SU772712A1 - Steel-teeming ladle - Google Patents

Description

one

The invention relates to black. metallurgy, more specifically to devices intended for the reception and casting of liquid metal.

Devices are known that serve 5 for receiving, transporting and pouring liquid metal through a metal discharge device and consisting of a metal casing, a refractory lining of the walls and bottom. About 1 ..

The disadvantage of such devices lies in the considerable consumption of expensive refractory bricks for laying the working layer of the refractory lining of the bottom of the ladle.

The closest technical solution to the proposed one is a steel-teeming ladle, the working layer of the refractory lining of the bottom of which is made of a continuous refractory mass t2l.

A disadvantage of the known ladle is that the strength of the working lining layer is significantly reduced when using refractory silica self-hardening mass using the tendency of the latter to grow when heated, when steel is released from the furnace bath to the ladle, in which the upper

the bottom lining layer is completely made of a bulk refractory mass, the contact area of the working layer is not sufficiently resistant to washing out the impact of a falling stream of steel.

The purpose of the invention is to increase the strength of the working layer of the refractory lining of the bottom of the bucket due to its resistance to erosion effect.

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This goal is achieved by the fact that the working layer of the lining of the bottom of the bucket additionally contains refractory reinforcement made of refractory bricks and the working layer of the lining of the bucket is made in the form of alternating rows of refractory bricks and refractory mass, with the row of bricks being parallel to the axis of the bucket.

FIG. 1 shows schematically a bucket, a general view; in fig. 2 - the same, top view.

The bucket contains a metal casing 1, to which the facing row of masonry 2 of one or several layers of refractory brick is attached. Facing the side wall with a layer of refractory mass: 3. On the bottom of the bucket facing,

Laying 4 is laid on an insulating layer 5 of refractory fireclay and clay mortar, smoothing the irregularities of the casing and facilitating the laying of bricks. On the facing lining of the bottom lining stack one or two of six refractory bricks.

The top working layer of the bottom lining is prepared as follows.

For the sake of simplicity, solid rows of 7 rows of one or two bricks are laid out at the bottom. The space between the rows is filled with a refractory solution of self-hardening mixture 8. Brick fittings hold back the growth of the asy during heating and prevent the washing of the refractory mass by the falling stream and the steel flows in the ladle.

When steel is discharged from the furnace bath along the chute into the ladle, it is established that if the directions of the reinforcing layers of the lining of the bottom and the axes of the journals of the ladle trunks coincide, i.e. perpendicular to the flow moving along the chute and. the falling steel stream, the resistance of the working lining layer against erosion was higher than with their mutually perpendicular arrangement.

The use of the proposed bucket shows that the resistance of the bottoms of the coves, the working lining layer of which is made of self-refractory refractory mixture and reinforced with rows of refractory bricks, is not inferior to the resistance of the bottom lining made entirely of refractory chamotte bricks. In this way, significant savings are achieved in the consumption of refractory bricks.

Claims (3)

1. A pouring ladle comprising a metal casing, fireproof masonry and a bottom with a working layer from the refractory mass, characterized in that, in order to increase the strength of the working layer due to its resistance to the impact of the steel, the working layer of the lining of the bottom of the ladle additionally contains refractory reinforcement. 2.Kovsh pop. 1, and also with the fact that the refractory reinforcement is made of refractory bricks. 3. Kovsh on PP. 1 and. 2, characterized in that the working layer of the lining of the ladle is made in the form of alternating rows of refractory bricks and refractory masses, the rows of bricks being directed parallel to the axis of the trunnion trunnions. Sources of information taken into account in the examination G. USSR Copyright Certificate № 411956, cl. B 22 D 41/02, 1972. 2. Lining of steel casting ladles. Information leaflet TSNIIITI, 1978, ser. 6, number 17.