CN202853348U

CN202853348U - Kiln head-kiln tail lining-resistant masonry structure of pelletizing rotary kiln

Info

Publication number: CN202853348U
Application number: CN 201220406843
Authority: CN
Inventors: 何齐书; 郭勤宇; 晋华; 杨如发
Original assignee: Wuhu Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Wuhu Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2012-08-16
Filing date: 2012-08-16
Publication date: 2013-04-03
Anticipated expiration: 2022-08-16

Abstract

The utility model discloses a kiln head-kiln tail lining-resistant masonry structure of a pelletizing rotary kiln. The kiln head-kiln tail lining-resistant masonry structure of the pelletizing rotary kiln comprises a back iron (1), a kiln head-kiln tail steel structure (2), anchoring hooks (3) and phosphate mullite castable materials (4). A plurality of suspending bricks (5) are arranged in the phosphate mullite castable materials (4), the shape of the suspending bricks (5) is corrugate. According to the kiln head-kiln tail lining-resistant masonry structure of the pelletizing rotary kiln, the suspending bricks are baked and molded by high alumina refractory, using temperature of the suspending bricks made by the high alumina refractory can reach 1450 DEG C, the suspending bricks are not prone to deformation and cracking when used for a long time under high temperature, performance of castable material support frame is improved, and service life of castable materials of the kiln head and the kiln tail can be prolonged. The kiln head-kiln tail lining-resistant masonry structure of the pelletizing rotary kiln has the advantages of reducing refractory cost and working intensity of a worker, and saving a large amount of human and material resources.

Description

A kind of applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-the lining cutting

Technical field

The utility model belongs to the technical field of metallurgical industry production equipment, relates to the structure of applied to pelletizing rotary kiln, and more particularly, the utility model relates to a kind of applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-the lining cutting.

Background technology

Applied to pelletizing rotary kiln is the steel construction cylindrical shell that is supported on 4 groups of rigidity support rollers, can rotates, and builds refractory material in the cylindrical shell by laying bricks or stones, is that refractory brick and castable stagger and build by laying bricks or stones in the middle of the cylindrical shell.

Shown in Figure 1 as in this Figure of description, kiln hood, kiln tail are to collude 3 as support frame with anchoring, and it is weldingly fixed on the kiln head and tail steel construction 2, fill corundum castable therebetween, namely the phosphate mullite pouring material 4.Be the kiln hood structure shown in the figure, kiln hood, kiln stern construction are identical, take kiln hood as example.

The refractory lining of kiln hood, kiln tail is under 1000 ℃ of left and right sides conditions of high temperature for a long time works, and is subject to simultaneously washing away of red ball, so the protection of kiln hood, kiln tail lining body can only adopt castable refractory to build, and requires at high temperature withstand voltage, wear-resisting.Require castable should have certain heat-insulating property, enough intensity and hardness are at high temperature arranged again.It is phosphate corundum-mullite castable that kiln hood, kiln tail castable are used, this castable has enough intensity and hardness, simultaneously corresponding thermal conductivity factor is larger, cause the anchor rib temperature drift, the generation austenite matrix changes, and metallographic structure has the hot-spot phenomenon, so that the anchor rib mechanical performance declines to a great extent, finally concentrate the face fracture at stress, thereby cause castable to come off.

The life cycle of kiln hood castable is about 3 months, and kiln tail castable life cycle is about 4 months.At least will change castable 3 times to kiln hood, kiln tail every year, wastes a large amount of manpower and materials, because it is longer to change the time of castable maintenance, output can't hit the target.

The utility model content

The utility model provides a kind of applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-the lining cutting, its objective is to prolong kiln hood, kiln tail castable service life.

To achieve these goals, the technical scheme taked of the utility model is:

The applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-lining cutting the provided by the utility model, comprise break iron, kiln head and tail steel construction, anchoring hook and phosphate mullite pouring material, in described phosphate mullite pouring material, a plurality of hanger bricks are set, the profile of described hanger brick is corrugated.

