Practice with the operation of the SISG No. 4 BF showed that the production was increased by 3.41%, and the coke rate decreased by 1.38%, as the furnace top pressure was raised by 10 kPa.

• 韶钢 4号高炉生产实践表明炉顶压力每提高 1 0Kpa ；可增产 3.；41 2%25；降低焦比 1