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ammonium salt; flotation ___________________________________________________________________ 1 Introduction There are abundant bauxite resources in China, and more than 98% of them are diaspore...J. Cent. South Univ. Technol. (2007)04-0500-04 DOI: 10.1007/s11771-007-0097-x Effect of quaternary ammonium salts on flotation behavior of aluminosilicate minerals ZHAO Sheng-gui(赵声贵), ZHONG......
Trans. Nonferrous Met. Soc. China 23(2013) 1489-1500 Kinetics analysis of decomposition of vanadium slag by KOH sub-molten salt method Hui-bin LIU1,2,3, Hao DU1, Da-wei WANG4, Shao-na WANG1, Shi-li... of Mining and Technology, Beijing 100083, China Received 8 May 2012; accepted 25 November 2012 Abstract: A novel process was developed for the decomposition of vanadium slag using KOH sub-molten salt......
by tectonic nappe, salt dome, regional extension, oil and gas accumulation, diapir of flow sand, fluid drainage and metallic precipitation [73]. In addition, the mineralization in the Jinding area... J. Cent. South Univ. (2020) 27: 1828-1845 DOI: https://doi.org/10.1007/s11771-020-4411-1 Provenance and salt structures of gypsum formations in Pb-Zn ore-bearing Lanping basin, Southwest China......
words: extraction; acidic leach liquor; Aliquat 336; V(V); Cr(III) 1 Introduction Vanadium and chromium are regarded as strategic metals and their compounds are widely used in many industries... for the extraction of vanadium and chromium from various acidic aqueous solutions using different types of extractants such as HDEHP [16-22], chelated extractant LIX63 [23], Aliquat 336 [12,24,25], Alamine 336......
with a sodium salt which can be one or combination of NaCl, Na2CO3 and Na2SO4 under an oxidizing atmosphere, which will convert the vanadium values of V-slag into water-soluble sodium vanadate [7-9]. In some... via vacuum filtration, and the residue was washed with deionized water. The total vanadium contents in the sintered samples and filtrates were determined by ferrous ammonium sulfate titration method......
, SKYLLAS-KAZACOS M. Chemical modification and electrochemical behaviour of graphite fibre in acidic vanadium solutions [J]. Electrochem Acta, 1991, 36: 513-517. [6] RYCHCIK M, SKYLLAS-KAZAOCS M... Characteristics of graphite felt electrode electrochemically oxidized for vanadium redox battery application LI Xiao-gang(李晓刚)1, HUANG Ke-long(黄可龙)1, LIU Su-qin(刘素琴)1, TAN Ning(谭 宁)1, CHEN Li......
that it is feasible to prepare the V2O5 by calcination from ammonium metavanadate using response surface methodology. Key words: vanadium pentoxide; ammonium metavanadate; calcination; response... few studies to optimize the preparation for vanadium pentoxide from ammonium metavanadate by the RSM approach. Based on the above-mentioned facts, the main objective of this work is to determine......
制酸废催化剂回收钒王晓丹1,朱云1(1.云南省昆明市昆明理工大学材料与冶金工程学院)摘 要:用硫酸浸出-P204萃取工艺从制酸废催化剂中回收钒.结果表明,在浸出条件为硫酸浓度50g/L,液固比2∶1,时间30min时,钒的浸出率可达95%.浸出液经过P204萃取,饱和NaHCO3溶液反萃,反萃液净化,铵盐沉钒,偏钒酸铵热分解后得到了合格的V2O5.关键词:冶金技术； 钒； 硫酸浸出； 制酸废催化剂......
Extraction of cobalt from laterite ores by citric acid in presence of ammonium bifluoride LI Guang-hui(李光辉),RAO Ming-jun(饶明军), LI Qian(李 骞), PENG Zhi-wei(彭志伟), JIANG Tao(姜 涛)1 School... in the presence of ammonium bifluoride. The results show that ammonium bifluoride enhances the leaching of cobalt by citric acid, and 84.5% cobalt is extracted from a laterite ore containing 0.13% Co......
nano La2O3 powder is enorgh for increasing biomass by 133% compared with that of the CK. Key words:nano La2O3 alkalescent ammonium citrate; homogeneous precipitation; biological effect; rare earths...Nano Lanthanum Oxide Preparation by Alkalescent Ammonium Citrate System and Its Primary Biological Effect 范玉斌1,伍艳平1,黄小卫1,杨军1,王甲辰1,刘向生1 (1.Beijing General Research Institutes for Nonferrous Metals......
