| 摘要 |
PROBLEM TO BE SOLVED: To blow different solid and gas fuels into a tuyere respectively without increasing a cross section of a blast furnace tuyere lance.SOLUTION: In a blast furnace operation method, different fuels are blown into a tuyere of a blast furnace from each of tubular holes by using a blast furnace tuyere lance having a first pipe which tubular holes not less than 2 extending to a longer direction are formed. |
