摘要
矿壳球团在带式焙烧机上焙烧还原是一种投资少、成本低的生产高炉金属化球团的直接还原法。本文从理论上分析了矿煤球团用铁精矿（加添加剂）包壳所具有的优点，并介绍在实验室研究矿壳球团的配碳量、用铁精矿包壳时添加剂种类和用量、最高还原焙烧温度和升温速度、还原焙烧气氛等因数对金属化球团强度和金属化率的影响。
Reduction of enveloped pellets by roasting on the belt roaster in a direct reduction process with less investment and lower cost in producing blast furnace metalized pellets. This paper gives a theoretical analysis of the advantages with the pellets enveloped by iron-concentrate mixed with coal (plus additives),and introduces the authors'laboratory research as to the factors affecting on the strength and metalization rate of the metalized pellets,such as the amount of carbon-burden for the pellets, the kinds and doses of the additives in enveloping with iron concentrate,the maximum temperature,temperature raising speed,and atmosphere of reduction roasting.
基金
湖北省自然科学基金
关键词
矿壳
内配碳球团
预还原
球团
envelope
carbon-burdened pellet
prereduction
