Combined holder for ore furnace

Abstract

A combined holder for ore-smelting furnace relates to an electrode holder for ore-smelting furnace, comprises a holding cylinder, an electrode shell which is welded by a plurality of arc plates and rib plates, two sides of the electrode shell external rib plate are provided with a conductive element group which is connected by adjusting bolts and butterfly-springs, the top of the conductive element group is fixed on a holding cylinder flange by a stainless steel bent plate, the bottom thereof is arranged on a bottom ring which is fixed on the holding cylinder flange by a suspender, a stainless steel protecting cover is arranged outside of the conductive element group, the conductivity of the device and stability of current delivery are improved greatly, thereby the service life of the conductive element group is improved greatly, and unit current drain of products can be reduced.

Description

technical field [0001] The invention relates to an electrode holder for a submerged arc furnace, in particular to a combined electrode holder. Background technique [0002] At present, more than 90% of the submerged arc furnace controllers in China use a cone ring or pressure ring structure, and the copper tiles are often damaged due to arcing. The life of the copper tiles is generally 6-8 months. Refer to Figure 1. The structure of this controller The biggest disadvantages are: (1) Since the copper tile works in a high temperature environment, it is easy to deform, and the gripper of this structure can only exert local pressure on the copper tile. Most of the contact surface of the copper tile is due to its own strength limitation. Contact, it is greatly affected by the high-temperature deformation of electrodes and copper tiles, resulting in poor contact between copper tiles and electrodes and arcing, which has a high failure rate, high maintenance costs, and high average ...

AI Technical Summary

Problems solved by technology

[0002] At present, more than 90% of the submerged arc furnace controllers in our country adopt a cone ring or pressure ring structure, and the copper tiles are often damaged due to arcing. The life of the copper tiles is generally 6-8 months. Refer to Figure 1. The structure of this controller The biggest disadvantages are: (1) Since the copper tile works in a high temperature environment, it is easy to deform, and the gripper of this structure can only exert local pressure on the copper tile. Most of the contact surface of the copper tile is due to its own strength limitation. Contact, it is greatly affected by the high temperature deformation of electrodes and copper tiles, resulting in poor contact between copper tiles and electrodes and arcing, high failure rate, high maintenance costs, and high average energy consumption per unit; (2) Affected by electrode deformation Large, due to the deformation of the electrode at high temperature, the roundness of the electrode decreases, resulting in poor contact between the copper tile and the electrode, resulting in arc damage to the copper tile; (3) The surface oxidation of the electrode shell affects the conduction of the copper tile. Since the electrode shell is also at high temperature for a long time, the surface It is very easy to oxidize, which also leads to poor contact with the copper tile

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