ClassID:

118766

C21B13/0073 - CPC Classification

Classification description:

Making spongy iron or liquid steel, by direct processes Selection or treatment of the reducing gases

Recent Application in this class:
#1
20260110493
2026-04-23

HIGH-EFFICIENCY PHOTONIC FURNACES FOR METAL PRODUCTION

#2
20260103768
2026-04-16

Direct Reduced Iron Pellets and Use Thereof

#3
20260098313
2026-04-09

MULTI-SCALE COORDINATED CONTROL METHOD OF INTEGRATED ENERGY SYSTEM FOR GREEN HYDROGEN METALLURGY

#4
20260078457
2026-03-19

FLUIDIZED BED IRONMAKING PROCESS AND SYSTEM

#5
20260049370
2026-02-19

A DIRECT REDUCTION FACILITY FOR REDUCTION OF A METAL OXIDE MATERIAL

#6
20260043101
2026-02-12

ADJUSTING CARBON CONTENT IN DIRECT REDUCED IRON

#7
20260043100
2026-02-12

A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace

#8
20260035758
2026-02-05

USE OF TAIL GAS MADE OF THE DISCHARGED GAS OF A REDUCTION PROCESS OF IRON OXIDE-CONTAINING MATERIAL

#9
20260028687
2026-01-29

A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace

#10
20260022429
2026-01-22

A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace

#11
20260022428
2026-01-22

Method for manufacturing pig iron into an electrical smelting furnace and associated smelting furnace

#12
20260002226
2026-01-01

Method for Producing Cold Direct Reduced Iron

#13
20250388985
2025-12-25

A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace

#14
20250369061
2025-12-04

DIRECT REDUCTION SYSTEM AND METHOD TO MITIGATE THE DISINTEGRATION OF IRON OXIDE DURING A REDUCTION REACTION

#15
20250354226
2025-11-20

METHOD AND AN ARRANGEMENT FOR A CONTINUOUS PRODUCTION OF SPONGE IRON FROM IRON ORE

#16
20250340960
2025-11-06

BIOMASS PROCESSING INTEGRATED WITH REDUCTION OF METAL ORES, SYSTEMS FOR THESE PROCESSES, AND PRODUCTS MADE THEREFROM

#17
20250305075
2025-10-02

EXTRACTION OF ELEMENTS AND/OR COMPOUNDS FROM IRON-CONTAINING MATERIALS SUCH AS IRON-CONTAINING TAILINGS, RECOVERY OF MAGNETICALLY SUSCEPTIBLE MATERIALS, AND RELATED SYSTEMS AND PRODUCTS

#18
20250297334
2025-09-25

IRON PRODUCTION WITH SYNTHESIS GAS FEED AND CARBON CAPTURE

#19
20250283186
2025-09-11

METHOD FOR THE DIRECT REDUCTION OF IRON ORE

#20
20250263807
2025-08-21

METHOD AND AN ARRANGEMENT FOR A CONTINUOUS PRODUCTION OF SPONGE IRON FROM IRON ORE

#21
20250257416
2025-08-14

METHOD FOR THE DIRECT REDUCTION OF IRON ORE

#22
20250242336
2025-07-31

A CATALYST FOR THE CONVERSION OF CO2 TO CO AND PROCESS FOR THE PREPARATION THEREOF

#23
20250230512
2025-07-17

ARRANGEMENT AND PROCESS FOR CHARGING IRON ORE TO, AND/OR DISCHARGING SPONGE IRON FROM, A DIRECT REDUCTION SHAFT

#24
20250223660
2025-07-10

METHOD FOR PRODUCING STEEL AND SPONGE IRON MANUFACTURING PROCESS

#25
20250214026
2025-07-03

SYSTEM FOR CARBON DIOXIDE CAPTURE AND CARBON RECYCLING FOR STEEL MILL

#26
20250197956
2025-06-19

METHOD AND SYSTEM FOR REMOVING CARBON DEPOSIT AT ELECTRIC HEATING SYSTEM IN A DIRECT REDUCTION PLANT UTILIZING HYDROGEN

#27
20250163526
2025-05-22

ELECTRIC GAS HEATING SYSTEM AND METHOD IN A DIRECT REDUCTION PLANT UTILIZING HYDROGEN OR NATURAL GAS

#28
20250163525
2025-05-22

METHOD OF REDUCING IRON ORE POWDER

#29
20250162864
2025-05-22

METHODS AND SYSTEMS TO PRODUCE HIGH QUALITY SYNGAS FOR THE PRODUCTION OF DIRECT REDUCED IRON (DRI) WHILE MAINTAINING HIGH ENERGY EFFICIENCY

