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7608128 Direct reduction process and apparatus  
A direct reduction process for a metalliferous material includes supplying a solid carbonaceous material and an oxygen-containing gas into a fluidized bed in a first vessel and generating heat by...
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...
7588625 Apparatus for manufacturing molten irons to dry and convey iron ores and additives and manufacturing method using the same  
The invention relates to an apparatus and method for manufacturing molten irons. The method for manufacturing molten irons includes providing a mixture containing iron by drying and mixing iron...
7533620 Combustion installation with CO2 recovery  
An installation for combustion ( 1 ) of carbon-containing solids includes an oxide reducing reactor ( 2 ), a first cyclone ( 5 ), a recuperator ( 6 ), an oxidation reactor ( 3 ), a second cyclone (...
7033417 Method and installation for reducing orefines in a multi-stage suspension gas stream using a cyclone separator  
The invention relates to the reduction of fine ores, whereby in a multi-stage gas suspension preheater the fine ores are preheated, calcined and then reduced in at least one lowest heat exchanger...
6736876 Fluidized bed breakage prevention system for fluidized bed reduction reactor and method  
A fluidized bed reduction reactor ( 100 ) for supplying a reduced iron to a melter-gasifier ( 1 ) of a smelting reduction system includes an exhaust gas supply unit ( 3 ) for supplying an exhaust...
6585798 Fluidized bed reactor for preventing the fine iron ore from sticking therein and method thereof  
A smelting reduction apparatus which separates exhaust gas, which is exhausted from a melter-gasifier or a fluidized bed reactor, into dusts and reducing gas to supply them to each fluidized bed...
6491738 2-stage fluidized bed type fine iron ore reducing apparatus, and reducing method using the apparatus  
A two-stage fluidized bed reducing apparatus and a reducing method for fine iron ore of a wide particle size distribution with an increased degree of utilization of the reducing gas. Fine iron...
6336954 Process and plant for the direct reduction of particulate iron-oxide-containing material  
A process for the direct reduction of particulate iron-oxide-containing material by fluidization. A synthesis gas is introduced as a reducing gas into several fluidized bed zones consecutively...
6235081 Process for the production of spongy metal  
A method for producing a sponge metal from metal ore or iron ore which comprises reacting said metal ore or iron ore in a reduction zone with a CO-- and H 2 -containing, reducing feed gas source...
6214083 Method and plant for producing iron from lumpy and fine-particulate sponge iron  
In a method of producing liquid pig iron or liquid steel pre-products from iron-oxide-containing material, fine-particulate iron-oxide-containing material is reduced to fine-particulate sponge iron...
6149708 Process for producing sponge iron  
A process for producing sponge iron by directly reducing particulate, iron-oxide-containing material, wherein reducing gas that is formed from carbon carriers and an oxygen-containing gas in a...
6143053 Process for producing sponge iron by direct reduction of iron-oxide-containing material  
In a process for producing sponge iron by direct reduction of iron-oxide-containing material, synthesis gas is mixed with top gas forming in the direct reduction of the iron-oxide-containing...
6063155 Fluidized bed process for the production of iron carbide  
A process for conversion of iron oxide to iron carbide, including the steps of: providing a fluidized bed reactor having a metallizing zone and a carburizing zone; feeding iron oxide to the...
5997608 Process for the production of molten pig iron or molten steel, pre-products and sponge iron and a plant for carrying out the process  
In a process for the production of molten pig iron or molten steel pre-products and sponge iron from charging materials consisting of iron ore and, if desired, fluxes, direct reduction of the...
5919281 2-stage fluidized bed furnace for pre-reducing fine iron ore and method for pre-reducing fine iron ore using the furnace  
The 2-stage fluidized bed furnace for pre-reducing a fine iron ore comprises a first stage fluidized bed furnace for receiving the fine iron ore from a storage hopper, discharging medium/small...
5912400 Method for reforming reducing gas in a fluidized bed process for reduction of ore  
A method for reforming reducing gas in a fluidized bed process for reduction of ore in a series of ore reducing reactors, including the steps of: passing ore through a plurality of reducing...
5873926 Process for reducing oxide-containing material and plant for carrying out the process  
In a process for reducing particulate oxide-containing material using the whirl bed method, the oxide-containing material, by means of reducing gas flowing from bottom to top, is maintained in the...
5871560 Process and plant for the direct reduction of iron-oxide-containing materials  
A direct reduction process is disclosed for iron oxide-containing materials. Synthesis gas is mixed with top gas produced during direct reduction of the iron oxide-containing materials and is used...
5858058 Process and plant for avoiding metal dusting in the direct reduction of iron-oxide-containing materials  
A direct reduction process is disclosed for iron-oxide-containing materials. Synthesis gas is mixed with top gas produced during direct reduction of the iron-oxide-containing materials and is used...
5855643 Direct reduction process for iron oxide-containing materials  
In a process for the direct reduction of iron-oxide containing material, synthesis gas is mixed with top gas formed in the direct reduction of the iron-oxide containing material and is used as a...
5837031 Method for producing iron carbide  
An apparatus and method of producing iron carbide of predetermined quality is disclosed. The method of producing iron carbide (Fe 3 C) comprises reducing and carburizing an iron-containing raw...
