含钛高炉渣直接提取Ti5Si3及杂质去除机理

Direct Extraction of Ti5Si3 Alloy from Ti-Bearing Blast Furnace Slag and the Removal Mechanism of Impurities

摘要:

采用固体透氧膜可控氧流冶金技术，利用含钛高炉渣成功提取出Ti5Si3合金粉末。SEM、XRD和EDX分析表明：含钛高炉渣中Ca、Mg、Al等金属杂质得以有效去除，获得的Ti5Si3相具有与直接电解钛硅混合氧化物（摩尔比TiO2:SiO2=5:3）产物相似的微观形貌及物相组成。同时对熔盐电解过程的杂质去除机理进行了分析。

Abstract:

Ti5Si3 alloy powders were extracted from Ti-bearing blast furnace slag by solid oxygen ionic membrane controlled oxygen flow metallurgy technology. XRD, SEM and EDX analyses show that calcium, magnesium and aluminum impurities are effectively removed during electrolysis. The products Ti5Si3 from Ti-bearing blast furnace slag have similar microstructure and components with the products from the electrolysis of the mixture of TiO2-SiO2 powder (TiO2:SiO2=5:3). The removal mechanism of impurities was analyzed.