#30
20250154615
2025-05-15

METHOD FOR THE PRODUCTION OF SPONGE IRON FROM IRON ORE

#31
20250109516
2025-04-03

IMPURITY REMOVAL IN AN IRON CONVERSION SYSTEM

#32
20250109450
2025-04-03

METHOD AND DEVICE FOR PRODUCING DIRECT REDUCED METAL

#33
20250092479
2025-03-20

METHOD FOR PRODUCING SPONGE IRON

#34
20250092478
2025-03-20

GAS COMPRESSION IN HYDROGEN-BASED DIRECT REDUCTION

#35
20250092477
2025-03-20

METHOD FOR OPERATING A STEELWORKS

#36
20250091863
2025-03-20

SYSTEMS AND METHODS FOR PRODUCING SYNGAS FROM BIO-OIL

#37
20250051866
2025-02-13

A METHOD FOR PRODUCING IRON FUEL

#38
20250051865
2025-02-13

REDUCTION OF IRON ORE METAL AND REACTOR FOR SAID REDUCTION

#39
20250034669
2025-01-30

Steelmaking method and associated network of plants

#40
20250034668
2025-01-30

Steelmaking method and associated network of plants

#41
20250027179
2025-01-23

System for Direct Reduction of Iron Ore to Sponge Iron

#42
20240410027
2024-12-12

METHOD FOR PRODUCING DIRECT REDUCTION IRON

#43
20240401160
2024-12-05

DIRECT REDUCED IRON SYSTEM AND METHOD

#44
20240400384
2024-12-05

METHOD FOR OPERATING A BLAST FURNACE PLANT

#45
20240392399
2024-11-28

INDUCTION HEATING OF DRI

#46
20240392398
2024-11-28

METHOD FOR REFINING MOLTEN IRON

#47
20240384364
2024-11-21

IRONMAKING METHOD

#48
20240376559
2024-11-14

METHOD FOR PRODUCING SLAG HAVING A DESIRED QUALITY

#49
20240368788
2024-11-07

ORE DISSOLUTION AND IRON CONVERSION SYSTEM

#50
20240360526
2024-10-31

METHOD FOR OPERATING A METALLURGICAL PLANT FOR PRODUCING IRON PRODUCTS

#51
20240352547
2024-10-24

IRON-CONTAINING POWDER DIRECT STEELMAKING DEVICE IN REDUCING ATMOSPHERE AND METHOD FOR USING SAME

#52
20240327939
2024-10-03

SUSTAINABLE STEEL PRODUCTION WITH CO-GENERATION OF HYDROGEN

#53
20240327937
2024-10-03

PROCESSES AND METHODS FOR THE PRODUCTION OF IRON AND STEEL

#54
20240309477
2024-09-19

System and method for pyrolysis driven reduced iron production using integrated thermal management

