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that the accumulated bauxite has a feature of high Al2O3 whereas relative low Fe2O3 and SiO2 contents compared to the primary bauxite. The similar chondrite-normalized rare earth element (REE) patterns... in samples from Pingguo Bauxite, western Guangxi. The samples of PB have variably high total REE contents (106×10-6 to 692×10-6), and the chondrite- normalized REE patterns display right-dipping......
4.4 billion tons of bauxite residues are either stockpiled or landfilled, creating environmental risks either from the generation of dust or migration of filtrates. High alkalinity is the critical... residues [23–25]. In reality, the global re-use of bauxite residues is less than 10% due to their high pH (10–13) and leachate production (12–14) [26–31]. Therefore, alkaline regulation is the major......
ARTICLE J. Cent. South Univ. (2019) 26: 1426-1434 DOI: https://doi.org/10.1007/s11771-019-4098-3 Bio-derived N-doped porous carbon as sulfur hosts for high performance lithium sulfur batteries LIU... process of carbon-based sulfur hosts is usually complex and costly. Therefore, it is necessary to develop an efficient and cost-effective method to fabricate carbon hosts for high-performance sulfur......
processing and extracting activities [3, 4]. Over past decades, much attention has been paid to developing methods for eliminating the high alkalinity of bauxite residue [5, 6]. Reducing alkalinity of bauxite... could accelerate the dissolution of Na from bonding alkali in bauxite residue. Within FI column, the concentration of Na+ decreased from the extremely high value (5069 mg/kg) on the surface to the very......
of high sulfur-containing bauxite during storage, by simulating the environment of minerals storage in laboratory, the acidification mechanism and influencing factors of high sulfur-containing bauxite were... by moisture and air flow. Finally, more acid-producing substances are formed, resulting in the acidification of high sulfur-containing bauxite. The acidification of high sulfur-containing bauxite results......
:1672-7207(2010)03-0852-07 Desulfuration of high sulfur bauxite by oxidation roasting HU Xiao-lian, CHEN Wen-mi, XIE Qiao-ling (School of Metallurgical Science and Engineering, Central South University, Changsha 410083,China) Abstract: Using the two kinds of ore from Henan province, the oxidation roasting process of the desulfuration from the diasporic high sulfur bauxite was studied......
;into the electrolyte, and these S-containing ions did not affect the recycling utilization for electrolyte. Key words: high sulfur bauxite; electrolysis; desulfurization; electrolyte; recycling 1 Introduction... for SO2 emission due to the calcination. Pyrite, the main S-containing phase in high sulfur bauxite [3], is the same as the S-containing phase in coal. The process of electrolysis desulfurization relies......
Sulfur phase and sulfur removal in high sulfur-containing bauxite HU Xiao-lian1, 2, CHEN Wen-mi1, XIE Qiao-ling1 1. School of Metallurgical Science and Engineering, Central South University...: The sulfur phase in high sulfur-containing bauxite was studied by an X-ray diffraction analysis and a chemistry quantitative analysis. The methods for the removal of different shaped sulfur were also......
with relatively high abundance in sulfur energy substrate but not in ferrous sulfate energy substrate. Eighteen protein spots with relatively high abundance in sulfur substrate were excised in gel... Sulfur activation-related extracellular proteins of Acidithiobacillus ferrooxidans ZHANG Cheng-gui(张成桂), ZHANG Rui-yong(张瑞永), XIA Jin-lan(夏金兰), ZHANG Qian(张 倩), NIE Zhen-yuan(聂珍媛) Key......
阐明其脱硫机理,为推动我国高硫铝土矿资源的工业应用进程提供理论指导和实验支持. 1 实验 1.1 矿样性质 高硫铝土矿原矿来自重庆南川某一水硬铝石型高硫铝土矿.矿石主要化学成分见表1. 表1 高硫铝土矿的化学成分 Table 1 Chemical compositions of high-sulfur bauxite (mass fraction...的黄铁矿外,大部分黄铁矿呈不规则粒状,脉状或微细粒浸染状等嵌布在一水硬铝石,硅酸盐矿物和脉石矿物中(见图1),属难浮选高硫铝土矿. 表2 高硫铝土矿中各矿物中硫的物相组成 Table 2 Phase distributions of sulfur presented in high-sulfur bauxite (mass fraction, %) 图1 高......