铬铁矿在熔融滴下过程中的还原机理

钢铁研究学报, 2003, 15(6): 4-32.

1.上海大学上海市钢铁冶金重点实验室,上海,200072

2.上海大学上海市钢铁冶金重点实验室,上海,200072

3.上海大学上海市钢铁冶金重点实验室,上海,200072

4.上海大学上海市钢铁冶金重点实验室,上海,200072

5.上海大学上海市钢铁冶金重点实验室,上海,200072

6.上海大学上海市钢铁冶金重点实验室,上海,200072

7.上海大学上海市钢铁冶金重点实验室,上海,200072

基金项目: 国家自然科学基金(50174036)

Reduction Mechanism of Chromite Ore during Smelting Dropping

为了探讨铬铁矿的熔融还原机理,利用光学显微镜、电子扫描显微镜和能谱分析技术,观察分析熔融滴下实验中不锈钢母液炉料滴下物的结构形态变化.结果表明,还原过程可分为两个阶段:首先是铬铁矿通过CO气体的间接还原,其还原机理可用未反应核模型解释;其后是铬铁矿逐步在渣相中溶解,被固体碳直接熔融还原.

[1]	Kekkonen M;Xiao Yan-ping;Holappa L.Kinetics Study on Solid State Reduction of Chromite Pellets[A].Norway:Norweigian Fer-roalloy Research Organization (FFF) SINTEF Materials Tech-nology,1995:351-360.
[2]	Niayesh M J.铬铁矿固态还原[J].铁合金,1994(03):49-55.
[3]	Katayama H G;Tokuda M .Effect of Gases on the Reduction ofChromium Ore Pellet Containing Carbonaceous Material[J].Tetsu To Hagane-Journal of the Iron and Steel Institute of Japan,1985,71(14):1607-1614.
[4]	Neuschutz D;Janben P;Friedrich G.Effect of Flux Addit-ions on the Kinetics of Chromite Ore Reduction with Carbon[A].Norway:Nor-weigian Ferroalloy Research Organization (FFF) SINTEF Ma-terials Technology,1995:371-381.
[5]	Weber P;Eric R H .The Reduction Mechanism of Chromite inthe Presence of a Silica Flux[J].Metallurgical and Materials Transactions,1993,24:987-995.

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