A nickel-iron ore heating furnace insulation device
By designing a composite insulation furnace wall structure in a nickel iron ore hot furnace, the problem of degradation, shrinkage or cracking of a single refractory brick at high temperature is solved, and more effective insulation effect and long-term stability of the furnace wall are achieved.
Patent Information
- Application Number
- CN202421162046.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When existing nickel iron ore hot furnaces use a single refractory brick for insulation operation, they are prone to problems such as high-temperature degradation, shrinkage or cracks, which affects the insulation effect.
A composite insulation furnace wall structure consisting of an inner layer, an intermediate layer and an outer layer is designed. The inner layer is a refractory brick, the middle layer is a fiber felt close to the outer surface of the refractory brick, and the outer layer is concrete covered outside the fiber felt, forming a multi-layer insulation structure.
Through this composite insulation structure, it can not only withstand high temperatures effectively, but also provide high temperature resistance and thermal insulation effects, enhance the strength and stability of the furnace wall, and reduce heat loss and maintenance frequency.
Smart Images
Figure CN222703807U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of heat preservation devices, and in particular to a heat preservation device for a nickel-iron ore furnace. Background Art
[0002] In the prior art, during the use of the nickel-iron ore furnace, due to the large temperature difference between the inside and outside of the furnace body, the high-temperature heat inside the furnace body will overflow through the furnace wall, thereby causing heat loss of the ore furnace. The traditional ore furnace insulation structure usually only uses refractory bricks for insulation operation, which makes the single refractory bricks easily degrade, shrink or crack after being subjected to high temperature for a long time, which affects the insulation condition. Utility Model Content
[0003] The problem to be solved by the present application is that when the existing ore-fired furnace uses a single refractory brick for heat preservation operation, it is easy to suffer from the problems of degradation, shrinkage or cracking after high temperature, which affects the heat preservation.
[0004] In order to solve the above-mentioned technical problems, the present application provides a nickel-iron ore heating furnace insulation device, which is a composite insulation furnace wall structure composed of an inner layer, a middle layer and an outer layer. The inner layer is composed of refractory bricks that can withstand high temperatures and protect the furnace structure from external influences. The middle layer is composed of fiber felt arranged close to the outer surface of the refractory bricks to provide high temperature resistance and insulation. The outer layer is composed of concrete wrapped around the outside of the fiber felt to provide additional insulation effect and enhance the strength of the furnace wall.
[0005] Since the insulation device of the present application is designed with a composite insulation furnace wall structure composed of an inner layer, a middle layer and an outer layer, the inner layer can withstand the high temperature in the furnace, the middle layer can provide high temperature resistance and insulation, and the outer layer can provide additional insulation and strength improvement, thereby solving the problem of the prior art of using a single refractory brick for insulation operation, which is prone to degradation, shrinkage or cracking after high temperature, which affects the insulation. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment.
[0007] Figure 2 for Figure 1 Schematic diagram of the structure at AA in the middle.
[0008] Figure 3 for Figure 1 Schematic diagram of the structure at BB in the middle.
[0009] Figure 4 for Figure 1 Schematic diagram of the structure at CC in the middle.
[0010] Figure 5 for Figure 1 Schematic diagram of the structure at DD in the figure.
[0011] Figure 6 for Figure 2 Schematic diagram of the structure at EE.
