CN217715871U

CN217715871U - Refractory lining structure of rotary kiln

Info

Publication number: CN217715871U
Application number: CN202221697596.1U
Authority: CN
Inventors: 杨引文; 胡荣芳; 彭杰斌
Original assignee: Wuhan Jingding Technology Co ltd
Current assignee: Wuhan Jingding Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-01
Anticipated expiration: 2032-06-30

Abstract

The utility model provides a fire-resistant lining structure of rotary kiln. The lining structure is formed by arranging a row of prefabricated brick structures and a row of pouring structures in a staggered mode, the prefabricated brick masonry structure is formed by adopting prefabricated bricks to be directly welded on the inner wall of a rotary kiln steel shell, and the pouring structure is formed by erecting a template and pouring refractory pouring materials after metal anchoring pieces are welded on the inner wall of the rotary kiln steel shell; the prefabricated brick includes inside steel skeleton and the high temperature resistant material layer of parcel outside the steel skeleton, steel skeleton bottom both sides are stretched out high temperature resistant material layer and are formed many welding stabilizer blades to weld at rotary kiln steel casing inner wall through many welding stabilizer blades. The utility model discloses can realize the quick replacement of inside lining, reduce the lining body and drop into the baking time of use, and increased steadiness and reliability that prefabricated brick welded on the box hat.

Description

Refractory lining structure of rotary kiln

Technical Field

The utility model belongs to metallurgical industry stove production field, in particular to refractory lining structure of rotary kiln.

Background

The lining material is introduced into the rotary kiln at home, and then the lining material is developed into an integral casting form with a light heat-insulating layer from the original full-heavy material casting. Due to the difference of the pouring construction and the solidification time of each equal-section lining strip, a through seam is formed among the equal-section lining strips, so that the integrity of the refractory lining of the rotary kiln is poor; in addition, in the long-term production process of the rotary kiln, the refractory lining is in a high-temperature state for a long time, and finally, the refractory lining is easy to crack or even fall off due to the volume change of the refractory lining caused by thermal expansion, so that the service life of the rotary kiln is influenced. Meanwhile, the on-site integral pouring construction is difficult, the labor intensity is high, the cost for erecting the template is high, and the overhaul and construction of the rotary kiln refractory lining are troublesome.

Disclosure of Invention

The utility model provides a be used for refractory lining structure of rotary kiln according to prior art's not enough, this inner lining structure adopt prefabricated brick and pour the material mode in turn, and its prefabricated brick can the lug weld on the rotary kiln steel casing, makes things convenient for the quick replacement of inside lining, and the stability of prefabricated brick is high, and intensity is reliable.

In order to achieve the technical effect, the utility model provides a rotary kiln fireproof lining structure, the lining structure is formed by a row of precast brick masonry structures and a row of pouring structures which are arranged in a staggered way, the precast brick masonry structures are formed by adopting precast bricks to be directly welded on the inner wall of a rotary kiln steel shell, and the pouring structures are formed by erecting templates and pouring fireproof pouring materials after welding metal anchoring parts on the inner wall of the rotary kiln steel shell; the prefabricated brick includes inside steel skeleton and the high temperature resistant material layer of parcel outside the steel skeleton, steel skeleton bottom both sides are stretched out high temperature resistant material layer and are formed many welding stabilizer blades to weld at rotary kiln steel casing inner wall through many welding stabilizer blades.

The utility model discloses further technical scheme: the prefabricated brick is a six-leg prefabricated brick with a narrow top and a wide bottom, a steel framework of the prefabricated brick comprises three U-shaped steel supports and a plurality of V-shaped steel supports, the three U-shaped steel supports are arranged in a high-temperature resistant material layer in an inverted mode at equal intervals, the sealing ends of the three U-shaped steel supports are connected into a whole through two parallel round steel bars, two opening ends of each U-shaped steel support are provided with transverse extension arms, the transverse extension arms on two sides respectively extend outwards to form six welding support legs, and the bottom surfaces of the six welding support legs and the bottom surface of the high-temperature resistant material layer are on the same plane; and a plurality of V-shaped steel brackets are dispersedly fixed at the sealing ends of the three U-shaped steel brackets.

The utility model discloses better technical scheme: and the pouring structure is formed by pouring an aluminum-chromium-silicon carbide wear-resistant pouring material between two adjacent rows of prefabricated brick masonry structures after the prefabricated brick masonry structures are installed.

