Abstract

Based on the current production technology of sulfate process titanium dioxide, this paper discusses the experimental study on preparation of titanium-rich materials by pressure leaching of titanium concentrate from titanium white waste acid, which combines the comprehensive utilization of titanium white waste acid with the production of titanium-rich material, and studies the effects of acid-ore ratio, leaching temperature and time on the grade of titanium-rich materials. The results showed that the titanium-rich materials in a TiO₂ grade of above 80% could be obtained under the conditions of 8 ml: 1 g acid-ore ratio, 150 °C acid leaching temperature and 7–8 hours acid leaching time. In addition, XRD analysis shows that after completion of acid leaching, FeTiO₃, the main phase in titanium concentrate, has been converted into TiO₂ phase in titanium-rich materials.

摘要

本文以目前硫酸法钛白粉的生产工艺为基础，探讨了钛白废酸的综合利用与钛白废酸的综合利用相结合的钛精矿加压浸出制备富钛材料的实验研究。研究了酸矿比、浸出温度和时间对富钛材料品位的影响。结果表明，富钛材料在的TiO ₂的80％以上能级8毫升条件下获得：1克酸矿石比，150℃酸浸温度和7-8小时酸浸时间。此外，XRD分析表明，酸浸完成后，FeTiO ₃钛精矿中的主要相，已在富钛材料中转化为 TiO ₂相。