CN112082379A - Rotary kiln lining brick and rotary kiln lining building method - Google Patents

Abstract

The invention relates to a rotary kiln lining brick and a rotary kiln lining building method, wherein the rotary kiln lining brick comprises a lining brick and an anchoring piece embedded in the lining brick; at least 2 anchoring pieces are arranged along the longitudinal direction of the lining brick; one surface of the lining brick, which is attached to the inner wall of the rotary kiln shell, is an attaching surface, and the surface facing the center of the rotary kiln is a working surface; the anchoring part consists of an anchoring part body and anchoring part supporting legs, the two ends of the anchoring part body are respectively provided with the anchoring part supporting legs, and the bottom surfaces of the anchoring part supporting legs are flush with the binding surface; the lining brick is provided with a through long through groove along the height direction at the position corresponding to the anchor part supporting leg, and the anchor part supporting leg is exposed out of the bottom of the through groove. The lining brick has simple structure and convenient manufacture; the built lining and the kiln shell form a whole, so that the phenomena of lining brick breakage and falling caused by distortion and deformation in the rotation process of the kiln shell can be avoided, and the service life of the lining of the rotary kiln is prolonged.

Description

Rotary kiln lining brick and rotary kiln lining building method

Technical Field

The invention relates to the technical field of kiln lining building, in particular to a rotary kiln lining brick and a rotary kiln lining building method.

Background

Because the interior of the kiln is always in a high-temperature environment, the refractory material forming the kiln lining is easily damaged by the radiation of high-temperature flame, the scouring and corrosion of materials and high-temperature flue gas containing dust for a long time; therefore, it is required that the refractory brick used as the lining of the rotary kiln should have high wear resistance and soft spots. In addition, because the rotary kiln is a kiln which horizontally rotates, the lining in the kiln longitudinally deforms to a certain extent in the process of rotating along with the kiln shell, and the built lining bricks are easy to break due to stress distortion, the refractory bricks used as the lining of the rotary kiln are required to have higher compressive strength.

At present, the inner lining of rotary kiln is usually built by lining bricks made of refractory castable, the refractory casting cone material is an indefinite refractory material, and the refractory casting cone material is characterized in that the refractory casting cone material can be directly used after being formed and baked by a loose mixture matched with a proper anchoring piece without being calcined in advance. The lining bricks are supported by the anchor, so the design of the anchor is particularly important. The commonly used anchoring member is Y-shaped or V-shaped, but the adoption of the anchoring member needs to be firstly welded on the kiln shell of the rotary kiln and then cast on site to form a lining body. For the rotary kiln adopting the prefabricated lining brick, the anchoring piece needs to be embedded in the lining brick, and the anchoring piece is welded and fixed with the rotary kiln shell when the lining is built. And the welding during the building can not be realized by adopting the anchoring piece.

Disclosure of Invention

The invention provides a rotary kiln lining brick and a rotary kiln lining building method.A through groove is respectively arranged on two sides of the lining brick for welding an anchor part connecting part with a rotary kiln shell, and the rotary kiln lining brick is suitable for a rotary kiln adopting prefabricated lining bricks; the lining brick has simple structure and convenient manufacture; the built lining and the kiln shell form a whole, so that the phenomena of lining brick breakage and falling caused by distortion and deformation in the rotation process of the kiln shell can be avoided, and the service life of the lining of the rotary kiln is prolonged.

In order to achieve the purpose, the invention adopts the following technical scheme:

a rotary kiln lining brick comprises a lining brick and an anchoring piece embedded in the lining brick; the number of the anchoring pieces is at least 2 along the longitudinal direction of the lining brick; one surface of the lining brick, which is attached to the inner wall of the rotary kiln shell, is an attaching surface, and the surface facing the center of the rotary kiln is a working surface; the anchoring part comprises an anchoring part body and anchoring part supporting legs, the two ends of the anchoring part body are respectively provided with the anchoring part supporting legs, and the bottom surfaces of the anchoring part supporting legs are flush with the binding surface; the lining brick is provided with a through long through groove at the position corresponding to the anchor part supporting leg along the height direction, and the anchor part supporting leg is exposed at the bottom of the through groove.

The anchor assembly sets up 2 along the vertical of lining brick, and 2 anchor assemblies are close to the both ends of lining brick and set up.

The anchoring piece body is vertically arranged in the lining brick; the anchoring part body is in an inverted U shape, and the anchoring part supporting legs are arranged on the outer sides of two ends of the bottom of the anchoring part body.

The end of the anchor leg does not extend beyond the outer surface of the corresponding side of the lining brick.

The cross section of the lining brick is isosceles trapezoid, the width of the working surface is smaller than that of the binding surface, and the upper bottom and the lower bottom of the isosceles trapezoid are both arc-shaped and matched with the inner wall of the rotary kiln shell; the longitudinal section of the lining brick is rectangular; the through grooves are formed in 2 longitudinal side faces of the lining bricks.

