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and acid mine drainage environment protection LIAO Rui(廖蕤)1, 2, YU Shi-chao(于世超)1, 2, WU Bai-qiang(邬柏强)1, 2, ZHAO Chun-xiao(赵春晓)1, 2, LIN Hao(林豪)1, 2, HONG Mao-xin(洪茂鑫)1, 2, WU Hai-yan(武海艳)1, YANG Cong-ren(杨... have caused serious environmental problems such as acid mine drainage (AMD). The understanding of some common sulfide minerals bioleaching processes and protection of AMD environment is reviewed......
. 2.2 双氧水浓度对人造白钨浸出率的影响 在c(HCl)=1.5 mol/L,液固比10:1,反应温度30 ℃和反应时间40 min的条件下,考察双氧水浓度对人造白钨浸出率的影响,结果如图4所示. 图3 盐酸浓度对人造白钨浸出率的影响 Fig. 3 Effect of hydrochloric acid concentration on leaching.... [15] KALPAKLI A O, ILHAN S, KAHRUMAN C, YUSUFOGLU I. Dissolution behavior of calcium tungstate in oxalic acid solutions[J]. Hydrometallurgy, 2012, 121/124: 7-15. [16] MARTINS J I. Leaching......
. [10] EKOLU S O, DIOP S, AZENE F, MKHIZE N. Disintegration of concrete construction induced by acid mine drainage attack [J]. Journal of the South African Institution of Civil Engineers, 2016, 58(1... J. Cent. South Univ. (2020) 27: 3821-3838 DOI: https://doi.org/10.1007/s11771-020-4473-0 Performance evaluation of nano-silica and silica fume on enhancing acid resistance of cement-based......
构和力学性能.结果表明,随氧分压的提高,涂层中氧含量逐步增加,氮含量相应减少,(Al+Ti):(O+N)的化学计量比仍约为1:1,涂层保持与(Al,Ti)N涂层相同的NaCl结构.低氧含量时薄膜在(111)方向上择优生长,随着氧含量的提高,涂层生长的择优取向发生改变,高氧含量薄膜样品呈现强烈(200)织构的柱状晶.与此同时,(Al,Ti)(O,N)涂层的硬度和弹性模量也仍保持在与(Al,Ti)N涂层相当的35GPa和370~420GPa的高值.由于涂层中形成了相当含量的氧化物,这类涂层的抗氧化能力有望得到提高. 关键词:反应溅射; (Al,Ti)(O,N)复合涂层; 微结构; 力学性能; [全文内容正在添加中] ......
Solvent extraction equilibrium of dysprosium(Ⅲ) from nitric acid solutions with 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester HUANG Ying1, 2, TANAKA Mikiya1 1. Research..., the development of a chemically based model applicable to high concentration is desired. In the present study, the equilibrium distribution of dysprosium(Ⅲ) between an aqueous nitric acid solution......
ARTICLE J. Cent. South Univ. (2019) 26: 343-352 DOI: https://doi.org/10.1007/s11771-019-4006-x Isolation of an acid producing Bacillus sp. EEEL02: Potential for bauxite residue neutralization WU... wasteland representing extreme hostile environment with increased alkalinity. Microbially-driven neutralization of bauxite residue, based on the microbial acid producing metabolisms, is a novel......
J. Cent. South Univ. (2016) 23: 39-43 DOI: 10.1007/s11771-016-3046-8 Kinetic study on leaching of nickel from Turkish lateritic ore in nitric acid solution Tevfik AGACAYAK, Veysel ZEDEF, Ali ARAS... of nickel from lateritic ore in nitric acid solution was investigated. Experimental parameters used were stirring speed (100-600 r/min), temperature (40-96 °C), nitric acid concentration (0.1-2 mol/L......
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钛工业5 O年安全回顾 () 摘要: 虽然从1950年才开始钛的工业化生产,但钛工业的发展实际应追溯到20世纪初.在钛工业的发展中,始终牵涉到安全问题.如熔炼炉爆炸,海绵钛着火,密闭仓体氧气不足等致人伤亡的问题.1.真空电弧炉问题通常钛的真空电弧熔炼是在水冷铜坩埚中进行的,这种设计方案就为因水的渗漏导致爆炸埋下了隐患.熔融的钛接触到水时,水变成了水蒸气,甚至分解成氧与氢.钛与氧的亲和力非常大,与水中的氧结合后释放出氢气,因此因水蒸气及其分解产生的氢气导致的爆炸就极可能发生.解决问题的关键,就是设计出的设备必须尽可能保证生产者和工厂的操作安全,即使发生爆炸,也能保证人身安全. [全文内容正在添加中] ......
fromstone coal by acid leaching with oxygen pressure[J]. Chinese Journal of Rare Metals, 2007, 31: 28-31. [7] 魏 昶, 樊 刚, 李旻廷, 邓志敢. 含钒石煤氧压酸浸中影响钒浸出率的主要因素[J]. 稀有金属, 2007, 31: 98-101.WEI Chang, FAN Gang, LI Min... of oxygen pressure acid leaching[J]. Chinese Journal of Rare Metals, 2007, 31: 140-145. [9] 魏 昶, 樊 刚, 李旻廷, 张家涛. 在压力场下从石煤中氧化转化浸出钒的方法. 中国专利1904092A [P]. 2007.WEI Chang, FAN Gang, LI Min-ting, ZHANG Jia......
