Refractory material lining structure

Abstract

The utility model discloses a refractory material lining structure, which is characterized in that an unshaped refractory material is shaped, 97SiC and 88 alumina are selected to prefabricate refractory bricks, the product performance is excellent, the erosion resistance is strong, each prefabricated refractory brick is uniform in specification, light in material, small in size and convenient in site construction, and the shaped refractory bricks are anchored by utilizing a hook anchoring mode, so that the refractory materials are not damaged. The process of long-distance pouring is reduced, the overall construction quality is effectively improved, large-area connected refractory bricks are combined with a medium-density sealing material for overall sealing, all possible airflow and powder channels are locked, erosion inside a working layer is reduced, the service life of the refractory material lining structure is prolonged, and the service life of the lining structure is prolonged. The aerogel product and the nano-plate are compounded between the working layer and the equipment shell for heat insulation, the temperature of the equipment shell can be reduced by 50 DEG C, the temperature of the equipment shell is lower than 100 DEG C, and a nano-coating is constructed on the shell to protect the shell from being eroded by dew points.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement production equipment and relates to a cement kiln refractory material, in particular to a refractory material lining structure. Background Art

[0002] Cement rotary kiln is the main equipment of cement clinker dry and wet production lines. The kiln head hood is the intermediate body connecting the kiln head end and the clinker conveying process equipment. It is one of the important ways to observe the temperature of the kiln head. The grate cooler is used to cool and convey cement clinker. At the same time, it provides hot air for rotary kiln and decomposition furnace, etc. It is the main equipment for heat recovery in the firing system.

[0003] In recent years, with the continuous updating of cement technology and the continuous increase in the output of kilns, more stringent requirements have been put forward for the performance of refractory materials. Among them, the kiln head cover / grate cooler of the new dry cement production line usually uses a refractory lining structure of calcium silicate board insulation material plus refractory castables. Refractory castables are amorphous refractory materials, which often need to be mixed with water during construction. The construction pouring distance is long, the moisture is difficult to control, and the quality of construction is difficult to control. In addition, the lining structure is affected by high-speed airflow, clinker particles, high-temperature flue gas, alkali erosion, temperature and air pressure fluctuations during use. The refractory material is easily corroded in a short time, causing the strength of the refractory material to decrease or have no strength, causing the kiln head cover / grate cooler equipment shell to be exposed at high temperature. In addition, most cement kilns use alternative fuels, which are prone to form crusts on the surface of the refractory materials in these parts. The cleaning work lasts for a long time and is difficult, which has a great impact on the cement kiln. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a refractory lining structure, which solves the problems of short service life and easy erosion of refractory materials in the kiln head cover / grate cooler part of the new dry cement production line.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A refractory lining structure includes a working layer composed of multiple groups of prefabricated refractory bricks. The refractory bricks are fixedly connected to the equipment shell through a fixing component. The multiple groups of refractory bricks are integrally sealed with sealing materials to lock all airflow and powder channels.

[0007] Furthermore, the refractory bricks are made of amorphous refractory materials that are pre-processed and shaped, and the amorphous refractory materials are selected from 97SiC and 88 alumina.

[0008] Furthermore, the fixing assembly includes a first fixing member fixedly connected to the device housing, a second fixing member fixedly connected to the refractory bricks, and a third fixing member connecting the first fixing member and the second fixing member.

[0009] Furthermore, one end of the first fixing member is fixedly connected to the equipment housing, and the other end is provided with a through hole, the second fixing member is inserted into the through hole, and one end of the third fixing member is hung on the second fixing member through a hook, and the other end is inserted into the interior of the refractory brick for anchoring.

[0010] Furthermore, a layer of nano coating is sprayed on the device housing.

[0011] Furthermore, a nanoplate is provided between the working layer and the device housing, and the fixing component passes through the nanoplate.

[0012] Furthermore, an aerogel blanket is filled between the nanoplate and the device housing, and the fixing component passes through the aerogel blanket.

[0013] Furthermore, after the plurality of refractory bricks are connected, a sealing material having a medium-density self-flowing sealant is used to fill the gaps between the nano-board and the refractory bricks.

[0014] Beneficial effects of the utility model:

[0015] 1. The amorphous refractory materials are shaped and prefabricated into refractory bricks. A simple anchoring method is adopted. Each refractory brick is individually connected and fixed through a fixing component. The assembly is convenient and fast. The shaped refractory bricks are directly used for assembly, which reduces the long-distance pouring process and effectively improves the overall construction quality.

[0016] 2. Refractory bricks use 97SiC and 88 alumina as aggregates. The product has excellent performance and corrosion resistance. Each prefabricated refractory brick has uniform specifications and weighs 5.2kg. The material is light, the volume is small, and the on-site construction is convenient.

