SU1408179A1 - Unloading end of rotary furnace - Google Patents

Abstract

The invention relates to the designs of the discharge end of rotary kilns and can be used in the metallurgical industry for calcining lumpy materials, such as dolomite or limestone, and in other industries that use rotary kilns for heat treatment of bulk materials. The purpose of the invention is to increase the operational reliability and durability of the lining. For this base, the end plates 3, arranged around the circumference of the end shell, are made with ribs 4, in the holes of which the strings 5 are hinged, passed through the holes of the guide rings, which are rigidly fixed to the end shell, which is made with longitudinal grooves 10 for accommodating the end edges plates When the furnace is operating, the end plates 3 are constantly pressed against the refractory bricks 2 and the end plates 3 are securely connected to the end shell, while the end plates do not slip along the inner wall of the shell even in the absence of lining. By fixing the rods 5 in the holes ribs 4 face pligts exclude the occurrence of overturning moment on end plates in the absence of refractory bricks 2. 1 Cp f-ly, 3 ill. (L

Description

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The invention relates to the designs of the discharge end of a rotary kiln and can be used in the metallurgical industry for calcining lumpy materials, such as dolomite or limestone, and other industries using rotary kilns to heat bulk materials.

j The purpose of the invention is to increase the operational reliability and durability of the fugierovka.

FIG. Figure 1 shows the discharge chamber of a rotary kiln, longitudinal section; -la FIG. 2 is a section A-A in FIG. one; on |) 3 shows the node I in FIG. one.

The discharge end of the vlapping furnace contains an end shell 1, lined with 1 refractory brick 2, and end 1LITS 3, placed around the circumference of the end shell 1. The bases of the end plates 3 are made with ribs 4 with holes in which the rods 5 are hinged through holes guide rings b and 7, rigidly fixed to the end shell of the furnace.

At the free ends of the rods 5 times. Resilient elements in the form of a package of cup springs 8 fixed with nuts 9. The end shell i is made with longitudinal grooves 10 for accommodating the ribs 4 of the end plates 3. The segments 11 are rigidly fixed on the end of the end shell 1 by means of rods 12, which freely enter end holes 13 in holes 13 and are in contact with the walls of the latter.

The discharge end of the rotary kiln operates as follows.

At the end of the lining operation, before starting the kiln with nuts, 9 clamp the elastic elements, the cup springs 18, to a force that ensures that the end plates 3 are reliably pressed against the refractory bricks 2 of the kiln's lining.

When the furnace is heated during the initial period of operation, the refractory lining (bricks 2) is lengthened in temperature, while the end shell 1 of the discharge end of the rotary kiln remains still cold. When this occurs, the longitudinal

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the forces acting on the end plates and the elastic elements displacing them, the springs 8 are compressed, and in the steady state operation, when the furnace body is heated, the end plates 3 under the influence of the springs 12 retract, constantly ensuring the preload of the end plates 3 to the refractory bricks 2.

The presence of the ribs 4 on the end plates 3 with their location in the longitudinal grooves 10 of the shell 1 provides a reliable connection of the end plates 3 with the shell 1 and eliminates slipping of the end plates 3 along the inner wall of the shell 1 even in the absence of lining.

The installation of the segments 11 at the end of the shell 1 allows to increase the operational reliability of the discharge end. The fastening of the rod 5 in the holes of the ribs 4 eliminates the occurrence of the overturning moment on the end plates 3 in the absence of a refractory brick 2 and does not require rigidly connecting the end plates by welding each other, which is especially difficult in the manufacture of end plates of cast iron or heat-resistant cast steels.

The proposed unloading end of the rotary kiln makes it possible to increase the reliability of the kiln operation and the lining durability.

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Claims (2)

1. The unloading end of the rotating PE-1, containing the end shell, end plates, rods with elastic elements at the free ends and guide rings with holes for the passage of the rods fixed to the furnace end flap, characterized in that, in order to increase the operational reliability and durability of the lining, the bases of the end plates are made with ribs with holes for fastening the rods, and the end shell has longitudinal grooves for accommodating the ribs end plates. 2. The discharge end according to Claim. 1, characterized in that it is provided with an end shell rigidly fixed on the end face. along its circumference by segments in contact with the walls of the end plates. 7J C} ig.1 J / 2 // five phage. five 183