The utility model discloses better technical scheme: the high-temperature resistant material layer of the prefabricated brick is an aluminum-chromium-silicon carbide material.

The utility model discloses better technical scheme: the top surface and the bottom surface of the prefabricated brick are arc surfaces matched with the radian of the inner wall of the steel shell of the rotary kiln.

The utility model discloses better technical scheme: v shaped steel support homodisperse is in prefabricated brick, and U shaped steel support hangs upside down in the V type region of V shaped steel support to with V shaped steel scaffold weldment.

The utility model discloses better technical scheme: the outer surface of each welding support leg is provided with a nano aluminum oxide metal anticorrosive coating.

The utility model has the advantages that:

(1) The utility model adopts the structure of a row of precast bricks (pre-baking) and a row of casting materials, which can realize the quick replacement of the lining, and the precast bricks are pre-baked before being installed, the initial strength of the precast bricks is far greater than that of the casting material lining body which is not baked, therefore, the baking time of the lining body in use can be reduced;

(2) The utility model discloses a prefabricated brick adopts heat-resisting stainless steel as the skeleton of brickmaking, sets up six feet and welds on the rotary kiln steel casing, has increased steadiness and reliability that prefabricated brick welded on the steel casing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a partially enlarged schematic view of the present invention;

FIG. 3 is a schematic view of the front structure of the prefabricated brick of the present invention;

FIG. 4 is a schematic side view of the prefabricated brick of the present invention;

fig. 5 is a schematic view of the bent surface structure of the prefabricated brick of the present invention;

fig. 6 is the structure schematic diagram of the steel skeleton inside the middle prefabricated brick of the utility model.

In the figure: 1-precast brick masonry structure, 2-pouring structure, 3-rotary kiln steel shell, 4-metal anchoring piece, 5-steel skeleton, 500-U shaped steel support, 501-V shaped steel support, 502-round steel, 6-high temperature resistant material layer, 7-welding stabilizer blade.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 6 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

The embodiment provides a refractory lining structure of a rotary kiln, as shown in fig. 1 and fig. 2, the lining structure is formed by arranging a row of prefabricated brick masonry structures 1 and a row of pouring structures 2 in a staggered mode, the prefabricated brick masonry structures 1 are formed by adopting prefabricated bricks to be directly welded on the inner wall of a rotary kiln steel shell 3, and the pouring structures 2 are formed by erecting templates for pouring aluminum-chromium-silicon carbide wear-resistant castable after metal anchoring pieces 4 are welded on the inner wall of the rotary kiln steel shell 3 between two adjacent rows of the prefabricated brick masonry structures 1 after the prefabricated brick masonry structures 1 are installed.

The prefabricated brick in the embodiment is a six-leg prefabricated brick with a narrow top and a wide bottom as shown in fig. 3 to 6, the top surface and the bottom surface of the prefabricated brick are arc surfaces matched with the radian of the inner wall of a steel shell 3 of a rotary kiln, the prefabricated brick comprises an inner steel framework 5 and a high-temperature-resistant material layer 6 wrapped outside the steel framework 5, and the high-temperature-resistant material layer 6 of the prefabricated brick is an aluminum-chromium-silicon carbide material. Its steel skeleton 5 of prefabricated brick includes three U shaped steel support 500 and five V shaped steel supports 501, the firm 500 equidistance of support of three U type is inverted in refractory material layer 6, and the just support 500's of three U type seal end is even as an organic whole through two parallel round steel 502, every U shaped steel support 500's both ends open end is equipped with horizontal extension arm, and the horizontal extension arm of both sides outwards stretches out refractory material layer 6 respectively and forms six

welding stabilizer blades

7, 7 surfaces of every welding stabilizer blade are equipped with nanometer oxidation aluminium metal anticorrosive coating, and the bottom surface of six welding stabilizer blades 7 and refractory material layer 6's bottom surface are on the coplanar, and weld at 3 inner walls of rotary kiln steel casing through many welding stabilizer blades 7. Five V shaped steel supports 501 homodisperse in prefabricated brick, and U shaped steel support 500 hangs upside down in V type region of V shaped steel support 501 to with V shaped steel support 501 welding.

