Rotor and rotor shaft for molten metal
US-10138892-B2 · Nov 27, 2018 · US
Hood for Si-metal tapping
US11874064B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11874064-B2 |
| Application number | US-201816639970-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 22, 2018 |
| Priority date | Feb 22, 2018 |
| Publication date | Jan 16, 2024 |
| Grant date | Jan 16, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A hood for a taphole and a tapping spout in a submerged arc furnace in the production of silicon. The hood has at least two suction ducts which are placed asymmetrically on either side of the hood, and is useful in a process for the production of silicon in a submerged arc furnace, wherein liquid silicon and refining gas escape from a taphole of a crucible, wherein the liquid silicon flows on a tapping spout into a ladle, wherein the refining gas is sucked in a hood which has at least two suction ducts which are placed on either side of the hood.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the production of silicon in a submerged arc furnace, wherein liquid silicon and refining gas escape from a taphole of a crucible, wherein the liquid silicon flows on a tapping spout into a ladle, wherein the refining gas is suctioned off in a taphole hood attached to the furnace close to the taphole, the taphole hood having at least two suction ducts which are placed asymmetrically on either side of the hood. 2. The process of claim 1 , wherein one suction duct is placed close to the taphole, thus ventilating gas emitted from the crucible, and the other suction duct is placed over the ladle into which the liquid silicon flows, for capturing fume emitted by the refining process. 3. The process of claim 1 , wherein the refining or the tapping gas is suctioned off by pipes which are connected with the suction ducts, the pipes being oriented vertically immediately after their connection point on either side of the taphole hood. 4. The process of claim 1 , wherein the ducts have manhole openings. 5. The process of claim 1 , wherein the taphole hood walls are sloped. 6. The process of claim 3 , wherein the pipes extend vertically downwards. 7. The process of claim 1 , wherein the taphole hood is connected to a suction system which rotates together with the taphole hood and the crucible. 8. The process of claim 1 , wherein the taphole hood is connected to a dedicated suction system.
Assignees
Inventors
Classifications
specially adapted for electric arc furnaces · CPC title
Arrangements for treatment or cleaning of waste gases · CPC title
- F27D17/302Primary
Constructional details of ancillary components, e.g. waste gas conduits or seals · CPC title
- F27D17/002Primary
Mechanical Engineering · mapped topic
Purification (by zone-melting C30B13/00) · CPC title
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- What does patent US11874064B2 cover?
- A hood for a taphole and a tapping spout in a submerged arc furnace in the production of silicon. The hood has at least two suction ducts which are placed asymmetrically on either side of the hood, and is useful in a process for the production of silicon in a submerged arc furnace, wherein liquid silicon and refining gas escape from a taphole of a crucible, wherein the liquid silicon flows on a…
- Who is the assignee on this patent?
- Wacker Chemie Ag
- What technology area does this patent fall under?
- Primary CPC classification F27D17/302. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 16 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).