PROCESS FOR PREPARATION OF ORE, EQUIPMENT FOR PREPARATION THEREOF, IRONMAKING PROCESS AND IRONMAKING/STEELMAKING PROCESS

Title:

PROCESS FOR PREPARATION OF ORE, EQUIPMENT FOR PREPARATION THEREOF, IRONMAKING PROCESS AND IRONMAKING/STEELMAKING PROCESS

Document Type and Number:

WIPO Patent Application WO/2008/032634

Kind Code:

A1

Abstract:

The invention provides a process for the preparation of ore by which an ore can be improved so that the oxides of useful elements can be reduced more facilely; equipment for the preparation of ore; an ironmaking process; and an ironmaking/steelmaking process. The process comprises heating an ore containing water of crystallization (bound water) to remove the water of crystallization as water vapor and thus form a porous ore, bringing the porous ore into contact with a carbonization gas (organic gas) or organic fluid (such as coal tar) obtained by dry distillation of an organic substance (such as wood) to make the organic compounds (such as tar) contained in the carbonization gas or the organic fluid adhere to the surface of the porous ore, and heating the porous ore with the organic compounds adhering to the surface to 500°C or above to form an ore wherein part of the oxides of iron and other elements contained in the ore is reduced with carbon contained in the organic compounds. The reduced ore or the porous ore with organic compounds adhering to the surface is in such an improved state that the oxides of iron and other elements contained can be more facilely reduced in the smelting step in ironmaking or steelmaking.

More Like This:

JPH06212294	PRODUCTION OF SINTERED ORE
JPS57203725	PRETREATMENT OF SINTERING RAW MATERIAL

Inventors:

AKIYAMA TOMOHIRO
HATA YUICHI
HOSOKAI SOU
ZHANG XINGHE
HADI PURWANTO
HAYASHI JUNICHIRO
KASHIWAYA YOSHIAKI
UESUGI HIROSHI

Application Number:

PCT/JP2007/067388

Publication Date:

March 20, 2008

Filing Date:

September 06, 2007

Export Citation:

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Assignee:

BIO COKE LAB LTD (JP)
AKIYAMA TOMOHIRO
HATA YUICHI
HOSOKAI SOU
ZHANG XINGHE
HADI PURWANTO
HAYASHI JUNICHIRO
KASHIWAYA YOSHIAKI
UESUGI HIROSHI

International Classes:

C22B1/16; C10B53/02; C10K1/32; C21B5/00; C22B1/00; C22B1/02

Foreign References:

JP2003147419A	2003-05-21
JPH01247513A	1989-10-03
JPH05214414A	1993-08-24
JPS61253309A	1986-11-11
JPS63130727A	1988-06-02
JP2005336231A	2005-12-08
JPS637305A	1988-01-13
JPS6220809A	1987-01-29
JP2001327861A	2001-11-27

Other References: