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is produced from its high grade sulfide ore, molybdenite [4-9]. Besides molybdenite, wulfenite is one of the primary resources of molybdenum. Wulfenite, known as lead molybdate (PbMoO4), belongs to minerals... as well as the depletion of high-grade molybdenum resources. Wulfenite deposits have been found in several world famous mining areas, e.g., Pribram in Czech, Oudida in Morocco, Sidi Renman in Algeria......
a favorable condition under which highly- localized, high-grade, giant ore deposits may be formed. For these reasons, the study of the underground convective pore-fluid flow instability in the upper continental... mantle materials are usually subject to high temperature and pressure relative to the upper continental crust. Because the continental lithospheric mantle is a bridge to link the upper aethenosphere......
to calculate the collision and attachment probability. 2 Experimental 2.1 Material High-grade cassiterite concentrate was obtained by gravity separation of a tin ore from Gaofeng Mining Co.,Ltd... of fine particles has become particularly important in recent years as advances have been made in grinding, which allows low grade mineral deposits to be economically exploited[1,2]. The poor recovery......
. Quantitative analysis method of high-grade highways slope failure factors[J]. Highways & Automotive Applications, 2003(3): 29-31. [5] 夏元友, 朱瑞赓. 岩质边坡稳定性多人多层次模糊综合评价系统研究[J]. 工程地质学报, 1999, 7(1): 46-53.XIA Yuan... assessment indexes system of high rock slope based on AHP HE Hai-ying1, HU Tian2, ZHAO Jian2 (1. Hunan Expressway Administration Bureau, Changsha 410001, China; 2. School of Traffic and Transportation......
products was investigated for the recovery of metal sulfide and ZnS can be concentrated with a high concentration ratio and concentrate grade. By using the sulfidizing process, it is expected... be concentrated by a conventional rougher flotation process with high concentration ratio and concentrate grade. References [1] WANG Jun, LU Jin-feng, ZHANG Qi-wu, SAITO F. Mechanochemical sulfidization......
mobility and infrared spectra measurements. In addition, the effects of metal cations on the flotation were further discussed. 2 Experimental 2.1 Materials A rough high-grade cassiterite concentrate... Utilization of Low-Grade Ores, Shanghang 364200, China Received 23 May 2012; accepted 23 April 2013 Abstract: Solution chemistry and flotation of cassiterite in the presence of alkyl hydroxamic acid......
the demand for high-grade titanium ores, commercial practices including roasting and smelting are followed to upgrade the ilmenite resources by removing iron oxides and other impurities. Smelting... and experimental results. Key words: ilmenite; leaching; mechanical activation; roasting; titanium 1 Introduction Processing of the ilmenite ore for the production of pigment grade TiO2 often becomes......
; 文献标志码:A 文章编号:1672-7207(2016)07-2415-09 Analysis of temperature field of high grade highway embankment in permafrost regions..., China) Abstract: Using the finite element method, the temperature field of high grade highway embankment was simulated and analyzed taking into account of climate warming. The relationship between......
]. Biomass & Bioenergy, 2014, 63: 268-279. [13] SHATALOV A A, PEREIRA H. High-grade sulfur-free cellulose fibers by pre-hydrolysis and ethanol-alkali delignification of giant reed (Arundo donax L.) stems... heavy metals in metal-contaminated soils [1,2]. Because of its rapid growth and high biomass yield, giant reed has been explored as an option for phytoremediation, particularly, of soils polluted......
composition of the mixed feed materials is listed in Table 1. This process produces high-grade matte, and moderate copper-content slag. The chemical compositions of the matte and slag are listed... metallurgy plays a significant role in nonferrous metals industry, and research and development on new pollution-free and high efficient copper extractive techniques are the developing direction......
