Specifications

The Patent Office Journal 17/12/2010
4492
(12) PATENT APPLICATION PUBLICATION (21) Application No.1399/MUM/2009 A
(19) INDIA
(22) Date of filing of Application :10/06/2009 (43) Publication Date : 17/12/2010
(54) Title of the invention : A NOVEL PROCESS FOR THE PRODUCTION OF MOLTEN IRON AND REDUCING GAS
(51) International classification :C21B13/00
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
Filing Date
:NA
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(71)Name of Applicant :
1)GHARDA KEKI HORMUSJI
Address of Applicant :GHARDA HOUSE, 48 HILL ROAD,
BANDRA (WEST), MUMBAI 400 050, Maharashtra India
(72)Name of Inventor :
1)GHARDA KEKI HORMUSJI
(57) Abstract :
Disclosed is a method for producing cast iron or semi steel and syngas/reducing gas in a high pressure refractory lined shaft furnace
using minimal or no coke. Iron ore and slag producing material are fed into the operative top zone of the shaft furnace while reducing
gas which is generated in a refractory lined gasifier using preheated oxygen is fed through tuyeres at the operative bottom and middle
zones. The shaft furnace is operated at a high pressure to increase productivity and to facilitate use of the spent reducing gas
downstream. Excess oxygen is fed to the shaft furnace to reduce the carbon content in the molten iron and generate semi steel. The
present invention provides an economical method for obtaining cast iron or semi steel which also substantially reduces the size of the
furnace.
No. of Pages : 24 No. of Claims : 19