RU2815230C1 - Slag storage device - Google Patents

Abstract

FIELD: ferrous metallurgy.

SUBSTANCE: invention relates to ferrous metallurgy, particularly to equipment for induction furnaces. Device comprises a platform, wherein the induction furnace comprises a drain head in the front part and a bed with a plain bearing, at that, the platform is adjacent to the front part of the induction furnace opposite the drain head and consists of a base with installed on its part adjacent to the induction furnace, box made in the form of a bottom from sheet steel with an angle welded along its perimeter, at that, the box is lined by striking of refractory bricks, connected with a refractory composition and is permanently connected to the base through an intermediate plate, which has a curved part protruding beyond the perimeter of the box, base and bed.

EFFECT: improved repairability due to minimization of used structural elements and use of waste materials.

4 cl, 1 dwg

Description

The invention relates to ferrous metallurgy, in particular to equipment for induction furnaces.

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

The following analogues are known - the design of devices for furnace lining elements.

1. Insulating block according to AC SU No. 918758, published on 04/07/1982, containing fibrous refractory material and metal elements for forming and fastening the block in the form of brackets made of magnetically conductive material, the opposite ends of which are wedged with a permanent magnet.

2. Fastening of the lining according to AC SU No. 520503, published 07/05/1976, containing a bracket and a flat anchor with a hole in the body and a shank bent at an angle to the plane of the body in order to increase the installation strength of the lining, made with ends bent in mutually opposite directions .

3. A panel made of refractory concrete according to AC SU No. 343135, published on June 22, 1972, containing a layer of concrete, a reinforcing mesh with anchors attached to a frame made of angles located along the perimeter of the outer surface of the panel with attachments attached to it to facilitate installation from the end sides with pins.

The design of a medium-frequency induction melting furnace is also known according to the utility model patent CN No. 206347863 dated July 21, 2017, which includes a platform for the electrolyzer with a rolling bearing and an articulated stand for lifting the support platform of the melting pot.

As a prototype, a furnace slag disk device is proposed, known from CN 101995160 A, F27D 3/15, 03/30/2011, D1, used for holding and transporting high-temperature aluminum slag, made in the form of a one-piece platform with stiffeners located on the lower surface of the platform and distributed in the form of a lattice. This design has greater structural strength, characterized by reduced structural thermal deformation, which makes it possible to increase the service life of the furnace slag disk.

The prototype and other analogues have the following disadvantages: the complexity of both the structures themselves due to the large number of main and auxiliary fastening elements, and the schemes for attaching them to the furnace, which leads to low maintainability.

Thus, the technical result of the present invention is to increase maintainability by minimizing the used structural elements and using waste materials.

The technical result is achieved due to the fact that the device for storing slag removed from the induction furnace contains a platform, while the induction furnace contains a drain sock in the front part and a frame with a sliding bearing, characterized in that the platform is adjacent to the front part of the induction furnace opposite the drain sock and consists of a base with a box installed on its part adjacent to the induction furnace, made in the form of a bottom made of sheet steel with a corner welded along its perimeter, while the box is lined with broken refractory bricks bound with a refractory composition and permanently connected to the base through an intermediate plate , which has a curved part protruding beyond the perimeter of the box, base and frame.

In a particular case, the box is permanently connected to the intermediate plate by welding.

In a particular case, the intermediate plate is permanently connected to the base by welding.

In a particular case, the curved part of the intermediate plate, which is subject to increased damage due to frequent splashes of molten metal, is made detachable for quick replacement, which further increases the maintainability of the site structure as a whole.

Research conducted using sources of patent and scientific and technical information showed that the claimed device for storing slag from an induction furnace is unknown and does not clearly follow from the studied level of technology, that is, it meets the criteria of “novelty” and “inventive step”.

The essence of the invention is characterized by the graphic materials presented in Fig. 1, which shows a section of the device along the longitudinal axis of the box with a plain bearing.

The device for storing slag from an induction furnace is a platform adjacent to the front part of the induction furnace opposite its drain spout (not shown in the figure) with at least one sliding bearing 3 located on the frame 2, consisting of a base - a box made in in the form of a bottom 5 made of sheet steel welded around the perimeter to a corner 4, while the box is lined with broken refractory bricks 6 bound with a refractory composition; the box is permanently attached, in a particular case, by welding, to the intermediate plate 7, the curved part of which, in a particular case made detachable, protrudes beyond the perimeter of the base 1 of the platform, the bottom 5 and the frame 2.

The device for storing slag from an induction furnace is used in an iron foundry and is located in the front zone of the tilting working platform of an induction crucible furnace and meets the criterion of “industrial applicability”.

During operation of the induction furnace, a box lined with broken refractory bricks with an intermediate plate having a protruding part of a curved shape, in a particular case made collapsible, protects the sliding bearing from overheating and jamming, and prevents leakage and burnout of its lubricant.

The use of the device is that the melter, by manipulating a scraper on a rod mounted on a support, removes and captures the slag formed during cast iron smelting on the bath mirror, after which it places and distributes it for temporary storage until the end of melting on top of the box lining, which allows minimizing how slag removal time and temperature drop when the induction furnace lid is open.

Claims (4)

1. A device for storing slag removed from an induction furnace containing a platform, wherein the induction furnace contains a drain sock in the front part and a frame with a sliding bearing, characterized in that the platform is adjacent to the front part of the induction furnace opposite the drain sock and consists of a base with an installed on its part adjacent to the induction furnace, a box made in the form of a bottom made of sheet steel with a corner welded along its perimeter, while the box is lined with broken refractory bricks bound with a refractory composition and permanently connected to the base through an intermediate plate, which has a curved part, protruding beyond the perimeter of the box, base and frame. 2. The device according to claim 1, characterized in that the box is permanently connected to the intermediate plate by welding. 3. The device according to claim 1, characterized in that the intermediate plate is permanently connected to the base by welding. 4. The device according to claim 1, characterized in that the curved part of the intermediate plate is detachable.