The radian of the top surface arc surface of the six-leg prefabricated brick in the embodiment is 5 degrees, the width of the top surface is 172mm, the width of the bottom surface is 196mm, the thickness of the brick body is 280mm, the length of the brick body is 400mm, three U-shaped rigid supports 500 are distributed along the length direction, the distance is 120mm, the length of each welding support leg 7 is about 50mm, and the welding support legs are bent upwards by about 10 degrees to form an arc shape which can be tightly attached to the inner wall of the rotary kiln steel shell 3. In the embodiment, 36 six-pin prefabricated bricks are arranged in one circle of the rotary kiln, the prefabricated bricks are aluminum chromium silicon carbide prefabricated bricks GM-YB-70CrSiC, 72 prefabricated bricks are arranged in one circle of the metal anchoring parts, and the casting material is a reinforced aluminum chromium silicon carbide wear-resistant casting material with the product model GM-HJ-70 CrSiC. The steel skeleton material in the prefabricated brick adopts 310S, adopts the welding mode to connect, and its welding material selects A402 for use.

The utility model discloses when the construction is overhauld to the refractory inside lining of rotary kiln, adopt the structural style of one row of castables of one row of prefabricated brick (baking in advance), can realize the quick replacement of inside lining, and carry out the prebaking before the prefabricated brick installation, its initial strength is far more than the castables lining body that does not pass through the stoving, consequently, can reduce the lining body and drop into the baking time of use. Its prefabricated brick adopts 6 feet to weld on the rotary kiln steel casing, has increased the steadiness and the reliability that prefabricated brick welded on the steel casing.

The above description is only an embodiment of the present invention, and the description thereof is specific and detailed, but not intended to limit the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A refractory lining structure of a rotary kiln is characterized in that: the lining structure is formed by arranging a row of prefabricated brick masonry structures (1) and a row of pouring structures (2) in a staggered mode, the prefabricated brick masonry structures (1) are directly welded to the inner wall of a rotary kiln steel shell (3) through prefabricated bricks, and the pouring structures (2) are formed by erecting templates and pouring refractory pouring materials after metal anchoring pieces (4) are welded to the inner wall of the rotary kiln steel shell (3); the prefabricated brick includes inside steel skeleton (5) and wraps up high temperature resistant material layer (6) outside steel skeleton (5), steel skeleton (5) bottom both sides are stretched out high temperature resistant material layer (6) and are formed many welding stabilizer blade (7) to weld at rotary kiln steel casing (3) inner wall through many welding stabilizer blade (7).

2. The rotary kiln refractory lining structure as claimed in claim 1, wherein: the prefabricated brick is a six-leg prefabricated brick with a narrow top and a wide bottom, a steel framework (5) of the prefabricated brick comprises three U-shaped steel supports (500) and a plurality of V-shaped steel supports (501), the three U-shaped steel supports (500) are arranged in a high-temperature-resistant material layer (6) in an inverted mode at equal intervals, the sealing ends of the three U-shaped steel supports (500) are connected into a whole through two parallel round steel (502), two opening ends of each U-shaped steel support (500) are provided with transverse extension arms, the transverse extension arms on the two sides respectively extend outwards out of the high-temperature-resistant material layer (6) to form six welding support legs (7), and the bottom surfaces of the six welding support legs (7) and the bottom surface of the high-temperature-resistant material layer (6) are on the same plane; a plurality of V-shaped steel brackets (501) are dispersedly fixed at the sealing ends of the three U-shaped steel brackets (500).

3. The refractory lining structure of a rotary kiln as defined in claim 1 or 2, wherein: the pouring structure (2) is formed by pouring an aluminum-chromium-silicon carbide wear-resistant pouring material between two adjacent rows of prefabricated brick masonry structures (1) after the prefabricated brick masonry structures (1) are installed.

4. The refractory lining structure of a rotary kiln as defined in claim 1 or 2, wherein: the high-temperature resistant material layer (6) of the prefabricated brick is an aluminum chromium silicon carbide material.

5. The refractory lining structure of a rotary kiln as defined in claim 2, wherein: the top surface and the bottom surface of the prefabricated brick are arc surfaces matched with the radian of the inner wall of the rotary kiln steel shell (3).

6. The refractory lining structure of a rotary kiln as defined in claim 2, wherein: v shaped steel support (501) homodisperse is in prefabricated brick, and U shaped steel support (500) hang upside down in the V type region of V shaped steel support (501) to with V shaped steel support (501) welding.

7. The refractory lining structure of a rotary kiln as defined in claim 2, wherein: the outer surface of each welding support leg (7) is provided with a nano aluminum oxide metal anticorrosive coating.