EP 0207779 A3 19881207 - DIRECT REDUCTION PROCESS USING SHAFT FURNACE

Title (en)

DIRECT REDUCTION PROCESS USING SHAFT FURNACE

Publication

EP 0207779 A3 19881207 (EN)

Application

EP 86305084 A 19860701

Priority

JP 14564185 A 19850702

Abstract (en)

[origin: EP0207779A2] A direct reduction process using a vertical furnace is disclosed in which iron ore (including lump ore and pellets) charged in the furnace is previously treated with a cement coating applied to the surface of the ore. The cement may be Portland cement and is used in a quantity within a predetermined range.

IPC 1-7

C21B 13/00; C21B 13/02; C22B 1/24

IPC 8 full level

C21B 13/02 (2006.01); C21B 5/00 (2006.01); C21B 13/00 (2006.01); C22B 1/14 (2006.01); C23C 4/04 (2006.01)

CPC (source: EP)

C21B 5/008 (2013.01); C21B 13/008 (2013.01); C23C 4/04 (2013.01)

Citation (search report)

[X] DE 2061346 A1 19720622
[A] DE 1186089 B 19650128 - METALLGESELLSCHAFT AG
[A] US 2869850 A 19590120 - WIENERT FRITZ O
[A] JAPANESE PATENTS REPORT, Section M, vol. 75, no. 38, 17th October 1975, page 1, Derwent Publications Ltd, London, GB; & JP-A-50 028 050 (NIPPON KOKAN K.K.) 12-09-1975

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0207779 A2 19870107; EP 0207779 A3 19881207; EP 0207779 B1 19900314; DE 3669533 D1 19900419; JP H0582447 B2 19931119; JP S627806 A 19870114; MY 102683 A 19921130

DOCDB simple family (application)

EP 86305084 A 19860701; DE 3669533 T 19860701; JP 14564185 A 19850702; MY PI19871176 A 19870729