CN219624484U - Ignition furnace lining and ignition furnace - Google Patents

Abstract

The utility model discloses an ignition furnace lining and an ignition furnace, wherein the ignition furnace lining comprises a plurality of precast blocks fixed below a furnace shell of the ignition furnace, wherein a curved dislocation groove is concavely formed on the periphery of one of the two adjacent precast blocks, a bulge matched with the dislocation groove in shape is arranged on the periphery of the other precast block, and the dislocation grooves and the bulge of the two adjacent precast blocks are mutually matched. The ignition furnace comprises an ignition furnace lining and a burner. According to the furnace lining of the ignition furnace and the ignition furnace disclosed by the utility model, the curved dislocation grooves and the protruding parts matched with the shapes of the curved dislocation grooves are arranged, so that the contact positions of two adjacent precast blocks form curved dislocation joints, flame in the furnace turns to the furnace top, the phenomenon that the flame in the furnace directly burns the furnace top is avoided, the problem that the furnace top is burnt through is effectively avoided, and the operation safety and the service life of the ignition furnace are effectively improved.

Description

Ignition furnace lining and ignition furnace

Technical Field

The utility model relates to the technical field of sintering, in particular to an ignition furnace lining and an ignition furnace.

Background

In the modern sintering process, the ignition furnace is a throat device of a sintering system, is an important device with large influence on production quality, high operation difficulty, high safety hazard and long maintenance period, and the quality of ignition of the ignition furnace directly influences the yield and quality of the sintered ore.

The ignition furnace generally comprises a burner, a refractory lining, a furnace shell, a furnace top pipeline, an operation platform and the like. According to the service condition of the ignition furnace of each large steel factory, most of the problems of the ignition furnace are caused by damage of the refractory, the service life of the refractory is generally about 4 years, and the refractory is often damaged under the condition that the operation time of the ignition furnace is not long (in the quality guarantee period). From this, it can be determined that the life of the ignition furnace is mainly dependent on the life of the refractory. The ignition furnace fire-resistant material is easy to damage and mainly comprises reasons such as construction, operation and use, design and the like.

The ignition furnace can be divided into an integral cast-in-situ structure and an integral prefabricated structure according to a refractory masonry method. The fireproof lining of the integral cast-in-situ mechanism ignition furnace is formed by casting an unshaped fireproof material on site, and has the characteristics of good overall performance and long service life, but because the cast-in-situ ignition furnace has the defects of long construction period, complex construction process and the like, most sintering plants adopt the integral prefabricated ignition furnace. The fire-resistant furnace lining of the ignition furnace with the integral prefabricated structure is assembled by prefabricated blocks, has good sealing performance and is more in use.

In the prior ignition furnace with the precast block structure, the precast block is hung on a furnace top frame through a hanging piece. Straight through seams are formed among the precast blocks, flames in the furnace can directly burn the furnace top through the gaps among the precast blocks, the furnace top can be easily burnt through after long time, and the phenomenon of furnace top ignition occurs. Because the furnace roof is provided with a gas pipeline, the furnace roof ignition can seriously influence the operation safety of the ignition furnace, and the service life of the ignition furnace is reduced.

In view of this, it is necessary to provide an ignition furnace lining and an ignition furnace that solve the above-mentioned drawbacks.

Disclosure of Invention

The utility model mainly aims to provide an ignition furnace lining and an ignition furnace, and aims to solve the problem that the furnace top of the existing ignition furnace is easy to burn through.

In order to achieve the above purpose, the utility model provides an ignition furnace lining, which comprises a plurality of precast blocks fixed below a furnace shell of an ignition furnace, wherein a curved dislocation groove is concavely formed on the periphery of one of the adjacent precast blocks, a protruding part matched with the dislocation groove in shape is arranged on the periphery of the other precast block, and the dislocation groove and the protruding part of the adjacent two precast blocks are mutually matched.

Preferably, the dislocation groove is arc-shaped.

Preferably, the side edge of each prefabricated block is a straight line edge, and the dislocation groove and the protruding part are formed on the straight line edge.

Preferably, two adjacent precast blocks are cut with a material removing notch on the side edge close to each other, a material carrying groove is formed after the two material removing notches are spliced, casting materials are cast in the material carrying groove, and the material removing notch is located on the same side of the dislocation groove and the protruding portion.

Preferably, the carrying groove is funnel-shaped.

