根据高炉喷吹用煤的技术条件,选择适宜的煤种与潞安贫煤、贫瘦煤进行实验室混合煤喷吹试验,在试验的基础上确定混合煤的配比和粒度组成等工艺参数,为大幅度地提高高炉煤比创造条件。结果表明:首选煤是府谷鸿运煤,合理配比为30%~40%,其次是大同晋华宫煤,合理配比在40%左右;混合煤粉的适宜粒度为60%~70%。 According to the blast furnace coal injection technical conditions, select the appropriate coal and Lu lean coal, lean coal laboratory mixed coal injection test, based on the test to determine the ratio of mixed coal and particle size composition and other process parameters , To greatly improve the blast furnace coal ratio to create the conditions. The results show that the preferred coal is Fugu coal with a reasonable proportion of 30% -40%, followed by Datong Jinhuagong coal with a reasonable proportion of 40% and the suitable particle size of the mixed coal is 60% -70%.