共搜索到4508条信息，每页显示10条信息，共451页。用时：0小时0分0秒709毫秒
J. Cent. South Univ. Technol. (2009) 16: 0410-0415 DOI: 10.1007/s11771-009-0069-4 Kinetics of nickel leaching from roasting-dissolving residue of spent catalyst with sulfuric acid FENG Qi-ming...; Abstract: Sulfuric acid leaching......
......
......
products of secondary reaction are the mixture of hydrogarnet and sodium hydrate alumina-silicate. SiO2 concentration rises firstly and then drops with the increase of leaching temperature. XRD results... aluminate slag; secondary reaction; alumina; leaching 1 Introduction With the significantly increasing alumina production capability in recent years, the discrepancy between the supply and the demand......
Roasting-induced phase change and its influence on phosphorus removal through acid leaching for high-phosphorus iron oreMin Yang1,2,3,Qing-shan Zhu1,Chuan-lin Fan1,Zhao-hui Xie1,Hong-zhong Li11... on phosphorus removal via leaching has been investigated for high-phosphorus iron ore. The findings indicate that phosphorus in the ore is associated with goethite and exists mainly in amorphous Fe3PO7 phase......
of aluminosilicate glass and the formation of zeolites together, the leaching efficiency of SiO2 can reach 42.13% with the mass ratio of Al2O3/SiO2 up to 2.19:1. Key words: high alumina coal fly ash... temperature and more time would also advance the production of zeolites which decreased the leaching efficiency of SiO2. When the high alumina CFA was treated at 95 °C for 2 h in 6 mol/L alkali solution......
CFD simulation of effect of anode configuration on gas–liquid flow and alumina transport process in an aluminum reduction cellZHAN Shui-qing(詹水清)1, LI Mao(李茂)1, ZHOU Jie-min(周孑民)1, YANG Jian-hong(杨建... 450041, China)Abstract:Numerical simulations of gas–liquid two-phase flow and alumina transport process in an aluminum reduction cell were conducted to investigate the effects of anode configurations......
been performed on alumina extraction from CFA, mainly involving acid leaching [12,13], sintering [14-16], and hydro-chemical extraction [17,18]. However, acid leaching inevitably causes severe... was studied. The effects of the reaction temperature and reaction time on decomposition rates of mullite and corundum and alumina extraction efficiency were investigated. The results show that increasing......
Alkaline digestion behavior and alumina extraction from sodium aluminosilicate generated in pyrometallurgical processBo-na Deng,Guang-hui Li,Jun Luo,Jing-hua Zeng,Ming-jun Rao,Zhi-wei Peng,Tao... ores are easily transformed into sodium aluminosilicates in the presence of Na2O constituents, which alters the leaching behaviors of Al2O3 and SiO2. It was confirmed that sodium aluminosilicates......
on leaching process of sintered powder in extracting alumina from fly ash SUN Pei-mei, TONG Jun-wu, XU Hong-yan, ZHAO Zhe, XUE Bing, ZHANG Jiao-yang (School of Chemical and Environmental Engineering, China... was studied. The influence of technical conditions on leaching of Al2O3 and SiO2 in leaching process was examined. The results indicate that the leaching ratio of alumina in sintered powder can be more than......
