加拿大冶金专家发明的这种新工艺仍用传统的高炉作为反应容器,通过风口喷入非炼焦煤达吨铁300kg以上,使焦比降到200kg以下,接近维持炉内料柱必要透气性的最少焦炭用量值,获得以煤代焦的重大进展。可使高炉的生产能力提高1倍以上。 新工艺采用部分炉顶煤气再循环的方法,即把高炉煤气经过碳丙脂吸附处理后脱除其中的CO_2和水;然后一部分煤气作为喷吹煤粉的载气,与鼓入的常温氧气混合。使风 The new process invented by Canadian metallurgical experts still uses the traditional blast furnace as the reaction vessel and injects over 300kg of non-coking coal up to 300kg through the tuyere to reduce the coke ratio below 200kg, which is close to the minimum required to maintain the gas column in the furnace Coke value, access to coal on behalf of the great progress of coke. Blast furnace production capacity can be more than doubled. The new process uses part of the top gas recirculation method, that is, the blast furnace gas through the carbon propyl adsorption removal of the CO 2 and water; and then part of the gas as pulverized coal injection carrier gas, mixed with the bubbling oxygen at room temperature . Make the wind