CN210237674U

CN210237674U - Masonry structure of RH stove lower part groove

Info

Publication number: CN210237674U
Application number: CN201920004845.6U
Authority: CN
Inventors: Chunjie Zhang; 张春杰; Zhiyu Jiao; 焦智宇; Qingyang Cui; 崔庆阳; Fuqian Yang; 杨付乾; Linlin Wu; 吴林林; Shasha Lin; 林莎莎
Original assignee: Luoyang Lier Refractory Materials Co Ltd
Current assignee: Luoyang Lier Functional Materials Co.,Ltd.
Priority date: 2019-01-03
Filing date: 2019-01-03
Publication date: 2020-04-03
Anticipated expiration: 2029-01-03

Abstract

A masonry structure of a lower groove of an RH furnace relates to a masonry structure, which comprises an inner working layer brick, an outer working layer brick, a heat preservation layer brick and a heat insulation layer which are sequentially arranged from inside to outside, wherein the inner working layer brick comprises an inner working layer brick and an outer working layer brick which are arranged from inside to outside, a vertical seam is formed between the inner working layer brick and the outer working layer brick and penetrates through the whole lower groove, an adjusting brick is arranged at the bottom of the inner working layer brick or the outer working layer brick, and transverse seams of the inner working layer brick and the outer working layer brick which are adjacent to each other are arranged in a staggered manner; the utility model discloses when the RH stove moves life, only need demolish the incomplete brick of inboard working layer brick, outside working layer brick need not to change to reduced the consumption of resistant material, and formed the fissure of displacement between inboard working layer brick, the outside working layer brick, the expansion joint of traditional structure is replaced by the brick, has increased the stroke that the molten steel erodeed, has hindered the erosion and damage speed of molten steel, has reduced the possibility of wearing the steel.

Description

Masonry structure of RH stove lower part groove

Technical Field

The utility model relates to a masonry structure especially relates to a masonry structure in RH stove lower part groove.

Background

The known RH vacuum refining treatment technology is a multifunctional secondary refining method which has advanced process and can effectively improve the quality of molten steel. The refractory used by the lower tank of the RH refining furnace comprises an inner working layer brick, an outer working layer brick, a heat insulation layer brick and a heat insulation layer arranged from inside to outside; in the RH vacuum refining process, molten steel is pumped into a vacuum chamber under the action of vacuum pressure, the liquid level of the molten steel is positioned in the middle of a lower groove, the lower part of the lower groove is eroded by the molten steel and steel slag, the upper part of the lower groove is not directly contacted with the molten steel and is mainly splashed by the molten steel and heat radiation, therefore, the erosion speed of a working layer brick at the lower part of the lower groove is much higher than that of the upper part, and when the service life of the working layer brick at the lower part is up, the working layer brick needs to be replaced and rebuilt.

The structure of current RH stove lower part groove is mostly: a brick supporting plate is arranged in the middle of the lower groove, the lower groove is divided into an upper part and a lower part through a ring brick, and an expansion joint is reserved in the middle; the upper part of the lower groove is arranged above the brick supporting plate, the lower part of the lower groove is arranged below the brick supporting plate, and after the service life of the lower working layer bricks of the lower groove is up, all the working layer bricks at the lower part of the lower groove need to be removed and new bricks need to be built again; this approach has the following drawbacks: 1. because the thickness of the detached residual brick is about 100mm, the residual thickness is large, the refractory cost is increased, and the use efficiency of the RH furnace is also shortened; 2. because the working layer bricks on the upper part of the lower groove need to protrude out of the working layer bricks on the lower part of the lower groove, when workers remove the working layer bricks on the lower part of the lower groove, the risk that the bricks on the upper part of the lower groove fall off exists; 3. the bricks of the lower part of the lower groove on the new masonry protrude a little more than the bricks of the working layer on the upper part of the lower groove, and are easily eroded and damaged when in use, thereby causing the waste of refractory materials; 4. because the expansion joint is reserved in the middle of the lower groove, the steel-penetrating risk coefficient is improved.

Disclosure of Invention

In order to overcome the defects in the background technology, the utility model discloses a masonry structure of a lower groove of an RH furnace.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a masonry structure of RH stove lower part groove, include from interior to the outside inside working layer brick that sets gradually, outside working layer brick, heat preservation brick and insulating layer, inside working layer brick includes from interior to the outside inboard working layer brick and the outside working layer brick that set up, form a perps between inboard working layer brick and the outside working layer brick and run through whole lower part groove, the bottom of inboard working layer brick or outside working layer brick is equipped with an adjustment brick, the crisscross setting of the perps of inside and outside adjacent inboard working layer brick and outside working layer brick.

The masonry structure of the lower groove of the RH furnace has the advantages that the thicknesses of the upper bricks and the lower bricks of the inner side working layer bricks are consistent.

