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for molybdenum and vanadium. Molybdenum was determined with ammonium thiocyanate colorimetry by spectrophotometer. Vanadium was titrated with ammonium ferrous sulfate. The static adsorption rate... Removal of vanadium from ammonium molybdate solution by ion exchange LI Qing-gang(李青刚)1, 2, ZHANG Qi-xiu(张启修)2, ZENG Li(曾 理)2, XIAO Lian-sheng(肖连生)1, 2, YANG Ya-nan(杨亚男)2 1. State Key Laboratory......
Recovery of valuable metals from a low-grade nickel ore using an ammonium sulfate roasting-leaching processXin-wei Liu 1),Ya-li Feng 1),Hao-ran Li 2),Zhi-chao Yang 1),and Zhen-lei Cai 1) 1) Civil... of Science,Beijing 100190,China摘 要:Metal leaching from a low-grade nickel ore was investigated using an ammonium sulfate roasting-water leaching......
Recovery of valuable metals from waste diamond cutters through ammonia–ammonium sulfate leachingPing Xue1,2,Guang-qiang Li1,Yong-xiang Yang1,3,Qin-wei Qin1,Ming-xing Wei21. Key Laboratory for Ferrous... with an ammonia–ammonium sulfate system and air as an oxidant. The effects of experimental parameters on the leaching process were investigated, and the potential–pH(E–pH) diagrams of Cu–NH3–SO42-–H2O and Zn–NH3......
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......
Influence of ammonium sulfate on YAG nanopowders and Yb:YAG ceramics synthesized by a novel homogeneous co-precipitation methodJinsheng Li1,2,Zhifa Liu2,Lei Wu2,Xiumei Han2,Xiwei Qi2,Xudong Sun11... of yttrium nitrate,aluminum nitrate and a small amount of ammonium sulfate using hot urea as the precipitant.The method has the superiorities that co-precipitation of cations is ensured and continuous......
Influence of ammonium sulfate on YAG nanopowders and Yb:YAG ceramics synthesized by a novel homogeneous co-precipitation methodJinsheng Li1,2,Zhifa Liu2,Lei Wu2,Xiumei Han2,Xiwei Qi2,Xudong Sun11... of yttrium nitrate,aluminum nitrate and a small amount of ammonium sulfate using hot urea as the precipitant.The method has the superiorities that co-precipitation of cations is ensured and continuous......
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Thermodynamics and kinetics of extracting zinc from zinc oxide ore by the ammonium sulfate roasting methodYi Sun,Xiao-yi Shen,Yu-chun ZhaiSchool of Materials and Metallurgy, Northeastern University摘 要:Thermodynamic analyses and kinetic studies were performed on zinc oxide ore treatment by(NH4)2SO4 roasting technology. The results show......
from zinc leaching residue by ammonium sulfate roasting[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(7): 1944-1951. DOI: 10.11817/j.ysxb.1004.0609.2021-39766 目前,世界上80%以上的锌是通过"焙烧-浸出-净化-电积"工艺生产的...酸铁和硫酸锌.同时,焙烧过程中所产生的硫酸铁也会分解生成Fe2O3和SO3,但是由于分解速率小于其生成速率,最后导致了铁的浸出率增加. 图2 硫酸铵与锌浸出渣质量比对锌铁浸出率的影响 Fig. 2 Effect of mass ration of ammonium sulfate and zinc leaching residue on extraction rate......
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