炉料金属化率对富氧喷煤高炉冶炼过程的影响

Effect of Metallization Degree of Burden on Ironmaking Operation of BF with Oxygen Enriched Blast and Coal Injection

根据高炉物料平衡和区域热平衡理论 ,参照高炉富氧喷煤和使用金属化炉料的冶炼结果 ,计算了炉料金属化率对富氧喷煤率、焦比和产量的影响。结果表明 :1炉料金属化率达到 40 %后 ,高炉不能富氧操作 ;2较低的炉料金属化率与富氧喷煤相结合 ,能够获得更大的喷煤比和更高的产量 ;3使用金属化率较高的炉料 。

According to material and local heat balance in the blast furnace, refering to the result of oxygen enriched blast and coal injection into blast furnace and use of metallized burden, the influence of burden metallization degree on oxygen enriched coal injection rate、 coke rate and productivity is calculated. It shows that ① with a metallization degree of burden more than 40 per cent, blast furnace can ′t be operated with oxygen enriched blast. ② combining lower burden metallization degree with oxygen enriched blast and coal injection, higher coal injection rate and higher productivity can be obtained. ③ by use of higher burden metallization degree lower coke rate can be obtained than oxygen enriched blast and coal injection.