Heating apparatus for molten metal container

Abstract

A molten metal container has a cover which can tilt by a predetermined angle around a rotation axis. The cover is provided with a regenerative burner unit having a pair of supply and discharge nozzles. The pair of supply and discharge nozzles connects to a pair of ducts. The pair of ducts comprises a first duct disposed on the cover and a second duct having a regenerative chamber. The first duct has a first end connecting to the supply and discharge nozzle and a second end coaxial with the rotation axis. The second duct has a first end coaxially facing the second end of the first duct and a second end connecting to the regenerative chamber. A seal portion is interposed in the facing portion between the second end of the first duct and the first end of the second duct. The regenerative chamber is disposed on a position unrelated to opening and closing the cover.

Description

technical field [0001] The present invention relates to a heating device for a melt container that heats the inner atmosphere of a melt container such as a ladle or a tundish. Background technique [0002] As an example of a heating device for a molten metal container, a heating device for a hot metal pot is disclosed in Patent Document 1. At the front end of a tilting arm that tilts at a predetermined angle around the support shaft of the frame, a There is a cover that closes the upper opening of the hot metal pot, and a regenerative burner is installed in the center of the cover. In the regenerative burner of Patent Document 1, a metal heat storage body is built into the burner body to prevent damage to the heat storage body due to impact generated when the lid is opened and closed. [0003] Patent Document 2 discloses a tundish preheating device that can make a spherical heat storage member that has rolled due to its own weight rest at a predetermined level even if the t...

AI Technical Summary

Problems solved by technology

However, the following new problem arises: when the cover returns from the open state to the closed state, the upper surface of the heat storage body in the regenerator chamber is not necessarily flat, and the air flow for combustion or combustion exhaust passing through the regenerator chamber is deflected to one side.

[0012] On the other hand, in Patent Document 3, rotary joints are provided at multiple places of the fixed pipe to absorb the displacement corresponding to the opening and closing of the cover. It is a fire-resistant and heat-insulating structure. Therefore, even if rotary joints are installed in multiple places in the pipeline, it is not easy to absorb the displacement caused by the opening and closing of the cover by tilting.

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