SU1367467A1 - Electric furnace for thermal treating of coal mass - Google Patents

Abstract

The invention relates to the field of heat treatment of coal (anthracite and lean) used for the manufacture of electrodes and concerns the design of an electric furnace intended for the treatment of coal mass. Its use will allow automatic mixing of the coal mass sequentially through several systems of electric arcs. In an electric furnace for heat treatment of coal mass, an electric arc refractory under the furnace is made of a series of oppositely inclined planes, one below the other with gaps between the lower edges of the planes and the wall of the furnace, to pour the mass from one plane to another. At the same time, the systems of electrodes between which electric arcs are formed are located at the gaps between the furnace wall and the ends of the inclined planes of the hearth. 1 h. item f-ly, 2 ill.

Description

Isobregenio relates to the area of heat treatment of coal (anthracite and t.ih.) used for the manufacture of electrodes, and concerns the design of electric power intended for the treatment of coal mass.

Purpose) The invention is to provide automatic movement of the coal mass sequentially through several electric arc systems.

On cjtHf. 1 shows an electric furnace for heat treatment of coal mass; in fig. 2 is a section A-L in FIG. one.

The electric furnace contains a steel casing 1, lined with coal blocks, refractory under, made of a series of oppositely inclined planes 2, one below the other with gaps between the lower edges of the planes and the wall of the casing, the inclination angle of which is 37-40 °. of magnesite brick as well. in places of high temperatures - from coal blocks - electrodes 3, between which electric arcs are formed, are located three but at the gaps between the furnace wall and the pile of two planes 2 and fed by three-phase current from the transformer, 6ynKdpbi 4, arranged in one another, for receiving the finished carbonaceous mass, means 5 for closing the bins, kelob 6, bunker 7. for charging coal mass, means 8 for adjusting the outlet, gas pipeline 9 for discharging waste (p1 of gases.

Uh, chuckboots work the following way.

Pre-crushed, unsuspended coal (anthracite or lean) since

measuring about 2 mm of particles is fed into the bunker 7, from where through an adjustable hole it gets to the first meeting of the y-plate plane 2. Moving down the inclined hot plane, anthracite is poured into the second and subsequent planes 2 through the volt arc formed by the electrodes.

If the calcination is reached between the first two arcs, the third row of electrodes is turned off. The finished carbon mass is discharged through the bunkers 4, the location of which one inside the other blocks air from entering the furnace, and when the mass is discharged through the lower bunker, the upper one is closed. Pipeline 9 removes waste gases for energy purposes. Thermally treated anthracite in the form of finished carbon mass is fed to the manufacture of electrodes.

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Claims (2)

1. An electric furnace for heat treatment of coal mass by an electric arc, characterized in that, in order to automatically move the coal mass successively through several systems of electric arcs, the onoeun furnace kiln is made of a series of oppositely inclined planes arranged one below the other with gaps between the lower edges of the planes and the wall of the furnace to transfer the mass from one plane to another. 2. Electric furnace according to claim 1, characterized in that the electrode systems, between which electric arcs are formed, are located at the gaps between the wall of the furnace and the ends of the inclined planes of the hearth. . / /// Fig.} Phage g