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____________________________________________________________________________________________ Abstract: Digestion behaviors of several single silicon-containing minerals including kaolinite, illite and pyrophyllite in aluminate solution were investigated. The result shows that the digestion rates of kaolinite, illite and pyrophyllite in aluminate solution were influenced by reaction conditions such as temperature. Adopting quantum chemistry theoretical calculation, using CASTEM......
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Trans. Nonferrous Met. Soc. China 23(2013) 3434-3439 Preparation of ammonium jarosite from clinker digestion solution of nickel oxide ore roasted using (NH4)2SO4 Xiao-yi SHEN, Hong-mei SHAO, Jia-dong... for eliminating Fe3+ from NiSO4 solution, the digestion solution of the clinker was used as raw material, which was obtained from roasting the nickel oxide ore with (NH4)2SO4. The ammonium jarosite......
ion equilibrium concentration was observed in digestion process, whereas 35 mg/L lithium ion concentration remained in solution after precipitation time of 9 h. Moreover, equilibrium concentration... perspective in removal or extraction of lithium from sodium aluminate solution in alumina refineries. Key words: lithium ion; equilibrium concentration; sodium aluminate solution; digestion; precipitation......
of CaO added and composition of aluminate solution on reaction behavior of pure anatase in high-pressure digestion process of bauxite, reaction mechanism of anatase was preliminarily determined... between these titanium-containing minerals and components of aluminate solution will not take place. But as for the digestion of diasporic bauxite in China, higher digestion temperature ranging from 210......
and the concentration of dissolved titanate ions in the sodium aluminate solution decreases. Thus, the effect of hydrothermal treated anatase on the digestion performance of alumina gradually decreases or even disappears... and mechanism of anatase on digestion performance of alumina LI Xiao-bin1, 2, YU Shun-wen1, 2, DONG Wen-bo1, 2, CHEN Yong-kun1, 2, QI Tian-gui1, 2, ZHOU Qiu-sheng1, 2, LIU Gui-hua1, 2, PENG Zhi-hong1......
in a shorter preparation period using a novel MW digestion and alkali fusion assisted hydrothermal method and to investigate its adsorption characteristics toward Cd(II) from aqueous solution. The effects... J. Cent. South Univ. (2018) 25: 9-20 DOI: https://doi.org/10.1007/s11771-018-3712-0 Microwave digestion and alkali fusion assisted hydrothermal synthesis of zeolite from coal fly ash for enhanced......
Effects of intense magnetic field on digestion and settling performances of bauxiteLü Guo-zhi(吕国志)1, 2, ZHANG Ting-an(张廷安)1, 2, WANG Xiao-xiao(王小晓)1, 2, ZHANG Xu-hua(张旭华)1, 2, LIU Yan(刘燕)1, 2, ZHAO... of Materials and Metallurgy, Northeastern University, Shenyang 110004, China)Abstract:The effects of magnetic field intensity, roasting temperature and roasting time on digestion rate and settling......
; sodium aluminate solution; mass concentration of iron; high-pressure digestion 随着我国优质铝土矿资源的日渐匮乏,高硫铝土矿的充分利用问题引起人们极大关注.采用拜耳法处理高硫铝土矿生产氧化铝时,矿石中的硫(特别是S2-)会在生产过程中积累,并产生一系列不良后果[1],不仅增加碱耗,腐蚀设备,结疤严重,而且会造成循环母液溶出液颜... in digestion solution 由图2可以看出:当保温时间从0增加到30 min时,溶液中的铁质量浓度从60 mg/L急剧下降至30 mg/L以下,时间延长到1 h时,铁质量浓度从30 mg/L左右降至20 mg/L左右,而且随着时间的延长,铁质量浓度基本保持稳定.铁和硫在铝酸钠溶液中以配合物形式存在[6],溶液中存在有微小的铁胶体[13]和未溶解的固体颗粒,在保温的过程中,这些细小颗粒可能充当了晶种的作用......