The material of described hanger brick adopts aluminous refractory.

The utility model adopts technique scheme, because hanger brick forms by a firing with aluminous refractory, and the hanger brick serviceability temperature that the anti-material of high alumina is made can reach 1450 ℃, can under higher temperature, use for a long time and can not be out of shape, ftracture, thereby improved the performance of castable support frame, prolonged the service life of kiln hood, kiln tail castable; Reduce anti-material expense, reduce worker's labour intensity, saved a large amount of man power and materials.Through measuring and calculating, annual every equipment is saved the castable expense more than more than 50 ten thousand yuan, and the annual minimizing repair time has produced considerable economic benefit about 7 days.

Description of drawings

The below is briefly described the expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure:

Fig. 1 is the structural representation of the described prior art of this specification background technology part;

Fig. 2 is structural representation of the present utility model.

Be labeled as among the figure:

1, break iron, 2, the kiln head and tail steel construction, 3, anchoring hook, 4, the phosphate mullite pouring material, 5, suspender member.

The specific embodiment

The below contrasts accompanying drawing, by the description to embodiment, the specific embodiment of the present utility model is described in further detail, and to help those skilled in the art inventive concept of the present utility model, technical scheme is had more complete, accurate and deep understanding.

The structure of the present utility model that Fig. 2 is expressed for a kind of applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-the lining cutting, comprises break iron 1, kiln head and tail steel construction 2, anchoring hook 3 and phosphate mullite pouring material 4.The utility model is a kind of anti-lining of rotary kiln end kiln tail masonry way in service life that prolongs, to reduce anti-material expense and to reduce worker's labour intensity.

In order to solve the problem that prior art exists and to overcome its defective, realize prolonging kiln hood, the kiln tail castable goal of the invention in service life, the technical scheme that the utility model is taked is:

As shown in Figure 2, the applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-lining cutting the provided by the utility model in described phosphate mullite pouring material 4, arranges a plurality of hanger bricks 5, and the profile of described hanger brick 5 is corrugated.

Undulatory profile has increased the fastness that be connected of hanger brick 5 with phosphate mullite pouring material 4.

The material of described hanger brick 5 adopts aluminous refractory.

The utility model improves the castable supporting construction, turns 5 as main to hang, and anchor rib is that anchoring hook 3 is auxiliary support castable.Because hanger brick 5 usefulness aluminous refractories form by a firing, can under higher temperature, use for a long time and can not be out of shape, ftracture.High aluminum hanger brick serviceability temperature can reach 1450 ℃, thereby improved the performance of castable support frame, has prolonged the service life of kiln hood, kiln tail castable.

Kiln hood, the evidence of kiln tail castable masonry way: from July, 2011, use till in March, 2012, kiln hood, kiln tail castable only have on a small quantity and come off, and do not affect normal production, judge and can also use more than 2 months at least.Kiln hood, kiln tail castable can only not used the time about 3 months before transforming, and can use more than 9 months at least after the transformation, are 3 times before transforming.Saved a large amount of man power and materials, through calculating the annual castable expense of saving more than more than 50 ten thousand yuan, every young repair time has produced considerable economic benefit about 7 days.

Its concrete masonry way is:

Before kiln hood, the anti-lining cutting of kiln tail were built, at first to kiln hood, 2 polishings of kiln tail steel construction totally, the welding anchoring colluded 3, is welded and fixed to hang to turn 5, and last formwork is built phosphate corundum-mullite castable 4.

The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims

1. applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-the lining cutting, comprise break iron (1), kiln head and tail steel construction (2), anchoring hook (3) and phosphate mullite pouring material (4), it is characterized in that: in described phosphate mullite pouring material (4), a plurality of hanger bricks (5) are set, and the profile of described hanger brick (5) is corrugated.

2. according to the applied to pelletizing rotary kiln kiln hood kiln tail building structure of anti-lining cutting the claimed in claim 1, it is characterized in that: the material of described hanger brick (5) adopts aluminous refractory.