共查询到20条相似文献,搜索用时 93 毫秒
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微波在稀贵金属冶金中的应用研究进展 总被引:5,自引:0,他引:5
张文朴 《稀有金属与硬质合金》2008,36(2):49-53
概述了近年来微波在稀有金属及贵金属冶金生产工艺中应用研究的某些进展,并对微波预处理矿石及促进钼精矿浸出、微波碳热制备法、微波等离子体制备法、微波烧结与煅烧、微波用于含钨钼化学品制备等工艺和技术进行了介绍. 相似文献
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详细介绍了云铜稀贵分厂KGPS可控硅中频电源在浇铸工艺流程中的应用,阐述了KGPS可控硅中频电源主电路系统及原理,控制系统功能和原理,系统调试以及应用取得的节能效果。 相似文献
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真空冶金在铅阳极泥回收稀贵金属中的工艺研究 总被引:1,自引:0,他引:1
通过真空冶金分离贵铅的探索性实验研究,经真空蒸馏分离,贵铅中99%铅、铋进入挥发物,约85%的锑进入挥发物,银、铜99%进入残留物;可大幅缩短传统工艺吹炼时间,在缩短工艺流程,节能减排,提高金属回收率方面效果明显。 相似文献
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介绍了无机膜过滤技术在处理轧钢乳化液、钛白粉的废酸液等废水中的应用。经无机膜处理后的废水悬浮物〈22mg/L,油含量,10mg/L,达排放标准。 相似文献
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难熔金属复合材料的开发与应用 总被引:3,自引:0,他引:3
王国宏 《稀有金属与硬质合金》1998,(2):58-65
介绍了难熔金属在现代复合材料中的应用现状、复合材料的制造方法.包括以难熔金属为基和以化合物为基的复合材料、层状复合材料、用难熔金属纤维增强的复合材料、梯度功能材料。超导复台材料等,展望了难熔金属复合材料的发展前景。 相似文献
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介绍了砷化氢的毒性及危害性。传统的铜电解后液净化方法电积时不可避免地析出砷化氢,严重污染环境。控制阴极电势电积法彻底解决了砷化氢的析出问题,做到了环境治理与经济效益的统一,值得推广应用。 相似文献
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Igor A. Morozov Stanislav P. Gordienko Viktor M. Panashenko Tatyana V. Dubovik 《Powder Metallurgy and Metal Ceramics》2005,44(1-2):93-96
Thermodynamic modelling is provided for heat treatment of AlN powder in a hydrogen atmosphere. According to the results of modelling treatment of AlN containing impurities of O, C, S, Si, Fe, and Ti in a hydrogen atmosphere at a pressure of 0.2 MPa and at 1200–1500 K should lead to purification of nitride from S, Si, and C. It is recommended that purification is not carried out below 1300 K.__________Translated from Poroshkovaya Metallurgiya, Nos. 1–2(441), pp. 112–116, January–February, 2005. 相似文献
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Studies on Oxygen Characteristics of YBa2 Cu3 O7-x and Its Applications to Air Separation and Gas Purification 总被引:2,自引:0,他引:2
Since the discovery of high temperature supercon ductive material YBa2Cu3O7-x ( YBCO in short ),many researchers have especially studied the relation ship between superconductivity and oxygen contents inthis oxide. It was found that the supercondu… 相似文献
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介绍了熔盐电脱氧法制备难熔金属及合金的基本原理和工艺,分析了熔盐电脱氧法的优势及目前存在的主要问题,归纳了采用熔盐电脱氧法制备难熔金属及合金的研究进展,指出了该制备工艺的发展趋势,并对其推广应用和实现大规模工业化前景等进行了讨论. 相似文献
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We have established the regular behavior of the change in chemical composition and grain size of refractory material when sintered in the presence of a moving liquid phase under conditions including a high temperature gradient and continuous heating, and on this basis we propose a mechanism for primary purification to remove impurities from boron-containing powder materials during zone melting. We have shown that the degree of purification depends on the completeness of recrystallization of particles of the refractory material through the solvent melt, and is determined by the physical and processing properties of the original powders, the temperature and time parameters for the zone melting, the structure of the phase diagram, and the kinetics of diffusional interaction processes in the system refractory material solvent for the impurities. 相似文献