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Effect of Chemical Compositions on Temperature Susceptibility of Bitumens梁永胜1,2,余剑英11. Key Laboratory of Silicate Materials Science and Engineering of Education Ministry, Wuhan University of Technology2. Inner Mongolia High-grade High Way Construction and Development Co., Ltd摘 要:The viscosity of five bitumens was measured at different temperatures......
formation in thermal processes[5, 6]. Many metallurgical processes, such as nickel flash smelting, nickel direct high-grade matte smelting, copper Isasmelt, copper flash smelting, Mitsubishi copper smelting... rate of lead). REFERENCES [1]TAN Peng-fu, Neuschuetz D. A thermodynamic model of nickel smelting and direct high-grade nickel matte smelting processes-Model development and validation[J......
. Cooling effect of combined L-shaped thermosyphon, crushed-rock revetment and insulation for high-grade highways in permafrost regions[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(6): 1043-1049. [2] 樊凯, 俞祁浩, 袁堃, 等. 多年冻土区高等级公路新型调控路基技术研究[J]. 地下空间与工程学报, 2013, 9(S1): 1681-1687. FAN Kai, YU Qihao, YUAN Kun, et al. Study on new temperature-controlling embankment for high-grade highway......
. Several synthetically useful organic transformations using boric acid as a catalyst have been reported[5-9]. The main method of producing boric acid is sulfuric acid method with high-grade ascharite (w(B2O3)＞16%) as the raw material. However, the reserves of high-grade ascharite have been decreased and the low-grade ascharite has not been used to produce boric acid because of the low content......
. The adsorption mechanism of octanol and BHA on the surface of cassiterite was analyzed by ultraviolet spectroscopy and infrared spectroscopy measurements. 2 Experimental 2.1 Materials The high-grade...-grade concentrates at high recoveries from finely disseminated ores [J]. Minerals Engineering, 1992, 5: 429-434. [9] BULATOVIC S, de SILVIO E. Process development for impurity removal from a tin......
composed of aluminum of middle-high proportion, silicon of middle-low proportion, sulphur of high proportion and middle-high Al/Si ratio (A/S) ores. Most of the ores are of high-grade alumina, but they can... the sulfur from the high-sulfur bauxite. It can be seen from aluminum silicon ratio that Guizhou ores A, B and Henan ore A belong to the middle-grade bauxites (A/S of 4-7), but Henan ores B, C and Guangxi......
J. Cent. South Univ. (2012) 19: 77-84 DOI: 10.1007/s11771-012-0975-8 Leaching kinetics of low-grade copper ore with high-alkality gangues in ammonia-ammonium sulphate solution LIU Zhi-xiong(刘志雄)1, 2... Engineering, Jishou University, Jishou 416000, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: The leaching kinetics of low-grade copper ore with high-alkality......
ores by pyrometallurgical operations because sulfide ores are easily separated from gangue and concentrated by conventional flotation techniques. Recently, the depletion of high-grade copper sulfide... reported. Tangdan oxidized copper ore, which contains high-grade calcium-magnesium carbonate gangues and has poor floatable characteristics, is one of the largest copper mine in China with a reserve......
is produced pyrometallurgically [1]. However, with gradual depletion of high-grade copper ore deposits, it becomes more difficult to extract copper by the conventional pyrometallurgical methods. Hydro... kJ/mol (II), respectively. Tangdan oxidized copper ore, which contains high-grade calcium magnesium carbonate gangues and has poor floatable characteristics, is one of the largest copper mines in China......
, the exhausted high-grade quality bauxite resources in China and the restrictive export policies of foreign bauxite [1]. The reserve of high sulfur-containing diasporic bauxite has reached 560 million tons... diasporic bauxite in Guizhou Province is high-grade quality bauxite and it is suitable for the Bayer process [2,3]. During the high temperature digestion of Bayer process, the sulfur minerals can......
