US3603568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat treatment of fine material
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1969-10-08
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Granted: 1971-09-07
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Expires: 1989-10-08
Abstract
Abstract The apparatus comprises preheating, firing and cooling apparatus. Hot gases and fine material are passed concurrently through a firing chamber, and a separator is directly connected to the firing chamber.
Inventors
- 👤 Horst Ritzmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:43
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B11/00; C04B11/02; C04B11/028; C04B2/00; C04B2/10; C04B7/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
Apparatus for heat treatment of fine material, comprising an air preheater and a fine material preheater, wherein the improvement comprises a tubular firing chamber having an axial inlet at one end which connects the firing chamber to a premixing chamber, means for introducing the preheated fine material and preheated air into the premixing chamber, to cause them to mix and then flow axially into the tubular firing chamber through the axial inlet, and a separating chamber, for precipitating the fired fine material, which is directly connected to the other end of the tubular firing chamber.
Claim 2
Dependent Claim
95 words
Apparatus for heat treatment of fine material, comprising an air preheater and a fine material preheater, wherein the improvement comprises a tubular firing chamber having an axial inlet at one end which connects the firing chamber to a premixing chamber, means for introducing the preheated fine material and preheated air into the premixing chamber, to cause them to mix and then flow axially into the tubular firing chamber through the axial inlet, and a separating chamber, for precipitating the fired fine material, which is directly connected to the other end of the tubular firing chamber.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1, wherein at least one cooling air supply passage discharges into the end of the firing chamber adjacent to the separating chamber.
Claim 4
Dependent Claim
12 words
Apparatus according to claim 1, wherein the firing chamber is substantially horizontal.
References Cited (Backward Citations)
US3410542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |