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, Concepcion, Chile Received 28 November 2016; accepted 18 April 2017 Abstract: The dissolution kinetics of synthetic molybdite (MoO3) in a potassium hydroxide (KOH) medium was studied by varying the system... such as CaCO3 and Cr(MO4)3. Key words: molybdite dissolution; kinetics; potassium hydroxide 1 Introduction Alloyed molybdenum (Mo) is mainly used in the electric power, electronics, metallurgy, missile......
Preparation of copper nanoparticles by chemical reduction method using potassium borohydride ZHANG Qiu-li(张秋利)1, YANG Zhi-mao(杨志懋)2, DING Bing-jun(丁秉钧)2, LAN Xin-zhe(兰新哲)1, GUO Ying-juan(郭莹娟)1... by chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, and dispersant on the size of product and conversion......
Article ID: 1003-6326(2005)03-0697-05 Kinetics of oxidative leaching of ocean polymetallic nodules in molten potassium hydroxide medium WANG Yun-shan(王云山), LI Zuo-hu(李佐虎), LI Hao-ran(李浩然... polymetallic nodules in molten potassium hydroxide medium was investigated in terms of the gas-flow rate, stirring rate, reaction time, reaction temperature and partial pressure of oxygen on the ratio......
and instructive to industrial application. Key words: viscosity; density; potassium chromate; potassium hydroxide; mixed electrolytes... mm. The chemical reagents potassium chromate (K2CrO4) and potassium hydroxide (KOH) used in this work were AR grade and GR grade, respectively, and used directly without further purification......
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, there has been an increasing focus on the extraction of potassium from non-water-soluble potassium minerals. Multiple studies have shown that hydrothermal leaching using sodium hydroxide is particularly... feldspar leaching solution (K 11.7 g/L, Na 75.5 g/L, OH- 61 g/L), a synthetic K–Na alkaline solution was prepared by dissolving potassium hydroxide (analytical reagent (AR) grade) and sodium hydroxide (AR......
ARTICLE J. Cent. South Univ. (2019) 26: 1592-1606 DOI: https://doi.org/ 10.1007/s11771-019-4115-6 Gas-liquid mass transfer of carbon dioxide capture by magnesium hydroxide slurry in a bubble column... Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Magnesium hydroxide (Mg(OH)2) has been considered as a potential solvent for CO2 removal of coal-fired power plant......
%, respectively.Key words:copper anode slime; alkaline pressure oxidation leaching; sulfuric acid leaching; potassium hydroxide......
A novel method to produce potassium chromate from carbon ferrochromeHU Guo-rong(胡国荣), WANG Jia-liang(王家良), PENG Zhong-dong(彭忠东), DU Ke(杜柯) (School of Metallurgy and Environment, Central South University, Changsha 410083, China)Abstract:The oxidizing roasting of carbon ferrochrome in the presence of potassium carbonate and air was investigated. The effects of reaction temperature, reaction time......
Investigation of High Molar Ratio Potassium Solution Used in Zinc-Rich Coatings LI Sheng1,YAN Rui1,WU Hang1 (1.Surface Engineering Research Institute, Beijing 100072, China) 摘要:High molar ratio potassium silicate solution used in zinc-rich water-base coatings was prepared by adding the nanosize SiO2 to the low molar ratio potassium silicate solution, and its microstructure was investigated......