#55
20240309476
2024-09-19

PROCESS AND A SYSTEM FOR THE PRODUCTION OF SPONGE IRON FROM IRON ORE

#56
20240287631
2024-08-29

AGGLOMERATED ORE ASSESSING METHOD AND AGGLOMERATED ORE

#57
20240279767
2024-08-22

PRE-REDUCED PELLET PREPARATION APPARATUS AND METHOD BASED ON GRATE-ROTARY KILN

#58
20240279759
2024-08-22

HYDROGEN GAS RECYCLING IN A DIRECT REDUCTION PROCESS

#59
20240263333
2024-08-08

IRON CONVERSION SYSTEM AND APPLICATIONS

#60
20240263260
2024-08-08

A method for manufacturing direct reduced iron

#61
20240263259
2024-08-08

Operating method of a network of plants

#62
20240254576
2024-08-01

A method for manufacturing direct reduced iron

#63
20240254575
2024-08-01

A method for manufacturing direct reduced iron

#64
20240240276
2024-07-18

Method for manufacturing Direct Reduced Iron and DRI manufacturing equipment

#65
20240240275
2024-07-18

METHOD FOR MANUFACTURING DIRECT REDUCED IRON AND DRI MANUFACTURING EQUIPMENT

#66
20240229175
2024-07-11

A method of manufacturing of a steel product in several steelmaking units

#67
20240229174
2024-07-11

Method of manufacturing steel

#68
20240217817
2024-07-04

PROCESS AND SYSTEMS FOR CARBON-NEGATIVE AND WATER-POSITIVE HYDROGEN PRODUCTION

#69
20240191314
2024-06-13

METHOD OF OPERATING AN ELECTRIC ARC FURNACE AND STEEL MILL

#70
20240183614
2024-06-06

HIGH-EFFICIENCY PHOTONIC FURNACES FOR METAL PRODUCTION

#71
20240175101
2024-05-30

REDUCED IRON PRODUCTION METHOD AND REDUCED IRON PRODUCTION DEVICE

#72
20240150859
2024-05-09

METHOD AND SYSTEM FOR PRODUCING DIRECT REDUCED METAL

#73
20240150170
2024-05-09

Systems and methods for producing syngas from bio-oil

#74
20240132984
2024-04-25

A method of manufacturing of a steel product in several steelmaking units

#75
20240132983
2024-04-25

Method of manufacturing steel

#76
20240124948
2024-04-18

METAL OXIDE MATERIAL REDUCTION MEANS

#77
20240093330
2024-03-21

ARRANGEMENT AND PROCESS FOR CHARGING IRON ORE TO, AND/OR DISCHARGING SPONGE IRON FROM, A DIRECT REDUCTION SHAFT

#78
20240084410
2024-03-14

BLEED-OFF GAS RECOVERY IN A DIRECT REDUCTION PROCESS

#79
20240077256
2024-03-07

HIGH-EFFICIENCY PHOTONIC FURNACES FOR METAL PRODUCTION

#80
20240052442
2024-02-15

STEEL PRODUCTION FROM IRON MELT

#81
20240052441
2024-02-15

SMART HYDROGEN PRODUCTION FOR DRI MAKING

#82
20240035103
2024-02-01

PROCESS FOR THE PRODUCTION OF CARBURIZED SPONGE IRON

#83
20240026475
2024-01-25

Hydrogen reduction of iron ore concentrate in loose layers and compacts

#84
20230416854
2023-12-28

SYSTEMS AND METHODS FOR STEEL PRODUCTION

#85
20230357884
2023-11-09

LOW TEMPERATURE DIRECT REDUCTION OF METAL OXIDES VIA THE IN SITU PRODUCTION OF REDUCING GAS

#86
20230349014
2023-11-02

Blast furnace for ironmaking production

#87
20230323490
2023-10-12

COUPLING SYSTEM OF COPPER SLAG RECYCLING AND CO2 MINERALIZATION BASED ON INDUSTRIAL SOLID WASTE

#88
20230295755
2023-09-21

Modular direct reduction systems and associated methods

#89
20230272495
2023-08-31

METHOD FOR OPERATING A METALLURGIC PLANT FOR PRODUCING IRON PRODUCTS

#90
20230257838
2023-08-17

Systems and methods for steel production

#91
20230250499
2023-08-10

METHOD AND DEVICE FOR DIRECT REDUCTION WITH DRY VENT GAS DE-DUSTING

#92
20230243004
2023-08-03

A DIRECT REDUCTION SYSTEM AND RELATIVE PROCESS

#93
20230242433
2023-08-03

METHOD AND DEVICE FOR HARVESTING INNER ENERGY FROM EXHAUST GASES

#94
20230235419
2023-07-27

ENRICHMENT OF IRON FROM BAUXITE WASTE IN CHEMICAL LOOPING COMBUSTION

#95
20230175088
2023-06-08

INTEGRATED SYSTEMS EMPLOYING CARBON OXIDE ELECTROLYSIS IN STEEL PRODUCTION

#96
20230175086
2023-06-08

Process for the Production of Sponge Iron

#97
20230175084
2023-06-08

STEELMAKING LINE AND METHOD OF PRODUCING REDUCED IRON

#98
20230167517
2023-06-01

METHOD FOR PRODUCING REDUCED IRON

#99
20230167516
2023-06-01

METHOD FOR PRODUCING REDUCED IRON

#100
20230160028
2023-05-25

Process for the Production of Carburized Sponge Iron

#101
20230159324
2023-05-25

HYDROGEN RELEASE/STORAGE SYSTEM, HYDROGEN RELEASE/STORAGE METHOD, AMMONIA PRODUCTION EQUIPMENT, GAS TURBINE, FUEL CELL, AND STEEL MILL

