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5474280 |
Apparatus for preheating a reactor feed
A method and apparatus for preheating a reactor feed, comprised of an iron ore (10) and a process gas (21), in an iron carbide process for making steel is provided. The apparatus comprises a...
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5437708 |
Iron carbide production in shaft furnace
A method and apparatus for the production of iron carbide in a shaft furnace, by reacting a carbon containing reducing gas as the process gas with particulate metal oxide material for an extended...
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4842256 |
Apparatus for melting metal
A process for melting metal in a shaft furnace operated without coke using a liquid or gaseous fuel, whose combustion products initially heat the molten metal which has collected below the furnace...
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4691899 |
Apparatus for reactor iron making
An improved apparatus for reactor iron making has a furnace body to melt raw material, typically as scrap, a shaft to heat the raw material, and a raw material supply bucket, these three components...
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4612042 |
Method for automatically fluxing and casting samples
A method of fluxing an oxide sample includes placing the sample in a crucible which has a central axis and a bottom, and heating the crucible and thus the oxide sample. A motion is applied to the...
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4556418 |
Process for melting a ferrous burden
A process for melting a ferrous burden comprising scrap iron, scrap steel, pig iron, direct reduced iron or mixtures thereof without the use of coke is provided. Air or enriched air as a primary...
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4462792 |
Reheating metal bodies with recovered blast-furnace energy
Metal bodies such as billets and blooms are reheated for rolling in a metal-refining operation having a blast furnace by first heating the top gas of the blast furnace to at least 800° C. by means...
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4457494 |
Metal melting furnace
A refractory lined melting furnace particularly suited for separation of non-ferrous metals with embedded or attached ferrous components, includes a casing or body pivotally mounted and tiltable by...
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4370162 |
Method for the gaseous reduction of iron ore to sponge iron
Process and apparatus for the gaseous direct reduction of iron ores wherein at least a portion of the spent reducing gas effluent from a reduction reactor is upgraded and thereafter heated and...
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4363655 |
Method for operating blast furnace
A method for operating a blast furnace, characterized by: adding a prescribed volume of blast furnace gas to an air for blast fed to a hot stove; oxidizing, in the hot stove, CO contained in the...
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4362555 |
Method and apparatus for manufacturing sponge iron
Disclosed are a method and apparatus for manufacturing sponge iron by the continuous reduction of iron oxides in a shaft utilizing recirculation gases. Reaction gas is removed from the shaft...
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4354669 |
Apparatus for regulating the quantities and percentages of the gaseous constituents of oxygen, nitrogen, carbon dioxide and water in reaction processes in metallurgical applications
An apparatus is provided for regulating the percentage quantities of individual gases present in the combustion air supplied for reaction processes in metallurgy. A molecular sieve absorption...
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4175951 |
Method and apparatus for preparing a reducing gas stream
A method and apparatus for preparing a hot reducing gas for introduction into a vessel containing ore oxide in order to react with the ore oxide to produce reduced metal including the steps of...
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4102674 |
Method for hardening iron ore pellets
Iron ore pellets on a grid in a treatment chamber are hardened by contact with a heat treated, low calorific gas. The gas is generated in the gasification chamber of a slag bath generator. The...
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3883123 |
Apparatus for the reduction of iron ores by direct reduction
An apparatus for the direct reduction of iron ore, e.g. in a shaft furnace, comprises a pair of reducing-gas generating reformers which are alternately heated and functionally interchanged to...
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3880648 |
Method for producing steel in an electric arc furnace
A method for producing steel in an electric arc furnace to increase its productivity and overall efficiency, which method utilizes apparatus comprising two roofs and a preheater station. One roof...
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3764123 |
METHOD OF AND APPARATUS FOR REDUCING IRON OXIDE TO METALLIC IRON
This invention relates to a method and apparatus for reducing iron oxide to metallic iron, utilizing a continuous process employing a reducing gas with a high H 2 and CO content made by...
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3749386 |
METHOD AND MEANS FOR REDUCING IRON OXIDES IN A GASEOUS REDUCTION PROCESS
This is a disclosure of a method and apparatus for reducing iron oxides to metallized pellets and includes the desulphurization of gases containing sulphur and/or compounds of sulphur, especially H...
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3738795 |
REGENERATIVE HOT-BLAST STOVES AND THEIR OPERATION
A method and apparatus for operating regenerative hot-blast stoves which are heated successively or alternately to supply the hot-blast required in blast furnaces. Each furnace is provided with a...
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3677534 |
APPARATUS FOR REDUCING OXYGEN CONTENT OF OXIDIC MINERAL ORE
A system with several variations is disclosed for reducing the oxygen content of mineral ore. The preferred embodiment of the system includes first, in mineral flow sequence, a preliminary...
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3661553 |
PROCESS FOR REDUCING OXYGEN CONTENT OF OXIDIC MINERAL ORE
A process is disclosed for heat-treating mineral ore by successively drying, preheating, and reducing particles of the ores to a lower state of oxidation. The particles are gathered into a first...
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3630719 |
METHOD OF OPERATING A CUPOLA FURNACE
The formation of an explosive gas mixture in the operation of a ferrous metallurgical furnace such as a vertical cupola furnace or the like is prevented, by injecting an inert gas stream into the...
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3558118 |
APPARATUS FOR THE GASEOUS REDUCTION OF PELLETIZED AND LUMP IRON ORES
Apparatus for the gaseous reduction of pelletized and lump iron ores consisting of a shaft type furnace in which rotating means vertically disposed within the furnace assist in the descent of the...
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3439909 |
APPARATUS FOR PREHEATING SCRAP METAL
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3436210 |
SUBHALIDE REFINING OF ALUMINUM
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3427013 |
LOW TEMPERATURE BLAST FURNACE AND METHOD THEREFOR
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3425676 |
MOLTEN METAL PRODUCING FURNACE
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3241824 |
Apparatus for treating small particle size materials
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3216711 |
Blast furnace pressurized by jet engine gas
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3216712 |
Air supply for a blast furnace
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3211590 |
Method of and apparatus for annealing sheet metal
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3203684 |
Solid fuel furnace
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3128174 |
Method of making sponge iron
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3105757 |
Method and apparatus for the preparation of ferrous oxide
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2880988 |
Apparatus for reducing ferruginous ores containing substantial amounts of manganese
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2859954 |
Gas turbine plant for providing a continuous supply of hot compressed air
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2807535 |
Method of and plant for reducing iron ore
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2796341 |
Method of operation and control system for cupola and associated apparatus
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2795497 |
Method and apparatus for producing molten iron
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3743481 |
Title is not available
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0007642 |
Title is not available
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