攀枝花钛渣熔盐氯化特性研究

Investigation on Chlorination Characteristics of Panzhihua Titanium Slag in Molten Salts

开展了攀枝花74%品位钛渣、78%钛渣和85%钛渣的化学成分、物相及矿物结构研究,考察了三种钛渣熔盐氯化时反应差异、放热量差异和氯化系统热平衡控制差异。研究表明:74%渣、78%渣和85%渣在物相组成上无较大差异,但黑钛石、金红石及其过渡相含量存在差异,导致74%渣熔盐氯化放热量比78%渣多21.9%、85%渣熔盐氯化放热量比78%渣少9.9%,氯化炉热平衡计算所需的返炉矿浆量与实际氯化应用所需矿浆量结果一致。

The chemical compositions, phase compositions and mineral structures of Panzhihua titanium slags with 74% , 78% and 85% grade were respectively studied in this paper, mainly focusing on the differences of chemical reactions, heat release and system heat balance control in molten salts chlorination process for the 3 mentioned titanium slags. It is indicated that there is no significant difference in phase compositions for the titanium slags, while the contents of anosovite, rutile and transition phase for the slags are different which leads to 21.9% of heat release less than 74% titanium slag and 9.9% of heat release more than 85% titanium slag, respectively compared with 78% titanium slag in molten salts chlorination. The amount of ore pulp back to the furnace based on the thermal equilibrium calculation for the chlorina- tion furnace, coincides with the practical application in chlorination process.