Method for producing reduced form of metal oxide
AssigneeK.K. Sun Metalon
InventorsKazuhiko NISHIOKA, Yuki MAEDA, Kentaro HORI
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Abstract
Provided is a method for producing a reduced form of a metal oxide, the method being capable of preventing the production of carbon dioxide. The method for producing a reduced form of a metal oxide may use a partition member and a high-melting-point material, where the high-melting-point comprises an absorbent material and an insulation material.
Claims21
1-17. (canceled)
A method for producing a reduced form of a metal oxide, comprising irradiating a metal oxide and a high-melting-point material that is not in contact with the metal oxide with electromagnetic waves that are at least one of microwaves and millimeter waves to reduce at least a portion of the metal oxide,
- wherein a partition member is placed between the metal oxide and the high-melting-point material,
- the high-melting-point material has a melting point higher than the melting point of the metal oxide, and
- the high-melting-point material comprises:
- an absorbent material that absorbs the electromagnetic waves in a temperature range that is at least partially lower than a temperature range in which the metal oxide absorbs the electromagnetic waves, and
- an insulation material that has a lower degree of absorption of the electromagnetic waves than the metal oxide, and
- wherein the metal oxide and the high-melting-point material are separated by the partition member.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the partition member does not contain a carbon.
The method for producing a reduced form of a metal oxide according to claim 1, further comprising transferring heat of the high-melting-point material to the metal oxide through the partition member.
The method for producing a reduced form of a metal oxide according to claim 1, wherein in the reduction of at least a portion of the metal oxide, carbon monoxide (CO) is not supplied to the metal oxide.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the metal oxide is a powder.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the partition member is at least a portion of a container, and in the reduction of at least a portion of the metal oxide, the metal oxide is placed inside the container, and the high-melting-point material is placed outside the container.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the partition member is at least a portion of a container, and in the reduction of at least a portion of the metal oxide, the high-melting-point material is placed inside the container, and the metal oxide is placed outside the container.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the metal oxide is iron oxide.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the absorbent material comprises a carbon material.
The method for producing a reduced form of a metal oxide according to claim 1, wherein the insulation material comprises an oxide.
A method for producing a reduced form of a metal oxide, comprising:
- placing a partition member between a metal oxide to be reduced and a high-melting-point material comprising an insulation material and an absorbent material that absorbs electromagnetic waves in a temperature range lower than an electromagnetic wave absorption rate change temperature range of the metal oxide;
- and
- irradiating the metal oxide, the high-melting-point material, and the partition member with electromagnetic waves to heat the high-melting-point material and the metal oxide, thereby causing the metal oxide to undergo a reduction reaction;
- wherein the metal oxide and the high-melting-point material are separated by the partition member.
Dependencies are inferred from the claim text.