SU1415014A1 - Lining of rotary furnace - Google Patents

Abstract

The invention relates to the technology of firing bulk materials and can be used for lining the drying zone with a refractory brick of rotary kilns. used in the metallurgical, building, and other industrial sectors. The aim of the invention is to improve the performance of the furnace and prevent material from being poured through the retaining ring. The lining in the drying zone on the side of the retaining ring 6 is made of dense and lightweight refractory bricks 7 and 9 of varying heights with a 2: 3 ratio along the length of the furnace and solid rings around the circumference, forming an annular protrusion 8 and an annular groove 10 with spiral-shaped spiral outlets ridges 1 1 and channels 12, formed by alternating dense and lightweight refractory bricks 7 and 9 with a corresponding power of 2: 3 in circumference and length with simultaneous displacement of 7 or 9 by one brick. 5 ill. with s

Description

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The invention relates to the technology of burning of lump materials and can be used for lining the refractory brick drying zone of rotary kilns, which are used in the metallurgical, construction and other industries.

The purpose of the invention is to increase the productivity of the cable and to eliminate material overflow through the retaining ring. i FIG. I shows the lining of the rotating furnace in zones, section; pas figs. 2 — ID A in FIG. 1 with a scan of the inner surface of the masonry; in fig. 3 - section 5-B in FIG. 2; in fig. 4 - ariapt loading and material from the butt but oblique chute, as a result; in fig. 5 - option of loading material through the window of the cochlear feeder, |) cut.

I The lining of the rotary kiln is located in IB casing 1, KOTOpbiii contains zones | ki 2, preheating 3. firing 4, and a coolant 5.

 In zone 2 of the cyiiHsM from the end, the lining of the node is necessary to the node 6 and consists of the refractory brick 7 but the furnace length is two rows and the circumference is a solid ring, forming an annular ledge 8. Further in the direction of heating 3 the lining formed by a lightweight refractory tube 9 along the length of a nets of three rows and a circle with a continuous ring, forming an annular groove 10 with screw-shaped ridge I and I and screw-shaped Katials 12 formed by alternating of an aerosol fire-resistant brick 7 to lightweight firearms kirnicha 9 with COOTHOIHC IIH-2: 3 along the circumference and length of the furnace with a simultaneous displacement of one brick 7 or 9, forming protrusions 13 on the side walls of the screw-shaped channel 12 made of refractory bricks 7. Tortsova 4; ic .i zone 2 days located over dust chamber 14. The loading of the mass transfer into the blind is carried out from the end of the basics (1 est heat 1G), and when it is loaded with the help of a 1-pixel pyga 16 - through the window 17.

During the operation of the rotating wire in the option of loading the material from the butt end: - Noah 15, the material is fed in a continuous stream into the working cavity of the furnace of the drying zone 2 onto the circular chute K). Since there is no slope to the cooling zone 5, the material in the circular groove 10, shifting toward the slope, flows evenly through the helical channels 12 into the heating zone 3. Moving, but without any difficulty, but to the screw-shaped channels 12, the material practically does not linger in the zone 2 of the bag and does not create a pressure on the pick ring b, and the presence of strung protrusions 13 on the side walls of the screw-shaped channels. SE 12 formed by CMCHIC- by the dense refractory bricks 7 by

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the length of the furnace on one brick 7, contributes to the non-mixing of the material, u.uchuchsha heat exchange.

During the operation of the rotary kiln in the material loading variant with the inside of the cochlear feeder 16 through the window 17 in the drying zone 2, the bulk of the material, filled in the spiral channels 12, moves to the preheating zone 3.

The opening of the screw-shaped channels 12 with a screw line along the furnace and the presence of stepped protrusions 13 prevent the material from moving towards the retaining ring 6. And at maximum load only part of the material is placed in the ring groove 10. The thickness of the material layer does not exceed the height the collar 8, adjacent to the sub-ring 6, and excludes ne) material of the material in the dust chamber 14.

Thus, the front end of the ring stun 8 made of a raft fireproof brick 7 at the retaining ring; 1 finger 6 and the ring trench 10 of the lightweight refractory brick 9 with spiral screw 1 children 11 out of a dense refractory brick 7 and screw channel 12 of the the lightweight firestone kirnicha 9 facilitates the unrestricted movement of material from zone 2 of cyiHKH to zone 3 of preheating, with a nesting movement in zones of calcination | a 4 and cooling 5, excluding its accumulation in the drying zone 2 with an increase in the amount of material supplied to the furnace, and the presence of 1–1 stepped protrusions 13 from the refractory corn 7 on the side walls of the screw-shaped channels 12 contributes to iie-1EN1Iva1P- 1 oh of the material, when ei O is not in iH.eimn, in zone 3 of heating, it prevents movement of 1; O it in one hundred) of the retaining ring 6.

Formula a and 3 gains

(-Rilling B) a1ajun1.ys iieMii, mainly for firing lumpy materials, vino, 1d11a and the drying zone with alternation, 1 and 1 differ in the 1st height. Dense and lightweight refractory bricks, characterized by: with the goal of noBUineini; -i, the manufacturers of the need to nechy and eliminate; 1 and pouring material through the retaining ring, (}) wiping from the retaining ring side out, with 1 finger end of dense kirnich and ring gutter, 1-weight bricks with a ratio of 2: 3 m along the length of the furnace and moving from -; The trees are helical ridges and channels formed by the alternation of dense i; lightweight kirniches with a ratio of 2; 3 along the length of a circle and a circle with a simultaneous change of 1, a.

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Claims (1)

Claim Lining of a rotary kiln, mainly for the firing of lumpy materials, performed in the drying zone with alternating dense and lightweight refractory bricks of different heights, characterized in that. in order to increase the productivity of the furnace and eliminate the pouring of material through the retaining ring, the lining on the side of the retaining ring is made with an annular protrusion of dense bricks and an annular groove of lightweight bricks with a ratio of 2: 3 along the length of the furnace and with spiral ridges and channels extending from the trench formed by alternating dense and lightweight bricks with a ratio of 2: 3 along the length of the furnace and the circumference with a simultaneous displacement of one brick.