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were sieved by standard sieves, the average particle sizes of which are 2.00 mm, 0.75 mm and 0.20 mm (named Sample 1, Sample 2 and Sample 3). All these three samples are raw bauxite and the chemical and mineral compositions are the same. The main chemical compositions of the raw bauxite are given in Table 1. The XRD pattern of the bauxite is shown in Fig. 1, and the mineral components of bauxite......
:TF803.21 文献标志码:A Settling performance of red mud generated from Pre-roasted high-iron diasporic bauxite ZHANG Xu-hua, ZHANG Ting..., Northeastern University, Northeastern University, Shenyang 110819, China) Abstract: The diasporic bauxite with high-iron content was pre-roasted in muffle furnace and strong magnetic field, respectively......
; 1 Introduction Bauxite resources in China are abundant. However, most bauxite is diasporic bauxite with the typical character of high content of aluminum oxide and silica and the mass ratio of A12O3 to SiO2 of more than 80% bauxite is 4-6[1]. Main gangue minerals in diasporic bauxite are aluminosilicate minerals such as kaolinite, illite and pyrophyllite[2]. In China......
and the original soil and regolith were converted from carbonates by chemical weathering, thereby providing abundant materials for bauxite formation [12]. Alternatively, it has been proposed... a great impact on the evolution of bauxite minerals [1]. As a variable valence rare earth element, Ce is sensitive to changes in chemical environment [32, 33]. The occurrence of positive Ce anomalies......
3 ......
restoration [10, 11]. Thus, it is curial issue that revegetation is deemed to the extremely important effective measure way to bauxite residue disposal areas, and physico-chemical evaluation can be used for the major indicator of rehabilitation success. Recently, some approaches have been demonstrated to improve physical and chemical properties of bauxite residue such as soil capping, halophytes......
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Semi-industrial experimental study on bauxite separation using a cell?column integration processNing-ning Zhang1,2,Chang-chun Zhou1,2,Long-fei Cong1,2,Wen-long Cao1,2,You Zhou1,21. School of Chemical Engineering and Technology, China University of Mining & Technology2. Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education)摘 要: in diasporic bauxite in China, was chosen as the starting material in this research work.
2 Experimental
2.1 Materials
TiO2 powder was a chemical reagent in the phase of anatase; NaOH and Na2CO3 were... that the apparent activation energy of de-titanization in diasporic bauxite digestion slurry is 84.4 kJ/mol in the temperature range of 180-260 ℃, and surface chemical reaction is the controlling......Reaction behavior and mechanism of anatase in digestion process ofdiasporic bauxite
来源: 《中国有色金属学报(英文版)2010年第1期》——李小斌 付伟岸 周秋生 刘桂华 彭志宏
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