C21B9/14 - CPC Classification Index

ClassID:

118748 ⎘

C21B9/14 - CPC Classification

Classification description:

Stoves for heating the blast in blast furnaces Preheating the combustion air

Recent Application in this class:

20240018615

2024-01-18

METHOD FOR PRODUCING PIG IRON IN A SHAFT FURNACE

20180340237

2018-11-29

Top combustion stove

20170002434

2017-01-05

Method for operating a top gas recycling blast furnace installation

20160348904

2016-12-01

Selective oxy-fuel boost burner system and method for a regenerative furnace

20160145700

2016-05-26

METHOD FOR HEATING A BLAST FURNACE STOVE

20160024604

2016-01-28

METHOD FOR HEATING A BLAST FURNACE STOVE

20150329928

2015-11-19

Method and apparatus for supplying blast to a blast furnace

20140252696

2014-09-11

Method of operating regenerative heaters in blast furnace plant

20140162205

2014-06-12

PREHEATING OXYGEN FOR INJECTION INTO BLAST FURNACES

#10

20140011152

2014-01-09

Top-firing hot blast stove

#11

20140004475

2014-01-02

Top-firing hot blast stove

#12

20130196277

2013-08-01

Regenerative Air Heater And Method of Operation

#13

20120064471

2012-03-15

Method for operating a regenerative heater

#14

20110073023

2011-03-31

Exhaust processing and heat recovery system

#15

20100323314

2010-12-23

Hot air stove

#16

20090320647

2009-12-31

Pressure control in direct smelting process

#17

20050087038

2005-04-28

Methods and apparatuses for integration of a blast furnace and an air separation unit