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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >A critical evaluation of processes to produce primary titanium
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A critical evaluation of processes to produce primary titanium

机译：对生产原钛的工艺的严格评估

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Over the last 60 years many different processes were conceived to reduce the cost of titanium produced by the Krofl process. However, success eluded all previous efforts, which were consequently terminated in periods of economic downturn. Recently, the growth in demand for titanium and the high cost of producing the metal again sparked renewed attempts in various parts of the world to replace the antiquated Kroll process with a more efficient route. The different options to produce titanium are reviewed, classified and evaluated in terms of the fundamentals underlying the technologies, and it is shown that the options considered to be the most likely to replace the Kroll process, are continuous processes to reduce TiCl_4 metallo-thermically to titanium powder. Of these, continuous magnesio-thermic reduction of TiCl_4 would conceptually result in the lowest-cost and highest-value product. However, when considering by-product salt removal from the titanium product and recycling of the salt as well, sodio-thermic reduction of TiCl_4 is better.
机译：在过去的60年中，构想了许多不同的工艺来降低Krofl工艺生产的钛的成本。但是，成功之前没有进行过所有努力，因此，在经济下滑时期这些努力被终止了。最近，对钛的需求增长和生产这种金属的高昂成本再次激发了世界各地重新尝试以更有效的途径代替过时的Kroll工艺的尝试。根据技术的基本原理对生产钛的不同选择进行了审查，分类和评估，结果表明，被认为最有可能替代Kroll工艺的选择是连续的工艺，通过金属热法将TiCl_4还原为金属。钛粉。其中，TiCl_4的连续磁热还原将在概念上产生最低成本和最高价值的产品。但是，当考虑从钛产品中去除副产物盐和盐的循环利用时，TiCl_4的热还原效果更好。

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