[0012] In the figure: 1, outer layer; 2, middle layer; 3, inner layer; 4, metal pipe fittings; 5, upper layer; 6, lower layer; 7, asbestos tape. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example
[0014] The present application relates to a nickel iron ore furnace insulation device, such as Figure 1-6 As shown, the thermal insulation device is a furnace wall structure composed of an inner layer 3, a middle layer 2 and an outer layer 1. The inner layer 3 is composed of refractory bricks that can withstand high temperatures and protect the furnace structure from external influences. The middle layer 2 is composed of fiber felt arranged close to the outer surface of the refractory bricks to provide high temperature resistance and thermal insulation. The outer layer 1 is composed of concrete wrapped on the outside of the fiber felt to provide additional thermal insulation and enhance the strength of the furnace wall. As a result, the furnace wall can effectively reduce the heat conduction of the furnace wall, improve the stability and durability of the furnace wall under long-term high temperatures, and reduce the replacement and maintenance frequency of the furnace wall by means of the composite thermal insulation structure design of three layers of different materials. In order to ensure the strength and thermal insulation performance of the furnace wall, the thickness of the inner layer 3 is 100-120 mm, and the thickness ratio between the inner layer 3, the middle layer 2 and the outer layer 1 is 1.85-1.95:1:5.77.
[0015] Metal pipes 4 for connecting with other processing equipment are evenly arranged on the upper part of the furnace wall. In order to allow the metal pipes 4 to expand freely after being heated, the surface of the metal pipes 4 is evenly covered with asbestos tapes 7.
[0016] Refractory bricks are wedge-shaped bricks made of refractory clay.
[0017] The fiber felt is a high-density aluminum silicate fiber felt.
[0018] In order to further improve the thermal insulation capacity of the furnace wall, a furnace bottom structure consisting of an upper layer 5 and a lower layer 6 is added to the bottom of the furnace wall. The upper layer 5 is a refractory concrete used to provide high temperature resistance and help maintain the stability of the furnace wall structure, and the lower layer 6 is a thermal insulation concrete used to provide high thermal insulation. Therefore, the overall performance of the furnace wall is effectively improved by the superimposed arrangement of refractory concrete and thermal insulation concrete. The thickness of the upper layer 5 is 110-120 mm, and the thickness ratio between the upper layer 5 and the lower layer 6 is 1:1-1.2.
[0019] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.
[0020] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).
[0021] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A nickel-iron ore furnace insulation device, characterized in that: The insulation device is a composite insulation furnace wall structure composed of an inner layer, a middle layer and an outer layer. The inner layer is composed of refractory bricks that can withstand high temperatures and protect the furnace structure from external influences. The middle layer is composed of fiber felt arranged close to the outer surface of the refractory bricks to provide high temperature resistance and insulation. The outer layer is composed of concrete wrapped around the outside of the fiber felt to provide additional insulation and enhance the strength of the furnace wall.
2. A nickel-iron ore furnace insulation device according to claim 1, characterized in that: The thickness of the inner layer is 100-120 mm.
3. A nickel-iron ore furnace insulation device according to claim 1, characterized in that: The thickness ratio between the inner layer, the middle layer and the outer layer is 1.85-1.95:1:5.
77.
4. The nickel-iron ore furnace insulation device according to claim 1, characterized in that: Metal pipes are evenly arranged on the upper part of the furnace wall, and the surface of the metal pipes is evenly covered with asbestos tape.
5. The nickel-iron ore furnace insulation device according to claim 1, characterized in that: A furnace bottom structure consisting of an upper layer and a lower layer is arranged at the bottom of the furnace wall.
6. A nickel-iron ore furnace insulation device according to claim 5, characterized in that: The upper layer is refractory concrete used to provide high temperature resistance and help maintain the stability of the furnace wall structure, and the lower layer is thermal insulation concrete used to provide high thermal insulation effects.
7. A nickel-iron ore furnace insulation device according to claim 6, characterized in that: The thickness of the upper layer is 110 to 120 mm.
8. The nickel-iron ore furnace insulation device according to claim 6, characterized in that: The thickness ratio between the upper layer and the lower layer is 1:1 to 1.
2.
9. The nickel-iron ore furnace insulation device according to claim 1, characterized in that: Refractory bricks are wedge-shaped bricks made of refractory clay.
10. The nickel-iron ore furnace insulation device according to claim 1, characterized in that: The fiber felt is a high-density aluminum silicate fiber felt.