Reduction of iron ore metal and reactor for said reduction
AssigneeLuossavaara-Kiirunavaara AB
InventorsShabbir Taherbhai LAKDAWALA, Kamesh Sandeep Kumar TELKICHERLA
Life of this patent
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Abstract
Reduction reactor and process of effecting reduction of iron ore material to reduced iron material. The process includes feeding iron ore material into a reduction reactor at a top portion thereof, creating a gravitational flow of the material in the reduction reactor from the top portion, axially downwards towards a bottom portion of the reduction reactor; feeding a heated reduction gas into the reduction reactor at the top portion of the reduction reactor, such that the reduction gas creates a co-current flow with the gravitational flow of the material in the reduction reactor; and by means of the reduction gas reducing the iron ore material to reduced iron material in the reduction reactor.
Claims9
A process of effecting reduction of iron ore material in the form of iron ore pellet and/or iron ore agglomerate to reduced iron material, the process comprising:
- providing a reduction reactor;
- feeding iron ore material having a temperature of 100-1300° C. into the reduction reactor at a top portion thereof, creating a gravitational flow of a packed bed of iron ore material descending in the reduction reactor from the top portion, axially downwards towards a bottom portion of the reduction reactor;
- feeding heated reduction gas into the reduction reactor at the top portion of the reduction reactor, such that the heated reduction gas creates a co-current flow with the gravitational flow of the iron ore material in the reduction reactor;
- reducing the iron ore material to reduced iron material by the heated reduction gas in the reduction reactor;
- removing spent reduction gas from the reduction reactor at a gas outlet at a lower section of the reduction reactor;
- and
- removing reduced iron material from the reduction reactor at the bottom portion thereof.
A reduction reactor for reduction of iron ore material in the form of iron ore pellet and/or iron ore agglomerate to reduced iron material, the reduction reactor comprising:
- a material entry arranged at a top portion of the reduction reactor configured for feeding of iron ore material having a temperature of 100-1300° C. into the reduction reactor;
- a gas entry arranged at the top portion of the reduction reactor, configured for feeding of heated reduction gas into the reduction reactor;
- wherein the reduction reactor, the material entry and the gas entry are arranged such that material fed through the material entry creates a gravitational flow of a packed bed of iron ore material descending in the reduction reactor, and reduction gas fed through the gas entry creates a co-current flow with the gravitational flow of the material in the reduction reactor from the top portion axially downwards towards a bottom portion of the reduction reactor, such that the iron ore material is reduced in the reduction reactor;
- a gas outlet arranged at a lower section of the reduction reactor, configured for removal of spent reduction gas from the reduction reactor, and a material exit arranged at a bottom portion of the reduction reactor, configured for removal of reduced iron material from the reduction reactor.
Dependencies are inferred from the claim text.