太钢峨口球团焙烧特性的研究

A STUDY ON BAKING PROPERTY OF EKOUPELLET IN TAIYUAN STEEL COMPANY

采用二次回归通用旋转设计对太钢峨口球团的焙烧特性进行了研究．研究表明，磁铁矿球团焙烧时，预热温度和焙烧温度之间有明显的交互作用，在１２５０℃左右焙烧时，预热温度对成品球强度影响较小；＞１２５０℃焙烧时，成品球强度随着预热温度的提高而提高；＜１２５０℃焙烧时，则随着预热温度的提高而降低．在竖炉生产中，不能获得很高的焙烧温度，因此，宜采用较低的预热温度，这样可在较宽的操作范围内获得高强度的球团．

おhe baking property of Ekou pellet was studied with quadratic regress and common rotating design mathematical model in this paper. The research indicates that there is an obvious mutualinteraction between preheating temperature and baking temperature in the baking process of magnetite pellet. When baked at about 1250 ℃, the preheating temperature has little effect on the fired pellet strength; when the temperature is above 1250 ℃, the increase of preheating temperature will cause higher fired pellet strength, and when the temperature is under 1250 ℃, the fired pellet strength will decline along with the increase of preheating temperature. In shaftkiln production, there is a limit of baking temperature, so lower preheating temperature is appropriate to get pellet with high strength in a wide operating range.