Preferably, expansion joints are arranged on the side edges, close to each other, between two adjacent precast blocks, and fiber carpets are filled in the expansion joints.

Preferably, the fiber blanket is an aluminum silicate fiber blanket.

Preferably, the casting material is a refractory material.

Preferably, the furnace shell is a steel structure furnace shell.

The ignition furnace comprises the ignition furnace lining and further comprises a burner, wherein the burner is inserted into a hearth from a furnace shell of the ignition furnace.

Compared with the prior art, the ignition furnace lining and the ignition furnace provided by the utility model have the following beneficial effects:

according to the furnace lining of the ignition furnace and the ignition furnace, the curved dislocation grooves and the protruding parts matched with the shapes of the curved dislocation grooves are arranged, so that the contact positions of two adjacent precast blocks form curved dislocation joints, flame in the furnace turns to the furnace top, the phenomenon that the flame in the furnace directly burns the furnace top is avoided, the problem that the furnace top is burnt through is effectively avoided, and the operation safety and the service life of the ignition furnace are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a ignition furnace according to the present utility model;

FIG. 2 is a schematic view of the lining of the ignition furnace shown in FIG. 1

FIG. 3 is a schematic view of the prefabricated block shown in FIG. 1;

fig. 4 is a schematic structural view of another embodiment of an ignition furnace provided by the present utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1-3, the utility model provides an ignition furnace lining, comprising a plurality of precast blocks 2 fixed below a furnace shell 1 of an ignition furnace, wherein a curved dislocation groove 3 is concavely formed on the periphery of one precast block 2 in two adjacent precast blocks 2, a protruding part 5 matched with the dislocation groove 3 in shape is arranged on the periphery of the other precast block 2, and the dislocation groove 3 and the protruding part 5 of the two adjacent precast blocks 2 are mutually matched. By arranging the curved dislocation groove 3 and the protruding part 5 matched with the shape of the dislocation groove, the contact position of two adjacent precast blocks 2 forms a curved dislocation 6, flame in the furnace turns to the furnace top, the phenomenon that the flame in the furnace directly burns the furnace top is avoided, the problem that the furnace top is burnt through is effectively avoided, and the operation safety and the service life of the ignition furnace are effectively improved.

Specifically, in this embodiment, the dislocation groove 3 has a circular arc shape. Meanwhile, the shape of the protruding part 5 is matched with the shape of the protruding part, the edge of the protruding part 5 is arc-shaped, and the connecting seam between two adjacent precast blocks 2 is arc-shaped, so that arc-shaped bending is formed, and the phenomenon of directly burning the furnace roof is avoided. It is worth mentioning that the boss 5 forms slick and sly outer structure for prefabricated section 2 has avoided the edges and corners that the linear type protruding structure formed, has reduced and has produced structural damage because of the collision in the installation, has guaranteed prefabricated section 2 structural integrity, thereby the effectual refractory performance that improves the furnace lining.

In another embodiment, as shown in fig. 4, the staggered joint 6 may be a concave-convex fold line shape, or may be a concave-convex gear shape, so that the staggered joint 6 between two adjacent precast blocks 2 can be formed, and the problem of directly burning the furnace roof by flame is avoided.

Specifically, the side edges of each prefabricated block 2 are straight edges, and the dislocation groove 3 and the protruding portion 5 are formed on the straight edges. That is, for one prefabricated block 2, the dislocation groove 3 and the protruding part 5 are arc lines on the same side, and other positions are straight lines, so that the prefabricated block is beneficial to assembly.

As shown in fig. 2 and fig. 3, two adjacent sides of the precast block 2, which are close to each other, are cut with a material removing notch 7, and after the two material removing notches 7 are spliced, a material carrying groove 8 is formed, casting materials 9 are cast in the material carrying groove 8, and the material removing notch 7 is located on the same side of the dislocation groove 3 and the protruding portion 5. Namely, one side of the dislocation groove 3 is formed on the precast block 2, and the material removing notch is also formed at the same time, so that for two adjacent precast blocks 2, a dislocation connecting seam is formed by splicing two adjacent precast blocks 2, and the loading groove 8 is connected with the connecting seam into a whole. The staggered joint 6 formed between two adjacent precast blocks 2 is used for avoiding that flames in the furnace directly burn the casting material 9 on the furnace top, so that the service life of the casting material 9 can be prolonged.

