C21B13/105 - CPC Classification Index

#1

20240279757

2024-08-22

DIRECT BATH SMELTING PROCESS WITH FAST QUENCH OF MOLTEN MATERIAL IN HOT OFFGAS

#2

20200291494

2020-09-17

Reduced iron production method

#3

20190301800

2019-10-03

Rotary hearth furnace, and method for producing reduced iron using rotary hearth furnace

#4

20170335416

2017-11-23

METHOD OF PRODUCTION AND APPARATUS FOR PRODUCTION OF REDUCED IRON

#5

20170198365

2017-07-13

Rotary hearth furnace

#6

20170073781

2017-03-16

Production method of granular metallic iron

#7

20160237514

2016-08-18

METHOD FOR MANUFACTURING IRON NUGGETS

#8

20150322542

2015-11-12

Method for producing reduced iron

#9

20150275323

2015-10-01

PRODUCTION OF PIG IRON

#10

20150115508

2015-04-30

Burning apparatus and method for manufacturing reduced iron using the same

#11

20150027275

2015-01-29

Process for manufacturing reduced iron agglomerates

#12

20140352494

2014-12-04

Methods and systems for producing ferro-chrome in a duplex furnace

#13

20140331821

2014-11-13

Producing of pig iron from iron-containing materials

#14

20130154167

2013-06-20

Rotary hearth furnace exhaust gas duct apparatus and method for operating same

#15

20130098204

2013-04-25

Method for producing granular metallic iron

#16

20130055853

2013-03-07

METHOD FOR PRODUCING METALLIC IRON

#17

20130047787

2013-02-28

CARBON-MATERIAL-CONTAINING IRON OXIDE BRIQUETTE COMPOSITION, METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING DIRECT REDUCED IRON USING THE SAME

#18

20120325053

2012-12-27

Apparatus and methods for producing direct reduced iron

#19

20120285295

2012-11-15

METHOD FOR PRODUCING METALLIC IRON NUGGETS

#20

20120279353

2012-11-08

SYSTEM AND METHOD FOR PRODUCING METALLIC IRON

#21

20120256359

2012-10-11

METHOD OF SETTING TEMPERATURE OF CONTINUOUS HEATING FURNACE AND METHOD OF CONTROLLING FURNACE TEMPERATURE

#22

20120205840

2012-08-16

Method and apparatus for manufacturing granular metallic iron

#23

20120192679

2012-08-02

System and method for producing metallic iron

#24

20120186395

2012-07-26

METHOD FOR PRODUCING BRIQUETTES, METHOD FOR PRODUCING REDUCED METAL, AND METHOD FOR SEPARATING ZINC OR LEAD

#25

20120103136

2012-05-03

APPARATUS AND METHOD FOR PRODUCING REDUCED IRON FROM ALKALI-CONTAINING IRONMAKING DUST SERVING AS MATERIAL

#26

20120064371

2012-03-15

Refractory lining for titanium ore beneficiation

#27

20120031232

2012-02-09

Method and apparatus for coproduction of pig iron and high quality syngas

#28

20120007292

2012-01-12

METHOD AND APPARATUS FOR PRODUCING REDUCED METAL

#29

20120006449

2012-01-12

METHOD FOR PRODUCING METALLIC IRON

#30

20110265603

2011-11-03

METHOD FOR PRODUCING GRANULAR IRON

#31

20110226092

2011-09-22

Process for producing molten iron and apparatus for producing molten iron

#32

20110197712

2011-08-18

Method of coal gasification and direct ironmaking and system therefor

#33

20110113926

2011-05-19

Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead

#34

20110107874

2011-05-12

Method for producing briquette, method for producing reduced metal, and method for separating zinc or lead

#35

20110100162

2011-05-05

Method and system for producing metallic iron nuggets

#36

20110036204

2011-02-17

METHOD FOR PRODUCING REDUCED IRON

#37

20110024681

2011-02-03

TITANIUM OXIDE-CONTAINING AGGLOMERATE FOR PRODUCING GRANULAR METALLIC IRON

#38

20110023657

2011-02-03

Process for producing reduced iron pellets, and process for producing pig iron

#39

20110023656

2011-02-03

METHOD FOR PRODUCING GRANULAR METALLIC IRON

#40

20100313710

2010-12-16

Method and apparatus for manufacturing granular metallic iron

#41

20100300247

2010-12-02

Method for producing reduced metal and slag containing oxidized nonferrous metal using an upgraded coal

