Heat insulation device for blast furnace slag runner
By using a combination structure of steel plates, insulation blankets, casting frames, and refractory castables in the slag and iron trench, the problem of water pipe corrosion caused by refractory material shedding was solved, achieving continuous and stable heat insulation effect and long service life of the equipment.
Patent Information
- Application Number
- CN202422034919.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-08-21
AI Technical Summary
Traditional slag and iron trench insulation devices are prone to refractory material detachment under high temperature environments, leading to water pipe corrosion and damage, and shortening their service life.
The structure employs a combination of steel plates, insulation blankets, casting frames, anchoring nails, and refractory castables. It utilizes the low thermal conductivity of the refractory castables and the fixing effect of the anchoring nails to form an effective insulation layer.
It extends the service life of the insulation device, reduces production costs, and maintains long-term insulation performance and device stability.
Smart Images
Figure CN223445568U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of slag iron channel heat insulation device, concretely relates to a heat insulation device for blast furnace slag iron channel. BACKGROUND
[0002] The blast furnace slag iron channel is a channel for guiding and conveying the slag and molten iron generated in the blast furnace ironmaking process, ensures the slag and molten iron to flow along the predetermined route, prevents them from flowing randomly to cause production accidents and equipment damage, and helps to realize the preliminary separation of the slag and molten iron, and convey the molten iron and slag to the subsequent processing equipment or container. At the same time, the lining material of the slag iron channel also needs to have good wear resistance and corrosion resistance, not only to prevent smoke overflow, but also to have good heat insulation effect, and can carry out normal inspection and rapid maintenance of the slag iron channel in daily production.
[0003] The traditional design of the slag iron channel heat insulation device is made of steel plate, internally installed with a serpentine water pipe, and sprayed with refractory material. When the high-temperature slag and molten iron enter the slag iron channel, the heat is first transferred to the steel plate, the cold water flows in the internal serpentine water pipe, the heat is transferred to the water in the water pipe, the temperature of the water rises after absorbing the heat, and the heat is taken away through continuous water circulation, thereby reducing the temperature of the device. At the same time, the sprayed refractory material plays a role in blocking the heat transfer, and the refractory material has a low thermal conductivity, which can reduce the heat transfer to the inside and outside of the device.
[0004] However, the traditional heat insulation device is used for a period of time, and the refractory material is easy to fall off in the high-temperature environment, so that the water pipe loses protection, and the water pipe is easy to be corroded and damaged, thereby greatly reducing the service life. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a heat insulation device for blast furnace slag iron channel to solve the problem that the refractory material is easy to fall off after the traditional heat insulation device is used for a period of time, the water pipe is easy to be corroded and damaged, and the service life is reduced.
[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: a heat insulation device for blast furnace slag iron channel, comprising a steel plate, the steel plate is provided with a heat preservation blanket and a pouring frame on one side respectively, the pouring frame is provided with an anchor nail net inside, and the pouring frame is filled with refractory castable.
[0007] The working principle of the utility model lies in: when it is needed to install the heat insulation device to the slag iron groove, first, the lifting hook of the crane is hooked on the lifting ring, and then the heat insulation device is covered on the slag iron groove through the crane, and when the high-temperature slag iron enters the slag iron groove, the heat is first transmitted to the refractory castable in the pouring frame, the low thermal conductivity of the refractory castable greatly reduces the heat transmission speed, and at the same time, the refractory castable in the pouring frame is fixed on the steel plate through the anchoring nail net, can bear the impact and erosion of the slag iron heat, thereby realizing the effective heat insulation of the slag iron groove.
[0008] The utility model discloses the beneficial effect lies in: adopt the thermal blanket and refractory castable combination use, and through the anchoring nail net fixed in the pouring frame, compared with the traditional spraying refractory material, not easy to fall off, greatly prolong the service life of heat insulation device, reduce production cost, and block the heat, effectively reduce the heat emission to the external environment, ensure that the heat insulation effect is sustained and stable in the long -term use process.
[0009] Scheme two, this is the preferred basic scheme, the steel plate is equipped with the peep hole, the peep hole is detachably connected with the cover plate, the steel plate is provided with the peep hole and the cover plate, and the staff can observe the condition inside the slag iron groove at any time.
[0010] Scheme three, this is the preferred basic scheme, the both sides of the steel plate are respectively equipped with the drill bar and the recess, the drill bar can be inserted into the recess of the adjacent heat insulation device, realizes quick positioning and fixed, improves the installation efficiency.
[0011] Scheme four, this is the preferred basic scheme, the thermal blanket is the aluminium silicate fiber blanket, the thermal blanket adopts the aluminium silicate fiber blanket, and the heat transfer can be further blocked, and the heat emission to the external environment is reduced.
