US4007036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of smelting aluminum
Assignee: Gottschol Metallurgie Dr Ing KG
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Filing: 1974-11-11
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Granted: 1977-02-08
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Expires: 1994-11-11
Abstract
Abstract Aluminum scrap, dross, and the like is preheated to a temperature of approximately 600° C in a prewarming drum and is then turbulenced in an input funnel leading to a satellite furnace. That turbulencing is effected by feeding the preheated aluminum pieces into a stream of molten aluminum coming from a primary smelting oven and directed tangentially into the input funnel so as thoroughly to turbulence the particles and molten aluminum together. Dross developing in the satellite furnace is compacted and then removed and grouped up for reintroduction to the preheating step so as to extract all of the aluminum therefrom.
Inventors
- 👤 Hans-Joachim Gottschol
- 👤 Karl-Josef Gottschol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0084; C22B21/0092; C22B7/00; C22B7/001; C22B7/003; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A method of smelting pieces of a nonferrous metal, said method comprising the steps of: a. drawing preheated pieces of said nonferrous metal by suction into a stream of said nonferrous metal, b. turbulencing the resulting mixture; c. introducing the turbulenced mixture into a satellite furnace, and d. heating said mixture in said satellite furnace to form a molten body of said nonferrous metal and a layer of dross on said body.
Claim 2
Independent Claim
72 words
A method of smelting pieces of a nonferrous metal, said method comprising the steps of: a. drawing preheated pieces of said nonferrous metal by suction into a stream of said nonferrous metal, b. turbulencing the resulting mixture; c. introducing the turbulenced mixture into a satellite furnace, and d. heating said mixture in said satellite furnace to form a molten body of said nonferrous metal and a layer of dross on said body.
Claim 3
Dependent Claim
44 words
The method defined in claim 1, further comprising the steps of: e. compacting said dross and separating same from said body, f. comminuting the compacted and separated dross, and g. employing the comminuted dross as at least some of said pieces of step (a).
Claim 4
Dependent Claim
16 words
The method defined in claim 2 wherein said dross is compacted in step (e) by vibration.
Claim 5
Dependent Claim
78 words
The method defined in claim 2, further comprising the steps of: h. siphoning said molten body at least partially from said satellite furnace into a main smelting furnace, i. maintaining said metal molten in said main furnace, k. drawing hot gas from said main furnace and using said hot gas to heat said pieces in step (a), and 1. drawing molten metal from said main furnace and using said molten metal as said molten mass in step (b).
Claim 6
Dependent Claim
39 words
The method defined in claim 2 wherein said pieces and said mass are turbulenced by introduction of said pieces into a stream of said molten mass and thereafter projecting said stream carrying said pieces tangentially into a mixing chamber.
Claim 7
Dependent Claim
145 words
A process for the melting of aluminum which comprises: preheating aluminum pieces; drawing the preheated aluminum pieces by suction into a stream of aluminum fed to a satellite furnace, thereby combining the preheated aluminum pieces and the aluminum stream; mixing the aluminum of said stream and said pieces intimately by introducing the stream carrying said aluminum pieces tangentially at high velocity into a conical vortex chamber ahead of said satellite furnace and passing the resulting mixture from said chamber into said satellite furnace; feeding aluminum melt from said satellite furnace into a main smelting furnace; removing aluminum dross from said satellite furnace, compacting said dross and comminuting the compacted dross to form at least part of the aluminum pieces combined with said stream of aluminum from the comminuted compacted dross; and feeding molten aluminum from said main furnace to said satellite furnace as said stream.
Claim 8
Dependent Claim
145 words
A process for the melting of aluminum which comprises: preheating aluminum pieces; drawing the preheated aluminum pieces by suction into a stream of aluminum fed to a satellite furnace, thereby combining the preheated aluminum pieces and the aluminum stream; mixing the aluminum of said stream and said pieces intimately by introducing the stream carrying said aluminum pieces tangentially at high velocity into a conical vortex chamber ahead of said satellite furnace and passing the resulting mixture from said chamber into said satellite furnace; feeding aluminum melt from said satellite furnace into a main smelting furnace; removing aluminum dross from said satellite furnace, compacting said dross and comminuting the compacted dross to form at least part of the aluminum pieces combined with said stream of aluminum from the comminuted compacted dross; and feeding molten aluminum from said main furnace to said satellite furnace as said stream.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |