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alfredii Hance, an herbaceous plant with great potential for heavy-metal phytoremediation both in tropical and in subtropical environments, which has been identified as a hyperaccumulator of zinc[14], to recover zinc. We selected ammonia-ammonium chloride solution as the leaching agent because this compound has been successfully used to recovery heavy metal from low grade ores for a long time......
Dechlorination of zinc dross by microwave roastingWEI Ya-qian(魏亚乾)1, 2, 3, PENG Jin-hui(彭金辉)1, 2, 3, ZHANG Li-bo(张利波)1, 2, 3, JU Shao-hua(巨少华)1, 2, 3, XIA Yi(夏仡)4, ZHENG Qin(郑勤)1, 2, 3, WANG Ya-jian..., Kunming 650093, China;4. Research Centre for Analysis and Measurement,Kunming University of Science and Technology, Kunming 650093, China)Abstract:Traditional treatments of zinc dross have many......
Enhanced visible-light photocatalytic activity of samarium-doped zinc oxide nanostructuresSukriti1,Prakash Chand1,Vishal Singh21. Department of Physics,National Institute of Technology2. Centre for Materials Science & Engineering,National Institute of Technology摘 要:In the present work,we have synthesized samarium doped zinc oxide nanostructures......
Enhanced visible-light photocatalytic activity of samarium-doped zinc oxide nanostructuresSukriti1,Prakash Chand1,Vishal Singh21. Department of Physics,National Institute of Technology2. Centre for Materials Science & Engineering,National Institute of Technology摘 要:In the present work,we have synthesized samarium doped zinc oxide nanostructures......
on this consideration, the zinc phosphating process has been widely used in the automobile industry as a pretreatment method on the metal surface[8-9]. There were some reports on the phosphating processes... Cathodic phosphate coating containing nano zinc particles on magnesium alloy NIU Li-yuan(牛丽媛) Zhejiang Industry and Trade Polytechnic, Advanced Material Research and Development......
主,为未反应的锌精矿,锌中浸渣几乎完全溶解. 图2 锌浸渣-锌精矿协同浸出结果 Fig. 2 Simultaneous leaching results of neutral-leach residue and zinc concentrate 图3 协同浸出渣的XRD谱 Fig.3 XRD pattern of simultaneous leaching residue 表2 协同浸出渣中锌物相分析 Table 2 Phase composition of zinc in simultaneous leaching residue 协同浸出过程中,浸出液中Fe3+,Fe2+浓度随时间的变化情况如图4所示.由图4可知,随着反应时间的延长,浸出液中Fe2+浓度逐渐升高,而溶液中Fe3+浓度则呈现先升高后降低的趋势......
, 刘若麟, 等. 硫酸铵焙烧法选择性分离锌浸出渣中的锌和铁[J]. 中国有色金属学报, 2021, 31(7): 1944-1951. DOI: 10.11817/j.ysxb.1004.0609.2021-39766 ZHANG Du-chao, REN Guan-xing, LIU Ruo-lin, et al. Selective separation of zinc and iron 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......
Metal Dusting-Mechanisms and Preventions () 摘要:Metal dusting attacks iron, low and high alloy steels and nickel-or cobalt-base alloys by disintegrating bulk metals and alloys into metal particles... mechanism is still not well understood. Current methods of protection against metal dusting are either directed to the process conditions-temperature and gas composition-or to the development of a dense......
Society, 1991, 138(2): 645-664. [12] MCBREEN J, GANNON E. The electrochemistry of metal oxide additives in pasted zinc electrodes [J]. Electrochimica Acta, 1981, 26(10): 1439-1446. [13] DODDAPANENI N... Heidelberg 2010 Abstract: A new additive of sodium hexametaphosphate (SHMP) was introduced to the paste of zinc electrode, with the purpose of preventing the zinc active materials from agglomerating......
STUDY ON NANOMETER ZINC PARTICLES FABRICATED BY GAS EVAPORATION METHOD Y.Fu1,A.A.A.Saleh1,Y.C.Zhai1,A.L.Zhang1,X.J.Zhai1 (1.School of Materials and Metallurgy, Northeastern University... is 0.4m3/h; amount of powder charged is 3g;distance from evaporation source is 10cm. It was found that the size of particles was governed by argon flow rate, evaporation temperature, amount of metal......
