固体废弃物在竖炉球团生产中的应用

Application of Solid Waste in the Shaft Furnace Pellet Production

济钢球团厂通过添加炼钢污泥同比代替铁矿精粉,降低皂土消耗,用量达60 kg/t,年增经济效益4 000多万元;通过添加氧化铁皮,改善物料焙烧性能,降低煤气消耗6 m3/t,年降成本600余万元;通过添加炼钢精炼渣,拓宽了球团矿原料的使用范围,提高球团矿CaO含量和碱度,降低原料成本。

By appending steelmaking sludge instead of the same proportion of iron ore fines for reducing bentonite consumption, the amount reached 60 kg/t. Then Jinan Steel Pellet Plant increased the benefit of 40 million above per year. The roasting properties of the materials were improved by adding oxide scale, reducing gas consumption 6 m^3/t and the cost of more than 6 million annual. The application range of the raw materials for pellet was winded by the addition of refining slag, increasing CaO content and the basicity of the pellet and reducing the cost of the raw materials.