ClassID:

118769

C21B13/0093 - CPC Classification

Classification description:

Making spongy iron or liquid steel, by direct processes; Conditioning, transformation of reduced iron ores Protecting against oxidation

Recent Application in this class:
#1
20250109450
2025-04-03

METHOD AND DEVICE FOR PRODUCING DIRECT REDUCED METAL

#2
20240093330
2024-03-21

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

#3
20220259685
2022-08-18

SEALING A REDUCTION ASSEMBLY

#4
20220220572
2022-07-14

Process for the smelting of a metalliferous feedstock material

#5
20210301359
2021-09-30

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

#6
20210246521
2021-08-12

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

#7
20200080163
2020-03-12

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

#8
20190085420
2019-03-21

Direct reduced iron (DRI) heat treatment, products formed therefrom, and use thereof

#9
20180237870
2018-08-23

Binding process for pyrophoric steelmaking byproducts

#10
20170327397
2017-11-16

Method for treating animal waste

#11
20140238194
2014-08-28

Direct reduction of iron (DRI) pellet treatments

#12
20140196571
2014-07-17

Process and device for charging into a smelting unit

#13
20140182417
2014-07-03

Reclaiming and inhibiting activation of DRI dust and fines

#14
20130291682
2013-11-07

Reclaiming and inhibiting activation of DRI fines

#15
20130186155
2013-07-25

Method for treating animal waste

#16
20120313300
2012-12-13

Process and apparatus for producing metals and/or primary metal products

#17
20120279356
2012-11-08

Process and device for charging into a smelting unit

#18
20120111149
2012-05-10

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

#19
20110101577
2011-05-05

Conveyor system, composite system and method for coupling metallurgical methods

#20
20100068088
2010-03-18

Hot briquette iron and method for producing the same

#21
20090068488
2009-03-12

Granulated metallic iron superior in rust resistance and method for producing the same

#22
20080289450
2008-11-27

Conveyor system, composite system and method for coupling metallurgical methods

#23
20080047397
2008-02-28

Process and apparatus for producing metals and/or primary metal products