SU50665A1 - Open-hearth furnace with bezarochnoy front wall - Google Patents

Description

In the front walls of open-hearth furnaces, there are usually columns with heels, on which the arches above the roof windows are supported. The arches are often knocked out when the charge is mechanically charged 1 and quickly heat up along with the i columns.

In addition, the main beam, suspended from the binding and supporting the main arch of the open-hearth furnace, is laid in the laying of arches and posts, j in connection with which it is necessary to make the posts at the top excessively thick, and at 80-90 °. The support beam quickly I burns out and during each repair of the roof changes .I

To eliminate these disadvantages j, open-hearth i furnaces have already been proposed, in which the saddle side j of the window is overlapped by the furnace roof, and the slab or beams of the front wall are bent. A similar open-hearth furnace with a bezparochny front wall with overlapping of the charging windows of its own working space is related to the present invention.

A feature of the proposed furnace is that the sub-beam beams of the furnace roof are completely removed from the masonry of the front wall of the furnace and are located above the water-cooled window frames, adjacent to them

the external surface of the front wall, the furnace, and, moreover, the beams of the front wall of the furnace are curved in the center of the access windows.

The design of the present invention is explained in FIG. 1, 2, 3 and 4 of the drawing.

FIG. 1 shows a view from the front wall side, FIG. 2 and 3-sections on AB and CD of FIG. 1, and in FIG. 4 is a section through EF of FIG. 2

If (or I-beam /) at the window level is set aside from the masonry by 250-300 mm. Underframe beam 2 is suspended by bolts 3 to the wrapping of slab or I-beams at their upper end (not shown in the drawing). The arch by means of a standard shaped brick rests on a sub-beam 2, which is protected from the bottom by a frame-window cooled by cooling 4. The armature of the front wall is lower than the threshold of the window 5 of a usual construction.

The support beam 2 can be made with a gas pipe poured in the bottom trough for cooling it with water. At the height of the lower edge of the brick, the angle between the beam 2 and the frame 4 must be filled with a shotcrete apparatus or other known method.