摘要
在铁矿石烧结过程中,固体燃料的种类和质量配比对烧结矿的化学成分、矿物结构和矿物组成以及冶金性能都有明显的影响。本文以混匀铁矿石为原料,研究了焦粉、良乡煤和朝鲜煤三种固体燃料对烧结矿质量的影响,旨在合理利用固体燃料资源和降低生产成本。结果发现,在等热值条件下,焦粉有利于改善烧结矿的中温还原性能,但恶化其低温还原粉化性能,而两种煤粉做固体燃料可以增加烧结矿总的交织-熔蚀结构,对改善烧结矿的冷态强度和低温还原粉化性能比较有利。
In iron ore sintering process, there are some effects on chemical composition, mineral structure and constituent,metallurgical properties of sinter with the changing of types and ratio of solid fuel. In order to use resonably fuel resources and reduce cost of manufacture, the effects of three solid fuels （coke powder, Liangxiang coal and Korea coal）on sinter properties were studied with the iron ore blender as the iron-contained materials. Results shown that the reducibility at 900℃ was slightly improved and the low temperature reduction degradation index was worsened with the coke powder as the solid fuel relative to coal powder under the equal calorific value condition. However, with the coal powder as the solid fuel, the coal mechanical strength and low temperature reduction degradation index was improved because more interweaving corroded structure formed in sintering process.
出处
《矿产综合利用》
CAS
2014年第2期29-32,共4页
Multipurpose Utilization of Mineral Resources
基金
河北省高等学校科学研究计划项目(Q2012076)
关键词
固体燃料种类
烧结矿
矿物结构
冶金性能
煤
焦炭
Solid fuel type
Sinter
Mineral structure
Metallurgical property
Coal
Coke