5833734 Process for the direct reduction of particulate iron-containing material and a plant for carrying out the process  
With a process for the direct reduction of particulate iron-containing material by fluidization, reformed gas, at least partially freed from CO 2 , is supplied to a fluidized-bed reduction zone as...
5785733 Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles using the apparatus  
A reduction apparatus and a method for efficient reduction of fine iron ores of wide grain range comprising serially arranged a drying/preheating furnace, a first reducing furnace for prereduction...
5690717 Iron carbide process  
A process for producing iron carbide in a fluid bed reactor in which the pressure may be maintained in excess of the pressure at which the mole fraction of hydrogen in the process gas begins to...
5676734 Method of treating fine ore  
In a process for treating fine ore, the fine ore is dried by aid of a hot drying gas flowing around the ore particles of the fine ore, the drying gas, after having flown around the ore particles,...
5674308 Spouted bed circulating fluidized bed direct reduction system and method  
A method and apparatus for producing direct reduced iron from iron oxide fines. The iron oxide raw material are passed through a pre-heater having a spouted port then to a primary spouted bed...
5667556 Method of reprocessing zinc- and iron oxide-containing residual material  
This invention describes a method of reprocessing zinc- and iron oxide-containing residual material. Zinc- and iron oxide-containing dust and/or sludge is granulated with water, granules and...
5603748 Process and apparatus for a direct reduction of iron oxide containing materials to form Fe.sub.3 C  
In order to effect a reduction and a carburization to form Fe 3 C to the highest possible degree in a relatively short time in an economical process, a treatment in two stages is effected in...
5560762 Process for the heat treatment of fine-grained iron ore and for the conversion of the heat treated iron ore to metallic iron  
Disclosed is a process for the heat treatment of fine-grained iron ore and for the conversion of the heat-treated iron ore to metallic iron, wherein a) the fine iron ore is reacted with at least...
5527379 Process for a direct reduction of iron oxide containing materials to form Fe.sub.3 C  
In order to effect a reduction and a carburization to form Fe 3 C to the highest possible degree in a relatively short time in an economical process, a treatment in two stages is effected in...
5443615 Molded ceramic articles  
A method of producing a molded ceramic article comprises the first step mixing powdery raw materials and a liquid additive, thereby obtaining a mixed raw material, the second step press-molding the...
5439504 Direct-reduction process for directly reducing particulate iron-oxide-containing material  
In a process for the direct reduction of particulate iron-oxide-containing material by the fluidized bed method, reformed gas is mixed with top gas forming in the direct reduction of the...
5433767 Direct reduction of iron oxide materials with solid carbonaceous reducing agents  
In a first fluidized bed vessel containing an expanded fluidized bed, iron oxide-containing materials are reduced under weakly reducing conditions with solid carbonaceous reducing agents to or to...
5382277 Process for reducing fine-grain iron oxide materials with a gas  
A process is described in which iron oxide-containing materials are reduced by a treatment with a gas underpressure in series-connected fluidized bed reactors, wherein hydrocarbons are cracked to...
5370727 Fluidized process for direct reduction  
A fluidized bed direct process is discharged for reducing raw iron ore fines and directly producing a steel product. The disclosed process includes a process for feeding raw iron ore fines into a...
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...
5185032 Process for fluidized bed direct steelmaking  
A fluidized bed direct process for reducing raw iron ore fines and directly producing an iron product comprises a process for feeding raw iron ore fines into a multi-stage reactor assembly; a...
4995904 Method for the pretreatment of a lumpy carbon carrier  
A method is disclosed for pretreatment of a lumpy carbon carrier suitable for forming a fluidized bed and a solid bed used in the production of pig iron from iron ore. The ore is pre-reduced in at...
4806158 Process of reducing fine-grained iron-containing material by means of solid carbonaceous reducing agents  
Disclosed is a process for the production of reduced iron oxide-containing materials. Iron oxide and solid carbonaceous reducing agent are charged into a first expanded fluidized bed, which is...
4678508 Method for fluidized bed reduction of iron ore  
A method of using coal for reducing iron ore in a fluidized bed to obtain a reduced iron comprising fluidizing and pylolysis of a fine coal in a first fluidized bed, fluidized and thermal cracking...
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...
4127406 Process for the heat treatment of fine material  
Fine solid material is preheated in a first zone, then heated to the final treatment temperature by passing it through a flame in a second zone, and then separated in a third zone from the hot...
4082545 Reduction of iron ore in fluidized bed reactors  
Iron ore is introduced in a series of fluidized bed reactors, with a reducing gas that is heated before each bed and cooled after each bed and thereafter washed with water so as to remove from the...
4045214 Method for producing steel  
A method for producing steel from fine-grained iron ores includes the step of preheating and partially reducing the fine-grained iron ores in a countercurrent heat exchanger. The preheated and...
3917480 Process for preparing the feed solid charge for fluid bed reactors  
A process for preparing the solid charge to be fed into fluidized bed reactors, wherein from the raw material a first fraction of fines is removed for an amount comprised between 20 and 70% of the...
3709679 WUSTITE BED IMPROVEMENT  
In the fluidized reduction of specular hematites, the process in the wustite reducing bed is terminated prior to the formation of an equilibrium wustite composition, thereby providing for improved...
3421884 METHOD FOR CARRYING OUT GASSOLIDS REACTIONS  
3389988 Process of direct reduction of iron oxides in fluidized beds  
3374087 Production of iron  
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