Partial reduction of particulate iron ores and cyclone reactor
An apparatus for iron or ferro-alloy smelting is described, comprising: bath smelter means for containing a smelting bath for reductive bath smelting of iron or ferro-alloy ore by coal/oxygen injection through use of endothermic nozzles directed into a smelting bath to form liquid iron or steel; a closed cyclone reactor having an upper end including an inlet end, said closed cyclone including an open lower exit positioned above the smelting bath within the bath smelter means; feed means for directing a continuous stream of fine ore particles into the cyclone reactor; and gas supply means for tangentially directing streams of oxygen, with or without air, and a fuel gas selected from the group consisting of producer gas, natural gas and methane for burning within the cyclone reactor to maintain the interior and contents of the cyclone reactor at an elevated temperature; the equilibrium partial pressure ratio of carbon monoxide to carbon dioxide exiting the cyclone reactor being maintained at a value sufficient to cause the melted ore at the elevated temperatures within the cyclone reactor to be partially reduced during the particulate residence time within the cyclone reactor.
- Assignee:
- Idaho Research Foundation, Inc., Moscow, ID (United States)
- Patent Number(s):
- US 5228901; A
- Application Number:
- PPN: US 7-660778
- OSTI ID:
- 6381736
- Resource Relation:
- Patent File Date: 25 Feb 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
IRON ORES
SMELTING
NATURAL GAS
COMBUSTION
PRODUCER GAS
SMELTERS
DESIGN
CARBON DIOXIDE
CARBON MONOXIDE
CHEMICAL REACTORS
COAL
CONCENTRATION RATIO
METHANE
OXYGEN ENRICHMENT
REDUCTION
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
ENRICHMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
LOW BTU GAS
MATERIALS
ORES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
010500* - Coal
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034000 - Natural Gas- Combustion
014000 - Coal
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