#102
20230141693
2023-05-11

HYDROGEN RELEASE AND STORAGE SYSTEM, HYDROGEN RELEASE AND STORAGE METHOD, AMMONIA PRODUCTION APPARATUS, GAS TURBINE, FUEL CELL, AND STEEL MILL

#103
20230063785
2023-03-02

MATERIAL TREATMENT APPARATUS AND PROCESS USING HYDROGEN

#104
20230052345
2023-02-16

METHOD FOR RECYCLING SPENT REDUCTION GAS IN A DIRECT REDUCTION OF IRON ORE SYSTEM UTILIZING AN ELECTRIC GAS HEATER

#105
20230034215
2023-02-02

DIRECT REDUCTION SYSTEM UTILIZING HYDROGEN

#106
20230032245
2023-02-02

LIQUID FEED FOR A BASIC OXYGEN FURNACE

#107
20230002841
2023-01-05

Method and device for producing direct reduced, carburized metal

#108
20220396843
2022-12-15

METHOD AND CORRESPONDING APPARATUS FOR PRODUCING IRON FROM DIRECT REDUCTION OF IRON ORE

#109
20220389528
2022-12-08

Method for the direct reduction of iron ore

#110
20220235426
2022-07-28

METHOD AND SYSTEM FOR PRODUCING STEEL OR MOLTEN-IRON-CONTAINING MATERIALS WITH REDUCED EMISSIONS

#111
20220220572
2022-07-14

Process for the smelting of a metalliferous feedstock material

#112
20220213566
2022-07-07

Direct reduced iron system and method

#113
20220145412
2022-05-12

Method for direct reduction in a fluidized bed

#114
20220119914
2022-04-21

Method and device for producing direct reduced metal

#115
20220098686
2022-03-31

DIRECT REDUCTION SYSTEM AND RELATED PROCESS

#116
20220074006
2022-03-10

Process and apparatus for direct reduction with electrically heated-up reduction gas

#117
20220064744
2022-03-03

Method and device for producing direct reduced metal

#118
20220041441
2022-02-10

BI-REFORMING OF HYDROCARBONS TO PRODUCE SYNTHESIS GAS

#119
20220010405
2022-01-13

Method and device for producing direct reduced metal

#120
20220002826
2022-01-06

Device for manufacturing molten iron

#121
20210396157
2021-12-23

Inductive bath plasma cupola

#122
20210301359
2021-09-30

Integration of DR plant and electric DRI melting furnace for producing high performance iron

#123
20210301358
2021-09-30

Methods and systems for increasing the carbon content of direct reduced iron in a reduction furnace

#124
20210246521
2021-08-12

Method for carburization of HDRI produced in H2 based direct reduction process

#125
20210123110
2021-04-29

PLANT COMPLEX FOR PIG IRON PRODUCTION AND A METHOD FOR OPERATING THE PLANT COMPLEX

#126
20210095354
2021-04-01

Direct reduction process utilizing hydrogen

#127
20210032712
2021-02-04

Method and apparatus for producing direct reduced iron utilizing a catalytical pretreatment of hydrocarbons as a source of reducing gas

#128
20200385827
2020-12-10

Direct reduction process utilizing hydrogen

#129
20200332377
2020-10-22

Method and device for direct reduction with dry vent gas de-dusting

#130
20200318206
2020-10-08

Method for direct reduction using vent gas

#131
20200291823
2020-09-17

Cost effective plasma combined heat and power system

#132
20200216921
2020-07-09

Reduction gas extraction from saturated top gas

#133
20200080163
2020-03-12

Method of utilizing furnace off-gas for reduction of iron oxide pellets

#134
20190376190
2019-12-12

Methods and systems for syngas production and for efficient, flexible energy generation

#135
20190323098
2019-10-24

DIRECT REDUCTION PROCESS FOR THE PRODUCTION OF DIRECT-REDUCED IRON WITH HIGH PURITY METHANE

#136
20190048429
2019-02-14

METHOD AND SYSTEM FOR THE PRODUCTION OF POROUS IRON

#137
20180371560
2018-12-27

Method and system for producing high-carbon DRI using syngas

#138
20180363075
2018-12-20

METHOD FOR PRODUCING LIQUID PIG IRON

#139
20180361395
2018-12-20

Multi-stage suspension magnetizing roasting-magnetic separation system device and method for refractory iron ore

