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Reduction roasting–magnetic separation of vanadium tailings in presence of sodium sulfate and its mechanismsYu-Lei Sui1,Yu-Feng Guo1,Andrew Yakovlevich Travyanov2,Tao Jiang1,Feng Chen1,Guan-Zhou... id="ChDivSummary" name="ChDivSummary">Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2......
in the roasted residue was not also put forward. Based on the volatility of Sb2O3, two stage roasting processes including oxidation and reduction for treating the antimony-bearing dust are put forward... 99.00 wt%. N2 (purity of 99.3%), CO (purity of 99.9%) and CO2 (purity of 99.9%) were procured from local suppliers. 2.2 Roasting experiments In this work, two stage roasting processes including......
Trans. Nonferrous Met. Soc. China 31(2021) 576-585 Novel high strength Al-10.5Si-3.4Cu-0.2Mg alloy produced through two-stage solution heat treatment Mohsen ABDI, Saeed G. SHABESTARI School... to Al-10.5Si-3.4Cu alloy. The new alloys were subjected to two types of precipitation hardening processes different in the solutionizing stage. The results showed that the presence of various amounts......
of two-stage compression dual-temperature air conditioning system YU Lei, REN Chengqin, YANG Yang, WAN Yangda, WANG Zhao (College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China) Abstract: Aiming at the problems caused by the heat and moisture coupling processing of traditional air conditioning systems, an innovative two-stage dual-temperature air conditioning system......
溶在获得较高的合金元素过饱和度的同时, 仅发生较少的再结晶, 从而在随后的时效过程中产生更高的析出强化效应. 关键词: 7A55铝合金; 再结晶; 回复; 双级固溶; 力学性能 中图分类号: TG146 文献标识码: A Effects of two-stage solution on microstructures and mechanical properties of 7A55...) Abstract: The effects of temperature and time of two-stage solution on mechanical properties of 7A55 aluminium alloy sheet were investigated by optical microscopy, TEM and SEM analyses and tensile......
Deselenization and detellurization of precious-metal ore concentrates by swelling oxidizing roasting and successive alkaline leachingFu-yuan Zhang1,2,3,Ya-jie Zheng1,Guo-min Peng2,31. School of Metallurgy and Environment,Central South University摘 要:A new technique of swelling oxidizing roasting and alkaline leaching was proposed for deselenization......
by the steel bar fulcrum and concrete fixed top. The principles and construction techniques involved in the FGT embankment are described firstly. Then, the numerical analysis method and two-stage analysis... ground.Key words:geosynthetic-reinforced and pile-supported embankment; fixed geosynthetic technique; numerical analysis; two-stage analysis method; soft soil......
Extraction of niobium, yttrium, and cerium from a low-grade niobium-bearing ore by roasting(NH4)2SO4-Na2SO4-H2SO4 systemWen-Cheng Gao,Jian-Kang Wen,Biao Wu,He ShangNational Engineering Laboratory...-bearing ore by the roasting(NH4)2SO4-Na2SO4-H2SO4 system was experimentally studied. The influences of various factors,such as roasting temperature, roasting time, mass ratio of agents-to-ore......
by a step solid-phase in an argon with LiOH·H2O as lithium source and Mn2O3 (roasting EMD at 680 ℃ for 6 h) as manganese source. The mixture of Mn2O3 and LiOH·H2O was analyzed by thermogravimetric... temperature of LiMnO2 should be controlled at above 500 ℃. The optimum condition for preparing LiMnO2 is as follows: mole ratio of lithium to manganese 1.03, roasting temperature 600 ℃, roasting time......
Thermodynamics and kinetics of alumina extraction from fly ash using an ammonium hydrogen sulfate roasting methodRuo-chao Wang,Yu-chun Zhai,Zhi-qiang NingSchool of Materials and Metallurgy, Northeastern University摘 要:A novel method was developed for extracting alumina(Al2O3)from fly ash using an ammonium hydrogen sulfate(NH4HSO4)roasting process......
