CS266758B1 - Mechanical protection for metallurgical ladle - Google Patents

Abstract

) The solution deals with the problem of increase safety of transparent metallurgical basin, by preventing the penetration of hot liquid metal from the pelvis and easy panning without special lifting mechanisms. Reaches with this by storing your own container metallurgical basin into a protective mantle that It is made of thick steel sheet and covers fragile and low-strength parts of the container itself. This protective cover is removably attached to its own container during transport, while during heating is scanned. They may be on the protective jacket hinges are fastened, which makes it much easier pan tipping.

Description

The invention relates to the technical protection of a transparent metallurgical ladle for electromagnetic waves.

Previously known metallurgical ladles transparent for electromagnetic waves, which allow induction heating, consist only of its own vessel formed by a ceramic lining provided with metal ribs, between which there are ceramic inserts. These ladles are not equipped with a mechanical protection of the vessel and are therefore not very robust and essentially brittle for metallurgical operations, so that leakage of liquid metal can occur through the transparent casing, which is particularly dangerous when moving the ladle suspended on a crane. Basins are also known, the shell of which is made of a refractory ceramic material on the inside and of wound glass fiber on the outside, and a ceramic fiber-reinforced ceramic between these walls. However, these ladles are materially demanding in terms of production and for their pouring they must be overturned by means of an additional lifting device or they must be poured out with a removable bottom.

These disadvantages are eliminated by the mechanical protection of the metallurgical ladle transparent to electromagnetic waves and consisting of its own vessel, formed by a ceramic lining provided with metal ribs, between which there are ceramic inserts according to the invention, the essence of which is attached to the container itself and whose shape is identical to the shape of the part of the shell of the container itself, around which it forms a continuous cover.

The advantages achieved by the inventor are increased safety of operation, prevention of hot metal penetration and simplicity and cheapness of design. In addition, the possibility of attaching the suspension brackets of the casing greatly facilitates the tilting of the ladle and its pouring out without a special lifting mechanism.

An exemplary embodiment according to the invention is shown in the accompanying drawing, in which FIG. 1 is a longitudinal section of a transparent metallurgical ladle with a protective jacket and in FIG.

The transparent metallurgical ladle consists of its own vessel 2, Fig. 1, formed by a ceramic lining provided with metal ribs 6, between which there are ceramic inserts 3, Fig. 2. The vessel itself 2, which has hanging handles attached in its upper part, is placed in a protective jacket X, Fig. 1, which is removably connected to it and is made of thick sheet steel. It has a conical or cylindrical shape, depending on the shape of that part of the casing itself of the container 2, around which it forms a continuous cover all mechanically and for reasons of transparency few fixed places, such as ceramic inserts X between the metal ribs 4. If the protective jacket X is cylindrical, it must have a guide cone so that the cane is better guided into it. The protective cover 7 can also be divided, eg for easy sliding on the container 2 itself from the sides, in the radial direction. This protective shell χ forms the mechanical protection of the transparent metallurgical basin. The pan may have hanging brackets fixed instead of on top of the container 2 itself directly to the protective shell for easy tilting above the center of gravity of the pan.

During the actual induction heating, the protective honeycomb 7 is removed from the ladle, so that the ladle is irradiated. After removing the pan with heated liquid metal from the heating coil, the pan is first inserted into the prepared protective strip X, which is automatically secured against slipping and the pan can be treated in the same way as a very robust opaque pan. Upon evolutionary penetration of the liquid metal through the broken ceramic lining of the vessel 2 itself and through the ceramic inserts χ, the liquid metal reaches the protective jacket and cools considerably. The protective signal X first turns red, which is a signal for the operator to quickly pour metal from the ladle into the prepared auxiliary safety ladles, into the Pit, etc. Without the protective cover χ this signaling is missing. Possible flow of metal in the heating coil, when it is a protective sheath X

266756 removed, metal leakage is not dangerous for the operator, because the operator is protected by the heating coil and its whole system in the same way as the protective jacket

This protective jacket is suitable for existing ladles, so there is no need to design and manufacture new ladles to increase safety and to prevent the penetration of hot metal.

Claims (2)

FRONT OF THE INVENTION 1. Mechanical protection of a metallurgical ladle transparent to electromagnetic waves and consisting of its own vessel, formed by a ceramic lining provided with metal ribs, between which there are ceramic inserts, characterized in that it is formed by a protective sheath / 1 / which is removably connected to the vessel itself / 2 / a Its shape is identical with the shape of the part of the shell of the container itself / 2 /, around which it forms a continuous cover. 2. Mechanical protection of a metallurgical ladle according to item 1, characterized in that the protective sheath (1) is provided with suspension brackets.