[0012] Scheme five, this is the preferred basic scheme, the steel plate is equipped with the lifting ring, the lifting ring is arranged on the steel plate, the hoisting operation can be carried out in the installation and dismounting process, and the heat insulation device can be quickly taken out from the slag iron groove.
[0013] Scheme six, this is the preferred basic scheme, the refractory castable is high alumina heat insulation composite castable, the refractory castable adopts high alumina heat insulation composite castable, can bear the high temperature impact and erosion of the slag iron, and effectively block the heat transfer.
[0014] Scheme seven, this is the preferred basic scheme, the material of the steel plate is Q345, the material of the steel plate is Q345, Q345 has higher yield strength and tensile strength, can bear various loads and external forces in the slag iron groove, and at the same time, the good toughness of Q345 also makes the steel plate not easy to break when being impacted, improves the safety of the heat insulation device. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a kind of blast furnace slag iron channel is used the sectional view of the heat insulation device of the utility model.
[0016] Figure 2 is a kind of blast furnace slag iron channel is used the sectional view of the heat insulation device of the utility model. DETAILED DESCRIPTION
[0017] The utility model will be further explained in detail by specific implementation ways as follows:
[0018] The reference signs in the drawings of the specification include: 1, steel plate;2, heat-insulating blanket;3, pouring frame;4, anchor nail net;5, refractory castable;6, peep hole;7, cover plate;8, drill rod;9, recess;10, lifting ring.
[0019] As shown in Figure 1 and Figure 2 : a kind of blast furnace slag iron channel is used the heat insulation device, including steel plate 1, the material of steel plate 1 is Q345, steel plate 1 one side is pasted with heat-insulating blanket 2, heat-insulating blanket 2 is aluminium silicate fibre blanket, pouring frame 3 is welded on the side of steel plate 1 in heat-insulating blanket 2, anchor nail net 4 is welded in pouring frame 3, pouring frame 3 is filled with refractory castable 5, refractory castable 5 is high-alumina heat-insulating composite castable, steel plate 1 is opened with peep hole 6, peep hole 6 penetrates castable 5, cover plate 7 is hinged on peep hole 6, drill rod 8 and recess 9 are respectively arranged on the two sides of steel plate 1, steel plate 1 is fixedly connected with lifting ring 10.
[0020] The implementation mode of the embodiment is: when the heat insulation device needs to be installed on the slag iron channel, first, the lifting hook of the crane is hooked on the lifting ring 10, then the heat insulation device is covered on the slag iron channel by the crane;When the length of the heat insulation device is not enough, several heat insulation devices need to be spliced, first, the drill rod 8 and the recess 9 on the several heat insulation devices are embedded and fixed with each other to complete splicing, then the spliced heat insulation device is covered on the slag iron channel by the crane;When high-temperature slag iron enters the slag iron channel, heat is first transferred to the high-alumina heat-insulating composite castable 5 in the pouring frame 3, the low thermal conductivity of the high-alumina heat-insulating composite castable 5 greatly reduces the heat transfer speed, at the same time, the high-alumina heat-insulating composite castable 5 in the pouring frame 3 is fixed on the steel plate 1 by the anchor nail net 4, can withstand the impact and erosion of slag iron heat, so as to realize effective heat insulation of the slag iron channel.
[0021] The above only is the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described too much here. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.
Claims
1. A heat insulation device for blast furnace slag iron ditch is characterized by: It comprises a steel plate (1), wherein a thermal insulation blanket (2) and a casting frame (3) are respectively provided on one side of the steel plate (1), an anchoring nail net (4) is provided in the casting frame (3), and the casting frame (3) is filled with refractory castable (5).
2. A heat insulation device for blast furnace slag trough according to claim 1, characterized in that: A peephole (6) is provided on the steel plate (1), and a cover plate (7) is detachably connected to the peephole (6).
3. The heat insulation device for blast furnace slag trough according to claim 1, characterized in that: A drill rod (8) and a groove (9) are respectively provided on both sides of the steel plate (1).
4. The heat insulation device for blast furnace slag trough according to claim 1, characterized in that: The thermal insulation blanket (2) is an aluminum silicate fiber blanket.
5. The heat insulation device for blast furnace slag trough according to claim 1, characterized in that: A lifting ring (10) is provided on the steel plate (1).
6. The heat insulation device for blast furnace slag trough according to claim 1, characterized in that: The refractory castable (5) is a high-aluminum thermal insulation composite castable.
7. The heat insulation device for blast furnace slag trough according to claim 1, characterized in that: The material of the steel plate (1) is Q345.