ClassID:

118760

C21B13/0033 - CPC Classification

Classification description:

Making spongy iron or liquid steel, by direct processes In fluidised bed furnaces or apparatus containing a dispersion of the material

Recent Application in this class:
#1
20260078457
2026-03-19

FLUIDIZED BED IRONMAKING PROCESS AND SYSTEM

#2
20250283186
2025-09-11

METHOD FOR THE DIRECT REDUCTION OF IRON ORE

#3
20250257416
2025-08-14

METHOD FOR THE DIRECT REDUCTION OF IRON ORE

#4
20250214026
2025-07-03

SYSTEM FOR CARBON DIOXIDE CAPTURE AND CARBON RECYCLING FOR STEEL MILL

#5
20250163525
2025-05-22

METHOD OF REDUCING IRON ORE POWDER

#6
20250051866
2025-02-13

A METHOD FOR PRODUCING IRON FUEL

#7
20250051865
2025-02-13

REDUCTION OF IRON ORE METAL AND REACTOR FOR SAID REDUCTION

#8
20250034666
2025-01-30

IRON RECOVERY

#9
20250027178
2025-01-23

FACILITY FOR PRODUCING REDUCED IRON AND METHOD FOR PRODUCING REDUCED IRON

#10
20250011888
2025-01-09

METHOD FOR REDUCING CARBON FOOTPRINT IN OPERATING A METALLURGICAL PLANT FOR PRODUCING PIG IRON

#11
20240410027
2024-12-12

METHOD FOR PRODUCING DIRECT REDUCTION IRON

#12
20240360525
2024-10-31

Enrichment of Iron from Bauxite Waste in Chemical Looping Combustion

#13
20240352547
2024-10-24

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

#14
20240344155
2024-10-17

METHOD FOR PRODUCING AN IRON MELT

#15
20240327946
2024-10-03

Suspension roasting system and method for industrial processing of iron and manganese ores

#16
20240327937
2024-10-03

PROCESSES AND METHODS FOR THE PRODUCTION OF IRON AND STEEL

#17
20240026475
2024-01-25

Hydrogen reduction of iron ore concentrate in loose layers and compacts

#18
20230235418
2023-07-27

METHOD AND DEVICE FOR PRODUCING DIRECT REDUCED METAL

#19
20230203606
2023-06-29

Biomass Direct Reduced Iron

#20
20220389528
2022-12-08

Method for the direct reduction of iron ore

#21
20220220572
2022-07-14

Process for the smelting of a metalliferous feedstock material

#22
20220145412
2022-05-12

Method for direct reduction in a fluidized bed

#23
20220002826
2022-01-06

Device for manufacturing molten iron

#24
20200216921
2020-07-09

Reduction gas extraction from saturated top gas

#25
20180010202
2018-01-11

Method for manufacturing reduced iron

#26
20160369360
2016-12-22

System and method for fluidized reduction of iron ore powder

#27
20160348199
2016-12-01

Pneumatic ore charging

#28
20160348198
2016-12-01

System and method for fluidized direct reduction of iron ore concentrate powder

#29
20160348197
2016-12-01

System and method for fluidized bed reduction of powdered iron ore

#30
20160258687
2016-09-08

DUCTING FOR MANUFACTURE OF IRON

#31
20160186276
2016-06-30

Method and apparatus for recycling top gas for shaft furnace

#32
20160024611
2016-01-28

Method for recycling iron-containing by-products discharged from coal-based molten ironmaking process, system therefor, and reduced iron agglomeration system

#33
20160002744
2016-01-07

Direct reduction process with improved product quality and process gas efficiency

#34
20150135899
2015-05-21

Method and device for introducing fine particle-shaped material into the fluidised bed of a fluidised bed reduction unit

#35
20150114180
2015-04-30

APPARATUS AND PROCESS FOR SURFACE GASIFICATION IN A REDUCTION REATOR SHAFT

#36
20140260803
2014-09-18

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

#37
20140219877
2014-08-07

Device with several reaction chambers for implementing liquid/solid oxidation-reduction reactions in a fluidized bed

#38
20130118306
2013-05-16

Process and plant for producing hot metal

#39
20130019716
2013-01-24

Process and apparatus for reducing charge materials containing iron ore or for producing pig iron or liquid primary steel products

#40
20120328465
2012-12-27

Process and apparatus for producing pressed articles

#41
20120174711
2012-07-12

Apparatus for manufacturing reduced iron and method for manufacturing the same

#42
20120111149
2012-05-10

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

#43
20110285067
2011-11-24

METHOD FOR PRODUCING LIQUID PIG IRON OR LIQUID STEEL INTERMEDIATE PRODUCTS FROM FINE-PARTICLED MATERIAL CONTAINING IRON OXIDE

#44
20110087204
2011-04-14

Cryoplasty device and method

#45
20100269636
2010-10-28

Direct reduction apparatus and process

#46
20100074805
2010-03-25

Plant for the heat treatment of solids containing titanium

#47
20100044933
2010-02-25

Method and plant for the heat treatment of solids containing iron oxide

#48
20090320647
2009-12-31

Pressure control in direct smelting process

#49
20090308204
2009-12-17

METHOD AND APPARATUS FOR REDUCING METALLIFEROUS MATERIAL TO A REDUCTION PRODUCT

#50
20090095132
2009-04-16

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

#51
20090090217
2009-04-09

Method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide

#52
20090039573
2009-02-12

Distributor base

#53
20090008841
2009-01-08

Apparatus for manufacturing molten irons

#54
20080302212
2008-12-11

Apparatus for manufacturing molten irons

#55
20080290566
2008-11-27

Method and device for producing pig iron and/or pig iron intermediate products

#56
20080277842
2008-11-13

Apparatus for manufacturing molten irons

#57
20080229881
2008-09-25

Direct reduction process

#58
20080210055
2008-09-04

Direct reduction apparatus and process

#59
20080196549
2008-08-21

Direct reduction process using a single fluidised bed

#60
20070256519
2007-11-08

Direct reduction process and apparatus

#61
20070245853
2007-10-25

Method for reducing a particulate material containing a metal, especially iron ore

#62
20070079666
2007-04-12

Process and plant for reducing solids containing iron oxide

#63
20060230880
2006-10-19

Method and plant for the heat treatment of solids containing iron oxide

#64
20060178663
2006-08-10

Cryoplasty device and method

#65
20060162500
2006-07-27

Fluidized bed method and plant for the heat treatment of solids containing titanium

#66
20060119023
2006-06-08

Apparatus for manufacturing molten irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same

#67
20060119022
2006-06-08

Apparatus for manufacturing molten irons to dry and convey iron ores and additives and manufacturing method using the same

#68
20050126341
2005-06-16

Method and device for producing pig iron and/or pig iron intermediate products

#69
20050092130
2005-05-05

Process and apparatus for the direct reduction of iron oxides in an electrothermal fluidized bed and resultant product

#70
20050053529
2005-03-10

Method and device for treating a fine-particled feedstock especially containing metal