDTA were adopted as new additives to intensify the seeded precipitation process of sodium aluminate solution. The effects of the two additives at certain concentrations......
Periodical attenuation of Al(OH)3 particles from seed precipitation inseeded sodium aluminate solution WU Yu-sheng(吴玉胜)1, ZHANG Di(张 迪)1, LI Ming-chun(李明春)1, BI Shi-wen(毕诗文)2, YANG Yi-hong... aluminate solution; periodical attenuation; additive; seed precipitation  ......
Combined effect of amino and carboxyl group in α-alanine on seeded precipitation of sodium aluminate solution L? Bao-lin(吕保林), CHEN Qi-yuan(陈启元), YIN Zhou-lan(尹周澜), HU Hui-ping(胡慧萍) School... precipitation mechanism of sodium aluminate solution. α-alanine has the inhibitory effect at the initial period of reaction, but the favorable effect in subsequent reaction. The combined effect of amino......
; 文献标志码:A Reactive behaviors between As(Ⅲ) and metallic iron in acidic aqueous solution LIU Zhi-hong, PAN Qing-lin, LIU Zhi-yong, LI Yu-hu, LI Qi-hou (School...: As(Ⅲ); metallic iron; acidic aqueous solution; reactive behavior 砷属剧毒,为致癌元素,广泛伴生于铜,铅,镍,钴,锡和锑等有色金属矿中[1-3],研究砷在冶炼过程中的行为,对安全生产与环境保护,意义重大. 含砷复杂冶金原料,包括矿石或精矿[4-6],各类烟尘[7],阳极泥[8],污酸硫化砷渣[9]和黑铜粉[10]等,广泛采用酸性体系湿法冶......
Phenomena in late period of seeded precipitation of sodium aluminate solution LI Xiao-bin(李小斌), FENG Gang-tao(冯港涛), ZHOU Qiu-sheng(周秋生), PENG Zhi-hong(彭志宏), LIU Gui-hua(刘桂华) School...; Abstract: Aiming at seeded precipitation of aluminate solution with high caustic......
ARTICLE J. Cent. South Univ. (2019) 26: 312-322 DOI: https://doi.org/10.1007/s11771-019-4003-0 Intensifying gibbsite precipitation from sodium aluminate solution by adding a mixed seed LI Xiao-bin..., China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Gibbsite precipitation from sodium aluminate solution was intensified by adding mixed......
Aging Precipitation Characterics of Lead Frame Cu-Cr-Zr-Mg Alloy LI He-jun1,KANG Bu-xi2,DONG Qi-ming2,LIU Ping2,SU Jua-hua2 (1.Northwestern Polytechnical University, Xi'an China;2.Henan University... for good hardening and electrical conductivity can be obtained by solution treating at 920℃ for lh and aging at 470℃ for 4h and at 550℃ for lh. The hardness and electrical conductivity can reach 108HV......