"Oxygen Injection In Sponge Iron Production"

Abstract: Iron ore, carbonaceous reducing agent and dolomite are fed into the feed end of an elongated rotary furnace, finely divided coal into the discharge end of the furnace and gaseous oxidant having an oxygen content higher than that of air are into the reducing zone of the furnace via the end burner at its discharge end, and/or into the shell air fans mounted on the furnace, and combusted. The gaseous oxidant may also be fed via a lance place in the reducing zone of the furnace. The iron ore is heated by complete and incomplete combustion of said carbonaceous reducing agent and of said finely divided coal, and the heated iron ore passes to said reducing zone, wherein it is reduced to metallic iron by reaction with said carbonaceous reducing agent, with products of said incomplete combustion, and with said finely divided coal.

Patent Information

Application #

Filing Date

19 January 2011

Publication Number

36/2013

Publication Type

INA

Invention Field

METALLURGY

Status

Email

remfry-sagar@remfry.com

Parent Application

Applicants

PRAXAIR INDIA PRIVATE LIMITED

PRAXAIR HOUSE, NO. 8, ULSOOR ROAD, BENGALURA-560 042, INDIA

Inventors

1. ARUP NANDI

FLAT #301, BLOCK B, ZEPHYR, SUNCITY APARTMENTS, SARJAPUR ROAD-OUTER RING ROAD JUNCTION, IBBLUR, BENGALORE, KARNATAKA, 560066, INDIA

Specification

Documents

Application Documents

#	Name	Date
1	134-DEL-2011-AbandonedLetter.pdf	2017-11-13
1	134-del-2011-Form-18-(20-06-2011).pdf	2011-06-20
2	134-DEL-2011-FER.pdf	2017-03-30
2	134-del-2011-Correspondence Others-(20-06-2011).pdf	2011-06-20
3	134-del-2011-Form-1-(29-06-2011).pdf	2011-06-29
3	134-del-2011-Abstract.pdf	2011-11-23
4	134-del-2011-Correspondence-Others-(29-06-2011).pdf	2011-06-29
4	134-del-2011-Claims.pdf	2011-11-23
5	134-del-2011-Correspondence Others-(29-06-2011).pdf	2011-06-29
6	134-DEL-2011-GPA-(01-09-2011).pdf	2011-09-01
7	134-DEL-2011-Correspondence-Others-(01-09-2011).pdf	2011-09-01
8	134-del-2011-Form-5.pdf	2011-11-23
9	134-del-2011-Form-3.pdf	2011-11-23
10	134-del-2011-Form-2.pdf	2011-11-23
11	134-del-2011-Form-1.pdf	2011-11-23
12	134-del-2011-Drawings.pdf	2011-11-23
13	134-del-2011-Description (Complete).pdf	2011-11-23
14	134-del-2011-Correspondence-Others.pdf	2011-11-23
15	134-del-2011-Claims.pdf	2011-11-23
16	134-del-2011-Abstract.pdf	2011-11-23
17	134-DEL-2011-FER.pdf	2017-03-30
18	134-DEL-2011-AbandonedLetter.pdf	2017-11-13

Search Strategy

1	134del2011searchstreatgy_17-01-2017.pdf