RU216871U1 - DEVICE FOR REMOVING SLAG FROM INDUCTION FURNACE - Google Patents

Abstract

The utility model relates to the field of ferrous metallurgy. A device for removing slag from an induction furnace contains a working element for immersion in the melt and structural elements for moving it. The working element (1) is made in the form of a blade made of a graphite washer obtained from a failed electrode for an electric arc furnace. Semi-axle (3) is rigidly fixed on the blade by means of a three-toed tab (2), installed in the drilled holes (4) of the blade and filled with cast iron melt. The semi-axis is permanently connected with the tube (5) by the second end, and the reverse end of the tube is permanently connected to the handle (6) for moving the device for winding, winding furnace slag on the blade. EFFECT: simplification of the device design. 4 w.p. f-ly, 2 ill.

Description

The utility model relates to ferrous metallurgy, in particular to a device for removing and removing slag in the process of iron smelting in induction furnaces.

The device is designed for long-term removal of slag from the surface of cast iron in the process of its smelting in an induction furnace.

The following analogues are known (the design of devices for removing slag.

1. A device for removing slag according to AC SU No. 378417, published on April 18, 1973, containing a water-cooled drum and a trunk mounted in a bearing support, pivotally suspended on a trolley moving along a console, fixed with a spike at the working window of the furnace. The chain conveyor is located on the trunk, in a pipe having a cutout with a lower edge in the form of a scraper at the point of contact with the drum, while the conveyor and the trunk have a single drive located on the trunk.

2. A device for removing slag from a pouring ladle according to author's certificate SU No. 457864, published on January 25, 1975, containing a water-cooled stay of two pipes fastened with strips with a gap, with drive rollers, guide rollers, a lever, a pneumatic cylinder, a flip roller, an asterisk , limit switch and stops.

3. A device for removing slag according to AC SU No. 775599, published on 10/30/1980, containing a drive cart with a thrust roller and with vertical guides fixed with struts, connected by a frame in the lower part, mounted on a rail track placed on beams; in the vertical guides there is a carriage with its own guides with a vertical bar fixed on it, on one side of which there is a gear rack that engages with a gear interconnected with the drive; in the bearing supports there are a driving one connected through a bevel gear with a drive, and a driven vertical columns, at the lower end of each of which there is an axis with a lock and a working body - a semi-bucket with a pin, and kinematically interconnected in the upper part by gears.

4. A device for removing slag from the surface of a metal melt according to utility model RU No. 13338, published on April 10, 2000, containing a submersible displacer equipped with a jig in the form of a guide for a submersible lance, having a bearing traverse and fixed on it with an eye to form restrictive support ledges , in versions - eccentric protrusions.

5. A device for removing slag from the surface of the melt according to the patent for the invention RU No. 2316411, published on February 10, 2008, containing a working body immersed in the melt in the form of a cylindrical container formed by a perforated bottom with annular ridges and a shell and lined on both sides with thermal protective layers, rigidly fixed on a vertical support with heat-resistant lining bushings.

6. A device for removing slag from the pouring ladle according to the patent for the invention RU No. 2385202, published on March 27, 2010, containing a platform; a guide boom in the form of a tubular trunk carrying three belts of retaining rollers; rod with external longitudinal and transverse fins with three box-shaped guides; rod drive; boom lift cylinders, swing cylinder, thrust and support rollers; drive chains; holding roller belts; scraper; persistent box guide; support box guides; working and return branches of drive chains.

As a prototype, the design of a device for downloading slag according to AS SU No. 372419, publication 03/01/1973, containing a cooled lined scraper with a guide ledge and a pneumatic cylinder with a frame, fixed on a fixed horizontal axis, the frame has a guide slot, and the pneumatic cylinder is pivotally mounted on the axis.

The common disadvantages of analogues and the prototype are large dimensions, bulkiness and design complexity, as well as a large number of rotary parts and drives that require tuning and adjustment, difficulty and cost of repair work, as well as the use of an extensive water cooling system.

The technical result achieved by the present utility model is to create a non-water-cooled device of a simplified design in the form of a blade with a low adhesive compared to a metal working surface for removing, separating and removing slag from an induction furnace.

