【摘 要】
：
Decomposition of sodium aluminate solution is the key step for alumina production; however, only approximate 55% alumina yield is obtained by seeded precipitation.In this study, a method was explored
【机 构】
：
National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory
【出 处】
：
第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
论文部分内容阅读
Decomposition of sodium aluminate solution is the key step for alumina production; however, only approximate 55% alumina yield is obtained by seeded precipitation.In this study, a method was explored to recover alumina from spent Bayer liquor by deep decomposition with methanol.A variety of conditions, including methanol amount, reaction time, reaction temperature and seed amount, were elaborately investigated.The results showed that the appropriate conditions were 1∶1 in volume ratio of methanol to spent Bayer liquor, more than 1.0 seed coefficient, in a 40℃ water bath for 24 hours.
其他文献
Although the photosensitized oxidation has been found many synthetic applications, regio-and stereo selectivity controls are still difficult issues.Indeed selective oxidation of alkenes by molecular o
Black shales contain economically significant concentrations of metals, such as Mo, Ni, et al.During the process of treatment of Mo, nickel is enriched into the metalliferous black shales residues.The
The main purpose of this study was to characterize and to extract bismuth from a low grade bismuth glance floatation concentrate.The physical, chemical and mineralogical characterization of the flotat
Liquid-liquid extraction (LLE), also called solvent extraction (SX), is a process that allows the separation of two or more components due to their unequal solubilities in two immiscible liquid phases
Anhydrous magnesium chloride, the dehydration product from magnesium chloride hydrate(MgCl2·nH2O), is a conventional raw material to prepare electrolytic magnesium.Because the dehydration of magnesium
An experimental investigation is presented on Ti (Ⅳ) extraction from acidic sulfate solutions using trialkylphosphine oxide (TRPO) in dodecane as an extractant.The effects of H2SO4 concentration, TRPO
The extraction of zinc from ammoniacal solutions of ammonium chloride using 1-Phenyl-4-ethyl-1,3-octadione (a sterically hindered β-diketone) as extractant has been investigated as a function of phase
Studies have been carried out to determine maximum recovery of Co, Mn and Zn from zinc plant residue in H2O2-H2SO4-H2O solutions.Hydrogen per oxide is used as a reductive agent.The leaching parameters
Studies on indium neutralization precipitation and deep purification of zinc calcine reductive leaching solution was investigated in this paper.Copper residue,In-enriched dreg and deeply purificatory
Nickel Laterites remain important to the future supply of Ni and Co as they contain the bulk of known nickel and cobalt reserves.In this study, low-grade laterites from Philippines were mixed with con