摘要
含钛高炉渣的综合利用一直是重要的研究课题。为了使渣中的钛氧化物经还原氮化处理后转变为氮化钛,并使其颗粒长大,以便进行冶金选矿,将含钛高炉渣配加石墨粉并通氮气,在1360～1480℃的温度区间进行还原氮化处理,然后观察氮化钛的形态特征及颗粒的大小。结果表明:该工艺可使炉渣中的钛选择性地富集于氮化钛相;另外,改变工艺条件可促使氮化钛颗粒长大。
Utilization of blast furnace slag bearing titanium is a key project. A new approach to utilizing the slag has been developed. And the purpose is to form TiN through carbon-thermal reduction nitridation of titania in slag. The grain grows up during this process which is beneficial ore dressing. The slag was processed by reacting with graphite powder and nitrogen at temperature ranging from 1 360 to 1 480 ℃. And the character of morphology and grain size of TiN were inverstigated. The results show that the dispersed titanium compounds could be enriched selectively in TiN phase during the process. The grain of TiN would grow up by adjusting process conditions.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2005年第3期15-17,29,共4页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(50034010)
关键词
高炉渣
钛
碳热还原
氮化
氮化钛
blast furnace slag
titanium
carbon-thermal reduction
nitridation
TiN