[0017] 3. After the refractory bricks are connected over a large area, a medium-density self-flowing sealing material is used to fill the gap between the nano-plate and the prefabricated bricks, blocking all possible airflow and powder channels, reducing erosion inside the working layer, and extending the service life of the refractory lining structure;

[0018] 4. A nano coating is constructed on the equipment shell to protect it from dew point erosion. Two layers of insulation, nano plates and aerogel blankets, are set between the working layer and the equipment shell. Compared with the original refractory materials, the temperature of the equipment shell can be reduced by 50°C, and the temperature of the equipment shell is lower than 100°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 As shown, the utility model provides a refractory lining structure, including a working layer composed of multiple groups of prefabricated refractory bricks 1, the refractory bricks 1 are fixedly connected to the equipment housing 3 through a fixing assembly 2, and the assembly is convenient. Each refractory brick 1 is individually connected at the tie rod, and the assembly is fast. The multiple groups of refractory bricks 1 are sealed as a whole with a sealing material 7 to lock all airflow and powder channels, reduce erosion inside the working layer, and extend the service life of the refractory lining structure.

[0022] Refractory brick 1 is made of amorphous refractory materials that are pre-processed and shaped. The material is light, and each prefabricated brick weighs 5.2kg. Compared with traditional prefabricated products, it is small in size, light in weight, and convenient for on-site construction. Amorphous refractory materials are made of 97SiC and 88 alumina, which have excellent corrosion resistance.

[0023] The fixing assembly 2 includes a first fixing member 21 fixedly connected to the device housing 3, a second fixing member 22 fixedly connected to the refractory brick 1, and a third fixing member 23 connecting the first fixing member 21 and the second fixing member 22. One end of the first fixing member 21 is fixedly connected to the device housing 3, and the other end is provided with a through hole 24, and the third fixing member 23 is inserted into the through hole 24. One end of the second fixing member 22 is hung on the third fixing member 23 through a hook 25, and the other end is inserted into the interior of the refractory brick 1 for anchoring, which is convenient for installation.

[0024] A layer of nano coating 4 is sprayed on the equipment housing 3 to protect the equipment housing 3 from dew point erosion. A nano plate 5 is provided between the working layer and the equipment housing 3, and an aerogel blanket 6 is filled between the nano plate 5 and the equipment housing 3. The fixing component 2 penetrates the nano plate 5 and the aerogel blanket 6, thereby forming two layers of heat insulation between the working layer and the equipment housing 3. Compared with the original refractory material configuration, the shell temperature can be reduced by 50°C, and the shell temperature is lower than 100°C. After the refractory bricks 1 are connected over a large area, a sealing material 7 with medium-density self-flowing is used to fill the gap between the nano plate 5 and the refractory bricks 1.

[0025] During the construction of the utility model, first, the amorphous refractory material is shaped, and the refractory material is prefabricated into refractory bricks 1 of set specifications in the factory, and one end of the second fixing member 22 is inserted into the inside of the refractory brick 1 for anchoring by using a hook anchoring method; then, a layer of nano coating 4 is sprayed on the equipment housing 3, and then the first fixing member 21 is welded to the equipment housing 3, and the third fixing member 23 is inserted into the through hole 24 at one end of the first fixing member 21, and the hook 25 at one end of the second fixing member 22 is hung on the third fixing member 23, so that a soft connection is formed between the refractory brick 1 and the second fixing member 22; then, the nano plate 5 and the aerogel blanket 6 are filled between the equipment housing 3 and the refractory brick 1; finally, after the refractory bricks 1 are connected to each other over a large area according to the above steps, a sealing material 7 with medium-density self-flowing is used to fill the gap between the nano plate 5 and the refractory brick 1.

[0026] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A refractory lining structure, characterized in that: The invention comprises a working layer composed of a plurality of groups of prefabricated refractory bricks (1), wherein the refractory bricks (1) are fixedly connected to a device housing (3) through a fixing assembly (2), and a sealing material (7) is used to seal the plurality of groups of refractory bricks (1) as a whole, so as to lock all airflow and powder channels.

2. The refractory lining structure according to claim 1, characterized in that: The refractory brick (1) is made of amorphous refractory materials which are pre-processed and shaped.

3. The refractory lining structure according to claim 1, characterized in that: The fixing assembly (2) comprises a first fixing member (21) fixedly connected to the device housing (3), a second fixing member (22) fixedly connected to the refractory brick (1), and a third fixing member (23) connecting the first fixing member (21) and the second fixing member (22).

4. The refractory lining structure according to claim 3, characterized in that: One end of the first fixing member (21) is fixedly connected to the equipment housing (3), and the other end is provided with a through hole (24). The second fixing member (22) is inserted into the through hole (24). One end of the third fixing member (23) is hung on the second fixing member (22) through a hook (25), and the other end is inserted into the interior of the refractory brick (1) for anchoring.

5. The refractory lining structure according to claim 1, characterized in that: A layer of nano coating (4) is sprayed on the device housing (3).

6. The refractory lining structure according to claim 1, characterized in that: A nanoplate (5) is provided between the working layer and the device housing (3), and the fixing component (2) passes through the nanoplate (5).

7. The refractory lining structure according to claim 6, characterized in that: An aerogel blanket (6) is filled between the nanoplate (5) and the device housing (3), and the fixing component (2) passes through the aerogel blanket (6).

8. The refractory lining structure according to claim 7, characterized in that: After the multiple refractory bricks (1) are connected, a sealing material (7) with medium density and self-flowing properties is used to fill the gaps between the nanoplate (5) and the refractory bricks (1).

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