共查询到19条相似文献,搜索用时 93 毫秒
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概述了铯榴石提铯工艺的现状,研究制定了铯榴石硫酸法生产铯盐工艺,解决了工艺中铯矾高温分解的难题,采用特种树脂使铯盐转型,据此建成了年产8 ̄10t不同铯盐的小型生产线。 相似文献
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贵金属材料具有独特的抗腐蚀性、生理上的无毒性、良好的延展性以及生物相容性,它在医药领域的应用越来越广泛。本文着重介绍了贵金属材料在牙科、针灸、体内置入式电子装置、贵金属药及医用生物传感器等方面的研究与发展。 相似文献
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浅谈拓宽我国铷铯的应用领域 总被引:6,自引:0,他引:6
世界铷铯化学品的生产及其应用主要集中在美国、日本、欧洲和俄罗斯,近20年世界铷铯的应用有较大的发展,日本铷铯的应用发展尤其迅速,跃居世界第一,我国有丰富的铷铯资源,先进的铷艳提取工艺及高质量铷铯产品的生产能力,但铷铯的应用却十分落后,其应用量仅占世界的1/14,因此拓宽我国铷铯的应用领域是发展我国铷铯工业的当务之急。 相似文献
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介绍了一种利用铯榴石提铯置换转型生产硝酸铯的工艺,叙述了其工艺流程、产品质量、工艺单耗、三废处理,并与离子交换树脂法制取硝酸铯工艺的特点作了比较。 相似文献
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贵金属具有良好的化学稳定性,高电导率和热导率,特有的电学、磁学、光学等性能,是发展半导体微电子技术必不可少的材料.文章综述了半导体器件欧姆接触、线路和电极、金属化系统、半导体包封,以及化合物半导体、液体金属离子源等用贵金属材料的应用和发展. 相似文献
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Aimed at high content of valuable metals, complicated composition, difficult to separation of precious metals six component alloy wastes, the present paper proposed a new technology of high efficient separation and purification. Using fragmentation technology realizes fast dissolution of palladium, silver, copper and zinc in the wastes, and high efficient and complete separation of them from gold and platinum; using evaporation thermal decomposition technology of mixed solution produced by nitric acid dissolving palladium, silver, copper and zinc, complete and high efficient separation of silver from palladium was realized; by control of solution acidity, using hydrazine reduction method, high efficient and complete separation of gold from platinum was realized. Using this new technology, the recovery rates of palladium and silver are above 99%, and gold and platinum above 98%, the grade of pure metals are above 99.95%. 相似文献
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介绍贵金属浆料的性能及其在微电子工业中的应用,对贵金属浆料的研制与生产,金属粉末的制备技术和配方设计均有简要的评述。 相似文献
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FAN Xingxiang FU Guangqiang DONG Haigang WU Yuedong LIU Yang ZHAO Jiachun WU Xiaofeng LI Bojie TONG Weifeng 《贵金属》2012,33(Z1):11-17
On the basis of reviewing the progress in the high efficient enrichment from secondary resources of low grade precious metals at home and abroad, a process route of the high efficient enrichment precious metals from secondary resources of low-grade metals by adding iron oxide as the trapping agent, reducing agent, additive, mixing uniformly and grinding, pelletizing, reduction, grinding and separation, and selectively acid leaching iron has been put forward in this paper. The experiments of reduction, grinding and separation, and selectively acid leaching iron were carried out mainly. Under the decided experiment parameters and conditions, iron generated during the reduction can trap precious metals during reduction, high active alloy powders were obtained from the reduced products by grinding and separation, the concentration of precious metals was obtained by acid leaching high active alloy powders. The better enrichment effect was obtained by adopting the technical route of processing. Other low grade noble metal materials and enrichment ratio of precious metals from the materials to acid products was high through acid leaching. This process has the advantages of simple process, environmental-friendly, strong adaptability of raw materials, high concentration ratio, which was regarded as a kind of the general efficient enrichment technology of low grade precious metal materials. 相似文献
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以2008年~2016年期间美国纽约商品交易所贵金属每日交易价格的历史记录为基础,阐述贵金属由于价值偏移而引发的剧烈价格波动,分析导致出现贵金属价值偏移的主要因素,指出人类社会活动是形成价值偏移和价格波动的根本原因。 相似文献