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高铁闪锌矿精矿高氧催化氧化氨浸工艺试验王书民1,2,樊雪梅2,张国春2,郑行望-1(1.陕西省西安市陕西师范大学化学与材料科学学院2.陕西省商洛市商洛学院化学与化学工程系)摘 要:采用L25(56)正交设计表,研究高铁闪锌矿精矿高氧催化氧化氨浸工艺的最佳工艺条件.结果表明,在25℃,氧分压为600kPa,液固比为7.0条件下,以碳铵-氨水-双氧水-催化剂体系氧化浸出高铁闪锌矿精矿8h,锌,铜,镉的浸出率分别可以达到93%,94%,91%,浸取液中不含铁.关键词:冶金技术; 铁闪锌矿; 催化氧化; ......
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......
and strong water absorption properties. The results of TCLP indicated that the amounts of Zn and Cd in the leaching solution exceed 40 and 90 times of limit, respectively, which demonstrate... ferrite. The ZLR possesses unstable thermodynamics properties. The water, sulfur trioxide and oxide volatiles escape from the ZLR when temperature is over 200, 700 and 1000 °C, respectively. 2) Leaching......
and specification are listed in Table 5. Fig.2 Scheme of column leaching test set 1-Upper trunk(filling water); 2-Upper trunk(filling sulfide ferrous solution); 3-Adjusting flux valve; 4-Ore sample; ...J. Cent. South Univ. Technol. (2007)06-0838-04 DOI: 10.1007/s11771-007-0159-0 Dynamic experiment and numerical simulation of solute transmission in heap leaching processing LIU Jin......
Experimental investigation of clam water impact on flatted-bottom seafloor mining toolHU Xiao-zhou(胡小舟)1, 2, LIU Shao-jun(刘少军)1, 2(1. School of Mechanical and Electrical Engineering, Central South..., China)Abstract:A test rig for constant velocity water entry experiments was developed that drives a flatted-bottom section attached on six degree of freedom(6-DOF) platform to enter the water vertically......
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and shrinkage. Hydraulic conductivity specimens were vacuum saturated in de-ionised water for 4 h. For leaching characterisation, specimens were assessed using the Dutch diffusion leach test, commonly... containing a leachant (de-ionised water with electrical conductivity of 61 μS/cm). The diffusion-leaching test was carried out for eight successive steps of specified length: 0.25, 1, 2.25, 4, 9, 16, 36......
Water coning mechanism in Tarim fractured sandstone gas reservoirsSHEN Wei-jun(沈伟军)1, 2, LIU Xiao-hua(刘晓华)3, LI Xi-zhe(李熙喆)3, LU Jia-liang(陆家亮)3(1. Institute of Porous Flow and Fluid Mechanics..., Langfang 065007, China)Abstract:The problem of water coning into the Tarim fractured sandstone gas reservoirs becomes one of the major concerns in terms of productivity, increased operating costs......
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