US 2006/0272452 A1 · Production of iron

Abstract

A process for producing desulphurised iron in a solid form is disclosed. The process includes the steps of (a) direct smelting an iron-containing metalliferous feed material and producing molten iron; (b) desulphurising molten iron produced in direct smelting step (a); and (c) casting desulphurised molten iron from desulphurisation step (b) into a solid form, such as pigs.

Claims37

Dependent claims

A process for producing iron in a solid form that includes the steps of:

(a) direct smelting an iron-containing metalliferous feed material and producing molten iron;
(b) desulphurising molten iron produced in direct smelting step (a);
and
(c) casting desulphurised molten iron from desulphurisation step (b) into a solid form, such as pigs.

1 more element

A process for producing iron in solid form that includes producing molten iron in a direct smelting vessel and suppling the molten iron to ladles at a ladle filling station and thereby producing ladles of molten iron and discharging molten iron from the ladles into a casting apparatus located remotely from said filling station;

and the process being characterised by the steps of:
(a) locating a first ladle at a first docking area of the ladle filling station and providing a supply of molten iron from the direct smelting vessel to the first ladle and producing a ladle of molten iron, desulphurising molten iron in the first ladle, and discharging the desulphurised molten iron from the first ladle into the casting apparatus;
(b) locating a second ladle at a second docking area of the ladle filling station and switching the supply of molten iron from the first ladle to the second ladle upon completing supply of molten iron to the first ladle and producing a ladle of molten iron, desulphursing the molten iron in the second ladle and discharging the desulphurised molten iron in the second ladle into the casting apparatus upon completion of discharging molten iron from the first ladle into the casting apparatus;
and
(c) continuing to locate ladles at the docking areas of the filling station and repeating the steps of supplying molten iron to the ladles, desulphurising the molten iron, and discharging the desulphurised molten iron into the casting apparatus so as to continuously supply molten iron to the filling station and to continuously discharge molten iron into the casting apparatus.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/405,586Filed 18 Apr 2006

Priority

AU 200590195018 Apr 2005

Published

7 Dec 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

C21C 7/064
Removing impurities by adding a treating agent: dephosphorising; Desulfurising
C21B 13/143
Multi-stage processes processes carried out in different vessels or furnaces: injection of partially reduced ore into a molten bath
C21C 1/02
Refining of pig-iron; Cast iron: dephosphorising or desulfurising
C21C 5/567
Manufacture of steel by other methods: operating in a continuous way

Abstract

Claims37

Dependent claims

A process for producing iron in a solid form that includes the steps of:

(a) direct smelting an iron-containing metalliferous feed material and producing molten iron;
(b) desulphurising molten iron produced in direct smelting step (a);
and
(c) casting desulphurised molten iron from desulphurisation step (b) into a solid form, such as pigs.

1 more element

and the process being characterised by the steps of:
(a) locating a first ladle at a first docking area of the ladle filling station and providing a supply of molten iron from the direct smelting vessel to the first ladle and producing a ladle of molten iron, desulphurising molten iron in the first ladle, and discharging the desulphurised molten iron from the first ladle into the casting apparatus;
(b) locating a second ladle at a second docking area of the ladle filling station and switching the supply of molten iron from the first ladle to the second ladle upon completing supply of molten iron to the first ladle and producing a ladle of molten iron, desulphursing the molten iron in the second ladle and discharging the desulphurised molten iron in the second ladle into the casting apparatus upon completion of discharging molten iron from the first ladle into the casting apparatus;
and
(c) continuing to locate ladles at the docking areas of the filling station and repeating the steps of supplying molten iron to the ladles, desulphurising the molten iron, and discharging the desulphurised molten iron into the casting apparatus so as to continuously supply molten iron to the filling station and to continuously discharge molten iron into the casting apparatus.

2 more elements

Dependencies are inferred from the claim text.

Production of iron

Life of this patent

Abstract

Claims37

Production of iron

Life of this patent

Abstract

Claims37