共搜索到7502条信息，每页显示10条信息，共751页。用时：0小时0分0秒509毫秒
Catalytic effect of activated carbon on bioleaching of low-grade primary copper sulfide ores ZHANG Wei-min(张卫民)1, GU Shi-fei(谷士飞)2 1. School of Civil and Environmental Engineering, East China... June 2007 ______________________________________________________________ Abstract: The catalytic effect of activated carbon on the bioleaching of low-grade primary copper sulfide ores using mixture......
(Central South University), Changsha 410083, China)Abstract:For the low-grade copper sulfide ores with 0.99% of copper, of which 41.5% was primary copper sulfide, and 54.5% was secondary copper sulfide...Well-controlled column bioleaching of a low-grade copper ore by a novel equipmentWANG Jun(王军)1, 2, HU Ming-hao(胡明皓)1, 2, ZHAO Hong-bo(赵红波)1, 2, TAO Lang(陶浪)1, 2, GAN Xiao-wen(甘晓文)1, 2, QIN Wen-qing......
......
sample 3.1 Dump leaching of Dexing Copper Mine The Dexing Copper Mine is a porphyry copper deposit. 1.17 billion tons of low-grade ores will be produced during the open pit mining, and the total copper... and 2. The main elements are Si, Al, Ca and Mg, with some Mo and As. The Cu grade is low and less than 1%. Most of the ores are primary sulfide copper, and contain small secondary copper sulfide......
Bioleaching of low-grade copper sulfide ores by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidansWANG Jun(王军)1, 2, ZHU Shan(朱珊)1, 2, ZHANG Yan-sheng(张雁生)1, 2, ZHAO Hong-bo(赵红波)1, 2.... The bioleaching rates reach their highest point in sulfide copper and chalcopyrite with a pulp density of 5% and 10%, respectively. Column flotation experiments of low-grade copper sulfide ores show......
. Therefore, recovery of copper from low-grade ores, waste rocks, tailings, etc, which were abandoned before has been focused due to the depletion of higher grade copper sulfides [1-4]. Hydrometallurgical methods are used to extract metallic values from low-grade ores [5-7]. Sulfuric acid is the most common lixiviant used for copper leaching [8-9]. However, acid leaching for the preponderance......
J. Cent. South Univ. Technol. (2007)04-0584-05 DOI: 10.1007/s11771-007-0112-2 Experimental study on preferential solution flow during dump leaching of low-grade ores YIN Sheng-hua(尹升华)1, WU Ai... solution flow during dump leaching of low-grade ores was studied. The formative mechanism of preferential solution flow was investigated through analyzing the relationship between permeability and ore......
Simulated small-scale pilot heap leaching of low-grade copper sulfide ore with selective extraction of copper QIN Wen-qing(覃文庆), ZHANG Yan-sheng(张雁生), LI Wei-zhong(黎维中), WANG Jun(王 军) School...; Abstract: The bioleaching of low-grade copper sulfide ore and the selective......
......
from the much more abundant reserves of low-grade copper sulfide ores to meet the demand of market [2]. Currently, low-grade copper ores could not be economically processed by the conventional energy-intensive comminution, floatation and pyrometallurgical technologies. On the contrary, heap bioleaching is a promising alternative to extract copper from low-grade ores ascribing to its......
