电炉钛渣制备高品位人造金红石的试验研究

Experimental Study on Preparing High Grade Synthetic Rutile with Titanium Slags

以云南某地两种不同性状电炉冶炼钛渣为原料,对氧化还原-流态化酸浸和活化焙烧-洗硅-流态化酸浸两种高钛渣制备人造金红石的工艺路线进行了试验研究,并通过XRD、SEM分析等手段探讨了氧化还原和活化焙烧对高钛渣改性的机理。试验结果表明,低硅含量的电炉钛渣采用氧化还原-流态化酸浸工艺可获得符合沸腾氯化钛白原料要求的人造金红石;采用活化焙烧-洗硅-酸浸工艺可得到TiO2品位97%的细粒级人造金红石。

Using two different electric furnace titanium slags in Yunnan Province as raw materials, experimental study was carried out on preparing synthetic rutile with two electric furnace titanium slags obtained by redox-fluidized bed acid leaching and activated roasting-silicon removing-fluidized bed acid leaching. The modification mechanism of titanium slags by redox and activated roasting was investiigated by XRD and SEM. The results show th^at synthetic rutile obtained from low silicon-content electric furnace titanium slags by redox-fluidized bed acid leaching process can meet the raw material requirement for fluidized chloridization of titanium white. Fine synthetic rntile with the grade of TiO2 97% can be obtained by activated roasting-silicon removing-acid leaching process.