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1. (WO2017186782) METHOD FOR PRODUCING LIQUID PIG IRON

Pub. No.:    WO/2017/186782    International Application No.:    PCT/EP2017/059908
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Thu Apr 27 01:59:59 CEST 2017
IPC: C21B 13/14
C21B 13/00
Applicants: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Inventors: MILLNER, Robert
PANHUBER, Wolfgang
REIN, Norbert
ROSENFELLNER, Gerald
WURM, Johann
HOLZLEITHNER, Franz
Title: METHOD FOR PRODUCING LIQUID PIG IRON
Abstract:
The invention relates to a method for producing liquid pig iron (1), wherein the method comprises reducing iron-oxide-containing feed materials (2) to form a partially reduced first iron product (3) in a first reduction system (4), introducing the partially reduced first iron product (3), a first oxygen-containing gas (9, 9a), and a first carbon carrier (10) into a melter gasifier (11), introducing a second gaseous and/or liquid carbon carrier (13) and a second oxygen-containing gas (9b) into a mixing region (18) within the melter gasifier (11) above the fixed bed of the melter gasifier, mixing the second gaseous and/or liquid carbon carrier (13) with the second oxygen-containing gas (9b) in the mixing region (18), wherein the combustion air ratio is set in the range of 0.2 to 0.4, preferably between 0.3 and 0.35, in order to achieve partial oxidation of the second gaseous or liquid carbon carrier (13) within the mixing region (18), and mixing the gas resulting from the partial oxidation from the mixing region (18) with the gas in the remaining volume within the melter gasifier (11).