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7449142 |
Plant for use in continuous steelmaking process
A plant for the continuous manufacture of steel includes a direct reduction furnace for producing direct reduced iron (DRI) and a stationary electric arc furnace for melting the DRI. The electric...
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7402191 |
Process for producing sintering feedstock and apparatus therefor
As a pretreatment of a manufacturing process of sintered ore, a sintering material including iron ore, a SiO 2 -containing material, a limestone base powdery material and a solid fuel type powdery...
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7264765 |
Method and apparatus for smelting titanium metal
This invention relates to a method and an apparatus for smelting titanium metal by the thermal reduction of titanium oxide (TiO 2 ) to titanium metal (Ti); a mixed salt of calcium chloride (CaCl 2...
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7214256 |
Solvent extraction process
A circuit configuration for a metal solvent extraction plant comprising:
A) an extraction section for extracting metal ions from an aqueous leach solution containing the metal ions with an...
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6972107 |
System for direct electrowinning of copper
A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use...
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6893606 |
Method and system for extracting metal from glass waste
A method and systems are provided for extracting heavy metal from glass waste. Glass is initially crushed to a diameter size between about 10 nanometers and about 2 millimeters. The glass is then...
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6824702 |
Device and method for producing molten salts and use thereof
The invention relates to an apparatus and a process for the preparation of salt melts, and mixtures thereof, by means of a stirred reactor and a tubular reactor, in which the starting materials are...
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6585929 |
Direct smelting vessel
A direct smelting vessel which is adapted to contain a molten bath of metal and slag is disclosed. The vessel includes an off-gas duct that has: (a) a first section which has a relatively slight...
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6419724 |
Method for reducing iron oxides and for melting iron and installations therefor
An apparatus for producing liquid pig iron, including an iron oxide reducing furnace, a melting furnace positioned to receive and melt iron oxides reduced in the reducing furnace, a pig iron...
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6406662 |
Rotary hearth furnace with charge slot air shield
An apparatus for charging feed material through an opening into a furnace has a fixed structure and a moveable door. The moveable door together with the fixed structure defines the opening. The...
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6403022 |
Device for the direct reduction of iron oxides
Device for the direct reduction of iron oxides of the type with a gravitational load, comprising a reactor defining, in its upper part, at least a zone inside which the reduction reaction occurs,...
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6391249 |
Device for producing sponge iron
A device for producing sponge iron from iron oxide lumps consists of a reduction shaft in which a hot dust laden reducing gas is delivered. The gas is produced in a gas generator by means of...
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6368548 |
Direct smelting process and apparatus
A direct smelting process for producing metals from metalliferous feed material is disclosed. The process includes forming a molten bath having a metal layer and a slag layer on the metal layer and...
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6290897 |
Pumpless silver recovery system
A simple and reliable silver recovery system including a series of silver recovery processing containers through which solution flows by gravity to a waste container. The reservoir container...
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6241515 |
Device and method for treating combustibles obtained from a thermal processing apparatus and apparatus employed thereby
A device adapted for attachment to a thermal processing furnace, the device includes a housing having first and second openings with a chamber located therebetween, the second opening is...
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6235235 |
System for extracting sodium metal from sodium hydroxide and a reductant of natural gas
An apparatus and system for its use for a continuous production on an alkali metal, preferably sodium metal, by a reduction of the metal hydroxide with methane or natural gas as a reductant. The...
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6200522 |
Method and apparatus for smelting iron ore
Method and apparatus for smelting iron ore in which iron ore is preheated and partly reduced within a first reaction zone and then further reduced in a second reaction zone. The first reaction zone...
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6168752 |
Process for producing metal powders and apparatus for producing the same
A process for producing metallic powders a chlorination step for continuously producing chloride gas of metal by reacting metal with chlorine gas, and a reduction step for continuously reducing the...
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6149859 |
Gasification plant for direct reduction reactors
The present invention is an integrated process and apparatus for supplying at least a portion of the reducing gas feedstock to a reduction reactor, such as a reactor for the direct reduction of...
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5976219 |
Method and apparatus for recycling of scrap metal
A process for the recycling of scrap metal, such as copper wire, comprises the steps of combining the scrap metal with a concentrate of a metal similar to the scrap metal in a pressure vessel (10)...
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5858060 |
Magnetic separation method for iron carbide
A method for purifying iron carbide begins by feeding ore to a reaction chamber. A mixture of iron, iron oxides, gangue, and iron carbides is extracted from the reaction chamber. The temperature of...
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5611989 |
Method for producing easily volatile materials
The invention relates to a method to be used in producing easily volatile metals from their sulfides. The method employs two closely connected furnaces, a reduction furnace and a converter, which...
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5535992 |
Apparatus and method for acidic leaching of lateritic ores
The invention provides an autoclave configuration for pressure leaching lateritic ores at elevated temperatures. The autoclave configuration includes at least one primary autoclave. The primary...
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5476248 |
Apparatus for producing high-purity metallic chromium
There is proposed a novel method for manufacturing high-purity metallic chromium that can eliminate the problems of reduced heating capability of the furnace, contamination of produced metallic...
