共搜索到8133条信息，每页显示10条信息，共814页。用时：0小时0分0秒521毫秒
leaching can effectively improve the gold leaching efficiency. Through once cyanide leaching after 15% sulfuric acid leaching and twice 2 mol/L NaOH and cyanide leaching, the total removal rates of iron...浸金的影响 研究了氢氧化钠预浸出过程氢氧化钠浓度对烟尘中砷碳脱除率,碱浸渣率及碱浸渣中金氰化浸出率的影响,试验结果如图1所示. 图1 氢氧化钠浓度对烟尘中有害元素脱除率,碱浸渣率及碱浸渣中金氰化浸出率的影响 Fig. 1 Effects of NaOH concentrations on removal rate of harmful element in dust......
......
controlled in addition to improvement of iron precipitation parameters. Key words: goethite residue; zinc; iron removal; zinc hydrometallurgy; occurrence characteristics 针铁矿法除铁工艺由比利时老山公司于20世纪60年代末开发[1-2...,除了优化沉铁工艺条件外,还需考虑中和剂品质. 参考文献: [1] DAVEY P T, SCOTT T R. Removal of iron from leach liquors by the goethite process[J]. Hydrometallurgy, 1976, 2(1): 25-33. [2] CHANG Yongfeng, ZHAI Xiujing, LI Binchuan......
. 硫酸铜除铁工艺的研究[J]. 济南大学学报: 自然科学版, 2003, 17(3): 289-291.JIANG Run-tian, ZHANG Zhen-wei, YUAN Mei-long, et al. Study on technology of iron removal from acid leaching liquid of copper sulfate[J]. Journal..., the comprehensive result of impurities elimination is the best, the removal rate of As, Sb, Bi, Fe are 94.17%, 45.95%, 88.64% and 98.83% respectively. Key words: copper sulfate; arsenic; antimony; bismuth......
and iron in Si-Al melt were investigated during Ar-H2 gas blowing treatment. The mechanism of boron removal was discussed. The results indicate that gas blowing can refine grain size and increase..., the removal efficiency of boron increases from 45.83% to 74.73% after 2.5 h gas blowing. The main impurity phases containing boron are in the form of TiB2, AlB2 and VB compounds and iron-containing one......
grade silicon[J]. Rare Metals, 2009, 28(3): 221-225. [12] XIE K Q, YU Z L, MA W H, ZHOU Y, DAI Y N. Removal of iron from metallurgical grade silicon with pressure leaching[J]. Material Science Forum, 2011, 675/677: 873-876. [13] YU Z L, XIE K Q, MA W H, YANG Z, GANG X, DAI Y N. Kinetics of iron removal from metallurgical grade silicon with pressure leaching[J]. Rare Metals, 2011, 30(6): 688-694. [14......
......
某平板玻璃用石英岩矿除铁试验研究 胡劲松1,吴国祥1,夏亮1,王勇1 (1.安徽省地质实验研究所,安徽合肥,230001) 摘要:对安徽某平板玻璃用石英岩矿进行除铁试验,证明通过磨矿,分级,弱磁,脱泥,擦洗,再脱泥,强磁等选矿方法,可以获得SiO_2>98%,Fe_2O_3 关键词:石英岩矿; 磁选; 擦洗; 正交试验; 除铁率; quartzite ore; magnetic separation; scrub; orthogonal experiment; iron removal ratio; [全文内容正在添加中] ......
Article ID: 1003-6326(2005)06-1394-07 Removal of cadmium from cadmium-contaminated red soils using electrokinetic soil processing LIU Yun-guo(刘云国), LI Cheng-feng(李程峰), ZENG Guang-ming(曾光明...) Abstract: To investigate the feasibility of electrokinetic soil processing on the removal of Cd from Cd-contaminated red soils, a laboratory experiment was conducted. A constant direct current density......
Removal of SO42-, uranium and other heavy metal ions from simulated solution by sulfate reducing bacteria WANG Qing-liang(王清良)1, 2, DING De-xin(丁德馨)2, HU E-ming(胡鄂明)2, YU RUN-lan... and results in the groundwater contamination. The effects of pH values of the simulated solution on the reduction of SO42- and the removal of uranium and other heavy metal ions by sulfate reducing bacteria(SRB......
