Patent US2335633A successfully refreshed from Google Patents.
US4113239A
Expired / Lapsed
US
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Apparatus for cooling slag
Assignee: IHI Corp
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Filing: 1977-12-27
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Granted: 1978-09-12
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Expires: 1997-12-27
Abstract
Abstract Molten slag is impinged against a target, for instance a rotary drum, gets itself granulated as it rebounces on the target surface, and is charged into a fluidized bed consisting of solid particles and gas so that slag granules may be quickly cooled without damaging the shape.
Inventors
- 👤 Tetsuro Nakada
- 👤 Makoto Shimizu
- 👤 Mayumi Yoshinaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:08
CPC Classifications
C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B3/08; C21B2400/00; C21B2400/02; C21B2400/022; C21B2400/026; C21B2400/05; C21B2400/052; C21B2400/054; C21B2400/066; C21B2400/076; C21B2400/08; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
An apparatus for cooling slag comprising a device for converting molten slag into slag granules, a fluidized bed type cooler with a fluidized bed of solid particles through which passes gas, a moving bed type heat-exchanger which is communicated with the bottom of said cooler and which has a moving bed of slag granules through which passes gas, and a classifying pipe interconnecting between said cooler and said heat-exchanger for classifying the slag granules from solid particles of said fluidized bed.
Claim 2
Independent Claim
81 words
An apparatus for cooling slag comprising a device for converting molten slag into slag granules, a fluidized bed type cooler with a fluidized bed of solid particles through which passes gas, a moving bed type heat-exchanger which is communicated with the bottom of said cooler and which has a moving bed of slag granules through which passes gas, and a classifying pipe interconnecting between said cooler and said heat-exchanger for classifying the slag granules from solid particles of said fluidized bed.
Claim 3
Dependent Claim
22 words
An apparatus as set forth in claim 1 wherein said device for converting molten slag into slag granules is a rotary drum.
Claim 4
Dependent Claim
27 words
An apparatus as set forth in claim 1 wherein a heat-exchange tubing through which flows a heat-exchange medium is disposed within said fluidized bed in said cooler.
Claim 5
Dependent Claim
27 words
An apparatus as set forth in claim 2 wherein a heat-exchange tubing through which flows a heat-exchange medium is disposed within said fluidized bed in said cooler.
Claim 6
Dependent Claim
48 words
An apparatus as set forth in claim 1 further comprising a cyclone for separating slag granules and other solid particles carried by the gas discharged from said cooler and returning them to said cooler, and heat-exchange means for recovering the heat from the gas discharged from said cyclone.
Claim 7
Dependent Claim
48 words
An apparatus as set forth in claim 2 further comprising a cyclone for separating slag granules and other solid particles carried by the gas discharged from said cooler and returning them to said cooler, and heat-exchange means for recovering the heat from the gas discharged from said cyclone.
Claim 8
Dependent Claim
48 words
An apparatus as set forth in claim 3 further comprising a cyclone for separating slag granules and other solid particles carried by the gas discharged from said cooler and returning them to said cooler, and heat-exchange means for recovering the heat from the gas discharged from said cyclone.
Claim 9
Dependent Claim
48 words
An apparatus as set forth in claim 4 further comprising a cyclone for separating slag granules and other solid particles carried by the gas discharged from said cooler and returning them to said cooler, and heat-exchange means for recovering the heat from the gas discharged from said cyclone.
References Cited (Backward Citations)
US3374999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |