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the negative effects of copper and pyrite on cyanidation and increase the gold recovery rate, the investigation on bio-heap leaching pretreatment was made, by which Cu would be dissolved and gold would... by cyaniding increased to 80.35%. The bio-heap leaching pretreatment can therefore effectively dissolve Cu and liberate gold from pyrite and lead to the increase of gold extraction.关键词:......
for preparing pure manganese sulfate from low-grade ores with a granule mean size of 0.47 mm by direct acid leaching was developed. The effects of the types of leaching agents, sulfuric acid concentration, reaction temperature, and agitation rate on the leaching efficiency of manganese were investigated. We observed that sulfuric acid used as a leaching agent provides a similar leaching efficiency......
of Development and Comprehensive Utilization of Mineral Resources摘 要:The study of the leaching of vanadium(V) and molybdenum(Mo) from spent petrochemical catalysts in sodium hydroxide(NaO H) medium was performed using two approaches, namely, conventional leaching and microwave-assisted leaching methods. The influence of microwave power, leaching time......
J. Leaching behavior of sulphides in ammoniacal thiosulfate systems [J]. Hydrometallurgy, 2002, 63: 189–200. [18] TKACOVA K, BALAZ P. Reactivity of mechanically activated chalcopyrite [J... and Springer-Verlag GmbH Germany,part of Springer Nature 2018 Abstract: The addition of NaCl in the ammonium persulfate-APS (as an oxidant) leaching was investigated. APS has some advantages compared......
Trans. Nonferrous Met. Soc. China 25(2015) 1334-1340 Secondary reaction mechanism of leaching process of calcium aluminate slag Hui-lan SUN1,2, Bo WANG1,2, Jian-xin ZHANG1, Shu-feng ZONG1, Jia-jia... stable than β-2CaO·SiO2. However, it is decomposed by sodium carbonate solution during leaching process, leading to the secondary reaction. The extent of secondary reaction and reaction mechanism......
Effects of mechanical activation on the kinetics of terbium leaching from waste phosphors using hydrochloric acid谭全银1,李金惠11. State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University摘 要:The effect of mechanical activation(MA) on the kinetics of terbium(Tb) leaching from waste phosphors using......
Effects of mechanical activation on the kinetics of terbium leaching from waste phosphors using hydrochloric acid谭全银1,李金惠11. State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University摘 要:The effect of mechanical activation(MA) on the kinetics of terbium(Tb) leaching from waste phosphors using......
Column leaching of lanthanides from Abu Tartur phosphate ore with kinetic studyA.T. Kandil1,A.M. Kamel11. Chemistry Department, Faculty of Science, Helwan University摘 要:The dynamic leaching of lanthanides from a west desert phosphate ore, Egypt (Abu Tartur) by hydrochloric acid, nitric acid and sulfuric acid solutions was investigated in this study......
Column leaching of lanthanides from Abu Tartur phosphate ore with kinetic studyA.T. Kandil1,A.M. Kamel11. Chemistry Department, Faculty of Science, Helwan University摘 要:The dynamic leaching of lanthanides from a west desert phosphate ore, Egypt (Abu Tartur) by hydrochloric acid, nitric acid and sulfuric acid solutions was investigated in this study......
Leaching kinetics of ionic rare-earth in ammonia-nitrogen wastewater system added with impurity inhibitors邱廷省1,朱冬梅2,方夕辉1,曾清华1,3,高广阔1,朱华磊11. Faculty of Resource and Environmental Engineering, Jiangxi...+, Fe3+, Ca2+, Cl–, and Si O32–) with a p H of 5.4–5.6.Its direct discharge will pollute, yet it can be recycled and used as a leaching reagent for ionic rare-earth ores.In this study, leaching......