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NaOH溶液浓度2 mol/L,碱溶液与多金属料液固比为10:1,浸出时间120 min条件下,考察浸出温度对金属浸出率的影响,实验结果如图2所示. 图2 浸出温度对金属浸出率的影响 Fig. 2 Effect of leaching temperature on leaching efficiency of metals 由图2可知,随着浸出温度升高,Al的浸出率变化不大...反应过程中溶液溢出,选取30 ℃作为低碱浸出的适宜温度. 2.1.2 浸出时间对金属浸出率的影响 在NaOH溶液浓度为2 mol/L,碱溶液与多金属料液固比为10:1,浸出温度为30 ℃条件下,考察浸出时间对金属浸出率的影响,实验结果如图3所示. 图3 浸出时间对金属浸出率的影响 Fig. 3 Effect of leaching time......
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parameters on As and Se leaching from coal fly ash samples [J]. Analytica Chimica Acta, 2005, 531: 299-305. [12] SHUNSUKE K, HAJIME O, YUICHI K, HIROSHI K, KAZUYO M, TETSUYA N. Dissolution behavior...Trans. Nonferrous Met. Soc. China 24(2014) 536-543 Leaching kinetics of selenium from selenium-tellurium-rich materials in sodium sulfite solutions Ya-jie ZHENG1, Kun-kun CHEN 2 1. School......
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; Abstract: The bioleaching behavior of low... and coarse regions increases during the leaching period, and the preferential solution flow shifts from fine region to coarse region. The surface of the ores at the top of dump is attacked seriously......
Kinetics study of leaching arsenic from Ni-Mo ore roasting in dust mixture of hydrochloric and sulfuric acidsHOU Xiao-chuan(侯晓川)1, 2, YANG Yun-de(杨润德)1, LI He(李贺)1, ZENG-li(曾理)2, XIAO Lian-sheng(肖连生... of leaching arsenic from Ni-Mo ore roasting dust was investigated. The effects including leaching temperature, particle size of the smelter dust, stirring speed, the coef?cient β (the molar ratio of sodium......
比为1:3,浸出时间为48 h的条件下,金的浸出率为87.83%. 关键词:氰化尾渣;脱硅;碱浸出;氰化浸出 中图分类号:TF 11.31 文献标志码:A Recovering gold from cyanide residue by alkaline predesilication-cyanide leaching technique WANG... State Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China) Abstract: High-concentration alkaline leaching was used to treat......