JPS5926230B2 - Method for controlling the amount of deposits on the furnace lid in a melting furnace for copper, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the amount of deposits on a furnace lid in a furnace for melting copper or the like (for example, a smelting furnace).

Currently, furnaces for melting copper and other metals are sealed and it is not possible to know the conditions inside the furnace, so refining is performed continuously in a blind operation.

The lid of a furnace for melting copper or the like is made of refractory material, but if the lifespan of the furnace is affected, a cooling block or cooling box is used.

In this case, if the furnace lid is strongly cooled, a large amount of deposits (splash) will adhere, which is undesirable from a structural standpoint, and is also wasteful in terms of chemical removal and heat, which is a problem.

In particular, if water is used to cool the furnace lid, it will not be able to withstand the load due to a large amount of deposits, and there is a risk that the cooling block or cooling box that forms the furnace lid will fall into the hot water, causing a large explosion. .

On the other hand, if cooling is insufficient, splash will not adhere and the service life will be significantly reduced.

The present invention relates to a method for controlling the amount of deposits on the furnace lid in a melting furnace for copper, etc., which was made in view of the above-mentioned actual situation. Changes in the amount of deposits are detected using a thermoelectric lamp embedded in the box and/or a load cell that detects the load on the furnace lid, and based on this detected value, mist is applied to the cooling block or cooling box. This method is characterized by adjusting the amount of coolant supplied (and thereby controlling the amount of deposits attached).

Embodiments of the present invention will be described with reference to the drawings.

A roof ring 2 is attached to the upper end surface of the furnace body 1, and a support beam 3 with a plurality of hanging rond pipes 4 provided on the lower surface is placed and fixed on the roof ring 2, and a cooling block (or cooling box) is installed as below. 5 are combined and suspended from the hanging rod pipe 4 via the hanging rod 6 to form a furnace lid, and between the support beam 3 on one side (or both sides may be used) of the furnace lid and the roof ring 2. A load cell 1 is provided so as to be able to detect changes in load due to adhesion of splash 8 to the furnace lid.

As shown in FIG. 2, the cooling block 5 has a thermocouple 9 buried therein so that thermal changes can be detected, and cooling pipes (not shown) buried therein. A mist coolant is introduced from the inlet pipe 10 and discharged from the discharge pipe 1.
1 to be discharged and cooled.

That is, the cooling block 5 is spray cooled (evaporatively cooled).

In the figure, 12 is a mist coolant flow rate control valve.

The melting furnace is operated with the splash 8 floating on the upper surface as shown in FIG.

In this case, if there is a certain amount of splash 8, it is possible to protect the cooling block 5 and extend the life of the furnace cover.

Now, when the cooling block 5 that forms the furnace cover is cooled too much, a large amount of splash 8 adheres to the bottom surface, causing a change in the load, which is detected by the load cell T, and a thermal change due to the adhesion of the splash 8. It is detected by the thermocouple 9, and based on these detection signals, the mist coolant flow control valve 12 is operated to control the cooling of the cooling block 5 and the adhesion thickness of the splash 8.

Therefore, it is possible to protect the cooling block 5 and extend the life of the furnace lid.

Furthermore, even if the cooling block 5 were to fall due to the adhering load of a large amount of splash 8, there is no risk of a large explosion unlike in the case of conventional water use, and the system is safe.

Although the present invention has been described with reference to the case where both a load cell and a thermocouple are used, either one may be used, and it is optional to embed a thermocouple in any cooling block, not all of them. Of course, various changes can be made without departing from the above.

As described above, according to the method for controlling the amount of deposits on the furnace lid in a melting furnace for copper, etc. of the present invention, the thickness of the deposits can be reliably adjusted, thereby protecting the cooling block and ultimately extending the life of the furnace lid. It exhibits excellent effects such as being able to extend the length of the furnace, stabilizing the operation of the furnace, and having a simple mechanism and easy operation.

[Brief explanation of drawings]

Fig. 1 is an explanatory cross-sectional view of a melting furnace for copper, etc., in which the method for controlling the amount of deposits on the furnace lid in a melting furnace for copper, etc. of the present invention is implemented, and Fig. 2 is a detail of the cooling block in Fig. 1. FIG. 1...Furnace body, 2...Roof ring, 3
... Support beam, 5 ... Cooling block, T ... Load cell, 8 ... Splash, 9 ... Thermocouple, 10 ... ...Inlet pipe, 11...Discharge pipe, 12...Flow rate adjustment valve.

Claims (1)

[Claims] 1 A melting furnace for copper, etc. (in which a thermocouple embedded in the cooling block or cooling box that forms the furnace lid and/or a load cell that detects the load on the furnace lid is used to remove deposits) A method of depositing deposits on a furnace lid, characterized in that the amount of deposits deposited on a furnace lid is controlled by detecting a change in the amount of deposits and adjusting the amount of mist coolant supplied to a cooling block or cooling box based on the detected value. Adhesion amount control method.