The cross section of the through groove is rectangular or semicircular.

The lining brick is a baking-free prefabricated lining brick.

The anchor is made of carbon steel or stainless steel.

A method for building a rotary kiln lining comprises the following steps:

1) plastering fire clay on one side of the binding surface of the lining brick, sticking the lining brick to the inner side of the rotary kiln shell, and welding anchor support legs which are exposed at two sides of the lining brick and are bound with the rotary kiln shell on the rotary kiln shell through the through grooves to realize the relative fixation of the lining brick and the rotary kiln shell; when the lining brick B is built beside the fixed lining brick A, firstly plastering fire clay on the binding surface of the lining brick B and then sticking the lining brick B to the inner side of the rotary kiln shell, then welding and fixing the anchor part supporting leg close to one side of the lining brick A and the rotary kiln shell through the through groove, and then welding the anchor part supporting leg at the other side;

2) building a row of lining bricks longitudinally along the rotary kiln according to the method in the step 1), and then building another adjacent row of lining bricks circumferentially along the rotary kiln in a clockwise or anticlockwise direction; the rest is done in sequence until the lining bricks of the whole rotary kiln are completely built;

3) the through grooves on all the lining bricks are filled with casting materials or ramming materials, so that the top surfaces of the through grooves are flush with the working surfaces of the lining bricks.

Compared with the prior art, the invention has the beneficial effects that:

1) compared with the traditional lining brick of the rotary kiln, the lining brick can adopt the prefabricated lining brick, the anchoring piece is welded on the kiln shell during the building, the built lining and the kiln shell are integrated, the phenomenon that the lining brick is broken and falls off due to the fact that the lining is distorted and deformed in the process of rotating along with the kiln shell can be avoided, and the service life of the lining brick of the rotary kiln is prolonged.

2) The lining brick is a non-fired prefabricated lining brick, and has the advantages of no need of firing, short production period, high yield and low cost.

Drawings

Fig. 1 is a schematic perspective view of a lining brick of a rotary kiln according to the present invention.

Fig. 2 is a schematic view of a partial structure of a rotary kiln liner according to the present invention.

Fig. 3 is a view a-a in fig. 2.

In the figure: 1. lining brick 11, working face 12, binding face 13, anchoring piece body 14, anchoring piece supporting leg 15, through groove 2 and rotary kiln shell

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1-3, the lining brick of the rotary kiln comprises a lining brick 1 and an anchoring member embedded in the lining brick 1; the number of the anchoring pieces is at least 2 along the longitudinal direction of the lining brick 1; the surface of the lining brick 1, which is attached to the inner wall of the rotary kiln shell 2, is an attaching surface 12, and the surface facing the center of the rotary kiln is a working surface 11; the anchoring part consists of an anchoring part body 13 and anchoring part supporting legs 14, the two ends of the anchoring part body 13 are respectively provided with the anchoring part supporting legs 14, and the bottom surfaces of the anchoring part supporting legs 14 are flush with the binding surface 12; the lining brick 1 is provided with a through long through groove 15 along the height direction at the position corresponding to the anchor part supporting leg 13, and the anchor part supporting leg 14 is exposed at the bottom of the through groove 15.

The anchoring pieces are arranged in the longitudinal direction of the lining brick 1 in 2 numbers, and the 2 anchoring pieces are arranged close to the two ends of the lining brick 1.

The anchoring piece body 13 is vertically arranged in the lining brick 1; the anchoring part body 13 is in an inverted U shape, and the anchoring part legs 14 are arranged at the outer sides of two ends of the bottom of the anchoring part body 13.

The ends of the anchor legs 14 do not extend beyond the outer surface of the corresponding side of the lining tile 1.

The cross section of the lining brick 1 is isosceles trapezoid, the width of the working surface 11 is smaller than that of the binding surface 12, and the upper bottom and the lower bottom of the isosceles trapezoid are both arc-shaped and matched with the inner wall of the rotary kiln shell 2; the longitudinal section of the lining brick 1 is rectangular; the through grooves 15 are arranged on 2 longitudinal side surfaces of the lining brick 1.

The cross section of the through groove 15 is rectangular or semicircular.

The lining brick 1 is a baking-free prefabricated lining brick.

The anchor is made of carbon steel or stainless steel.

