共搜索到17905条信息，每页显示10条信息，共1791页。用时：0小时0分0秒469毫秒
; 文献标志码:A 文章编号:1672-7207(2014)02-0356-05 Leaching of Ag from residue containing silver with sodium sulfite... 410015, China) Abstract: Pretreatment with dilute nitric acid-leaching with sodium sulfite process was adopted to recover silver from silver separating residue. The effects of the concentration......
Engineering, 2003, 16(9): 793-805. [11] 熊 瑶, 李 春, 梁 斌, 谢 军. 盐酸浸出自然冷却含钛高炉渣[J]. 中国有色金属学报, 2008, 18(3): 557-563.XIONG Yao, LI Chun, LIANG Bin, XIE Jun. Leaching behavior of air cooled Ti-bearing blast-furnace...；钒浸出率 中图分类号:TF803.21 文献标志码:A Leaching vanadium from extracted vanadium residue of vanadium titanomagnetite DENG Zhi-gan, WEI Chang, LI Xing-bin......
J. Cent. South Univ. (2016) 23: 2935-2940 DOI: 10.1007/s11771-016-3357-9 Nonlinear chaotic characteristic in leaching process and prediction of leaching cycle period LIU Chao(刘超), WU Ai-xiang(吴爱祥... 100083, China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: A laboratory leaching experiment with samples of different grades was carried out, and an analytical......
impurities, the pure C4A3S was synthesized by adding calcium sulfate as the source of sulfur in this work. The structure of C4A3S was characterized, and the alumina leaching behavior and mechanism were...Trans. Nonferrous Met. Soc. China 27(2017) 2090-2095 Synthesis and alumina leaching mechanism of calcium sulphoaluminate Bo WANG1,2, Wei-qin CHU1, Yuan-liang HAO1, Shuo RONG1, Hui-lan SUN1,2 1......
leaching and solvent extraction S M MASLOBOEVA, L G ARUTYUNYAN, M N PALATNIKOV, D V MANUKOVSKAYA Tananaev Institute of Chemistry – Subdivision of the Federal Research Centre, Kola Science Centre... residue were determined. Fluoride-sulfuric acid and fluoride-nitric acid schemes were proposed for PMC leaching by an extractive separation of tantalum form niobium, lead and impurities, and production......
Kinetics of reductive leaching of manganese oxide ore using cellulose as reductantWU Fang-fang(武芳芳)1, 2, ZHONG Hong(钟宏)1, 2, WANG Shuai(王帅)1, 2, LAI Su-feng(赖素凤)1, 2(1. College of Chemistry..., China)Abstract:The kinetics of reductive leaching of manganese from a low-grade manganese oxide ore were studied using cellulose as reductant in dilute sulfuric acid medium. It was found that when......
Effect of mechanical activation on alkali leaching of chromite ore ZHANG Yang(张 洋)1, 2, ZHENG Shi-li(郑诗礼)1, DU Hao(杜 浩)1, XU Hong-bin(徐红彬)1, ZHANG Yi(张 懿)1 1. National Engineering Laboratory.... It is observed that the extraction ratio reaches 97% after leaching for 200 min when chromite ore is mechanically activated for 10 min, but only 34% if not activated. Mechanical activation can decrease......
of leaching time on the removal efficiency of Tl 图3表明,常温下,Tl的迁移较为缓慢,随着浸出体系温度升高,Tl的活性增强,迁移速率加快,缩短了到达浸出平衡的时间.试验结果表明,矿样在酸性条件下加热浸出,只有一小部分Tl可迁移至酸性溶液中,Tl去除率不高于17.9%,可以认为,直接酸浸难以达到较好的脱Tl效果. 2.2 次氯酸钠氧化-酸浸脱Tl 浸出体系...度50℃,矿浆浓度20%的条件下,以及酸式浸出时,在浸出体系H2SO4用量12%,浸出矿浆浓度25%,浸出温度40 ℃的试验条件下,考查浸出体系搅拌速率和浸出时间对Tl去除率的影响,结果如图9所示. 图9 搅拌速率和浸出时间对Tl去除率的影响 Fig. 9 Effect of stirring speed and leaching time on removal......
......
Pressure leaching technique of smelter dust with high-copper and high-arsenic XU Zhi-feng(徐志峰), LI Qiang(李 强), NIE Hua-ping(聂华平) School of Materials and Chemical Engineering, Jiangxi... _____________________________________________________________________________________________________ Abstract: The application of pressure leaching technology in the treatment of high-copper and high-arsenic dust was studied. The pressure leaching technique was determined as follows......
