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(with mass ratio of Al and Si lower than 5), this solid- liquid separation becomes more difficult due to the higher solid content of red mud in the Bayer liquor. In general, the bauxite ores contain...]. On digestion of this bauxite in the Bayer process, 50%-90% of the organic compounds may be extracted into the Bayer liquor as dissolved organic compounds. The dissolved organic compounds may......
. WHITTINGTON and CARDILE [25] and SALIMI et al [26] studied the phase diagrams and solubility of TCA in synthetic Bayer liquor respectively, and TCA was found to form more easily at low temperatures, caustic... of which can be over 90.33% and below 31%, respectively. References [1] KIM M J, LEE S O. Overview of the behaviour of sodium oxalate in Bayer liquor and its effect of the process [C]//Light Metals. San......
. [3] BARNES M C, MENSAH J A, GERSON A R. The kinetics of desilication of synthetic spent the Bayer liquor and sodalite crystal growth[J]. Colloids and Surfaces A, 1999, 147: 283-295. [4] BARNES M C, MENSAH J A, GERSON A R. The kinetics of synthetic spent Bayer liquor seeded with cancrinite and cancrinite/sodalite mixed-phase crystals[J]. Crystal Growth, 1999, 200: 251-264. [5] OSTAP S. Control......
, 等. 拜耳液中铁的行为研究[J]. 轻金属, 2008, 4: 14-18.CHEN Wen-mi, CHEN Xue-gang, GUO Jin-quan, et al. Research on the behavior of iron in bayer liquor[J]. Light Metals, 2008, 4: 14-18. [5] 何润德. 工业铝酸钠溶液氢氧化钡除硫[J]. 有色...): 278-289. [11] Malite J T, Roberson M L. Removal of high molecular weight organic compounds from bayer process caustic liquor: US Patent, 4663133[P]. 1987. [12] Rosenberg S P, Tichbon W. Organic......
and separation of red mud produced in treatment process of Guizhou diasporic bauxite with low and medium grade by lime Bayer process CHEN Bin, XIAO Li, TANG Xianmin (College of Metallurgical Engineering, Hunan University of Technology, Zhuzhou 412011, China) Abstract: The experimental investigation about settlement and separation performance of red mud generated from lime Bayer process using diasporic......
BAYER LIQUORS IN ALUMINA REFINERIES STUDIED BY FOURIER TRANSFORM INFRARED SPECTROSCOPY龚文琪摘 要:<正>Abstract:The assignments of the absorption peaks in the Fouriertransform infrared (FTIR)spectra of the Bayer liquors were established inthis study,which provided the basis for the study of Bayer liquors byFTIR techniques.The FTIR study of the Bayer......
of small particles in seeded precipitation system is an important factor to limit the depth of precipitation. Key words: Bayer liquor; Al(OH)3; interfacial property; solubility; critical nucleus size 1... to get the synthetic Bayer liquor for experiments. The concentration of sodium hydroxide as Na2O and the concentration of aluminum species as Al2O3 were determined by titration using a variation......
Electron probe microanalysis for revealing occurrence mode of scandium in Bayer red mudNa Zhang1,2,Hong-Xu Li1,2,Hui-Jing Cheng3,Xiao-Ming Liu1,21. School of Metallurgical and Ecological Engineering.... In this research, the occurrence mode of scandium in the Bayer red mud was investigated mainly by electron probe microanalysis(EPMA). The Bayer red mud used in this work is composed of 21.47 wt%hematite......
Recovery of alkali and alumina from Bayer red mud by the calcification–carbonation methodXiao-feng Zhu,Ting-an Zhang,Yan-xiu Wang,Guo-zhi Lü,Wei-guang ZhangKey Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of the Ministry of Education, School of Materials and Metallurgy, Northeastern University摘 要:Red mud produced in the Bayer......
liquor at different temperatures was investigated. The bauxite is comprised of gibbsite, aluminogoethite, hematite, kaolin, quartz, and minor boehmite. Lime increases the desilication efficiency... of Al2O3 entering the red mud, but the amount of aluminogoethite-to-hematite conversion promoted by lime leads to the increase of aluminogoethitic Al2O3 entering the digested liquor. The alumina......