Arc furnace electrode length determination
AssigneePyromet Proprietary Products (Pty) Limited
InventorEugenius Daniel Sidorski
Life of this patent
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Abstract
An electrode column and a method of determining the length of the electrode in it in an active furnace. The column is a Söderberg column including a mantel in which the electrode is movable in an axial direction by lower and upper slipping clamps which are movable relatively to each other by slipping cylinders. The method includes the steps of moving, with the slip clamps, the electrode in a downslip relatively to the mantel with the slipping cylinders and gravity and measuring the force required to move the electrode with only the upper slipping clamp against predetermined reaction forces acting against movement of the electrode and computing these parameters to determine the mass and so the length of the electrode relatively to the theoretical mass of the undamaged electrode at the time of movement.
Claims7
An electrode column [10] for use in an arc furnace comprising an electrode mantel [13], an electrode [11] which is concentrically located in and movable in an axial direction relatively to the mantel [13], an electrode slipping arrangement [12] including a lower electrode slip clamp [32] which surrounds the electrode [11] and which is carried by a ring beam, an upper electrode slip clamp [30] around the electrode [11] which is spaced vertically from and movable relatively to the lower clamp [32], slipping cylinders [34] which are connected to and between both slipping clamps [30,32] and electrical load regulating cylinders [26] which are connected to act between the ring beam [24] and fixed structure above the furnace roof,
- characterised in that the electrode column [10 ] includes at least one resiliently yieldable load resisting device [36] which is located between the upper slip clamp [30] and structure on the ring beam [24] and on which the electrode [11], when clamped only by the upper slip clamp [30] may totally be supported and means for measuring the load induced yield of the load resisting device [36].
Dependencies are inferred from the claim text.