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Computer modeling of high-pressure leaching process of nickel laterite by design of experiments and neural networksSrecko Stopic2,Bernd Friedrich2,Boban Stojanovic32. IME Process Metallurgy and Metal... on the D optimality criterion. In the high-pressure sulfuric acid leaching (HPSAL) process for nickel laterite in "Rudjinci" ore in Serbia, the temperature, the sulfuric acid to ore ratio, the stirring......
transformation of Si-containing and Ti-containing minerals during high-pressure leaching process for bauxites [J]. Nonferrous Metals: Extractive Metallurgy, 1991(5): 25-29. (in Chinese) [17] CHEN Li, LI Man. Phase transformation of Si-containing and Ti-containing minerals during high-pressure leaching process for bauxite from Guizhou [J]. Light Metals, 1991(6): 18-22. (in Chinese) [18] CHEN Li, LI Yong......
3 Experimental equipments Table 4 Related technical parameters of WHFS-2T high pressure reactor 3 Results and discussion 3.1 Leaching mechanism In this leaching system, ZnS and sulfate inter...), stirring speed (480 r/min) and additive amount (1%). Fig.3 shows that the higher pressure made the higher leaching rate of zinc and conversion of sulfur, but in the range of high oxygen partial......
progress of the reaction during the oxygen pressure leaching process [3, 4]. Thus, there are a lot of issues in the pressure leaching process of sphalerite such as high demand for equipment and large... and the physical chart of the FCFD 2-1.0 potential high-pressure autoclave are shown in Figures 2 and 3, respectively. 2.3 Leaching experiment procedure The flowchart representing the process......
atmospheric leaching, and no need for high-pressure operation as high pressure acid leaching (HPAL). The ferric iron in leaching solution could be effectively removed by sodium jarosite process with a little... ____________________________________________________________________________________________ 1 Introduction For a hydrometallurgical process of nickel laterites, conventionally, high pressure acid leaching (HPAL) process has been the preferred route due to precipitation......
Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: Based on the working principles of particle bed comminution, particles produced by high-pressure grinding rolls (HPGR) have... patterns, which is the main cause of the flotation performance variation. Key words: calcite; surface property; grinding patterns; high-pressure grinding rolls; flotation performance Cite this article......
. The results indicate that 99.6% zinc is obtained after leaching for 3h at 85℃ and pressure of 0.1MPa O2, with 20g sphalerite concentrate in 200mL leaching solution containing 2.0mol/L H2SO4... because of its high solubility for sulfur and its stability in the leaching pulp thus facilitating recycling as shown in reaction (6). The operational schematics of the coupled process is shown in Fig.1.......
, China: Evidence from high-pressure veins ZHANG Jin-fu(张进富)1, HUANG De-zhi(黄德志)1, HUANG Shi-qi(黄始琪)1, LI Guo-ming(李国明)1, GAO Jun(高 俊)2, SHI Yong-hong(石永红)3 (1. School of Geosciences and Environmental...: High-pressure(HP) veins were extensively developed in western Tianshan high-pressure(HP) metamorphic belt. The HP vein and host-rocks were analyzed by electronic microprobe to trace the origin......
High-pressure sintering and magnetic properties of Fe86Zr11-xNbxB3(x=5.5, 6) amorphous alloys LU Bin(卢 斌)1, YI Dan-qing(易丹青)1, YAN Biao(严 彪)2, YIN Jun-lin(殷俊林)2, LIU Yan(刘 岩)3, LIU...=5.5, 6) melt-spun strip powders and the influence of high-pressure sintering conditions on phase component and grain size of bulk alloys were investigated by X-ray diffractometry(XRD), differential......
Compressive behavior of NiAl/(Cr,Mo)Hf alloy prepared by high-pressure die casting and hot isostatic pressing DU Xing-hao(杜兴蒿)1, GUO Jian-ting(郭建亭)2 , WU Bao-lin(武保林)1 1. Department of Materials... Received 28 July 2006; accepted 15 September 2006 Abstract: The NiAl-28Cr-5.85Mo-0.15Hf alloy was prepared by high-pressure die casting (HPDC) and subsequent hot isostatic pressing(HIP), and tested......
