Method of producing reduced metals and apparatus for reducing metal oxides
AssigneeKabushiki Kaisha Seiko Sho
InventorsHiroshi Sugitatsu, Hidetoshi Tanaka, Takao Harada
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Abstract
A method of producing reduced metals is disclosed in which a mixture of a metal oxide and a reducing agent is heated by a burner such that the metal oxide is reduced to a reduced metal. Dry-distilled gas generated during carbonization of an organic matter-containing component is used as fuel for the burner. The sensible heat of exhaust gas evolved by the burner is utilized as heat for carbonizing the organic matter-containing component. Carbide derived by carbonizing the organic matter-containing component is used as the above reducing agent. This method yields excellent cost performance. An apparatus for reducing metal oxides is also disclosed.
Claims9
A method of producing reduced metals from metal oxides comprising the step of:
- heating in a movable hearth furnace a mixture comprising a metal oxide and a reducing agent by means of a burner, thereby reducing said metal oxide to a reduced metal;
- wherein dry-distilled gas generated during carbonization of an organic matter-containing component is used as fuel for said burner, and
- wherein the sensible heat of exhaust gas evolved by said burner is used as heat for carbonizing said organic matter-containing component.
A method of producing reduced metals from metal oxides comprising the steps of:
- carbonizing an organic matter-containing component to prepare a carbide;
- and
- heating in a movable hearth furnace a mixture comprising a metal oxide and the carbide, thereby reducing said metal oxide to a reduced metal;
- wherein said metal oxide is fed together with said organic matter-containing component to carbonization furnace as heat media.
An apparatus for reducing metal oxides comprising:
- a carbonization furnace for carbonizing an organic matter-containing component, thereby generating dry-distilled gas;
- a movable hearth furnace for heating a mixture comprising a metal oxide and a reducing agent by means of a burner, thereby reducing said metal oxide;
- and
- a line for supplying said dry-distilled gas to said burner as fuel therefore from said carbonization furnace.
Dependencies are inferred from the claim text.