Patent US3684005A successfully refreshed from Google Patents.
US3684005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the solidification of molten sulphur
Assignee: Procor Ltd
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Filing: 1970-04-21
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Granted: 1972-08-15
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Expires: 1990-04-21
Abstract
Abstract A method and apparatus for the solidification of molten sulphur involves feeding a layer of molten sulphur onto the normally upper surface of a movable member such as a belt. The belt is provided with a surface to which is applied a thin layer of water which inhibits the adherence of solidified or partly solidified sulphur thereto during the cooling and solidification stages. One method of cooling the sulphur is accomplished by tilting the surface of the movable member at selected points along its length so as to cause the molten sulphur to flow transversely from one side of the surface to the other. Another cooling and solidifying method involves dipping or sequential dipping of the sulphur layer into a bath or series of baths of water arranged along the surface of the movable belt. A lamination of sulphur layers may also be formed by the application of overlapping layers on the initial layer.
Inventors
- 👤 Ernest Ellithorpe
- 👤 Ronald B Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/0216
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
24 words
A method as claimed in claim 1 wherein the layer of molten sulphur is sequentially contacted a plurality of times with said cooling bath.
Claim 2
Dependent Claim
55 words
A method as claimed in claim 1 including the step of partially cooling said molten layer by contact with said bath and thereafter applying at least one additional layer of molten sulphur in substantially overlapping relationship to the first layer, subsequently cooling said additional layer so as to form a solid lamination of sulphur layers.
Claim 3
Dependent Claim
55 words
A method as claimed in claim 2 including the step of partially cooling said molten layer by contact with said bath and thereafter applying at least one additional layer of molten sulphur in substantially overlapping relationship to the first layer, subsequently cooling said additional layer so as to form a solid lamination of sulphur layers.
Claim 4
Dependent Claim
31 words
A method as claimed in claim 1 including the step of forming on the support surface a thin film of water sufficient to inhibit the firm adherence of molten sulphur thereto.
Claim 5
Dependent Claim
30 words
A method as claimed in claim 2 including the step of applying to the support surface a thin film of water sufficient to inhibit the adherence of solidified sulphur thereto.
Claim 6
Dependent Claim
42 words
A method as claimed in claim 1 wherein the molten sulphur is first subjected to a preliminary cooling step by being delivered onto a cooling ladder and allowed to flow downwardly by gravity thereon prior to being fed onto said support surface.
Claim 7
Dependent Claim
42 words
A method as claimed in claim 2 wherein the molten sulphur is first subjected to a preliminary cooling step by being delivered onto a cooling ladder and allowed to flow downwardly by gravity thereon prior to being fed onto said support surface.
Claim 8
Dependent Claim
32 words
A method as claimed in claim 1 including the additional step of directing cooling air onto the surface of the molten sulphur prior to contact of the sulphur with the cooling bath.
Claim 9
Dependent Claim
25 words
A method as claimed in claim 1 including the step of directing cooling air onto the sulphur subsequent to its contact with said cooling bath.
Claim 10
Independent Claim
133 words
A method of solidifying molten sulphur comprising the steps of: feeding molten sulphur onto a cooling ladder and allowing the molten sulphur to flow downwardly by gravity thereon into a holding tank disposed therebeneath; selectivEly withdrawing molten sulphur from said holding tank and applying a layer thereof to the normally upper surface of a moving belt, said surface being provided with a thin layer of water sufficient to inhibit the adherence of solidified sulphur thereto; laterally tilting the support surface at selected longitudinally spaced points to cause transverse flow of the molten sulphur alternately from one side of the surface to the other; passing said layer of molten sulphur sequentially through a cooling bath to facilitate cooling and solidification of the molten sulphur; and removing solidified or partially solidified sulphur from said surface.
References Cited (Backward Citations)
US1419911A
Cited
US2808236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |