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→sodalite. Key words: Bayer process; desilication; sodium aluminate solution; zeolite; sodalite 1 Introduction The bauxite ores for the alumina extraction mainly comprise Al-, Si-, Fe-, Ti-containing minerals as well as lots of trace element minerals [1]. Among all the impurity minerals, the Si-containing minerals are considered to be the most harmful during the Bayer digestion process, in which......
than others. Key words: new flocculants; Bayer process; Chinese diaspore bauxite; red mud settlement  ...): 37-40.GONG Bin, SONG Lian-peng, LI Tao. Prepara tion of a new flocculant and its influence on settling behavior of red mud in bayer process[J]. Conservation and Utilization of Mineral Resources, 2007(2......
. The oxalate causticization efficiency and the alumina loss rate can be over 90% and below 31% respectively when reacted at 50 °C with a stirring rate of 200 r/min. Key words: Bayer process; lime causticization; oxalate; kinetics; sodium aluminate solution 1 Introduction Sodium oxalate in industrial sodium aluminate solution is mainly decomposed from the organics in the Bayer process, which originally......
diasporic bauxite with low and medium grades by lime Bayer process CHEN Bin, XIAO Li, TANG Xianmin (College of Metallurgical Engineering, Hunan University of Technology, Zhuzhou 412011, China) Abstract: The digestion experiments of lime Bayer process using diasporic bauxite from Guizhou Province with low and medium grades (alumina-silica ratio is 5.48) were completed. The influences of lime amount......
of silica in the Bayer process used for alumina production[J]. Canadian Metallurgical Quarterly, 1985, 25: 101-106. [6] 张亦飞, 郑诗礼, 张 懿. 铝酸钠溶液中过饱和氧化硅的稳定性[J]. 化工学报, 2004, 55(5): 695-698. ZHANG Yi-fei, ZHENG...]. The Chinese Journal of Nonferrous Metals, 2003, 13(1): 271-275. [12] GERSON A R, ZHENG Ka-li. Bayer process plant scale: transformation of sodalite to cancrinite[J]. Crystal Growth, 1997, 171: 209-218......
pressure reaches 1.0 MPa, more than 98% of S2- is oxidized to SO42-. Key words: wet oxygen oxidation; Bayer process; sodium aluminate solution; desulfurization 由于硫在拜耳法生产中的铝工矿中造成Na2O的质量损失,而且溶液中的硫层使钢材受到.... Study on variation rule of iron in the aluminate solution after digestion process at high temperature by bayer process[J]. Mining and Metallurgical Engineering, 2007, 27(5): 38-40. [4] 陈文汨, 陈学刚, 郭金权......
拜耳赤泥脱硫工艺的应用基础研究黄芳1,李军旗1,赵平源1,陈义1,张志刚1(1.贵州省贵阳市贵州大学材料科学与冶金学院)摘 要:拜耳赤泥脱除燃煤烟气SO2的新工艺符合"以废制废,变废为宝"的原则.利用拜耳赤泥作为脱硫剂,在填料吸收塔内进行脱硫,脱硫效率高,流程简单,经济,适应性强.结果表明,脱硫率与液固比xA,温度xB和鼓风量xC关系的回归方程为η=-0.52xA2+7.7225xA+0.0056xB2-0.52xB+29xC2-4.3xC+77.15.脱硫终点pH值控制在5.0左右为宜.脱硫产物主要为亚硫酸钙......
; 晶种分解; 无机盐; 机理; bayer process; sodium aluminate solution; seed decomposition; inorganic salt; mechanism; [全文内容正在添加中] ......
]. 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...] have proposed that organic compounds in general dissolved in the Bayer process result in poorer settling of red mud. L et al [6-9] have found that the deterioration in settling of red mud containing......
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......