Wherein, in the middle part of the ignition furnace, that is to say, the two sides of the precast block are provided with precast block positions, and the carrying groove 8 is funnel-shaped. The bottom of the funnel is connected with the staggered joint 6, and the pouring material 9 is poured into the funnel-shaped carrying groove 8.

As shown in fig. 2, the side edges, which are close to each other, between two adjacent precast blocks 2 are provided with expansion joints 10, and the expansion joints 10 are filled with fiber blankets 11. Since the prefabricated rotor expands during sintering, the expansion joint 10 is provided for reserving expansion space for the prefabricated blocks 2, so as to avoid extrusion between the prefabricated blocks 2.

Specifically, in this embodiment, the fiber blanket 11 and the casting material 9 are both refractory materials. The fiber blanket 11 is an aluminum silicate fiber blanket. Alumina silicate fiber blankets, also known as ceramic fiber blankets, are called ceramic fiber blankets because one of the main components is alumina, which is the main component of porcelain. The ceramic fiber blanket is mainly divided into a ceramic fiber blowing blanket and a ceramic fiber silk-throwing blanket, and the ceramic fiber silk-throwing blanket is superior to the ceramic fiber blowing blanket in heat preservation performance due to the fact that fiber filaments are long and the heat conduction coefficient is small.

Specifically, in this embodiment, the furnace shell 1 is a steel structure furnace shell, and has high structural strength and long service life.

The ignition furnace lining assembling method comprises the following steps: after the steel structure frame of the furnace shell of the ignition furnace is assembled, a first row of precast blocks 2 are installed, and the precast blocks 2 are hung on the furnace top frame through hanging pieces. Similarly, the second row of precast blocks 2 is hung, before the second row of precast blocks 2 is hung, an aluminum silicate fiber blanket is attached between the first row of precast blocks 2 and the second row of precast blocks 2, and the appearance structures of the first row of precast blocks 2 and the second row of precast blocks 2 are matched to form an arc-shaped staggered joint. And installing other precast blocks in the same step until all the precast blocks are installed, and filling the amorphous castable into the loading groove 8 after all the precast blocks are installed.

The utility model also provides an ignition furnace, which comprises an ignition furnace lining and a burner 12, wherein the burner 12 is inserted into a hearth from a furnace shell 1 of the ignition furnace.

According to the furnace lining of the ignition furnace and the ignition furnace, the curved dislocation grooves and the protruding parts matched with the shapes of the curved dislocation grooves are arranged, so that the contact positions of two adjacent precast blocks form curved dislocation joints, flame in the furnace turns to the furnace top, the phenomenon that the flame in the furnace directly burns the furnace top is avoided, the problem that the furnace top is burnt through is effectively avoided, and the operation safety and the service life of the ignition furnace are effectively improved.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. The utility model provides an ignition furnace lining, its characterized in that includes the prefabricated section of polylith under being fixed in the stove outer covering of ignition furnace, in two adjacent prefabricated sections, one of them the week side recess of prefabricated section is formed with curved dislocation groove, another the week side of prefabricated section be provided with dislocation groove shape assorted bellying, two adjacent prefabricated section dislocation groove with the bellying mutually support.

2. The firing furnace lining of claim 1, wherein the offset groove is circular arc shaped.

3. An ignition furnace lining according to claim 1, wherein the side edges of each of the precast blocks are straight edges, and the dislocation grooves and the protruding portions are formed on the straight edges.

4. The ignition furnace lining according to claim 1, wherein a material removing notch is cut on the side edge, close to each other, of each two adjacent precast blocks, a material carrying groove is formed after the two material removing notches are spliced, casting materials are cast in the material carrying groove, and the material removing notch is located on the same side of the dislocation groove and the protruding portion.

5. The firing furnace lining of claim 4, wherein the loading chute is funnel-shaped.

6. The firing furnace lining of claim 4, wherein the casting is a refractory material.

7. Firing furnace lining according to claim 1, characterized in that the side edges between two adjacent prefabricated blocks, which are close to each other, are provided with expansion joints, which are filled with fibre carpets.

8. The firing furnace lining of claim 7, wherein the fiber blanket is an aluminum silicate fiber blanket.

9. The firing furnace lining of claim 1, wherein the furnace shell is a steel structural furnace shell.

10. An ignition furnace comprising an ignition furnace lining according to any one of claims 1-9, further comprising burners inserted into the furnace chamber from the furnace shell of the ignition furnace.