| 摘要 |
PURPOSE:To obtain sintered ore at a higher efficiency, by arranging sintering fuel in which heat resisting material is coated on a surface of cokes fines to raise the firing level, into sintering material to raise firing temp. of cokes fines and improving aeration due to reduction of heating zone. CONSTITUTION:Cokes lines after crushing are coated singly or combiningly with heat resisting material such as cement, dolomite, MgO fines by using kneader having coating function such as bag mill. Next, the coating treated cokes fines are arranged uniformly by 2-3% in sintering material composed mainly of e.g. 4% pellet feed, 80% iron ore fines, 10% quick lime. As the result, firing temp. of coated cokes is raised by about 50-100 deg.C compared with conventional cokes fines. In this way, decrease of fuel unit due to increase of combustion efficiency of fuel cokes, improvement of aeration due to reduction of red heating zone, improvements in quality and productivity due to increase of combustion rate, are achieved.
|
