马钢链箅机-回转窑氧化球团试验研究

基于马钢球团原料条件,在模拟试验装置中研究了链箅机-回转窑氧化球团生产的料层高度、鼓风干燥热风温度、抽风干燥热风温度、预热热风温度和回转窑焙烧等工艺参数。在配用40%(质量分数)赤铁精矿时,采用最佳链箅机-回转窑工艺参数条件下,获得了冶金性能良好的成品球团矿,主要指标为:单球抗压强度3 113 N,转鼓强度93.16%,抗磨指数2.00%,w(TFe)63.64%,w(FeO)1.62%。

Experimental study on grate-kiln oxidized pelletizing process at Ma Steel

Based on the raw material conditions of pelletizing process at Ma Steel the process parameters,such as bed depth of grate,temperatures of updraught drying,downdraught drying,preheating and roasting in oxidized pellet production were studied with a grate-kiln simulator.When the process parameters were in the optimal ranges and the proportion of hematite concentrate was 40%,quality pellet with high metallurgical properties were obtained.The indexes of fired pellet were as follows: cold compression strength 3113N,tumbler strength( 6.3mm) 93.16%,abrasion index(-0.5mm) 2.00%,TFe 63.64% and FeO 1.62%.