#140
20180355448
2018-12-13

Flash ironmaking system and method

#141
20180221947
2018-08-09

Method and apparatus for producing metallic iron from iron oxide fines

#142
20180185502
2018-07-05

IMMOBILIZATION OF BIOMOLECULES BY SELF-ASSEMBLED NANOSTRUCTURES

#143
20180155191
2018-06-07

Processes for synthesis of reducing gaseous mixtures starting from hydrocarbon streams and carbon dioxide

#144
20180119236
2018-05-03

Direct reduction with coal gasification and coke oven gas

#145
20180036804
2018-02-08

Method and apparatus for producing metallic iron from iron oxide fines

#146
20170298461
2017-10-19

METHOD FOR PRODUCING STEEL

#147
20170284229
2017-10-05

Cost effective plasma combined heat and power system

#148
20170058373
2017-03-02

Methods and systems for increasing the carbon content of sponge iron in a reduction furnace

#149
20170022578
2017-01-26

DEVICE AND METHOD FOR PRODUCING ELECTRIC ENERGY FOR PRODUCING IRON FROM OXIDE IRON ORES

#150
20170009309
2017-01-12

Methods and systems for increasing the carbon content of sponge iron in a reduction furnace

#151
20160348199
2016-12-01

Pneumatic ore charging

#152
20160340751
2016-11-24

Composite iron pellets

#153
20160319382
2016-11-03

SYSTEM FOR AND METHOD OF MANUFACTURING REDUCED IRON

#154
20160312320
2016-10-27

Method to operate a smelt cyclone

#155
20160208351
2016-07-21

Methods and systems for producing high carbon content metallic iron using coke oven gas

#156
20160168653
2016-06-16

Methods and systems for producing direct reduced iron incorporating a carbon dioxide and steam reformer fed by recovered carbon dioxide

#157
20160160304
2016-06-09

Use of top gas in direct reduction processes

#158
20160083811
2016-03-24

Method for reducing iron oxide to metallic iron using coke oven gas

#159
20160076113
2016-03-17

METHOD AND DEVICE FOR REDUCING IRON-OXIDE-CONTAINING FEEDSTOCKS IN A HIGH-PRESSURE REDUCING UNIT

#160
20160017447
2016-01-21

Methods and systems for producing direct reduced iron utilizing a petroleum refinery bottoms or petroleum coke gasifier and a hot gas cleaner

#161
20160017445
2016-01-21

Methods and systems for producing direct reduced iron and steel mill fuel gas using coke oven gas and basic oxygen furnace gas

#162
20160002744
2016-01-07

Direct reduction process with improved product quality and process gas efficiency

#163
20150345870
2015-12-03

Molten iron manufacturing apparatus and molten iron manufacturing method

#164
20150329930
2015-11-19

Reformer-gas-based reduction process with decarbonization of the fuel gas for the reformer

#165
20150259760
2015-09-17

METHOD FOR PRODUCING STEEL

#166
20150259759
2015-09-17

METHOD FOR HEATING PROCESS GASES FOR DIRECT REDUCTION SYSTEMS

#167
20150184264
2015-07-02

Method and apparatus for production of direct reduced iron (DRI) utilizing coke oven gas

#168
20150115508
2015-04-30

Burning apparatus and method for manufacturing reduced iron using the same

#169
20150007697
2015-01-08

Method and device for reducing iron-oxide-containing feedstocks in a high-pressure reducing unit

#170
20150004081
2015-01-01

Method and device for reducing iron oxide-containing feedstocks

#171
20140260803
2014-09-18

Process for producing direct reduced iron (DRI) utilizing gases derived from coal

#172
20140252700
2014-09-11

Direct reduced iron manufacturing system

#173
20140252699
2014-09-11

Direct reduced iron manufacturing system

#174
20140224068
2014-08-14

Method and device for producing pig iron

#175
20140167336
2014-06-19

INTEGRATION OF OXYGEN TRANSPORT MEMBRANE WITH COAL BASED DRI PROCESS

#176
20140166934
2014-06-19

Inductive bath plasma cupola

#177
20140150607
2014-06-05

Process for direct reduction of iron oxide

#178
20140053686
2014-02-27

System and method for reducing iron oxide to metallic iron using natural gas

#179
20130305883
2013-11-21

Method and apparatus for producing direct reduced iron utilizing a source of reducing gas comprising hydrogen and carbon monoxide

#180
20130264753
2013-10-10

Process and plant for producing char and fuel gas

#181
20130205951
2013-08-15

Method and system for the production of direct reduced iron using a synthesis gas with a high carbon monoxide content