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5044613 |
Uniform and homogeneous permanent magnet powders and permanent magnets
Method and apparatus for forming rare-earth magnets and magnet precursors of fine particle sized metal alloy powders with a high degree of metal to metal intimacy and homogeneity in the particle to...
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4893790 |
Apparatus for producing metal zirconium by the reduction of zirconium tetrachloride
The invention concerns a process for the production of metal Zr by means of molten Mg in a reactor 1 having a hearth plate 3, comprising separating the magnesium chloride formed in the reduction...
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4814003 |
Apparatus and method for extraction and recovery of precious metal using coherent radiation
Apparatus and method for extracting and recovering precious metals from source materials, such as ore materials, incorporating these components, includes conditioning the ore to have particle...
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4668287 |
Process for producing high purity zirconium and hafnium
This is a process for producing high quality zirconium or hafnium sponge. It is especially useful for producing the very high purity zirconium which may be used to line the inner surface zirconium...
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4577838 |
Treatment of pelletized iron ores
A system for providing thermal and chemical energies for the production of pelletized iron ore concentrates while allowing a reduction of a portion of the material in process. The material in...
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4565354 |
Apparatus for producing purified refractory metal from a chloride thereof
An apparatus and a method for producing purified refractory metal from a chloride thereof, comprising: a conversion/evaporation chamber, defined by a first substantially cylindrical vessel means...
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4527778 |
Apparatus for production of refractory metal from a chloride thereof
An apparatus and method for production of refractory metal from a chloride thereof, comprising a conversion assembly and a purification assembly, the former in turn comprising: an elongated...
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4512557 |
Apparatus for preparing high-melting-point high-toughness metals
An improved apparatus for preparation of high-melting-point high-toughness metals comprising a reaction chamber in which a halide of said metal is reacted with an active metal and the remaining...
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4389247 |
Metal recovery process
A process for recovering a metal in its elemental state from an oxide or salt of the metal comprising passing the metal oxide or salt and a reducing gas concurrently downward through a packed bed...
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4372540 |
Apparatus for oxygen sprinkle smelting of sulfide concentrates
A horizontal furnace for converting nonferrous metal sulfide concentrates to a molten matte has a plurality of vertically disposed burners along the longitudinal axis of the furnace roof, the...
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4307872 |
Apparatus for reducing ore
Ore taken from the group consisting of low-grade manganese ore ferromanganese ore and chromium ore is reduced in an electric arc furnace having two melting zones divided by a barrier. Ore and a...
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4245822 |
Process for the production of aluminium
A process for the production of aluminium in two steps: 2Al 2 O 3 +9C=Al 4 C 3 +6CO (ii) and Al 4 C 3 +Al 2 O 3 =6Al+3CO (iii) Reaction (ii) takes place in...
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4235425 |
Impact bed gasifier-melter
A method and apparatus for producing molten iron in which pulverized coal is gasified with oxygen in an iron melting chamber, iron pellets on an upstanding hearth in the melting chamber are exposed...
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4213599 |
Apparatus for the production of aluminium
In a apparatus for the production of aluminium a molten alumina slag, containing combined carbon is circulated through one or more alternately arranged relatively low temperature zones where carbon...
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4145187 |
Treatment of material with hydrogen chloride
This invention relates to apparatus for refining platinum group metal concentrates and the separation therefrom of silver and of the majority of base metals which are present with them. In more...
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4015069 |
Apparatus for extracting metals from ore
An apparatus for extracting metals from ore by electrical discharge therethrough which melts the available metallic values into separated nuggets. Pulverized ore, preferably ionized, is supported...
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3910767 |
Apparatus for preparing metallic compounds by sublimation
Reactor for the preparation of very pure metallic compounds such as MoO 3 by sublimation employing the so-called "candle effect," that is, the subdivided MoS 2 concentrates are fed to the...
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3901489 |
Continuous process for refining sulfide ores
A continuous process for refining metal sulfide ores which is carried out by arranging a smelting furnace and a blister furnace, each maintaining discreteness in the reaction zones, wherein a...
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3722870 |
METHOD AND FURNACE FOR SINTERING
A method and furnace are disclosed for continuous sintering powdered metal products. The furnace includes a high temperature heating zone through which the powdered metal products pass for...
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3675910 |
APPARATUS FOR PRODUCING METAL POWDERS
Producing metal powders of controlled particle size by reducing oxides with the vapor of a reactive metal in a vacuum.
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3599950 |
HOT-BLAST CUPOLA FURNACE
A hot-blast cupola furnace with a liningless stack having a water-cooled jacket and a hearth with a refractory lining below the level of the tuyeres of the furnace is provided with an inclined...
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3536309 |
APPARATUS FOR THE MANUFACTURE OF CHROME POWDER
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3519258 |
DEVICE FOR REDUCING CHLORIDES
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3436210 |
SUBHALIDE REFINING OF ALUMINUM
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3305350 |
Process and apparatus for making steel
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3292914 |
Preventing blockage in apparatus for monohalide refining of aluminum
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