Water-cooling long-life converter tapping hole

Abstract

The invention relates to a water-cooling long-life converter tapping hole, which comprises an outer sleeve, a middle sleeve, a core tube and a special-shaped seat brick. One end of the outer sleeve isfixedly connected with a converter shell, the middle sleeve is placed inside the outer sleeve and fixedly connected with the outer sleeve, the core tube is placed in a conical hole inside the middlesleeve, and the outer surface of a conical shaft of the core tube makes contact with the inner surface of the conical hole of the middle sleeve to constitute conical surface coordination; and the special-shaped seat brick is inlaid in a liner of a converter, and an inner hole of the special-shaped seat brick and a core tube hole constitute a tapping channel together. Cooling water directly cools the middle sleeve and indirectly cools the core tube and the special-shaped seat block. When a gap appears between the core tube and the middle sleeve, heat of molten steel cannot be directly transferred to the middle sleeve through the core tube, consequently, the water temperature of a water outlet is obviously decreased, and at the moment, the core tube needs to be replaced in time to avoid damaging the middle sleeve. The life of the tapping hole can be greatly prolonged, under the premise of ensuring the ideal cooling effect, tapping hole replacement can be carried out in the same period asconverter overhaul, and the replacement time of the core tube of the tapping hole can be shortened to 10-20 min.

Description

technical field [0001] The invention relates to converter tapping hole equipment, in particular to a water-cooled long-life converter tapping hole, which belongs to the technical field of metallurgical equipment. Background technique [0002] The taphole is the channel through which molten steel flows from the converter to the ladle, and is one of the key components of the converter. The tap hole enables the separation of steel slag during the tapping process, reduces the pollution of molten steel caused by the flow of steel slag into the ladle, and reduces the burning loss of alloy elements; The deoxygenated product floats up. Therefore, the service life and quality of the tap hole not only affect the production efficiency of molten steel smelting, but also affect the quality of molten steel. [0003] At present, the taphole of the converter is composed of a seat brick and a sleeve brick. The seat brick is a brick set outside the sleeve brick. Its function is to protect t...

AI Technical Summary

Problems solved by technology

Replacing the tap hole requires a special drilling rig to remove the damaged sleeve bricks, and then install the new sleeve bricks, which generally takes 50-60 minutes and loses 2 furnaces of molten steel smelting time

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