共查询到16条相似文献,搜索用时 78 毫秒
1.
通过对工业氧化铍生产过程中的烧结、浸出、水解等工序的工艺操作和技术条件的调整控制,产出合格的工业氧化铍,并达到提高工业氧化铍质量和回收率的目的。 相似文献
2.
3.
叙述了非绿柱石铍矿生产工业氧化铍的工艺,特别是高氟铍矿生产工业氧化铍的方法,介绍了水口山工业氧化铍的生产状况。 相似文献
4.
5.
全俊 《稀有金属与硬质合金》2006,34(2):61-63
通过对工业氧化铍生产过程中的沉淀、碱洗、煅烧等工序的工艺操作和技术条件的调整控制,同时加强对比表面积、松装密度及灼失等技术指标的检测,产出的工业氧化铍能满足铍铜母合金生产的需要。 相似文献
6.
成泉辉 《稀有金属与硬质合金》2004,32(3):49-52
分析了高氟铍矿中的氟在工业氧化铍冶炼中的行为和影响,提出了减少和消除这些不利影响的措施,以降低工业氧化铍冶炼成本,提高金属回收率.减少环境污染。 相似文献
7.
8.
成泉辉 《稀有金属与硬质合金》1999,(4):49-53
综述了从硅铍钇矿中提取工业氧化铍及混合稀土的工艺,介绍了硅铍钇矿经硫酸浸出后,利用稀土复盐和草酸沉淀稀土,使铍和稀土得到有效分离的机理。生产中已分别获得了混合氢氧化稀土和工业氧化铍。 相似文献
9.
10.
11.
12.
雷湘 《有色金属(冶炼部分)》2019,(10):30-32
高氟铍矿石中的成分复杂,其中氟、磷、硅、铝、铁等杂质在传统法工艺中对氧化铍的回收率及质量影响很大;萃取法生产氧化铍过程中,P204对铍浸出液中的阳离子进行交换,浸出液中的阴离子氟、硅、磷等基本不被萃取;利用阳离子在P204中的萃取顺序,将铁还原成二价铁,并在还原气氛中减少铝铁与铍同萃机会。同时高氟铍矿石中的氟与铝的络合作用可抑制铝的萃取,萃入有机相中的铝铁经洗涤后基本可除去。洗后的有机相经反萃、水解沉淀、煅烧得到合格的工业氧化铍。 相似文献
13.
A. V. Babun I. M. Neklyudov V. M. Azhazha K. V. Kovtun A. A. Vasil’ev G. G. Bobylev 《Powder Metallurgy and Metal Ceramics》2006,45(3-4):207-213
For the first time in the production of construction beryllium an integrated technology for the production of a new generation
of high-purity isotropic materials has been developed and mastered. The technology combines processes of vacuum distillation
of the metal, gas flow atomization of a melt, specialized processing of the powder prior to densification and hot isostatic
pressing. A technology for the production of spherical powders of beryllium and beryllium-based alloys by atomization of a
melt is also developed and employed for the first time. A technology is developed and optimal conditions of isostatic pressing
of spherical powders are determined. Isotropic beryllium with high physico-mechanical characteristics is obtained. The properties
of the materials thus obtained are studied. The strength of the new materials is 20%, and their plasticity two to three times
greater, than commercial beryllium. It is shown that the high purity of the initial powder, the cellular structure, uniform
distribution, and dispersity of the particles of beryllium oxide and segregations of secondary phases are the principal factors
that govern the level of the properties of compact beryllium materials.
__________
Translated from Poroshkaya Metallurgiya,Nos. 3–4(448), pp. 118–125, March—April, 2006. 相似文献
14.
A comprehensive review of the extractive metallurgy of beryllium is presented. Due to the strategic importance and element of secrecy surrounding the metal, any open literature on beryllium is rather limited. However, this review has been made to cover all important aspects of beryllium extraction technology namely, resources of the metal; processing of ores; reduction of fluoride and oxide to get metal and alloy; refining of the metal; post preparation processes to shape metal through powder metallurgical route and preparation of foils and ceramics. Special attention has been given to the topic of toxicology and pollution control. Recycling of beryllium will form the concluding section. Information on the removal of impurities during the preparation of intermediate products as well as during reduction to metal and its alloys are described with process principles. Thus this review, with the help of discussion on each unit process and at the same time emphasising on the problems faced in large scale handling of this toxic metal and its compounds, shall provide substantial information presently available on the extractive metallurgy of beryllium. 相似文献
15.
Abstract A comprehensive review of the extractive metallurgy of beryllium is presented. Due to the strategic importance and element of secrecy surrounding the metal, any open literature on beryllium is rather limited. However, this review has been made to cover all important aspects of beryllium extraction technology namely, resources of the metal; processing of ores; reduction of fluoride and oxide to get metal and alloy; refining of the metal; post preparation processes to shape metal through powder metallurgical route and preparation of foils and ceramics. Special attention has been given to the topic of toxicology and pollution control. Recyclfng of beryllium will form the concluding section. Information on the removal of impurities during the preparation of intermediate products as well as during reduction to metal and its alloys are described with process principles. Thus this review, with the help of discussion on each unit process and at the same time emphasising on the problems faced in large scale handling of this toxic metal and its compounds, shall provide substantial information presently available on the extractive metallurgy of beryllium. 相似文献
16.
介绍了惯性器件用铍材微屈服强度(MYS)的研究概况、测试方法,讨论了晶粒尺寸、杂质(主要是BeO)、热处理与微合金化等对铍材MYS的影响。结果表明,采用粒径细小低氧化铍的冲击研磨粉末和等静压固结工艺是获得高MYS铍材的重要途径。 相似文献