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in ammonia solution. The obvious advantage of ammonia leaching technology for zinc extraction is that the low grade zinc ores with high impurities can be treated[18-19]. Zinc is dissolved... Selective separation of copper and cadmium from zinc solutions by low current density electrolysis YANG Bo(杨 卜), WANG Cheng-yan(王成彦), LI Dun-fang(李敦钫), YIN Fei(尹 飞), CHEN Yong-qiang(陈永强), WANG......
of Rare Earth, 1993, 11(2): 142-147. [15] CHI R A. Extraction of rare earths from a low-grade, kaolinitic ore by percolation leaching [A]. BAUTISTA R G., WONG M M. Rare Earths Extraction Preparation... Correlation analysis on partition of rare earth in ion-exchangeable phase from weathered crust ores CHI Ru-an(池汝安), DAI Zu-xu(戴祖旭), XU Zhi-gao(徐志高), WU Yuan-xin(吴元欣), WANG Cun-wen(王存文) Key......
. Continuous flotation tests indicate that it is difficult to obtain sufficiently high cerussite concentrate grade only by froth flotation operation because of the low feed grade of it. Considering the high...: 1197-1208. [4]Rey M, De Merre P, Mancuso R, et al, Recent research and developments in flotation of oxidized ores of copper, lead and zinc [J]. Colo Sch Mines Q, 1961, 56(3): 163-175. [5]Maurice......
Bioleaching of copper oxide ore by P seudomonas aeruginosaM.A.Shabani1,M.Irannajad1,A.R.Azadmehr1,M.Meshkini1,21. Department of Mining & Metallurgical Engineering,Amirkabir University of Technology摘 要:Bioleaching is an environmentally friendly method for extraction of metal from ores.In this study,bioleaching of copper oxide ore by Pseudomonas......
; 文章编号:1672-7207(2011)05-1181-07 Effect of different energy sources on At.f bacterial leaching of low-grade copper tailings DONG Ying-bo, LIN Hai, MO Xiao-lan, FU Kai-bin (Key Laboratory..., China) Abstract: The effect of different energy sources on bio-leaching of the low-grade copper tailings was studied with strain Acidthiobacillus ferrooxidans (At.f ) LD-1. The results show that ferrous......
and proposal about rational utilization of medium and low grade phosphate ores in Hubei province [J]. Industrial Minerals and Processing, 2005(11): 1-4. [3] 龚贵生. 云南中低品位磷矿开发利用与问题探讨[J]. 中国工程科学, 2005, 7(9): 169-172. GONG Gui-sheng. Exploitation and utilization of Yunnan’s medium and low grade phosphate ores [J]. China Engineering Science, 2005, 7(9): 169-172. [4] 周洪波, 邱冠周, 邬长斌, 等. 嗜酸微生物生态学与矿物生物浸出技术[J]. 应用与......
performance and low cost. Key words: arsenic trioxide; copper arsenite; purification; copper electrolyte .... Reagent grade As2O3, NaOH, CuSO4·5H2O and concentrated H2SO4 were used in the preparation of copper arsenite. 2.1 Preparation of copper arsenite Copper arsenite was prepared by dissolving copper......
, most copper smeltings still adopt electrowinning to remove impurities in copper electrolyte[5-7]. In this method, current efficiency is low and energy consumption is high[8-9]. To the worse... on the laboratorial experiments. 2 Experimental 2.1 Materials and main equipment The following materials were used in the industrial experiment: industrial grade arsenic trioxide, sodium hydroxide, copper......
Pilot scale test of producing nickel concentrate from low-grade saprolitic laterite by direct reduction-magnetic separationZHENG Guo-lin(郑国林)1, ZHU De-qing(朱德庆)1, PAN Jian(潘建)1, LI Qi-hou(李启厚) 2... and Engineering, Central South University, Changsha 410083, China;3. China Nonferrous Metal Mining(Group), Co., Ltd, Beijing 100029, China)Abstract:The enrichment of Ni from a low-grade saprolitic laterite......
Preparation of boric acid from low-grade ascharite and recovery of magnesium sulfate LI Jie(李 杰)1, FAN Zhan-guo(樊占国)1, LIU Yan-li(刘艳丽)1, LIU Su-lan(刘素兰)1, JIANG Tao(姜 涛)1, XI Zheng...; accepted 19 January 2010 Abstract: Boric acid and kieserite were prepared from low-grade ascharite by sulfuric acid method. This method results in the recovery of 71.06% and 45.03% for boric acid......
