共查询到20条相似文献,搜索用时 125 毫秒
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赖建林 《有色金属科学与工程》1993,7(1):45-47
叙述了碲回收试验和工业处理情况, 所选流程包括酸浸-氯化-还原等工序。工业处理碲回收率92.6%, 产品碲粉品位达99.14%。该流程特点是:流程短, 投资省, 收率高, 成本低。 相似文献
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从中和渣中回收金属碲 总被引:1,自引:0,他引:1
叙述了碲回收试验和工业处理情况,所选流程包括酸浸一氯化—还原等工序,工业处理碲回收率92.6%,产品碲粉品位达99.14%。该流程特点是,流程短,投资省,收率高,成本低。 相似文献
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《有色冶金设计与研究》2020,(4)
介绍了稀散金属硒、碲在矿物火法冶炼过程的富集走向,分析了稀散金属硒、碲火法回收工艺的研究进展。针对从低品位固废中回收硒、碲的工艺现状,分析了从工业废弃物中回收稀有、稀散金属的行业发展趋势,并对未来稀散金属硒、碲回收工艺进行了展望。 相似文献
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CL—TBP微柱分离二硫代比啉甲烷光度法测定碲 总被引:1,自引:1,他引:0
CLTBP微柱分离二硫代比啉甲烷光度法测定碲罗明标周跃明林素卿(华东地质学院应用化学系,临川344000)关键词:CLTBP微色谱柱碲二硫代比啉甲烷光度法1引言金属碲及其化合物在冶金、化工、电子工业等方面有广泛的应用。随着碲需求量的逐年增长,研究... 相似文献
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J Flaud M Betrencourt P Arcas H Burger O Polanz WJ Lafferty 《Canadian Metallurgical Quarterly》1997,182(2):396-420
Spectra of a natural sample of hydrogen telluride as well as a spectrum of monoisotopic H2 130Te have been recorded by means of Fourier transform spectrometry with a resolution of 0.003 cm-1 in the spectral domain 7.5-4.3 μm where it is easy to observe the main absorbing bands nu1 and nu3. We have located and assigned for the first time the 2nu2 band which appears in the lower wavenumber range of the recorded spectral domain near 1700 cm-1. It proved necessary to treat simultaneously the three states (020), (100), and (001). nu1 and nu3 are indeed Coriolis-coupled vibration-rotation bands and it was observed that a few rotational levels of (001) could not be fitted to within their experimental accuracy without considering the second-order Coriolis interaction between the rotational levels of (020) and (001). In this way all the experimental levels were calculated to within the experimental uncertainty, and precise sets of vibrational energies and rotational and coupling constants were obtained for the seven most abundant H2Te isotopic species, namely H2 130Te, H2 128Te, H2 126Te, H2 125Te, H2 124Te, H2 123Te, and H2 122Te. For the most abundant isotopic species H2 130Te the bands centers arenu0 (2nu2) = 1715.9568, nu0 (nu1) = 2065.2709, nu0 (nu3) = 2072.1101 cm-1. Copyright 1997Academic Press 相似文献
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从铋碲矿中分离碲的新技术 总被引:2,自引:0,他引:2
蒋新宇 《稀有金属与硬质合金》2000,(2):8-10
铋碲矿用盐酸加氢酸钠浸出,浸出濉用Na2SO3学原得粗碲粉,还原后液水回收铋。粗碲粉经盐酸浆化洗涤,可得纯度达96%的硫粉 相似文献
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The heats of formation, referred to the component elements in their stable crystalline forms, of crystalline Se?Te alloys containing 0 to 100 at. pct Te and amorphous alloys containing 0 to 30 at. pct Te were measured by liquid metal solution calorimetry. The heats of formation of the crystalline and amorphous alloys changed nonmonotonically with composition in a parallel manner. The crystalline alloys had negative heats of formation in the range of 0 to approximately 17 at. pct Te; the largest negative value of approximately?0.235 kcal/g-atom occurred at 10 at. pct Te. At 20 at. pct Te the heat of formation was positive and had a value of approximately 0.115 kcal/g-atom and at higher tellurium concentrations it again turned negative but was very small. The heats of formation of all amorphous alloys investigated were positive. A minimum of approximately 0.810 kcal/g-atom at 10 at.pct Te and a maximum of 1.040 kcal/g-atom at 20 at. pct Te corresponded to the largest negative value and the largest positive value of the heat of formation of the crystalline alloys of the respective compositions. The temperatures of maximum rates of crystallization and fusion and the heat effects associated with the crystallization and fusion of the amorphous alloys were measured by differential scanning calorimetry. With increasing tellurium concentration the temperature of crystallization decreased and the heat effect and the temperature associated with fusion increased. 相似文献
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J. D. Verhoeven A. J. Bevolo J. S. Park 《Metallurgical and Materials Transactions A》1989,20(9):1875-1881
The directionally solidified Fe-3.4 wt pct C-2 wt pct Si-0.06 wt pct Te alloys of Part I were fractured inside a scanning
Auger microscope. The fracture surfaces were characterized, and fracture was found to occur predominantly along the graphite/iron
interfaces of the type D gray structures. The iron/graphite interfaces were found to be covered with Te having a measured
thickness of one monolayer. The effect of this selective adsorption of the Te upon the strong structure control which Te produces
in cast iron is discussed in terms of current models. 相似文献