Abstract

The process of reducing plasma-arc smelting of titanium raw materials from the Yarega deposit aimed at refining it from silicon has been studied. The smelting was performed in a water-cooled metal-graphite reactor, consisting of a copper cylindrical chamber with a diameter of 100 mm and a graphite bottom insert with a thickness of 30 mm serving as the anode of the arc. A hollow graphite cathode through the channel of which a mixture of quartz-leucoxene with graphite was supplied to the region of the anode spot was installed in the upper part of the chamber. In the course of quartz-leucoxene melting, silicon dioxide SiO₂ contained therein was reduced to SiO with the evaporation thereof, thus enriching the melt in titanium. The arc power amounted to 13 kW. The experimentally measured parameters of the temperature field and the current density in the anode spot and in the arc column are in good agreement with the results of calculations made under the assumption that the arc occurring on the quartz-leucoxene anode acts as a heat source with approximately uniform heat flux density.

中文翻译：

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金属-石墨反应器中还原还原白铜精矿时等离子弧阳极区的热物理参数

摘要

已经研究了减少旨在从硅精制的Yarega矿床中钛原料的等离子弧熔炼工艺。熔炼在水冷金属石墨反应器中进行，该反应器由直径为100 mm的铜圆柱腔和厚度为30 mm的石墨底部插入物组成，用作电弧的阳极。在腔室的上部安装有空心石墨阴极，通过该空心阴极将石英-次氯烯与石墨的混合物供应到阳极斑点的区域。在石英-白二烯熔融过程中，二氧化硅SiO ₂通过蒸发使其中所含的金属还原为SiO，从而使熔体富集钛。电弧功率总计为13 kW。实验测量的温度场参数以及阳极点和弧形柱中的电流密度与假设石英-次二甲苯阳极上产生的弧形作为热源的计算结果非常吻合。大致均匀的热通量密度。