Process for improving the use of heat in steel production from s

Details Process for improving the use of heat in steel production from s Process for improving the use of heat in steel production from s

1980-12-10

1982-11-02

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 51, 75 52, 75 59, C21C 700

Patent

active

043571603

ABSTRACT:
A method of heating solid, iron-containing materials in a steel-making converter which includes one or more injection nozzles in a lower nozzle plane and one or more injection nozzles in an upper nozzle plane, the nozzles in each plane being capable of supplying carbonaceous fuels and/or oxygen gas into the converter; the method including supplying fluid carbonaceous fuels (oil and/or gas) and oxygen gas through all the injection nozzles to the interior of the converter so that the fuels will burn and preheat the solid, iron-containing materials, these materials eventually forming a melt at the bottom of the converter; stopping the supply of fluid carbonaceous fuels and instead supplying pulverized carbonaceous fuels through the injection nozzles in the lower nozzle plane once the formed melt has a sufficient depth that it contacts the injection nozzles in the lower nozzle plane, stopping the supply of fluid carbonaceous fuels through the injection nozzles in the upper nozzle zone and the supply of pulverized carbonaceous fuels through the injection nozzles in the lower nozzle zone once the formed melt has a sufficient depth that it contacts the injection nozzles in the upper nozzle zone, and supplying oxygen gas (with from time to time, carbonaceous fuels) to the melt from all the nozzles.

REFERENCES:
patent: 3953199 (1976-04-01), Michaelis
patent: 4089677 (1978-05-01), Spenceley
patent: 4195985 (1980-04-01), Brotzmann
patent: 4198230 (1980-04-01), Brotzmann

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