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of residue are Bi2O3 and Fe2O3. Therefore, the method of pressure leaching in alkaline solution is provided as an effective separation of molybdenum, tungsten and sulfur from bismuth and a beneficial...Pressure leaching of bismuth sulfide concentrate containing molybdenum and tungsten in alkaline solutionZHANG Du-chao(张杜超), YANG Tian-zu(杨天足), LIU Wei-feng(刘伟锋), WU Jiang-hua(吴江华)(School......
method must rely on the lead phase in the leach residue[3-5]. According to the properties of the selective chlorination leaching process, the form of silver in the solution and lead phase in the leach... Compositions of leaching solution and residue Table 2 shows that the base metals such as copper, nickle and antimony can be removed effectively in the leaching procedure. The leaching rates of copper......
on the kinetics of the electrochemical process [8]. Therefore, impurities, different mineral phases and different ions in the solution are important factors in the leaching process. Moreover, in an oxygen pressure leaching system, the Fe ions and other electron transfer media act as catalysts, which precipitate into the solution under the influence of an acid. The chemical reactions between the ore particles......
the purified process of leaching solution[5], but also precipitate the element sulfur. WANG and FANG[6] presented the technology to the simultaneous leaching of chalcopyrite concentrate with MnO2[6... of leaching rate; k0 is the pre- exponential factor; Ea is the activation energy; R is the universal gas constant; and t is temperature in K. For inoculating and sterile solution, plotting lg kB vs 1/T......
containing malachite and chrysocolla in ammonium sulfate solution. It was found that the leaching rate was controlled by the surface reaction; and the activation energy was calculated to be 48.5 kJ... and FERRON[7] studied the leaching kinetics of malachite in ammonium carbonate solution. The whole dissolution procession was divided into two stages. At the first stage, the initial dissolution......
GC) obviously increased in the simulated solution of acidic red soil. The electric field formed by the Cu–Fe GC changes the direction of ion migration between the copper and drawn steel electrodes...Galvanic Corrosion Behavior of Copper–Drawn Steel for Grounding Grids in the Acidic Red Soil Simulated SolutionXiao-Lei Fan1,Yun-Xiang Chen2,Jun-Xi Zhang1,De-Yuan Lin2,Xuan-Xuan Liu1,Xiao-Jian Xia21......
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-induced corrosion behaviors of conventional low-carbon(LC) steel and low-alloy(LA) steel in simulated concrete pore solution. The results show that mill scale exerts different influences on the corrosion...Influence of mill scale and rust layer on the corrosion resistance of low-alloy steel in simulated concrete pore solutionJin-jie Shi,Jing MingJiangsu Key Laboratory of Construction Materials, School......
:Hydrogen was a key factor resulting in stress corrosion cracking (SCC) of X80 pipeline steel in Ku’erle soil simulated solution. In this article, the effect...Effect of hydrogen on the stress corrosion cracking behavior of X80 pipeline steel in Ku’erle soil simulated solutionPing Liang1,2), Cui-wei Du1), Xiao-gang Li1), Xu Chen1), and Zhang liang1) 1......
