A slab continuous casting crystallizer protection slag automatically adding device

Abstract

A slab continuous casting crystallizer protection slag automatically adding device, pertaining to the field of continuous casting process equipment, includes a large hopper, electric valves, a feeding tube, a small hopper, a screw feeder, a two-dimensional movement mechanism and a base. The device uses gravity to fall material from height, so that the large hopper is far away from the crystallizer mouth, to increase storage amount and allow long time of continuous work; the small hopper with small size, the screw feeder and the two-dimensional motion mechanism are reasonably installed at the intermediate tanker flank nearby the crystallizer to avoid the obstruction to the observation and operation of workers because the device is mounted in front of the crystallizer; the precise control of the feed amount can be achieved by the screw feeder; the conveyer tube is totally enclosed, which avoids slag leakage and dust emission; orthogonal coordinate type two-dimensional motion mechanism can realize a larger area of protection slag uniform spreading, which adapts to different sizes of slabs and billet production; automatic uniform slag adding is achieved, billet surface quality can be improved and the labor intensity of workers is reduced.

Description

Technical field [0001] The invention belongs to the field of metallurgical continuous casting process equipment, and particularly relates to an automatic slab continuous casting mold mold flux automatic adding device, which is suitable for the production of slabs of different sizes. Background technique [0002] Mold powder for continuous casting mold is an indispensable auxiliary metallurgical material in steel continuous casting production. When casting a continuous casting mold, it is required to spread mold powder on the molten steel surface of the mold to form a slag layer to achieve the purpose of lubricating and preventing the molten steel from contacting air, thereby improving the quality of the billet. Compared with the traditional adding method of manual spatula, the mold powder automatic adding technology has the advantages of controllable adding time and adding amount, uniform adding, improving the surface quality of the billet, saving labor, and improving working con...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is that the screw feeder is fixed as a whole, which is only suitable for adding slag to the small-area billet crystallizer

The disadvantages of this device are: 1) A large number of workers operate in front of the crystallizer, and the device feeds materials from the front, which hinders the workers' operation; 2) Due to the limitation of the size of the trolley, it is difficult to make the hopper larger, so it is necessary to Manually frequently add mold slag to the hopper; 3) Horizontal swing with single degree of freedom is only suitable for thinner slab mold openings, and cannot better adapt to mold openings of different slab sizes

[0005] An existing mold powder automatic adding device, such as Japanese patent JP11239855, adopts single-degree-of-freedom horizontal swing and cooperates with the expansion and contraction of the sprinkler head in the radial direction, which is still only suitable for the crystallizer mouth of thinner slabs, and cannot better adapt to different slabs Dimensions of crystallizer mouth

[0006] In addition, the existing mold slag adding devices are all placed in front of the tundish truck, which hinders the operators from carrying out other tasks. Operators often need to observe whether there is any slag in the mold mouth, whether it needs to be cleaned or whether the mold slag is added evenly etc., and it is necessary to carry out work such as cleaning up slag

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