Metallurgical apparatus – With control means responsive to sensed condition – By treated material sampling means
Patent
1993-12-08
1995-04-04
Andrews, Melvyn J.
Metallurgical apparatus
With control means responsive to sensed condition
By treated material sampling means
266 87, 266144, 266145, 266160, C21B 1312
Patent
active
054029902
ABSTRACT:
This invention provides a method and appratus whereby steel of various compositions may be produced from iron ore and coal through a series of stages without the intermediate production of liquid iron. A reforming reactor receives top gases from the steel making reactors, and converts them to high reduction potential gases which are returned to the steel making reactors. The iron ore and reductants, such as coal, are charged to a controlled atmosphere reactor which may be an inclined rotary cylindrical shaft. From the controlled atmosphere reactor the charge is moved to a potential shift reactor which is inclined or vertical and encounters increasing heat and rising gases for converting the carbonised sponge into a semi-molten state. The charge then passes to a high temperature reactor where it encounters the reducing gases from the reforming reactor and preheated oxygen to create temperature in which steel is made. Hot gases from the high temperature reactor pass through the PSR and the CAR and are returned to the reforming reactors to complete the cycle.
REFERENCES:
patent: 4805880 (1989-02-01), Hauk et al.
patent: 5151243 (1992-09-01), Auer et al.
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