US3814407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slag skimming apparatus
Assignee: GRANT L Inc
•
Filing: 1973-05-18
•
Granted: 1974-06-04
•
Expires: 1993-05-18
Abstract
Abstract Apparatus for skimming slag from molten iron poured from a submarine ladle or the like is comprehended in a frame attachable to a submarine ladle in communication with the port thereof. The frame holds a diversion trough, into an end of which the iron is poured when the ladle is tilted, the diversion trough having perforations in its bottom, a collecting trough positioned below the diversion trough so as to receive the iron therefrom and direct it to a transfer ladle, and an open-end slag collecting basket positioned in the diversion trough having a skimmer lip at its open end. The perforations in the diversion trough retard the flow of iron sufficiently to maintain a dynamic pool of iron therein, which buoys the open end of the slag collecting basket so as to maintain its skimmer lip at a skimming level.
Inventors
- 👤 L Meyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:44
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1545; F27D3/159
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
60 words
Apparatus for separating floating slag from a stream of molten metal comprising means for forming a dynamic pool of the metal, a slag receptacle having an upstream open end and a downstream closed end, and means positioning the receptacle so that its open end is buoyed by the dynamic pool and so that it retains slag which flows into it.
Claim 2
Dependent Claim
60 words
Apparatus for separating floating slag from a stream of molten metal comprising means for forming a dynamic pool of the metal, a slag receptacle having an upstream open end and a downstream closed end, and means positioning the receptacle so that its open end is buoyed by the dynamic pool and so that it retains slag which flows into it.
Claim 3
Dependent Claim
16 words
Apparatus of claim 1 in which the bottom of the slag receptacle is arcuate in cross-section.
Claim 4
Dependent Claim
14 words
Apparatus of claim 1 in which the slag receptacle is an open ended cylinder.
Claim 5
Dependent Claim
33 words
Apparatus of claim 1 in which the inner wall surface of the slag receptacle is cylindrical and the wall is thicker at the closed end of the receptacle than at its open end.
Claim 6
Dependent Claim
32 words
Apparatus of claim 1 including a relatively sharp lipped skimmer affixed to the open end of the slag receptacle arranged to skim floating slag off the molten iron into the slag receptacle.
Claim 7
Dependent Claim
29 words
Apparatus of claim 5 in which the underside of the skimmer is inclined away and downstream from its lip so as to direct molten metal beneath the slag receptacle.
Claim 8
Dependent Claim
15 words
Apparatus of claim 5 in which the skimmer is detachably affixed to the slag receptacle.
Claim 9
Dependent Claim
22 words
Apparatus of claim 5 in which the face of the skimmer adjacent the inside surface of the slag receptacle is flush therewith.
Claim 10
Dependent Claim
37 words
Apparatus of claim 5 in which the face of the skimmer adjacent the inside surface of the slag receptacle is higher than that inside surface so as to form a dam for slag within the slag receptacle.
Claim 11
Dependent Claim
47 words
Apparatus of claim 1 in which the means for forming a dynamic pool comprise a diversion trough into an end of which metal is poured and openings of restricted area extending through the bottom of the diversion trough so as to retard the flow of metal therethrough.
Claim 12
Dependent Claim
16 words
Apparatus of claim 10 in which the bottom of the diversion trough is arcuate in cross-section.
Claim 13
Dependent Claim
22 words
Apparatus of claim 10 including a collecting trough positioned below the diversion trough to receive metal which flows through the openings therein.
Claim 14
Dependent Claim
28 words
Apparatus of claim 12 including a frame in which the diversion trough and the collecting trough are fixed and means movably positioning the slag receptacle in the frame.
Claim 15
Dependent Claim
40 words
Apparatus of claim 13 in which the means movably positioning the slag receptacle in the frame comprise a ledge which supports the closed end of the slag receptacle so as to permit the slag receptacle to tilt on the ledge.
Claim 16
Dependent Claim
21 words
Apparatus of claim 13 including means affixed to the frame for releasably retaining the closed end of the slag receptacle therein.
Claim 17
Dependent Claim
29 words
Apparatus of claim 13 including means for releasably clamping the frame to a ladle so that when the ladle is tilted iron poured therefrom flows into the diversion trough.
Claim 18
Dependent Claim
29 words
Apparatus of claim 16 in which the means for releasably clamping the frame to a ladle include a chain surrounding the ladle connected at its ends to the frame.
Claim 19
Dependent Claim
25 words
Apparatus of claim 16 in which the means for releasably clamping the frame to a ladle include means for drawing the frame against the ladle.
Claim 20
Dependent Claim
19 words
Apparatus of claim 18 in which the means for drawing the frame against the ladle comprise fluid cylinder means.
Claim 21
Dependent Claim
50 words
Apparatus of claim 18 including saddle means attached to the means for drawing the frame against the ladle and disposed to bear on the ladle so that the operation of the means for drawing the frame against the ladle increases the bearing pressure of the ladle means on the ladle.
References Cited (Backward Citations)
US682512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |