Electrolytic Extraction of Beryllium
Electrolytic Extraction of Beryllium
复制标题
电解萃取铍
DOI：
10.1080/08827509408914106
复制
发表时间：
1994
影响因子：
5
通讯作者：
D. Olson
中科院分区：
文献类型：
--
作者：
B. Mishra;D. Olson
铍具有某些独特的机械和物理性能，使其成为一种特殊的工程材料和重要的合金添加剂。然而，它的低密度、高反应性和高熔点，以及以非常稳定的绿柱石矿石形式存在（仅含约 5% 铍），使其提取变得困难。从熔融铍和氯化钠盐混合物中电解提取铍是一种低温商业工艺。在熔盐电解之前将绿柱石矿石转化为氧化铍，并采用多种纯化技术来生产高纯度金属铍。本文回顾了现有的铍生产主要工业流程。建议采用类似原理的改进的氯化铍-氟化铍熔盐电解，但具有半连续高效工艺的额外优势。基于反应速率理论和影响因素，对该盐体系的电极反应进行了分析。
Beryllium possesses certain unique mechanical and physical properties which make it a special engineering material and an important alloy addition. However, its low density, high reactivity and high melting point along with its occurrence in the form of a very stable beryl ore—containing only about five percent beryllium—make its extraction difficult. The electrowinning of beryllium from molten beryllium and sodium chloride salt-mix is a low temperature commercial process. Conversion of beryl ore into beryllia precedes the fused salt electrolysis and several purification techniques are followed to produce high purity beryllium metal. This paper reviews the existing major industrial processes for beryllium production. A modified beryllium chloride-beryllium fluoride fused salt electrolysis is suggested on similar principles but with added advantage of a semi-continuous high efficiency process. The electrode reactions for this salt system have been analysed on the basis of reaction rate theory and the influ...