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series of measurements) and mechanically activated (the second series of measurements) under the same experimental conditions, where in each case about 10 mg powder sample was used. Isothermal mass......
from the analysis. The phase-II dolomite intergrowths and phase-III dolomite veins show similar compositions (Table 2): CaO: 30.14%–32.99%; MgO: 17.78%– 20.16%; Ca/Mg ratio: ca.1.6; SrO and BaO... system has long been influenced by saline fluids rich in Ca, Mg, Na and bicarbonates. Fluid temperature and salinity were the major variables in this diagenetic environment. The fluid inclusions......
显微测温学的系统研究,结合阴极射线激发荧光(CL)图像,建立流体包裹体形成的相对时序与矿物生成顺序的关系.在此基础上,运用LA-ICP-MS分析技术,精确测定各世代单个流体包裹体中主量元素(如K,Na,Ca,Mg等)和成矿元素(如Cu,Pb,Zn,Au,As等)的组成,可以提取由成矿流体成分变化所反映的成矿过程等方面的重要信息.显微红外测温技术在矿床研究中得到了重要的应用.热液矿床中大多数金属矿物......
solutions of Sarcheshmeh Copper Mine containing Cu (770 mg/L), Ni (3200 mg/L), Fe (800 mg/L) and Zn (200 mg/L) were comprehensively investigated using D2EHPA, LIX 984, Cyanex 302, Chemorex CP 150 and Acorga... ions such as manganese can be very harmful for the process even in the mg/L (ppm)-scale, because this ion is able to oxidize the extractant and diminish the amount of recovery. According to the results......
metallogenic stages in the Huize and Zhaotong lead-zinc deposits [42, 44, 60], and corresponds to the zoning of geochemical elements(I-1: Fe and Zn; I-2: Zn, Pb, Ca, and Mg; I-3: Pb, Zn, and Ca; and I-4: Fe, Ca, and Mg). Figure 6 Two zonation forms of metal minerals in lead and zinc deposits, Southwest China(AB profile-horizontal zoning; and CD profile-vertical zoning. Abbreviations: Gn-galena; Sp......
, cadmium, chromium and nickel, are mainly considered. 2.4 Adsorption experiments A certain amount of biochar is weighed and mixed with 25 mL of methylene blue solution (pH=7.0, 200 mg/L... and the adsorption capacity (Q, mg/g) of biochar are calculated, respectively, in order to characterize the adsorption potential of biochar. ......
,并剥蚀黄铁矿中含有的某些有害矿物.彭樱等[39]在研究超声波对黄铜矿与辉钼矿可浮性的影响时结果表明:在海水作为媒介时,短时间超声作用矿物使表面Mg(OH)2沉淀等亲水物质脱落,导致黄铜矿与辉钼矿可浮性增强,但长时间超声处理矿物表面会重新氧化,可浮性均降低. 图2 不同超声功率下炼焦中煤的扫描电镜照片[35] Fig. 2 SEM images of coking..., 胡岳华. 浮选溶液化学[M]. 长沙:湖南科学技术出版社, 1988: 132-138. WANG Dian-zuo, HU Yue-hua. Flotation solution chemistry[M]. Changsha: Hunan Science and Technology Press, 1988: 132-138. [9] 张作金, 代淑娟, 韩佳宏, 等. 菱镁矿浮选体系中金属......
distribution of tailings The X-ray diffraction pattern (Figure 2) and the mineral composition (Table 1) demonstrated that the main mineral compositions of tailings are CaCO3, FeCO3, SiO2, and Ca(Mg, Fe... recorded in Table 4. The tap water meets the standard of drinking water in China (GB5749-2006), containing minimal quantities of metal elements. Table 4 Substances in tap water (mg/L) [36] Diluted......
J. Cent. South Univ. (2020) 27: 629-673 DOI: https://doi.org/10.1007/s11771-020-4322-1 Decision making tools for optimal material selection: A review Divya ZINDANI, Saikat Ranjan MAITY, Sumit BHOWMIK Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar,Assam-7880......
for aqueous gelcasting alloy Ni-362-3 STAMPFL等[65]将MoldSDM(Mold shape deposition manufacturing)模具制造工艺与凝胶注模成型技术相结合,在快速分层制备的腊模内通过浇注高固相体积分数的金属粉末料浆,成功制备出形状复杂的不锈钢叶轮,烧结后该叶轮的微观结构及力学性能优良,可与传统粉末冶金工艺制件媲美.图......
