US 2002/0014724 A1Published application

Method of scrapping furnace bottom section of blast furnace

AssigneeKawasaki Steel Corporation AND Sankyu Inc.

InventorsHirotaka Kojima, Masao Fujita, Mitsuru Kiguchi, Hiroyuki Yasuhara, Yasuo Ochiai

Life of this patent

Estimating the term…

Loading patent…

Abstract

A solidified residual iron within a blast furnace is suspended up by employing a shell suspending device fixed to a tuyere arranged in a lower end portion of an upper portion of a furnace body suspended by a lift jack and a solidified residual iron suspending band, thereafter is descended by employing the lift jack and is mounted on a horizontally moving table. Subsequently, the horizontally moving table mounting the solidified residual iron thereon is moved onto a furnace outer truck rail from a furnace inner truck rail so as to be taken out of the furnace by operating a center hole jack arranged near the furnace outer truck rail, whereby an operation of taking out the solidified residual iron within the blast furnace out of the furnace is economically performed for a short time.

Claims14

Dependent claims

A method of scrapping a furnace bottom section of a blast furnace comprising the steps of:

horizontally cutting a furnace body of the blast furnace after being blown out at a position higher than a solidified residual iron left in the furnace bottom section;
suspending an upper furnace body above the cutting position by employing vertically moving means placed in a supporting column;
taking out at least a part of a shell and a lining brick in a lower furnace body below said cutting position all around the periphery;
and
thereafter conveying said solidified residual iron out of the furnace,
wherein said upper furnace body and said solidified residual iron are integrally connected by using a suspending device before conveying said solidified residual iron out of the furnace, and said upper furnace body and said solidified residual iron are vertically moved by using said vertically moving means.

3 more elements

Dependencies are inferred from the claim text.