#182
20130180362
2013-07-18

Partially-reduced iron producing apparatus and partially-reduced iron producing method

#183
20130118306
2013-05-16

Process and plant for producing hot metal

#184
20120326364
2012-12-27

Process and equipment for the production of direct reduced iron and/or pig iron from iron ores having a high-phosphorus content

#185
20120326363
2012-12-27

METHOD AND DEVICE FOR PROVIDING REDUCTION GAS FROM GENERATOR GAS

#186
20120288810
2012-11-15

Low NOx Fuel Injection for an Indurating Furnace

#187
20120192679
2012-08-02

System and method for producing metallic iron

#188
20120192677
2012-08-02

Method for making liquid iron and steel

#189
20120174710
2012-07-12

Reformer-gas-based reduction process with decarbonization of the fuel gas for the reformer

#190
20120119424
2012-05-17

System and method for producing metallic iron

#191
20120114533
2012-05-10

Reformer tube apparatus having variable wall thickness and associated method of manufacture

#192
20120111149
2012-05-10

Apparatus for and method of production of iron, semi steel and reducing gases

#193
20120036997
2012-02-16

Method and apparatus for separating a gaseous component

#194
20120007292
2012-01-12

METHOD AND APPARATUS FOR PRODUCING REDUCED METAL

#195
20120006449
2012-01-12

METHOD FOR PRODUCING METALLIC IRON

#196
20110296949
2011-12-08

Process and equipment for the production of direct reduced iron and/or pig iron from iron ores having a high-phosphorus content

#197
20110265603
2011-11-03

METHOD FOR PRODUCING GRANULAR IRON

#198
20110247457
2011-10-13

Process for production of direct reduced iron

#199
20110146485
2011-06-23

Process gas purification device for a melt reduction system for extracting pig iron

#200
20110126542
2011-06-02

Method and device for the treatment of product gas produced by pressure gasification of solid fuels

#201
20100313711
2010-12-16

Method for the melting of pig iron with the recirculation of blast furnace gas and with the addition of hydrocarbons

#202
20100311847
2010-12-09

Process for the purification of crude gas from solids gasification

#203
20100264374
2010-10-21

Method and apparatus for sequestering carbon dioxide from a spent gas

#204
20100263487
2010-10-21

Process and plant for producing char and fuel gas

#205
20100244336
2010-09-30

Low NOfuel injection for an indurating furnace

#206
20100162852
2010-07-01

METHOD AND APPARATUS FOR THE DIRECT REDUCTION OF IRON ORES UTILIZING SYNGAS

#207
20100050812
2010-03-04

Process for production of elemental iron

#208
20100031778
2010-02-11

Multiple hearth furnace for reducing iron oxide

#209
20100031776
2010-02-11

System and method of producing metallic iron

#210
20100011908
2010-01-21

PRESSURE CONTROL IN DIRECT SMELTING PROCESS

#211
20090320647
2009-12-31

Pressure control in direct smelting process

#212
20090308205
2009-12-17

DIRECT SMELTING PLANT WITH WASTE HEAT RECOVERY UNIT

#213
20090308204
2009-12-17

METHOD AND APPARATUS FOR REDUCING METALLIFEROUS MATERIAL TO A REDUCTION PRODUCT

#214
20090249922
2009-10-08

Process for the production of steel using a locally produced hydrogen as the reducing agent

#215
20090229414
2009-09-17

System and method for producing metallic iron

#216
20090211401
2009-08-27

Method for the direct reduction of iron oxides to metallic iron utilizing coke oven gas or the like

#217
20090160107
2009-06-25

Rotary hearth furnace and method of operating the same

#218
20090133535
2009-05-28

PROCESS FOR PRODUCTION OF ELEMENTAL IRON

#219
20090095132
2009-04-16

PROCESSING OF METAL CHLORIDE SOLUTIONS AND METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON

#220
20090013828
2009-01-15

Reduction process and plant

#221
20080295647
2008-12-04

Apparatus for manufacturing molten irons by injecting fine coals into a melter-gasifier and the method using the same

#222
20080277842
2008-11-13

Apparatus for manufacturing molten irons

#223
20070205544
2007-09-06

Rotary Hearth Sintering Furnace

#224
20070034055
2007-02-15

Method and apparatus for producing reduced metal

#225
20060196312
2006-09-07

Thermal synthesis production of steel

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20060196311
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