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characteristics of contaminated soil are presented in Table 1. The soil was highly contaminated by kinds of heavy metals, and the national standard is largely outnumbered by the concentration of heavy...J. Cent. South Univ. (2012) 19: 1973-1979 DOI: 10.1007/s11771-012-1234-8 Preliminary bioleaching of heavy metals from contaminated soil employing indigenous Penicillium Chrysogenum strain F1 DENG Xin......
the beneficiation cost. Moreover, large amount of gold, silver, and other associated precious metals are present in the zinc leaching residues. However, a high pH inhibits the flotation of gold and silver...Trans. Nonferrous Met. Soc. China 31(2021) 2128-2138 Influence of high concentration Zn2+ on floatability of sphalerite in acidic system Ting-sheng QIU1, Guo-dong LI1,2, Xiao-bo LI1, Hua-shan YAN1......
; Abstract: Concentration of heavy metals in blood and urine of rabbit after... and accuracy, relative standard deviation (n=6) was between 2.9% and 5.9%, and the recovery was in the range of 95.0%-104.2%. Concentration of six heavy metals increases in some extent in blood and urine after......
on these metals extraction. Both pulp density and NaCl concentration significantly affect Pb extraction. Based on the orthogonal array experiments, the optimum conditions for the extraction of Cu, In, Pb... system, four parameters, including the concentration of NaCl, H2SO4 concentration, temperature and pulp density, were investigated for the recovery of metals from the hydrometallurgical residue......
微波技术在稀贵金属冶金中的研究应用进展 张泽彪1,彭金辉1,张利波1,刘能生1 (1.昆明理工大学,冶金与能源工程学院,非常规冶金省部共建教育部重点实验室,云南,昆明,650093) 摘要:在简要阐述微波加热原理的基础上,主要介绍了微波技术在稀贵金属金,钛冶金中的研究及应用,以及微波冶金设备进步情况.讨论了目前存在的一些问题,并展望了微波技术在稀贵金属冶金领域的应用前景. 关键词:冶金技术; 微波; 稀贵金属; 微波冶金设备; metallurgical technology; microwave; rare and precious metals; microwave metallurgy equipment; [全文内容正在添加中] ......
Leaching vanadium by high concentration sulfuric acid from stone coal CHEN Xiang-yang(陈向阳)1, 2, LAN Xin-zhe(兰新哲)1, 2, ZHANG Qiu-li(张秋利)1, MA Hong-zhou(马红周)1, ZHOU Jun(周 军)1 1. School... from stone coals by high concentration sulfuric acid was researched. The effect of the concentration of sulfuric acid, leaching temperature, leaching time and helper leaching agent on the extraction......
J. Cent. South Univ. (2012) 19: 2634-2642 DOI: 10.1007/s11771-012-1321-x Assessment of heavy metals in sediment cores from Xiangjiang River, Chang-Zhu-Tan region, Hunan Province, China LONG Yong-zhen(龙永珍)1, DAI Tai-gen(戴塔根)1, CHI Guo-xiang(池国祥)2, YANG Liu(杨柳)1 1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals of Ministry of Education (Central South University), Changsha......
on the long-run relationship between gold and silver of Tokyo Commodity Exchange, CINER [4] found that the stable long-run relationship between the two precious metals broke down suddenly in the 1990s. He... resources exhibit co-movement at high frequencies. SARIA et al [7] examined the co-movements and information transmission among the spot prices of four precious metals (gold, silver, platinum......
Numerical simulation of effects of cusp magnetic field on oxygen concentration of 300 mm CZ-SiWANG Yongtao a, b , XU Wenting a, b , DAI Xiaolin a , XIAO Qinghua a , DENG Shujun a , YAN Zhirui a , and ZHOU Qigang a, b a Semiconductor Materials Co., Ltd, General Reseach Institute of Nonferrous Metals, Beijing 100088, China b General Research Institute for Non Ferrous Metals, Beijing 100088, China摘......
J. Cent. South Univ. (2021) 28: 699-711 DOI: https://doi.org/10.1007/s11771-021-4639-4 Relationship between hydrogen concentration and mechanical properties of 5Ni-16Cr-Mo steel SUN Yong-wei(孙永伟)1... University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract: The qualitative relationship between hydrogen concentration and notch tensile strength has been investigated......