SU707691A1 - Unit for guniting metallurgical vessels - Google Patents

Description

(54) INSTALLATION FOR THE TREATMENT OF METALLURGICAL CAPACITIES

I ,. : The invention relates to ferrous metallurgy and can be used in the gunning of the lining of hollow tanks of predominantly round section, for example the lining of steel casting ladles.

A device for applying a protective coating to the lining of profitable extensions is known, consisting of a bridge, movement mechanisms, a mortar hopper, a feeding device, a working body in the form of an intermediate tank, pipelines and a cylindrical disc with blades 1.

A disadvantage of the known device is the low quality of shotcrete, low labor productivity, structural ability of the working body and the system for feeding the dissolved mass to the disk. Since the resistance in the solution lines is different, the amount of solution passing through each solution line is different, and therefore, different points of the working disk arrive at different points of the working disk.

Therefore, the slurry is applied to the fujepoBKy in an uneven layer. On lining

areas are formed with thin and thick layers of protective gunning mass.

It should be noted that it does not allow a smooth, but thicker layer of mortar gunning mass to be applied to the more worn side of the lining, and such side is, for example, the side of the steel-teeming ladle - the side of the ladle, through which the slag remaining after pouring the steel is drained .

The disadvantages of the known device include the complexity and insufficiently clear operation of the system, consisting of a bunker, a power supply device and a connection to their pipeline.

Claims (2)

In addition, the solution supply system from the hopper to the disc, due to the fact that the capacity of the emergency pump is constant, does not allow the amount of the solution fed to the disc to be controlled during the {) operation, the thickness of the layer applied to one stroke of the working organ remains constant, whereas, depending on the state of the lining, the thickness of the nano-central layer of the protective mass needs to be changed. . The closest technical solution to the present invention is to install a shotcrete metal tanks, including a platform with a hopper and a compressed air pipeline and mounted with the ability to move in the vertical direction the working body, holding the solution chamber, in the case of which the blade disk is fixed and inlet 2. The above drawbacks are inherent in the known device: 1; The purpose of the invention is to improve the quality of gunning. ; This is achieved by the fact that the working body is equipped with a movable ring, forming an adjustable gap with the camera body, including a kopnyc camera, and looking for a connection through the mouth of the valve. FIG. Figure 1 shows a gunning installation; general view; in fig. 2 - working body; in fig. 3 - intermediate tank (section A-A of FIG. 2). The installation consists of the carrier platform 1, on which the bunker-feeder 2, Chadabzhniy with vectors 3, 4, 5, receiving valve 6, pipeline 7 of compressed air and pressure regulating valve 8 are installed. On Sho (a tandem is also equipped with a mechanism 9 with a rod 10, on which the working body 11 is fixed. The installation is fixed by a clamp 12. The working blade 11 consists of a disk 13 with a paddle 14, a chamber 15 connected to the hose 16. The disk 13 is rotated with water 17. The chamber 15 consists of a split case; 18, a hinge 19, a wedge mount 20 and an adjusting ring 21 having a protrusion .22 The chamber 15 is designed so that a circular slit is formed between its case 18 and the ring 21. mounted on the thread on the housing 23 Organ I. The size of the gap between the ring 21 and the chamber body 18 is set by rotating the ring 21 with a special key inserted into the holes of the side surface of the ring / Bass chamber 18 through an annular groove mounted on the disk 24, which is rigidly connected to the body 23 of the working body The gunning of the lining of the steel-teeming ladles is carried out as follows: The ladle 25 is mounted on a stand or repair 26. On the trimming of the ladle 25 by means of a crane, the gunning unit is mounted. The mechanism 9 lifting | lowering the working body 11 is lowered to the bottom of the koniua, leaving a small gap between the bottom and the disk 13 of the working body. Through the funnel 6 and the valve 4 in the hopper-feeder 2 load sprayed mass. Include the drive 17 of the disk and the mechanism 9 of the lifting of the working body 11. The valve 4 is closed, and the valves 3 and 5 open. Compressed air through the pipeline 7 and the valve 5 enters the hopper-feeder 2 and, creating pressure on the mortar mass1, delivers it through the hoses and slot of the chamber 15 to the disk 13 with blades 14, from where it is centrifugally generated by the rotation of the disk, is applied to the lining bucket. The size of the gap. Each protrusion 22 of the ring 21 and the housing 18 is set in advance and must be such that sufficient pressure is created in the chamber 15. Due to the fact that the lining of the slag side of the ladle — the side through which the slag left after pouring is drained from the ladle — wears out more intensively, a thicker layer of mortar is applied on this side. This is done as follows. After loosening the wedge fastener 20, the chamber 15 is turned to the side of the most worn-out bucket lining with the under-pipe nozzle and with the same wedge they are screwed in this position. By turning the ring 21, the gap between its protrusion 22 and the body of chamber 15 is increased, the CaMbiM supporting mortar mass in chamber 15 is reduced, and from the side of the inlet pipe to the working disk 13 the mortar mass enters more than the pipe, therefore, on the corresponding side of the lining of the bilge 25, the mass is applied in a thicker layer. In addition, the lower part of the lining of the bucket 25 is in the high temperature zone for a longer time and, therefore, wears out more intensively, therefore, this part of the lining of the bucket 25 is about 1/2 of the height of the bucket — a thicker layer of mortar must be applied. This is created by the valve. The pressures that supply the hopper 2. UV or even reducing the air pressure in the hopper-feeder 2, increase or decrease the amount of mortar entering the working disk 13, and thereby increase or decrease the thickness of the mortar mass applied to the lining. The control of all mechanisms of the mouth of the pump is carried out from the control panel, standing on the installation site, or from a manual push button station. At the end of the operation of the shotcrete units, they are removed from the bucket with a crane | and put on a special stand, and your millet is sewn. 57 The gunning installation is reliable in operation, easy to maintain, increases productivity, allows control of the mortar mass applied to the lining, which improves the quality of the shotcrete, thereby increasing the durability of the casting ladles. The installation allows the gunning layer to be applied in accordance with the condition of the lining with that caMbiM guncrete mass is spent more economically. Claims An installation for the gunning of metallurgical vessels, e.g. steel teeming ladles, comprising a bunker area i and / and a compressed air pipeline and a working unit mounted for movement in the vertical direction, containing a solution chamber, in the casing of which a blade disk and a feed inlet is fixed, which, in order to improve the quality of the shotcrete, the working member is equipped a movable ring forming an adjustable gap with the camera body, the body and the inlet connection being installed rotatably. Sources of information taken into consideration by the expert examination 1. Author's certificate of the USSR And 391896, cl. B 22 D 7/12, 197K 2. USSR author's certificate N 404546, cl. At 22 O 7/12. 1972.