#42

20100294079

2010-11-25

Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility

#43

20100285326

2010-11-11

ORE REDUCTION PROCESS AND TITANIUM OXIDE AND IRON METALLIZATION PRODUCT

#44

20100237280

2010-09-23

Ore reduction process using carbon based materials having a low sulfur content and titanium oxide and iron metallization product therefrom

#45

20100224028

2010-09-09

Method for producing hot briquette iron using high-temperature reduced iron and method and apparatus for controlling temperature of reduced iron for hot forming

#46

20100218646

2010-09-02

Producing method of direct reduced iron

#47

20100199806

2010-08-12

Method of producing reduced iron cast, and method of producing pig iron

#48

20100192726

2010-08-05

Method for reduction treatment of electric furnace dust

#49

20100186644

2010-07-29

EXHAUST GAS PROCESSING SYSTEM AND METHOD FOR ROTARY HEARTH TYPE REDUCING FURNACE

#50

20100171072

2010-07-08

METHOD FOR MANUFACTURING GRANULAR METALLIC IRON

#51

20100164150

2010-07-01

Method and system for producing metallic iron nuggets

#52

20100107818

2010-05-06

System and method for producing metallic iron nodules

#53

20100031776

2010-02-11

System and method of producing metallic iron

#54

20090282950

2009-11-19

PROCESS FOR PRODUCING METALLIC IRON

#55

20090217784

2009-09-03

Ore reduction process and titanium oxide and iron metallization product

#56

20090193933

2009-08-06

Pre-Processing Materials Using Encapsulation Technologies

#57

20090183600

2009-07-23

Method for producing metallic iron

#58

20090175753

2009-07-09

Method and system for producing metallic iron nuggets

#59

20090160107

2009-06-25

Rotary hearth furnace and method of operating the same

#60

20090127754

2009-05-21

Hearth structure of rotary furnace hearth

#61

20090090216

2009-04-09

Process for producing molten iron and apparatus for producing molten iron

#62

20090045558

2009-02-19

Screw conveyor of rotary hearth furnace for discharging reduced iron

#63

20090031859

2009-02-05

Method for producing metallic iron

#64

20090025511

2009-01-29

Method and apparatus for making metallic iron

#65

20080127778

2008-06-05

Process for producing molten iron

#66

20080087135

2008-04-17

Method for reducing iron oxide and producing syngas

#67

20080069763

2008-03-20

Method for manufacturing titanium oxide-containing slag

#68

20070295165

2007-12-27

Process for Producing Molten Iron and Apparatus Therefor

#69

20070258843

2007-11-08

METALLIC IRON NUGGETS

#70

20070227301

2007-10-04

Metallic iron nuggets

#71

20070205544

2007-09-06

Rotary Hearth Sintering Furnace

#72

20070113708

2007-05-24

FERRONICKEL AND PROCESS FOR PRODUCING RAW MATERIAL FOR FERRONICKEL SMELTING

#73

20070068344

2007-03-29

Ore reduction process and titanium oxide and iron metallization product

#74

20070051203

2007-03-08

Method for discharging reduced product from a movable-hearth furnace and a discharging device

#75

20070034055

2007-02-15

Method and apparatus for producing reduced metal

#76

20060278041

2006-12-14

Method for producing improved coal for use in metallurgy, and method for producing reduced metal and slag containing oxidized nonferrous metal

#77

20060248981

2006-11-09

Granular metallic iron

#78

20060218753

2006-10-05

Method of producing iron oxide pellets

#79

20060169103

2006-08-03

Process for producing particulate iron metal

#80

20060150775

2006-07-13

Method and system for producing metallic iron nuggets

#81

20060150774

2006-07-13

Method and system for producing metallic iron nuggets

#82

20060150773

2006-07-13

Method and system for producing metallic iron nuggets

#83

20060150772

2006-07-13

Method and system for producing metallic iron nuggets

#84

20060147866

2006-07-06

Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure

#85

20060096675

2006-05-11

Method for producing metallic iron

#86

20060096419

2006-05-11

Method for reduction treatment of metal oxide or ironmaking waste and method for concentration and recovery zinc and/or lead

#87

20060070495

2006-04-06

Granular metallic iron

#88

20060021469

2006-02-02

Process for producing molten iron

#89

20050252340

2005-11-17

Furnace sidewall structure of rotary hearth furnace

#90

20050211020

2005-09-29

Ferronickel and process for producing raw material for ferronickel smelting

#91

20050103160

2005-05-19

Method for discharging reduced product from a movable-hearth furnace and a discharging device

#92

20050087039

2005-04-28

Method for producing metallic iron

#93

20050028643

2005-02-10

Method for producing titanium oxide containing slag