In the masonry structure of the RH furnace lower groove, the heat-insulating layer brick is arranged outside the outer side working layer brick, and the middle parts of the heat-insulating layer brick and the outer side working layer brick are provided with brick supporting plates.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

1. the masonry structure of the lower groove of the RH furnace is provided with the inner side working layer bricks and the outer side working layer bricks, when the RH furnace runs to the service life, only the residual bricks of the inner side working layer bricks are needed to be removed, and the outer side working layer bricks are not needed to be replaced, thereby reducing the consumption of refractory materials and improving the running efficiency of the lower groove; because the thickness of the inner side working layer brick is smaller than that of the inner side working layer brick with the traditional structure, the inner side working layer brick is convenient to remove, the labor intensity of workers is reduced, and the safety factor of brick removing work is improved.

2. The masonry structure of the lower groove of the RH furnace has the advantages that the upper and lower thicknesses of the bricks of the inner working layer are consistent, the staggered structure can not occur, the erosion degree of the lower groove is kept consistent, and the unnecessary refractory material consumption is reduced; staggered joints are formed between the inner side working layer bricks and the outer side working layer bricks, expansion joints of the traditional structure are replaced by the bricks, the stroke of molten steel scouring is increased, the corrosion loss rate of the molten steel is hindered, and the possibility of steel penetration is reduced.

Drawings

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

in the figure: 1. inner side working layer bricks; 2. an outer working layer brick; 3. an outer working layer brick; 4. adjusting the brick; 5. insulating layer bricks; 6. an insulating layer.

Detailed Description

The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.

Combine the masonry structure of RH stove lower part groove of attached figure 1, include the inside working layer brick that sets gradually from inside to outside, outside working layer brick 3, heat preservation brick 5 and insulating layer 6, inside working layer brick includes from inside to outside inboard working layer brick 1 and the outside working layer brick 2 that sets up, form a perps between inboard working layer brick 1 and the outside working layer brick 2 and run through whole lower part groove, the bottom of inboard working layer brick 1 or outside working layer brick 2 is equipped with an adjustment brick 4, inside and outside adjacent inboard working layer brick 1 sets up with the transversal joint of outside working layer brick 2 is crisscross.

The masonry structure of the lower groove of the RH furnace has the advantages that the thicknesses of the upper brick and the lower brick of the inner side working layer brick 1 are consistent.

In the masonry structure of the RH furnace lower groove, the heat-insulating layer brick 5 is arranged outside the outer working layer brick 2, and the middle parts of the heat-insulating layer brick 5 and the outer working layer brick 2 are provided with brick supporting plates.

The masonry structure of the RH furnace lower groove is implemented by sequentially arranging an inner working layer brick 1, an outer working layer brick 2, an outer working layer brick 3, a heat insulation layer brick 5 and a heat insulation layer 6 from inside to outside during masonry, wherein an adjusting brick 4 can be built at the bottommost layer of the inner working layer brick 1 or the outer working layer brick 2, as shown in the attached drawing 1, the radial thickness of the inner working layer brick 1 is generally designed to be 170 and 220mm, and the radial thickness of the outer working layer brick 2 is generally designed to be 80-100 mm; an adjusting rotor 4 is built at the bottommost layer of the outer working layer bricks 2, so that staggered joint building is formed between the inner working layer bricks 1 and the outer working layer bricks 2, expansion joints of the traditional structure are replaced by bricks, the stroke of molten steel scouring is increased, the erosion rate of molten steel is hindered, and the possibility of steel penetration is reduced; a vertical seam is formed between the inner side working layer bricks 1 and the outer side working layer bricks 2 and penetrates through the whole lower groove, so that the residual bricks of the inner side working layer bricks 1 can be conveniently and integrally removed, and the purposes of saving refractory materials and improving the running efficiency of the RH lower groove are achieved.

The part of the utility model not detailed is prior art.

The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.

Claims

1. The utility model provides a masonry structure of RH stove lower part groove, includes inside working layer brick, outside working layer brick, heat preservation brick and the insulating layer that sets gradually from interior to exterior, characterized by: the inner working layer brick comprises an inner working layer brick and an outer working layer brick which are arranged from inside to outside, a vertical seam is formed between the inner working layer brick and the outer working layer brick and penetrates through the whole lower groove, an adjusting brick is arranged at the bottom of the inner working layer brick or the outer working layer brick, and transverse seams of the inner working layer brick and the outer working layer brick which are adjacent to each other are arranged in a staggered mode.

2. The masonry structure for the lower tank of the RH furnace according to claim 1, wherein: the thickness of the upper brick and the lower brick of the inner side working layer brick is consistent.

3. The masonry structure for the lower tank of the RH furnace according to claim 1, wherein: the heat-insulating layer brick is arranged outside the outer working layer brick, and a brick supporting plate is arranged in the middle of the heat-insulating layer brick and the outer working layer brick.