Title of Invention

"A PROCEDURE FOR STARTING UP A DIRECT SMELTING PROCESS".

Abstract A procedure for starting up a direct smelting process for producing iron from a metalliferous feed material in a metallurgical vessel is disclosed.The vessel has a plurality of feed material injection lances/tuyeres (11,13).The start-up procedure comprises the steps of : a) preheating the vessel; b) supplying a charge of molten iron and forming a molten bath in the vessel; c) supplying carbonaceous material and flux to the molten bath and injecting oxygen-containing gas through one or more than one feed material injection lance/tuyere and combusting carbon and bath derived gas, and thereby heating the molten bath and generatring slag, and increasing the carbon concentration in the molten bath; and d) when prescribed conditions, such as any one or more of molten bath temperature, carbon concentration in the molten bath and post combustion levels, reach a predetermined threshold, supplying metalliferous feed material and flux and injection of oxygen-containing gas and smelting metalliferous feed material and producing molten iron and thereby completing the start-up procedure. See figure ___________
Full Text

Documents:


Patent Number 201104
Indian Patent Application Number 00369/CAL/2000
PG Journal Number 11/2007
Publication Date 16-Mar-2007
Grant Date 16-Mar-2007
Date of Filing 28-Jun-2000
Name of Patentee TECHNOLOGICAL RESOURCES PTY. LTD.,
Applicant Address 55 COLLINS STREET, MELBOURNE, VICTORIA 3000 AUSTRALIA
Inventors:
# Inventor's Name Inventor's Address
1 BATES CECIL PETER 12A COOGEE ROAD MT PLEASANT , WESTERN AUSTRALIAN 6153
2 BURKE PETER DAMIAN, 16 YELDON TOR, WINTHROP WESTERN AUSTRALIA 6150,
PCT International Classification Number C21B, 13/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 PQ1522 1999-07-09 Australia