Heating device and heating method inside refractory container

Abstract

The cover is disposed so as to cover at least the opening of the upper surface of the refractory container made of refractory on the inner surface side through a gap, and when the inside of the refractory container is heated by a burner installed to penetrate the cover, The burner is provided with a continuous combustion control mechanism that adjusts the amount of combustion while continuously burning fuel with the burner, and an on / off combustion control mechanism that adjusts the switching time of burning and stopping of fuel by the burner and the amount of combustion. A switching device for switching combustion of the burner between said continuous combustion control mechanism and said on / off combustion control mechanism.

Description

technical field [0001] The present invention relates to a heating device and a heating method inside a refractory container that is used in a molten metal container, a tundish, etc., and at least the inner surface side is made of a refractory material. In particular, it is characterized in that when heating the inside of the refractory container, the temperature rise inside the refractory container can be appropriately controlled so that the entire interior of the refractory container can be appropriately heated. Background technique [0002] Conventionally, in a refractory container in which at least the inner surface side is made of a refractory material used in a molten metal container, a tundish, etc., the refractory material on the inner surface side is periodically replaced. [0003] And, when the refractory on the inner surface side of the refractory container is replaced as described above, a cover material is provided above the refractory container, and a burner for...

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Problems solved by technology

[0008] However, as shown in the above-mentioned Patent Document 1, there are technical problems such as the following technical problems: while continuously measuring the amount of moisture contained in the refractory material on the inner surface side of the refractory material container, it is difficult to control the amount of combustion gas of the heating burner to perform drying. It is very troublesome, the equipment cost is very high, and it is difficult to quickly heat the refractory on the inner surface side of the refractory container, and in addition, it is difficult to properly control the temperature change of the refractory on the inner surface side of the refractory container

[0010] However, even in the proposal shown in Patent Document 2, there are technical problems such as the following technical problems: in order to dry the refractory construction body by heating it to a predetermined target temperature, the control is very troublesome, and the equipment cost is very high. In addition, if a gap is provided between the refractory construction body and the cover as shown in the above-mentioned Patent Document 1, it is difficult to increase the temperature, and it is difficult to quickly heat the refractory body inside the refractory construction body, and it is also difficult to properly control the temperature. Change of temperature of refractory inside refractory construction body

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