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Microwave assisted atmospheric acid leaching of nickel from laterite oreCHE Xiaokuia,b,SU Xiuzhuc,CHI Ru’anc,and YU Junxiac a College of Resources and Civil Engineering,Northeastern University... was higher than that obtained by conventional water bath heating.Kinetic experiments showed that the leaching of nickel in a sulphuric acid medium was controlled by chemical reaction occurring......
by terminating electrochemical experiments for various durations. The influence of carbon on the final products was considered. NbC particles were obtained by leaching the composite with acid. The results... reduction; molten chloride; calcium niobates; acid leaching 1 Introduction Niobium carbide (NbC) is a non-oxide ceramic material primarily used as the starting material for the commercial production......
Extraction of vanadium from high calcium vanadium slag using direct roasting and soda leachingXin-sheng Li and Bing Xie College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China摘 要:The extraction of vanadium from high calcium vanadium slag was attempted by direct roasting and soda leaching. The oxidation process......
Process mineralogy characteristics of acid leaching residue produced in low-temperature roasting-acid leaching pretreatment process of refractory gold concentratesShuang-hua Zhang1,Ya-jie Zheng1,Pan... refractory gold concentrates, process mineralogy on the acid leaching residue of gold calcine was studied by chemical composition, X-ray diffraction, scanning electron microscopy-energy spectrum, and mineral......
Primary beneficiation of tantalite using magnetic separation and acid leachingM.Nete1,F.Koko1,T.Theron1,W.Purcell11. Department of Chemistry, University of the Free State摘 要:leaching removed a large portion of thorium and uranium in these samples. Analytical results......
Dissolution behavior of Caldag lateritic nickel ore subjected to a sequential organic acid leaching methodSait Kursunoglu,Muammer KayaDepartment of Mining Engineering, Eskisehir Osmangazi University摘 要:The dissolution behavior of Caldag lateritic nickel ore subjected to a sequential organic acid leaching method was investigated. The effects of the type......
100088, China)Abstract:The application of microwave irradiation for pretreatment of copper anode slime with high nickel content prior to pressure sulfuric acid leaching has been proposed. The microwave...Intensification of pretreatment and pressure leaching of copper anode slime by microwave radiationYANG Hong-ying(杨洪英)1, MA Zhi-yuan(马致远)1, 2, HUANG Song-tao(黄松涛)2, LV Yang(吕阳)1, XIONG Liu(熊柳)1(1......
mL of sulfuric acid solutions (pH=1.6) were added into 250 mL flasks, and specific metal ions (Cu2+, Fe2+, and Fe3+) concentrations were also added into solution (Table 1). The leaching experiments..., the leaching residuals were washed with sulfuric acid solutions of pH 1.6 and dried in a vacuum box at 50 °C. The solid samples were examined by Raman spectroscopy with 633 nm He-Ne laser (Horiba Jobin......
for extracting copper from low grade copper oxide is applied widely[1]. Direct leaching technology of oxide ore and unmanageable ore attracts much attention, which plays an important role in the sustainable development of copper industry. Sulfuric acid (H2SO4) and ammonia (NH3?H2O) are usually used as the leaching reagents in the process of leaching copper ore, such as chalcopyrite (CuFeS2), black......
; Abstract: The kinetics of pressure leaching high iron sphalerite concentrate was studied. The effects of agitation rate, temperature, oxygen partial pressure, initial acid concentration, particle size... in the initial sulfuric acid concentration; and Zn leaching rate increases with a rise of iron content in the concentrate and Fe2+ concentration in the solution. Moreover, the experiment demonstrates......
