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of Na+ is improved and the chromium transformation is promoted, and the conversion rate of trivalent chromium increases at the late stages of roasting process. Key words: chromium residue; roasting... of chromium residue obtained by roasting chromite with Na2CO3 为进一步确定铬渣中的相和成分,对铬渣颗粒进行背散射扫描电镜和能谱(SEM/EDS)分析,图2所示为整体铬渣和单颗粒的形貌.由图2可知,铬渣颗粒外形似烧结体,形貌不规则,物相界面不明显(见图2(a)).图2(b)所示为单颗粒铬渣的断面图,图中显示铬渣断面是由亮色相和暗灰色相组成,两相混合且相互包......
ARTICLE J. Cent. South Univ. (2019) 26: 410-421 DOI: https://doi.org/10.1007/s11771-019-4013-y Dynamic change and diagnosis of physical, chemical and biological properties in bauxite residue...: Vegetation encroachment occurred in bauxite residue disposal area (BRDA) following natural weathering processes, whilst the typical indicators of soil formation are still uncertain. Residue samples were......
residue revegetation HAYNES Richard1, ZHOU Ya-feng(周亚凤)2 1. School of Agriculture and Food Sciences, University of Queensland, St Lucia, QLD 4072, Australia; 2. School of Medical Engineering, Foshan... environmental conditions and the addition of balanced fertilizer applications. Key words: bauxite residue; bauxite residue disposal area; substrate amendment; natural ripening; soil formation in bauxite......
ARTICLE J. Cent. South Univ. (2019) 26: 393-403 DOI: https://doi.org/10.1007/s11771-019-4011-0 Effect of substrate amendment on alkaline minerals and aggregate stability in bauxite residue TIAN Tao... Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Bauxite residue is an alkaline waste material in the process of alumina production due to its......
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SPHERICAL MICROSTRUCTURE FORMATION OF THE SEMI-SOLID HIGH CHROMIUM CAST IRON Cr20Mo2 W.M.Mao1,X.Y.Zhong1,A.M.Zhao1 (1.University of Science & Technology Beijing, Beijing 100083, China) Abstract:The nondendritic semi-solid slurry preparation of high chromium cast iron Cr20Mo2 has been studied in this paper. The experiments show that the proeutectic austenitic particles are more spherical under......
Zuo-hu, WANG Zhi-kuan. A novel green process of zero emission of chromium-containing residue [J]. Engineering Chemistry & Metallurgy, 1999, 20(1): 92-97. [7] 官月平, 刘会洲, 安振涛, 柯家骏. 高梯度磁分离铬盐浸出浆液中的铬渣...；CH-1菌 中图分类号:X70 文献标识码:A Selective recovery of chromium from chromium-containing slag by Achromobacter sp. CH-1 CHAI Li-yuan, WANG Yun-yan, WANG Qing-wei (School of Metallurgical Science......
Deposition of chromium aluminum nitride coatings by arc ion plating ZHANG Shu-juan(张淑娟)1, LI Ming-sheng (李明升)1, FENG Chang-jie(冯长杰)2, LIU Ting-zhi(刘庭芝) 1, DUO Shu-wang(多树旺) 1 1. Jiangxi Key... surface is more obvious, and the change of preferred orientation and the shift of XRD peak take place. Key words: chromium aluminum nitride; arc ion plating; phase change; pulse bias 1 Introduction......
J. Cent. South Univ. Technol. (2010) 17: 1155-1162 DOI: 10.1007/s11771-010-0612-3 Microstructures and wear resistance of chromium coatings on P110 steel fabricated by pack cementation LIN Nai...-performance surface on P110 steel that can meet the requirements in oil/gas field environment, the chromium coatings were fabricated by pack cementation. The chromium coatings differed in with/without......