The specified technical result is achieved due to the fact that the device for removing slag from an induction furnace, including a working element for immersion in the melt, as well as structural elements for moving it, characterized in that the working element is made in the form of a blade from a graphite washer obtained from failure of the electrode for an electric arc furnace, and the semi-axis is rigidly fixed on the blade by means of a three-toed foot, installed in the drilled holes of the blade and filled with molten cast iron, while the semi-axis is permanently connected by the second end to the tube, the reverse end of which, in turn, is permanently connected to the travel handle devices for winding, winding furnace slag on a blade.

In a particular case, the blade is obtained from a broken electrode for an electric arc furnace by means of transverse cutting.

In a particular case, the holes in the blade are made at an angle to each other in the form of divergent chords.

In a particular case, the axle shaft is permanently connected to the first end of the tube by welding.

In a particular case, the reverse end of the tube is permanently connected to the handle by welding.

Before pouring with molten iron, the part of the axle shaft with a three-toed foot placed in the holes drilled in the graphite washer must be heated to the maximum, in particular, with a gas burner, and placed in these holes with a gap. Cast iron melt with a temperature of at least 1450°C is poured into the holes at a time with a full spoon (scoop) for sampling liquid metal.

Studies conducted on sources of patent and scientific and technical information have shown that the claimed device for removing slag from an induction furnace is unknown, that is, it meets the criterion of "novelty".

The essence of the utility model is characterized by the graphic materials presented in Fig.1, 2, where Fig.1 shows a General view of the device (without the image of the handle), showing the principle of fastening a three-toed half-axle foot with a graphite washer in a dedicated attachment area, Fig.2 (general view of a device for removing slag from an induction furnace.

A device for removing slag from an induction furnace with a working body for immersion in the melt, made in the form of a blade from a graphite washer 1, obtained by transversely cutting a failed electrode for an electric arc furnace, fastened to a three-toed foot 2 of a semi-axis 3 inserted into drilled holes 4, by pouring molten iron into them (zone A and zone x at the ends of the drilled holes in figure 1), while the axle shaft 3 is permanently installed, in a particular case (welded by welding into pipe 5, to which, in turn, is integrally installed, in a particular case (a handle 6 is welded to rotate the entire structure in order to wind, wind furnace slag on the blade.

The inventive device for removing slag from an arc furnace can be used in an iron foundry and meets the criterion of "industrial applicability".

Under production conditions, a device for removing slag from an induction furnace was manufactured and tested, which showed effective removal, separation and removal of slag due to its significantly lower adhesion to a graphite surface compared to a metal one. The device, in addition to a simplified design, is made lighter due to the low weight of the graphite washer of the blade with an increased service life (up to 700 h).

The device for removing slag from the induction furnace is installed with a pipe on a roller support, after which, by rotating the handle, covering the entire area of the metal melt mirror, the graphite washer is manipulated to wind, wind portions of slag on it, after which the blade rises on the support and turns to the edge of the furnace for dumping slag from the graphite washer into the slag.

Claims (5)

1. A device for removing slag from an induction furnace, including a working element for immersion in the melt, as well as structural elements for moving it, characterized in that the working element is made in the form of a blade from a graphite washer obtained from a failed electrode for an electric arc furnace, moreover, the semi-axis is rigidly fixed on the blade by means of a three-fingered foot, installed in the drilled holes of the blade and filled with molten cast iron, while the semi-axis is integrally connected by the second end to the tube, the reverse end of which, in turn, is integrally connected to the handle for moving the device for winding, winding on the blade furnace slag. 2. The device according to claim 1, characterized in that the blade is obtained from a failed electrode for an electric arc furnace by means of transverse cutting. 3. The device according to claim. 1, characterized in that the holes in the blade are made at an angle to each other in the form of divergent chords. 4. The device according to claim 1, characterized in that the axle shaft is permanently connected to the first end of the tube by welding. 5. The device according to claim 1, characterized in that the reverse end of the tube is permanently connected to the handle by welding.

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