共搜索到3430条信息，每页显示10条信息，共343页。用时：0小时0分0秒453毫秒
Preparation and infrared emissivities of alkali metal doped ZnO powdersLI Hui-hui(李会会), HUANG Yun-xia(黄云霞), LI Zhi-min(李智敏), YAO Yin-hua(姚银华), ZHANG Shu-yuan(张淑媛) (School of Advanced Materials and Nanotechnology, Xidian University, Xi’an 710071, China)Abstract:Alkali metal (Li, Na, K) doped ZnO powders were synthesized by solid-state reaction at different calcination temperatures and holding......
alkali Bayer red mud(RM) through sulfation-roasting-leaching process. Effects of roasting and leaching conditions including roasting time, roasting temperature, concentrated H2SO4 addition, leaching... roasting and leaching conditions. The alkali-free residue obtained could then be employed as iron-making or building materials.关键词:......
alkali Bayer red mud(RM) through sulfation-roasting-leaching process. Effects of roasting and leaching conditions including roasting time, roasting temperature, concentrated H2SO4 addition, leaching... roasting and leaching conditions. The alkali-free residue obtained could then be employed as iron-making or building materials.关键词:......
and SEM were used to measure the mineral phase and morphology of the solid samples obtained by different alkali hydrothermal treatments as well as the leaching ratio of SiO2 to Al2O3 in alkali solution... leaching [10,11], acid-alkali combination [12-14], alkali hydrothermal process [15], lime sintering [16], and desilicated lime-soda sintering processes [17]. The desilicated lime-soda sintering method......
Trans. Nonferrous Met. Soc. China 22(2012) 1753-1759 Extraction of lithium from lepidolite using chlorination roasting-water leaching process YAN Qun-xuan, LI Xin-hai, WANG Zhi-xing, WANG Jie-xi...: Chlorination roasting followed by water leaching process was used to extract lithium from lepidolite. The microstructure of the lepidolite and roasted materials were characterized by X-ray......
Coupling leaching of sphalerite concentrate PENG Peng(彭 鹏)1, 2, XIE Hui-qin(谢惠琴)1, LU Li-zhu(卢立柱)1 (1. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China; 2. Engineering Command Institute of Chemical Defence, Beijing 102205, China) Abstract: Coupling process of sphalerite concentrate leaching in H2SO4-HNO3 and tetrachloroethylene extracting of sulfur......
of As are 92.14% and 95.21%, respectively, after AsO43- in the solution is reduced by SO2. After washing in dilute sulphuric acid, the purity of As2O3 is 95.14%. Key words: arsenic sulfide slag; alkali leaching... and Engineering, Central South University, Changsha 410083, China) Abstract: Arsenic trioxide was prepared by leaching arsenic sulfide slag in NaOH solution, oxidating with air and reducing with sulfur dioxide......
Science and Engineering, University of Science and Technology Beijing摘 要:The effects of the acid leaching and alkali fusion on the leaching efficiency of Y,Eu... is better than Na2CO3in the alkali fusion.In the first acid leaching,the Wloss is 20.94%when the waste rare earth fluorescent powders are acid leached in H?concentration 3 mol L-1and S/L ratio 1:3 for 4 h......
J. Cent. South Univ. (2019) 26: 2328-2339 DOI: https://doi.org/10.1007/s11771-019-4177-5 Water leaching of arsenic trioxide from metallurgical dust with emphasis on its kinetics YANG Kang(杨康)1, LIU... and Environment, Central South University, Changsha 410083, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Water leaching of As2O3 from......
technology. The brief ?ow of the classical technology includes chloridizing roasting, water leaching, deposition, alkali melting and thermal decomposition. This classical technology has two main problems... Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction DENG Zhi-gan(邓志敢), WEI Chang(魏 昶), FAN Gang(樊 刚), LI Min-ting(李旻廷), LI Cun-xiong(李存兄), LI......
