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of the leaching solution was relatively increased. The chemical formulae related to acid production and acid consumption in the leaching of pyrite are [28]: 4Fe2++O2+4H+→4Fe3++2H2O 2S0+2H2O+3O2→2SO42......
leaching agent is injected into the clay ore, thus triggering chemical replacement reaction between ammonium ions in the leaching solution and rare earth ions adsorbed on the clay. Rare earth leachate......
J. Cent. South Univ. (2020) 27: 1814-1827 DOI: https://doi.org/10.1007/s11771-020-4410-2 Discovery and identification of clay-sized tuffaceous rocks in Chang 7 Member of Upper Triassic Yanchang Formation in Ordos Basin, China ZHENG Qing-hua(郑庆华)1, LIU Xing-jun(刘行军)2, LIU Yi-qun(柳益群)3, ZHOU Ding-wu(周鼎武)4, YOU Ji-yuan(尤继元)1, YANG Kai-yan(杨开艳)5 1. School of Chemistry & Chemical Engineering......
for controlling slopping in copper converters by using lateral and bottom gas injection[J]. International Journal of Chemical Reactor Engineering, 2009, 7(1): 91-97. [6] 张振扬, 陈 卓, 闫红杰, 刘方侃, 刘 柳, 崔志祥, 申殿邦. 富氧底吹熔炼......
to produce FGM, namely powder metallurgy (PM) technique [6], centrifugal casting process [7], physical/chemical vapor deposition processes (PVD/CVD) [8], solid free-form fabrication (SFF) process [9... profile, with top and bottom ended diameters 6 and 8 mm, respectively. Table 1 Chemical composition of 6082-T6 aluminum alloy (wt.%) The FSP was performed on the FSW machine (NCFSW-3T) with an automated......
in particular metals and alloys because of the complex effects from chemical compositions, texture, dislocation characters, annealing treatments and testing methods [19,21,42]. For instance, DAYMOND......
at NES. The NES points were calculated using the thermodynamic software JMatPro7.0 (Sente software Ltd., Guild, U.K.) based on the Scheil model and CALPHAD method. Table 1 Actual chemical composition......
characteristic profiles while the similar chemical compositions are used. In the interest of authors, ball milling combined with powder metallurgy is an effective method for homogeneous dispersion of a wide......
. Measurement of the effects of physical and chemical variables on bubble size [J]. International Journal of Mineral Processing, 1990, 28(1, 2): 139-149. DOI: 10.1016/0301- 7516(90)90032-T. [11] LI Jian-qi......
Coal Exploitation and Comprehensive Utilization, China Pingmei Shenma Energy & Chemical Industry Group Co. Ltd., Pingdingshan 467000, China; 4. Department of Civil Engineering and Lassonde......