摘要
钛精矿流态化氢气还原生产高钛渣技术不仅原料选择范围广、能耗低,而且可实现清洁生产。在冷态试验基础上对钛精矿在高温下先氧化再还原试验进行了探索,研究了温度、还原时间、p(N2)/p(H2)和粒度对金属Fe还原率的影响。试验结果表明:800～950℃,随着还原温度的升高,Fe的金属化率有较明显的增加;在同一温度下,Fe的金属化率随时间延长先快速增加而后趋缓;随着粒径的减小,钛精矿的Fe还原率提高较明显;氢气的浓度对钛精矿还原影响至关重要,随着氢气浓度的增加,还原率有着明显的提高。
Using bed can not only ilmenite as raw materials to produce titanium slag by hydrogen reduction in the fluidized expand sources of raw materials and lower energy consumption, but also realize cleaner production. On the basis of cold test, preoxidation and hydrogen reduction of ilmenite in the fluidized bed was studied and effects of temperature, reduction time, particle size of ilmenite and the pressure of H2 on metallization of Fe were investigated. The results indicate that metallization of Fe increases markedly with the rise of reduction temperature between 800 ℃ and 950 ℃ ; metallization of Fe increases rapidly at the beginning and then tends to slow down under the same reduction temperature; metaUization of Fe inereases remarkably with the decrease of particle size of ilmenite; the concentration of H2 has so strong an effect on the metallization of Fe that the reduction rate rises dramatically with higher concentration of H2.
出处
《钢铁钒钛》
CAS
北大核心
2012年第2期15-19,共5页
Iron Steel Vanadium Titanium
基金
四川省科技支撑计划资助课题(2008GZ0244)
关键词
钛精矿
流态化
氧化
氢气还原
ilmenite
fluidization
oxidization
hydrogen reduction
作者简介
谭亮（1986-），男，四川成都人，硕士，主要从事钢铁冶金领域的设计与研究工作。
