CN212954895U

CN212954895U - High-density refractory silica brick

Info

Publication number: CN212954895U
Application number: CN202020771952.4U
Authority: CN
Inventors: 冯昶焜; 冯文欣; 冯金满; 钱学涛; 崔亚蕾; 钱子元; 苏培东
Original assignee: Zhengzhou Changlian Refractories Co ltd
Current assignee: Xu Shengwen
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-04-13
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a high density refractory silica brick, its characterized in that: layer shell and arrange the inner core in the layer shell in, be equipped with first holding between layer shell and the inner core and burn the net, layer shell inner wall is equipped with U type groove, hold burn the net be equipped with the first arch of U type groove complex, layer shell is its appearance of high density silica brick layer and is the cuboid, be equipped with regular polyhedron cavity in the layer shell, U type groove is located on the symmetry plane of regular polyhedron cavity. The utility model discloses its comprehensive height and mechanical strength are difficult for being destroyed greatly, low in manufacturing cost.

Description

High-density refractory silica brick

Technical Field

The utility model relates to a resistant firebrick, concretely relates to high density refractory silica brick.

Background

The silica brick is a refractory product prepared by firing silica, silica sand, calcium powder, iron phosphorus powder and other raw materials. The method is mainly used for high-temperature parts of kilns such as a blast furnace hot blast stove, a coke oven, a carbon calciner, a glass kiln and the like of iron and steel companies. Various performance indexes of the high-density silica brick are improved, but the obtained high-density silica brick has higher requirements on the granularity and the quality of raw materials, and the preparation cost is greatly increased. The inventors have long studied and practiced the need for improvement of the prior art to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a high-density fireproof silica brick with low manufacturing cost, high working surface compactness and excellent comprehensive performance. The method is realized by the following scheme:

a high density fire-resistant silica brick, layer shell and the inner core of arranging layer shell in, be equipped with first holding between layer shell and the inner core and burn the net, layer shell inner wall is equipped with U type groove, hold burn the net be equipped with the first arch of U type groove complex, layer shell is its appearance on high density silica brick layer and is the cuboid, be equipped with regular polyhedron cavity in the layer shell, U type groove is located on regular polyhedron cavity's the plane of symmetry.

In a preferred scheme, transition arcs are arranged at edges of the cavities of the regular polyhedrons.

Preferably, the inner core is one of a refractory pouring layer or a formed refractory material.

Preferably, when the inner core is a formed refractory material, a transition layer is further poured between the layer shell and the inner core.

In a preferable scheme, a shrinkage hole is reserved in an inner core of the formed refractory material.

The utility model has the advantages that: layer shell adopts the granularity thin, and the high-quality raw materials suppression of raw materials forms, and its shell is main working face when building into the kiln wall, and its comprehensive height and mechanical strength are difficult for destroyed greatly, and its inner core has adopted ordinary granularity, general raw materials, as filling and support. Compared with the traditional refractory silica brick, the refractory silica brick integrally reduces the manufacturing difficulty of granularity, saves the cost of raw materials, improves the cost performance on the premise of meeting the use requirement and has good economical efficiency. The inner core of the utility model is arranged inside the burning bearing net, and the burning bearing net has the effect of a hoop on the inner core, thereby effectively preventing the low-quality inner core from cracking and improving the mechanical property; and simultaneously, adopted the pouring material to connect both between layer shell and the inner core to connect through holding burning the net and make both combine more closely to prevent the spalling phenomenon, guaranteed the utility model discloses an wholeness ability.

Drawings

FIG. 1 is a schematic view of a first embodiment;

FIG. 2 is a schematic structural diagram of the second embodiment.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in the figure, a high density fire-resistant silica brick, layer shell 1 and arrange inner core 2 in layer shell 1 in, be equipped with between layer shell 1 and the inner core 2 and hold burning net 3, layer shell 1 inner wall is equipped with U type groove 4, hold burning net 3 be equipped with U type groove 4 complex first arch, layer shell 1 is the cuboid for its appearance of high density silica brick layer, be equipped with regular polyhedron cavity in layer shell 1, U type groove 4 is located on the symmetry plane of regular polyhedron cavity. Preferably, the raw material of the shell 1 may be the raw material of the high-density silica brick disclosed in the patent publication No. CN109251048A and having the patent name of a high-density silica brick and the preparation method thereof, and the raw material of the inner core 2 is the preferred low-creep anti-crack silica brick disclosed in the patent publication No. CN106946556B and having the patent name of a low-creep anti-crack silica brick disclosed in the preparation method thereof, which is the prior art and is not described herein again. The inner wall of the layer shell 1 is provided with a U-shaped groove 4, and the burning bearing net 3 is provided with a first bulge matched with the U-shaped groove 4. When the inner core 2 is manufactured, the U-shaped groove 4 and the first bulges are matched, so that the burning bearing net 3 can be firmly fixed in the laminated shell 1, the random rotation of the burning bearing net in the forming process is prevented, and the inner core 2 and the laminated shell 1 are bonded to enable the combination of the inner core and the laminated shell to be more compact. The density of the layer shell 1 is 2-3 times of that of the inner core 2, such as: when the density of the layer shell 1 is 3 times of that of the inner core 2, the whole service life of the brick is more than 3 years, and the brick is used for 12 hours every day.

Furthermore, transition circular arcs 5 are arranged at edges of the cavities of the regular polyhedrons. The arc 5 reduces stress concentration at the position, effectively avoids corner combination and prevents the joint surface at the corner from generating crack imagination.

Further, the inner core 2 is a fireproof pouring layer 8 and can also be made of a formed fireproof material, when the inner core 2 is made of the formed fireproof material, a transition layer 7 is further poured between the layer shell 1 and the inner core 2, and the poured transition layer 7 ensures that the formed fireproof material is tightly connected with the layer shell 1, so that the phenomenon of similar spalling between the formed fireproof material and the layer shell is prevented.

In this embodiment, on the basis of the above scheme, the inner core 2 of the formed refractory material is provided with a shrinkage hole 6 in advance, the refractory wool is arranged in the shrinkage hole 6 to prevent the inner core from air leakage, and the shrinkage hole 6 can ensure a proper amount of expansion with heat and contraction with cold of the inner core 2 to prevent the inner core from cracking due to non-dispersive internal stress.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A high-density refractory silica brick is characterized in that: layer shell and arrange the inner core in the layer shell in, be equipped with first holding between layer shell and the inner core and burn the net, layer shell inner wall is equipped with U type groove, hold burn the net be equipped with the first arch of U type groove complex, layer shell is its appearance of high density silica brick layer and is the cuboid, be equipped with regular polyhedron cavity in the layer shell, U type groove is located on the symmetry plane of regular polyhedron cavity.

2. The high-density refractory silica brick according to claim 1, wherein: and transition arcs are arranged at edges of the regular polyhedron cavity.

3. The high-density refractory silica brick according to claim 1, wherein: the inner core is one of a fireproof pouring layer or a formed fireproof material.

4. The high-density refractory silica brick according to claim 1, wherein: when the inner core is made of the formed refractory material, a transition layer is further poured between the layer shell and the inner core.

5. The high-density refractory silica brick according to claim 4, wherein: and a shrinkage hole is reserved in the inner core of the formed refractory material.