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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......
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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......
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......
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......
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......
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of ammonium sulfate roasting-flooding 2 结果与讨论 2.1 硫酸铵焙烧过程热力学分析 硫酸铵加热时将会发生分解反应[18-19]: (1) (2) (3) 总反应如下...后的矿料用水在100 ℃对其浸出60 min,测定浸出液中Ni,Co,Mn和Fe的含量,考察硫酸铵用量对Ni,Co,Mn和Fe浸出率的影响,结果如图3所示. 图3 硫酸铵用量对浸出率的影响 Fig. 3 Influence of dosage of ammonium sulfate on leaching rate 由图3可知,硫酸铵用量较少时金属离子的浸出率都较低,当硫......