US4094494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace charge profile measuring process and apparatus
Assignee: Paul Wurth SA
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Filing: 1977-01-25
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Granted: 1978-06-13
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Expires: 1997-01-25
Abstract
Abstract The surface contour of material deposited on the hearth of a furnace is sensed by measuring the height of the material on the furnace axis and at a plurality of points about the periphery of the furnace. The height on the furnace axis is measured with an instrument mounted on the axis of a furnace having an internally mounted steerable material distribution chute with the instrument being positioned vertically above the chute and the feed channel through which charge material is delivered to the chute.
Inventors
- 👤 Rene N. Mahr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:14
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A process for monitoring the development of the surface of the charge burden on the hearth of a shaft furnace, the furnace employing a rotatable and angularly adjustable distribution chute which extends downwardly on the axis of the furnace, the angle of the chute with respect to the axis of the furnace being adjustable to deposit furnace charge material in a predetermined pattern, said process including the steps of: inclining the distribution chute such that its axis is at a preselected angle with respect to the axis of the furnace; lowering a probe initially axially with respect to the furnace until it contacts the charge surface, the probe being deflected from the furnace axis by the distribution chute; measuring the distance traveled by the probe until contact with the charge surface has been established; correcting the measured distance in accordance with the angular inclination of the distribution chute; and withdrawing the probe from the charge surface.
Claim 2
Dependent Claim
156 words
A process for monitoring the development of the surface of the charge burden on the hearth of a shaft furnace, the furnace employing a rotatable and angularly adjustable distribution chute which extends downwardly on the axis of the furnace, the angle of the chute with respect to the axis of the furnace being adjustable to deposit furnace charge material in a predetermined pattern, said process including the steps of: inclining the distribution chute such that its axis is at a preselected angle with respect to the axis of the furnace; lowering a probe initially axially with respect to the furnace until it contacts the charge surface, the probe being deflected from the furnace axis by the distribution chute; measuring the distance traveled by the probe until contact with the charge surface has been established; correcting the measured distance in accordance with the angular inclination of the distribution chute; and withdrawing the probe from the charge surface.
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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |