|
Match
|
Document |
Document Title |
|
|
7597739 |
Method for reducing a particulate material containing a metal, especially iron ore
In a process for reducing iron-ore-containing particulate material in at least a two-stage process, reducing gas is conducted through at least two reaction zones consecutively arranged in series...
|
|
|
6224649 |
Method and apparatus for reducing iron-oxides-particles having a broad range of sizes
Methods and apparatus for the reduction into metallic iron of iron-oxides-containing particles having a broad range of sizes. Particles, typically within a broad range of sizes of about 0.1 mm to...
|
|
|
6187076 |
Fluidized bed reduction method, fluidized bed reduction reactor, and fluidized bed reduction system
A fluidized bed reduction method in which powder raw material, including powder ore or partially pre-reduced powder ore, forms a fluidized bed with, and is sequentially reduced by reducing gas...
|
|
|
6136065 |
Method and device for direct reduction of ore fines
A method and device are provided for direct reduction of ore fines in a wide range of particle size, the reducing agent being hydrogen placed in a fluidized bed gutter with a plurality of...
|
|
|
6030432 |
Process for reducing ore fines and arrangement for carrying out the process
In a process for the reduction of fine ore by reducing gas in the fluidized bed method, the following characteristic features are realized in order to achieve a uniform and even degree of...
|
|
|
5366897 |
Method for controlling the conversion of iron-containing reactor feed into iron carbide
A process for controlling the conversion of reactor feed to iron carbide is disclosed. The reactor feed is subjected to a process gas in a fluidized bed reactor (10), and the off-gas from this...
|
|
|
5078788 |
Method for the direct reduction of iron
A process for the direct reduction of metal oxides containing iron to obtain a DRI metallized iron product comprises feeding heavy hydrocarbon oil under controlled conditions to a cracking zone...
|
|
|
5069716 |
Process for the production of liquid steel from iron containing metal oxides
The present invention relates to a process for the production of liquid steel from iron containing metal oxides and, more particularly, a process for the direct production of iron-containing metal...
|
|
|
5064467 |
Method and apparatus for the direct reduction of iron
A process for the direct reduction of iron-containing metal oxides to obtain iron is disclosed in which a reformed reduction gas rich in H 2 and CO and having an oxidation degree in the range of...
|
|
|
4360378 |
Direct reduction of iron oxide containing material with biofuel
A new method is devised for the production of raw iron or so-called metallized iron ore. Biofuels i.e. preferably fuel wood and/or peat is in the final reduction brought into direct contact with...
|
|
|
3985547 |
Iron ore reduction in multiple fluidized beds
Iron ore is reduced in a multiple fluid bed reactor, the beds being vertically superposed in a tower and the ore passing by gravity downwardly from bed to bed. The lowermost and all superposed beds...
|
|
|
3944413 |
Direct reduction of metallic oxides
The capacity and effectiveness of a fluidized multi-bed process for the direct reduction of broad size-range metallic oxides, such as ion oxide particles, can be materially improved by feeding the...
|
|
|
3864465 |
Production Of High Purity Hydrogen
Hydrogen of a purity of at least 90% is obtained from a cryogenic unit. The impure hydrogen is pretreated for removal or conversion of the impurities in a bed of fluidized iron oxides.
|
|
|
3840363 |
FLUIDIZATION OF PARTICULATE SOLIDS
In fluidized, multi-bed processes such as the fluidized reduction of iron oxide ores, the periodic discharge of particles from bed to bed is facilitated by the supplemental flow of gas through the...
|
|
|
3615340 |
QUENCHING AND PASSIVATION OF PARTICULATE METALS
A process is disclosed for rendering active particles of reduced iron ores resistant to oxidation by treating the particles in a fluidized bed at elevated temperatures with mildly oxidizing gases.
|
|
|
3615352 |
PROCESS FOR REDUCTION OF IRON ORE IN STAGED BEDS WITHOUT BOGGING
A multistage, high temperature fluidized iron ore reduction process is described wherein bogging or defluidization is prevented by adding specified particulate agents to ferrous reduction zones.
|
|
|
3551138 |
IRON ORE REDUCTION PROCESS
|
|
|
3511642 |
FLUID IRON ORE REDUCTION WITH INVERSE TEMPERATURE STAGING
|
|
|
3475160 |
METHOD OF PRODUCING REDUCING GASES FOR THE FLUIDIZED BED REDUCTION OF ORES
|
|
|
3469969 |
PROCESS FOR REDUCING IRON ORES
|
|
|
3442028 |
GAS-SOLIDS CONTACTING STRUCTURE
|
|
|
3428446 |
FLUIDIZED BED PRODUCTION OF IRON
|
|
|
3392218 |
Method of heating carbon monoxidecontaining gases without carbon deposition
|
|
|
3384474 |
Reduction of iron ore
|
|
|
3364011 |
Process for the production of iron by the direct reduction of iron oxide ore
|
|
|
3303017 |
Metal treating process
|
|
|
3236607 |
Apparatus for iron ore reduction
|
|
|
3224869 |
Method of reducing iron oxide
|
|
|
3210180 |
Temperature control of iron ore reducing fluidized beds
|
|
|
3154405 |
Reduction of iron oxide
|
|
|
3140940 |
Iron oxide reduction with hydrogen
|
|
|
3118757 |
Method and means for preheating ferrous oxide
|
|
|
2995426 |
Elevated fluidizing reactor
|
|
|
2965449 |
Heat recovery in fluosolids process
|
|
|
2900246 |
Iron oxide reduction
|
|
|
2891846 |
Furnace structure
|
|
|
2890106 |
Apparatus for heat treating fluidized solids
|
|
|
3562780 |
Title is not available
|
|
|
3567426 |
Title is not available
|
|
|
3684482 |
Title is not available
|
|
|
3573959 |
Title is not available
|
|
|
3759697 |
Title is not available
|
|
|
3761244 |
Title is not available
|