CN201381342Y

CN201381342Y - Improve RH stove lower groove

Info

Publication number: CN201381342Y
Application number: CN200920069089U
Authority: CN
Inventors: 应未君
Original assignee: Yixing Xinwei Leeshing Refractory Materials Co Ltd
Current assignee: Yixing Xinwei Leeshing Refractory Materials Co Ltd
Priority date: 2009-03-19
Filing date: 2009-03-19
Publication date: 2010-01-13
Anticipated expiration: 2019-03-19

Abstract

The utility model relates to the RH stove technical field, in particular to an improved RH stove lower groove. The lower groove comprises a working brick layer (5), a secondary working brick layer (4), a heat reserving brick layer (3), a heat insulating plate (2) and a steel shell (1) and is characterized in that the middle part of the lower groove is divided into an upper area and a lower area by a brick supporting plate (6). Compared with the prior art, the upper area of the lower groove can be sprayed only by molten steel and can be consumed slightly, but the lower area can be consumed heavily due to the corrosion and the washing of molten steel and slag, therefore, only the lower area can be replaced, furthermore, the material cost and the labor cost are saved, the maintenance period is shortened, and the material cost on each stove can be saved greatly every year.

Description

Improved RH stove lower channel

[technical field]

The utility model relates to RH stove technical field, relates in particular to a kind of improved RH stove lower channel.

[background technology]

The RH stove is the external refining equipment in the steel smelting procedure, by the liquid steel refining of molten steel circulation realization based on vacuum outgas, lower channel is positioned at RH stove bottom, be the contact molten steel significant points, to bear simultaneously molten steel, slag erosion, wash away, spray cold and hot variation shallow and that batch operation causes.

The design of existing RH stove lower channel is: after material uses the life-span, and disposable changing, asynchronous with the life-span of actual product, so cost is than higher, unfavorable saving cost.

[summary of the invention]

The purpose of this utility model is to overcome the deficiencies in the prior art, and original lower channel is divided into two districts up and down.

For achieving the above object, the utility model proposes a kind of improved RH stove lower channel, comprise working brick layer/task brick layer, insulating brick-layer, heat-insulating shield, box hat, it is characterized in that: the lower channel middle part adopts the brick plate branch to be set as two districts up and down.

Groove is established at the middle part of task brick layer inboard, and the brick plate edge embeds the bottom in the groove, the whole embedding groove of supporting plate brick internal upper part.

At an end of supporting plate brick middle part outer ledge embedding supporting plate, the other end of supporting plate crosses insulating brick-layer and is fixed in the box hat inwall.

The utility model is compared with prior art, the last district of lower channel only is subjected to the molten steel splash, consume slight, inferior segment then in the erosion of molten steel, slag and wash away consume down serious, therefore only needing to change inferior segment gets final product, not only save material and labour cost, contracting simultaneously is in the wrong the cycle of repairing, and only each stove of materials cost can be saved expenses up to a million every year.

[description of drawings]

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the circulating pipe structural representation of original technology.

Referring to accompanying drawing, 1 is box hat; 2 is heat-insulating shield; 3 is insulating brick-layer; 4 is task brick layer; 5 is the working brick layer; 6 is brick plate; 7 is the supporting plate brick; 8 is supporting plate.

[specific embodiment]

The lower channel middle part adopts brick plate to be set as two districts up and down in 6 minutes, groove is established at the middle part of task brick layer 4, brick plate 6 edges embed the bottom in the groove, the whole embedding supporting plate of groove internal upper part brick 7, embed an end of supporting plate 8 at edge, supporting plate brick 7 middle part, the other end of supporting plate 8 crosses insulating brick-layer 3 and is fixed in box hat 1 inwall, to play the reinforcement effect to supporting plate brick 7.

Lower channel forms two districts up and down like this, wherein goes up the district for thermal radiation field and molten steel splash zone, only is subjected to the molten steel splash, consumes slight; Inferior segment then is the molten steel race way, and in the erosion of molten steel, slag with wash away and consume seriously down, its building method is constant when changing inferior segment, begins to build by laying bricks or stones from bottom to top to put in place from furnace bottom, can't have influence on the district.

Claims

1, a kind of improved RH stove lower channel comprises working brick layer (5), task brick layer (4), insulating brick-layer (3), heat-insulating shield (2), box hat (1), it is characterized in that: the lower channel middle part is adopted brick plate (6) to divide and is set as two districts up and down.

2, a kind of improved RH stove lower channel as claimed in claim 1 is characterized in that: groove is established at the inboard middle part of task brick layer (4), and brick plate (6) edge embeds the bottom in the groove, the whole embedding groove of supporting plate brick (7) internal upper part.

3, a kind of improved RH stove lower channel as claimed in claim 1 is characterized in that: at an end of supporting plate brick (7) middle part outer ledge embedding supporting plate (8), the other end of supporting plate (8) crosses insulating brick-layer (3) and is fixed in box hat (1) inwall.