| 摘要 |
PROBLEM TO BE SOLVED: To provide a converter blowing top-blow lance capable of improving secondary combustion ratio. ! SOLUTION: A converter blowing top-blow lance 1 generates interference between adjacent two jets, and suppresses reduction of a side surface area of a jet by preventing condensation of all jets to one, and includes a nozzle part 1a by having plural nozzles A, A'. In the converter blowing top-blow lance 1, in the respective nozzles A, A', in a right hand system xyz orthogonal coordinate system in which outlets 3 of the nozzles A, A' are positioned on a positive side on an x-axis, a central axis of the converter blowing top-blow lance 1 is a z-axis, a positive direction of the z-axis is an upstream side of top-blow gas jetted from the outlets of the nozzles A, A', when an angle formed by a projection line of the central axis of the nozzles A, A' to an xy plane and the x-axis is α, the nozzle A having the α angle and the nozzle A' having -α angle are alternately disposed so that the respect |
