Electric furnace
US-2020064071-A1 · Feb 27, 2020 · US
Electric furnace
US2020080780A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020080780-A1 |
| Application number | US-201716468615-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 10, 2017 |
| Priority date | Dec 16, 2016 |
| Publication date | Mar 12, 2020 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention provides an electric furnace including: a furnace body that includes an electrode; and a slag holding furnace that is configured to hold molten slag in a molten state and is capable of pouring the molten slag into the furnace body when tilted, in which the furnace body includes a cylindrical furnace wall, a furnace cover that is provided at an upper end of the furnace wall, a furnace bottom that is provided at a lower end of the furnace wall and includes a deep bottom portion and a shallow bottom portion as a region having a height of 150 mm to 500 mm from a deepest point of the deep bottom portion, and a slag pouring port that is provided at the furnace cover and through which the molten slag is poured from the slag holding furnace, the slag pouring port overlaps the shallow bottom portion in a plan view, and the area ratio of the shallow bottom portion to the furnace bottom in a plan view is 5% to 40%.
First claim
Opening claim text (preview).
1 . An electric furnace comprising: a furnace body that includes an electrode; and a slag holding furnace that is configured to hold molten slag in a molten state and is capable of pouring the molten slag into the furnace body when tilted, wherein the furnace body includes a cylindrical furnace wall, a furnace cover that is provided at an upper end of the furnace wall, a furnace bottom that is provided at a lower end of the furnace wall and includes a deep bottom portion and a shallow bottom portion as a region having a height of 150 mm to 500 mm from a deepest point of the deep bottom portion, and a slag pouring port that is provided at the furnace cover and through which the molten slag is poured from the slag holding furnace, the slag pouring port overlaps the shallow bottom portion in a plan view, and an area ratio of the shallow bottom portion to the furnace bottom in a plan view is 5% to 40%. 2 . The electric furnace according to claim 1 , wherein the furnace wall further includes a main body having an annular cross-sectional shape perpendicular to a height direction, and a projected portion that is configured to project in a radial direction of the main body, the shallow bottom portion is provided at a lower end of the projected portion, and the slag pouring port is provided at an upper end of the projected portion. 3 . The electric furnace according to claim 1 , wherein the furnace wall has a main body having an annular cross-sectional shape perpendicular to a height direction, and the shallow bottom portion is provided at a lower end of the main body. 4 . The electric furnace according to claim 1 , further comprising: a reducing material feeding port that is provided at the furnace cover or at both the furnace cover and the furnace wall and through which a reducing material is added into the electric furnace.
Assignees
Inventors
Classifications
- F27B3/183Primary
Charging of arc furnaces vertically through the roof, e.g. in three points · CPC title
Charging of the electric furnace · CPC title
Working-up slag · CPC title
- F27B3/08Primary
heated electrically, with or without any other source of heat · CPC title
Manufacture of steel in the converter {(C21C5/005 takes precedence)} · CPC title
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Frequently asked questions
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- What does patent US2020080780A1 cover?
- The present invention provides an electric furnace including: a furnace body that includes an electrode; and a slag holding furnace that is configured to hold molten slag in a molten state and is capable of pouring the molten slag into the furnace body when tilted, in which the furnace body includes a cylindrical furnace wall, a furnace cover that is provided at an upper end of the furnace wall…
- Who is the assignee on this patent?
- Nippon Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification F27B3/183. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Mar 12 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).