US4785745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for waste treatment
Assignee: Outokumpu Oyj
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Filing: 1986-10-03
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Granted: 1988-11-22
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Expires: 2006-10-03
Abstract
Abstract A method for treating hazardous waste contained in barrels (1), in which method the barrels (1) are cut up and/or crushed in a shearing device (9) so that the created waste mass can be pumped into a kiln furnace (4) by means of a paste pump.
Inventors
- 👤 Jorma Hanni
- 👤 Mauri T. Rantanen
- 👤 Matti Vattulainen
- 👤 Syrjamaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/02; F23G5/033; F23G5/44; F23G5/442; F23G5/448
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
126 words
A method for treating waste contained in vessels such as barrels and the like, particularly hazardous waste, the said method including transporting the vessels (1) containing the waste by means of a charging conveyor (2), and burning the waste in a furnace, characterized in that the vessels (1) are shifted from the charging conveyor (2) into a shearing device (9), where the vessels are cut up and/or pressed to crush so that the waste can be treated with a paste pump (11), metal is separated from the waste before the waste is pumped into the kiln furnace (4) by means of the paste pump (11), and the separated metal is transported, by means of a band conveyor (13), into the same furnace as the waste proper.
Claim 2
Independent Claim
126 words
A method for treating waste contained in vessels such as barrels and the like, particularly hazardous waste, the said method including transporting the vessels (1) containing the waste by means of a charging conveyor (2), and burning the waste in a furnace, characterized in that the vessels (1) are shifted from the charging conveyor (2) into a shearing device (9), where the vessels are cut up and/or pressed to crush so that the waste can be treated with a paste pump (11), metal is separated from the waste before the waste is pumped into the kiln furnace (4) by means of the paste pump (11), and the separated metal is transported, by means of a band conveyor (13), into the same furnace as the waste proper.
Claim 3
Dependent Claim
20 words
The method of claim 1, characterized in that before pumping, the waste mass is conducted into a compensation basin (10).
Claim 4
Independent Claim
104 words
A method for treating waste contained in vessels such as barrels and the like, particularly the hazardous waste, the said method including transporting the vessels (1) containing the waste by means of a charging conveyor (2), and burning the waste in a furnace, characterized in that the vessels (1) are shifted from the charging conveyor (2) into a shearing device (9), where the vessels are cut up and/or pressed to crush so that the waste can be treated with a so-called paste pump (11), and, in order to eliminate the danger of fire, an inert gas atmosphere is maintained within the shearing device (9).
Claim 5
Independent Claim
104 words
A method for treating waste contained in vessels such as barrels and the like, particularly the hazardous waste, the said method including transporting the vessels (1) containing the waste by means of a charging conveyor (2), and burning the waste in a furnace, characterized in that the vessels (1) are shifted from the charging conveyor (2) into a shearing device (9), where the vessels are cut up and/or pressed to crush so that the waste can be treated with a so-called paste pump (11), and, in order to eliminate the danger of fire, an inert gas atmosphere is maintained within the shearing device (9).
Claim 6
Dependent Claim
14 words
The method of claim 3, characterized in that the employed inert gas is nitrogen.
Claim 7
Independent Claim
58 words
A method for treating waste material, comprising delivering the waste material to a treatment location in a closed metal vessel, subjecting the vessel to a shearing operation, whereby the vessel is broken or crushed and the contents of the vessel are released, and conveying released waste material and parts of the broken or crushed vessel into a furnace.
Claim 8
Independent Claim
58 words
A method for treating waste material, comprising delivering the waste material to a treatment location in a closed metal vessel, subjecting the vessel to a shearing operation, whereby the vessel is broken or crushed and the contents of the vessel are released, and conveying released waste material and parts of the broken or crushed vessel into a furnace.
Claim 9
Dependent Claim
34 words
A method according to claim 5, wherein the waste material includes metal and the method comprises separating metallic waste material from the non-metallic waste material and conveying the non-metallic waste material into the furnace.
Claim 10
Dependent Claim
22 words
A method according to claim 6, comprising conveying the separated metallic waste material into the furnace separately from the non-metallic waste material.
Claim 11
Dependent Claim
22 words
A method according to claim 5, comprising accumulating waste material in a compensation basin before conveying the waste material into the furnace.
Claim 12
Dependent Claim
17 words
A method according to claim 5, comprising carrying out the shearing operating under an inert gas atmosphere.
Claim 13
Dependent Claim
17 words
A method according to claim 9, comprising carrying out the shearing operation under an atmosphere of nitrogen.
Claim 14
Independent Claim
77 words
A method for treating waste material that includes metal, comprising delivering the waste material to a treatment location in a closed vessel, subjecting the vessel to a shearing operation, whereby the vessel is broken or crushed and the contents of the vessel are released, separating metallic waste material from the non-metallic waste material, conveying the non-metallic waste material into the furnace, and conveying the separated metallic waste material into the furnace separately from the non-metallic waste material.
Claim 15
Independent Claim
77 words
A method for treating waste material that includes metal, comprising delivering the waste material to a treatment location in a closed vessel, subjecting the vessel to a shearing operation, whereby the vessel is broken or crushed and the contents of the vessel are released, separating metallic waste material from the non-metallic waste material, conveying the non-metallic waste material into the furnace, and conveying the separated metallic waste material into the furnace separately from the non-metallic waste material.
Claim 16
Dependent Claim
19 words
A method according to claim 11, comprising conveying the parts of the broken or crushed vessel into the furnace.
Claim 17
Dependent Claim
28 words
A method according to claim 11, wherein the vessel is a metal vessel and the method comprises conveying parts of the broken or crushed vessel into the furnace.
Claim 18
Dependent Claim
22 words
A method according to claim 11, comprising accumulating waste material in a compensation basin before conveying the waste material into the furnace.
Claim 19
Dependent Claim
17 words
A method according to claim 11, comprising carrying out the shearing operating under an inert gas atmosphere.
Claim 20
Dependent Claim
17 words
A method according to claim 15, comprising carrying out the shearing operation under an atmosphere of nitrogen.
Claim 21
Independent Claim
60 words
A method for treating waste material, comprising delivering the waste material to a treatment location in a closed vessel, subjecting the vessel to a shearing operation, whereby the vessel is broken or crushed and the contents of the vessel are released, the shearing operation being carried out under an inert gas atmosphere, and conveying released waste material into a furnace.
Claim 22
Independent Claim
60 words
A method for treating waste material, comprising delivering the waste material to a treatment location in a closed vessel, subjecting the vessel to a shearing operation, whereby the vessel is broken or crushed and the contents of the vessel are released, the shearing operation being carried out under an inert gas atmosphere, and conveying released waste material into a furnace.
Claim 23
Dependent Claim
24 words
A method according to claim 17, comprising conveying the parts of the broken or crushed vessel into the furnace with the released waste material.
Claim 24
Dependent Claim
34 words
A method according to claim 17, wherein the waste material includes metal and the method comprises separating metallic waste material from the non-metallic waste material and conveying the non-metallic waste material into the furnace.
Claim 25
Dependent Claim
22 words
A method according to claim 17, comprising accumulating waste material in a compensation basin before conveying the waste material into the furnace.
Claim 26
Dependent Claim
17 words
A method according to claim 17, comprising carrying out the shearing operation under an atmosphere of nitrogen.
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) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |