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US 5,822,358 AGranted
Method and apparatus for producing self-baking carbon electrode
AssigneeElkem ASA
InventorJohan Arnold Johansen
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AssigneeElkem ASA
InventorJohan Arnold Johansen
Estimating the term…
This invention relates to a method for continuous production of a self-baking carbon electrode in direct connection with the smelting furnace wherein the electrode is consumed. Blocks of a first unbaked carbonaceous electrode paste are supplied to a curing chamber arranged at the upper end of the electrode, which curing chamber is open at its top and at its bottom and has an inner cross section corresponding to the cross section of the electrode which is to be produced, blocks of the first unbaked carbonaceous paste having a smaller diameter than the inner diameter of the curing chamber, supplying a second particulate unbaked carbonaceous electrode paste to the annulus between the curing chamber and the blocks of the first unbaked carbonaceous electrode paste, second electrode paste comprising a binder which cures at a lower temperature than the first carbonaceous paste by heating means arranged on the curing chamber. The second carbonaceous electrode paste thereby forms a cured shell about the central blocks of the first carbonaceous electrode paste. The central unbaked blocks of the first carbonaceous electrode paste are then baked into a solid carbon electrode together with the cured shell by the heat generated in the area of electric current supply to the electrode. The invention further relates to an apparatus for production of such electrodes.
A method for continuous production of a self-baking electrode (1) in direct connection with a smelting furnace wherein the electrode is consumed, comprising the steps of:
An apparatus for continuous production of a self-baking electrode (1) in direct connection with a smelting furnace wherein the electrode is being consumed, the apparatus comprising electrode frame (8), upper holding and slipping means (9) and lower holding and slipping means (10) for the electrode and means (5) for supplying electric operating current to the electrode, wherein the apparatus further comprises a curing chamber (17) arranged at the upper end of the electrode (1), which curing chamber (17) has an open top and an open bottom and has an inner cross-section corresponding to the cross-section of the electrode (1) to the produced, which curing chamber (17) is affixed directly to the upper holding and slipping means (9) and is equipped with heating means (18) for heating the curing chamber (17) to a temperature sufficiently high to provide a cured shell (21) of electrode paste on the inside of the curing chamber (17).
Dependencies are inferred from the claim text.