A method for building a rotary kiln lining comprises the following steps:

1) plastering fire clay on one side of the binding surface 12 of the lining brick 1, then sticking the lining brick to the inner side of the rotary kiln shell 2, and welding the anchor part supporting legs 14 which are exposed from the two sides of the lining brick 1 and are bound with the rotary kiln shell 2 on the rotary kiln shell 2 through the through grooves 15 to realize the relative fixation of the lining brick 1 and the rotary kiln shell 2; when the lining brick B is built beside the fixed lining brick A, firstly, plastering fire clay on the binding surface of the lining brick B and then sticking the lining brick B to the inner side of the rotary kiln shell 2, then welding and fixing the anchor part supporting leg 14 close to one side of the lining brick A and the rotary kiln shell 2 through the through groove 15, and then welding the anchor part supporting leg 14 at the other side;

2) building a row of lining bricks longitudinally along the rotary kiln according to the method in the step 1), and then building another adjacent row of lining bricks circumferentially along the rotary kiln in a clockwise or anticlockwise direction; the rest is done in sequence until the lining bricks of the whole rotary kiln are completely built;

3) the through grooves 15 on all the lining bricks 1 are filled with casting materials or ramming materials, so that the top surfaces of the through grooves are flush with the working surfaces 11 of the lining bricks 1.

According to the rotary kiln lining brick, the anchoring piece is embedded in the lining brick 1, through grooves 15 are formed in two long side edges of the lining brick attaching surface 12, anchoring piece supporting legs 14 are leaked out of the through grooves 15 on the two sides, and welding and fixing of the anchoring piece supporting legs 14 and the inner wall of the rotary kiln shell 2 are achieved by extending welding rods into the through grooves 15.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. A rotary kiln lining brick comprises a lining brick and an anchoring piece embedded in the lining brick; the anchor is characterized in that at least 2 anchors are arranged along the longitudinal direction of the lining brick; one surface of the lining brick, which is attached to the inner wall of the rotary kiln shell, is an attaching surface, and the surface facing the center of the rotary kiln is a working surface; the anchoring part comprises an anchoring part body and anchoring part supporting legs, the two ends of the anchoring part body are respectively provided with the anchoring part supporting legs, and the bottom surfaces of the anchoring part supporting legs are flush with the binding surface; the lining brick is provided with a through long through groove at the position corresponding to the anchor part supporting leg along the height direction, and the anchor part supporting leg is exposed at the bottom of the through groove.

2. The rotary kiln lining brick as claimed in claim 1, wherein the number of the anchoring members is 2 in the longitudinal direction of the lining brick, and the 2 anchoring members are provided near both ends of the lining brick.

3. The rotary kiln lining brick as claimed in claim 1, wherein the anchor member body is vertically disposed in the lining brick; the anchoring part body is in an inverted U shape, and the anchoring part supporting legs are arranged on the outer sides of two ends of the bottom of the anchoring part body.

4. The rotary kiln lining brick as claimed in claim 1, wherein the anchor leg has an end portion which does not extend beyond the outer surface of the corresponding side of the lining brick.

5. The lining brick of the rotary kiln as claimed in claim 1, wherein the lining brick has an isosceles trapezoid cross section, the width of the working surface is smaller than that of the binding surface, and the upper bottom and the lower bottom of the isosceles trapezoid are both arc-shaped to match with the inner wall of the rotary kiln shell; the longitudinal section of the lining brick is rectangular; the through grooves are formed in 2 longitudinal side faces of the lining bricks.

6. The rotary kiln lining brick as claimed in claim 1, wherein the cross section of the through groove is rectangular or semicircular.

7. The rotary kiln lining brick as claimed in claim 1, wherein the lining brick is a baking-free prefabricated lining brick.

8. The rotary kiln liner brick as claimed in claim 1, wherein the anchor member is made of carbon steel or stainless steel.

9. A rotary kiln lining masonry method based on the rotary kiln lining brick as claimed in claims 1-8, characterized by comprising the following steps:

1) plastering fire clay on one side of the binding surface of the lining brick, sticking the lining brick to the inner side of the rotary kiln shell, and welding anchor support legs which are exposed at two sides of the lining brick and are bound with the rotary kiln shell on the rotary kiln shell through the through grooves to realize the relative fixation of the lining brick and the rotary kiln shell; when the lining brick B is built beside the fixed lining brick A, firstly plastering fire clay on the binding surface of the lining brick B and then sticking the lining brick B to the inner side of the rotary kiln shell, then welding and fixing the anchor part supporting leg close to one side of the lining brick A and the rotary kiln shell through the through groove, and then welding the anchor part supporting leg at the other side;

2) building a row of lining bricks longitudinally along the rotary kiln according to the method in the step 1), and then building another adjacent row of lining bricks circumferentially along the rotary kiln in a clockwise or anticlockwise direction; the rest is done in sequence until the lining bricks of the whole rotary kiln are completely built;

3) the through grooves on all the lining bricks are filled with casting materials or ramming materials, so that the top surfaces of the through grooves are flush with the working surfaces of the lining bricks.

Images