Sintering cup preheating device

Abstract

The utility model relates to the technical field of sinter treatment, in particular to a preheating device for a sintering cup. Comprising a burner, a connecting pipe, a refractory sleeve, a support frame, a valve and a connector, the connecting pipe is L-shaped and consists of a horizontal pipe and a vertical pipe, and the vertical pipe extends into the sintering cup; the burner is fixedly connected to the end of the vertical pipe, the valve is connected with the horizontal pipe, one end of the connector is connected with the valve, and the other end of the connector is connected with the gas container. The fireproof sleeve is sleeved outside the connecting pipe; the supporting frame supports the connecting pipe. The environment temperature of the sintering cup body is improved, and the accuracy of sintering test results is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of sintered ore processing technology, specifically a sintering cup preheating device. Background Technology

[0002] Sintered ore is mainly used in the production of iron and steel, and can also be used to produce ferroalloys and various metallurgical alloys. Oxygen-enriched sintering can improve the mineral composition and microstructure of sintered ore, thereby improving its quality and increasing the vertical combustion rate during the sintering process, thus increasing sintered ore yield. With the increase of oxygen enrichment, the drum index of sintered ore increases significantly, while the FeO content decreases significantly. The total content of hematite and calcium ferrite in sintered ore increases, while magnetite content decreases, effectively improving the strength and reducibility of sintered ore.

[0003] The sintering cup test system is an important experimental tool for simulating actual production, evaluating the sintering performance of iron ore, optimizing sintering blends, optimizing sintering process parameters, and conducting research on technologies to improve the quality of sintered ore. The temperature of the sintering mixture directly affects the thickness of the over-wet layer and the permeability of the sintering material. If the temperature of the mixture is too low, it will seriously reduce the quality of the sintered ore, and may even prevent the sintering process from proceeding.

[0004] Currently, the common practice is to add quicklime to the batching of sintering tests, using the quicklime's slaking to provide heat energy for the mixture. However, due to the relatively small size of the sintering cup, the mixture is greatly affected by ambient temperature (especially in northern winters) when the cup is cold. When conducting sintering verification tests in a hot cup, various sintering indicators and the quality of the sintered ore are significantly reduced, affecting the accuracy of the sintering data. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides a sintering cup preheating device to increase the ambient temperature of the sintering cup and ensure the accuracy of sintering test results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sintering cup preheating device includes a burner, a connecting pipe, a refractory sleeve, a support frame, a valve, and a connector. The connecting pipe is L-shaped and consists of a horizontal pipe and a vertical pipe, with the vertical pipe extending into the sintering cup. The burner is fixed to the end of the vertical pipe, the valve is connected to the horizontal pipe, and one end of the connector is connected to the valve, while the other end is connected to a gas container. The refractory sleeve is fitted over the connecting pipe, and the support frame supports the connecting pipe.

[0008] Furthermore, the support frame includes a clamp and a telescopic rod, the telescopic rod is vertically arranged, and the clamp is fixed to the top of the telescopic rod; the connecting pipe is fixed to the clamp, and the telescopic rod adjusts the height of the connecting pipe.

[0009] Furthermore, the valve is a flow control valve.

[0010] Furthermore, the gas container is a liquefied petroleum gas (LPG) cylinder.

[0011] Furthermore, the burner is a diffusion type burner.

[0012] Furthermore, the valve and the connector are threaded together.

[0013] Furthermore, the connecting pipe and the valve are connected by threads.

[0014] Furthermore, the burner and the connecting pipe are connected by threads.

[0015] Furthermore, the included angle between the horizontal pipe and the vertical pipe is 90°~100°.

[0016] Compared with the prior art, the present invention has at least the following technical effects or advantages:

[0017] 1. This utility model features an L-shaped connecting pipe. The vertical pipe extends into the sintering cup, with the burner fixed to the end of the vertical pipe. The horizontal pipe is connected to a combustible gas container. Heat is generated through the combustion of the combustible gas, preheating the sintering cup body and its internal space, and storing and maintaining the temperature of the mixture inside the sintering cup. This improves the reproducibility, stability, comparability, and simulation effect of iron ore sintering tests. By improving and increasing the ambient temperature of the cup body, it addresses the adverse effects of low-temperature environments on the temperature of the mixture in cold-cup sintering, enhancing various sintering performance indicators and ensuring the accuracy of sintering test results.

[0018] 2. The support frame of this utility model includes a clamp and a telescopic rod. The connecting pipe is fixed by the clamp and the height of the connecting pipe is adjusted by the telescopic rod, so as to adapt to sintering cups of different sizes and specifications.

[0019] 3. The valve and connecting pipe of this utility model are connected by threads, and the valve and connector are connected by threads, which is convenient for installation and removal and can be reused.

[0020] 4. The burner of this utility model adopts a diffusion type burner. It has a large preheating area and uniform preheating. Attached Figure Description

[0021] Figure 1 This is a schematic front view of the structure of this utility model.

[0022] Figure 2 This is a schematic side view of the support frame structure of this utility model.

[0023] In the diagram: 1-burner; 2-connecting pipe; 3-refractory jacket; 4-support frame; 5-valve; 6-connector; 7-sintering cup; 41-clamp; 42-telescopic rod. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0030] like Figure 1 , Figure 2 As shown, a sintering cup preheating device includes a burner 1, a connecting pipe 2, a refractory jacket 3, a support frame 4, a valve 5, and a connector 6.

[0031] Burner 1 is a diffusion type burner. The combustion process of a diffusion type burner is more stable and less prone to backfire, thus it has higher operational reliability. In addition, it has a large preheating area and uniform preheating.

[0032] The connecting pipe 2 is made of stainless steel and is L-shaped, consisting of a horizontal pipe and a vertical pipe. In this embodiment, the angle between the vertical pipe and the horizontal pipe is 90°. The vertical pipe extends into the sintering cup 7 with an extension length of not less than 400mm.

[0033] The fire-resistant sleeve 3 is made of fire-resistant asbestos material and is fitted onto the outer surface of the connecting pipe 2.

[0034] Burner 1 is fixed to the bottom end of the vertical pipe and is threadedly connected to the vertical pipe.

[0035] Valve 5 is a flow control valve, and valve 5 is threaded to the end of the horizontal pipe.

[0036] One end of connector 6 is threaded to valve 5, and the other end is connected to a gas container via a pipeline. In this embodiment, the gas container is a liquefied petroleum gas (LPG) cylinder. Valve 5 is threaded to connecting pipe 2, and valve 5 is threaded to connector 6, facilitating installation and removal and enabling reuse.

[0037] The support frame 4 includes a clamp 41 and a telescopic rod 42. The telescopic rod 42 is vertically arranged, and the clamp 41 is fixed to the top of the telescopic rod 42. The telescopic rod 42 is an electric push rod or a threaded rod. The clamp 41 can fix the connecting pipe 2, and the telescopic rod 42 can extend and shorten, thereby adjusting the height of the connecting pipe 2. This allows the present invention to adapt to sintering cups of different sizes and specifications.

[0038] The working principle and process of this utility model are as follows:

[0039] First, connect connector 6 to the liquefied gas cylinder via a rubber hose, open the liquefied gas cylinder valve, and set the gas pressure to 0.1 MPa. Insert the vertical tube of connector 2 into the sintering cup 7 (φ200×700mm), and adjust and fix the height of connector 2 using support bracket 4. Ignite burner 1 using valve 5, preheating for 8 minutes. After preheating, close valve 5, remove connector 2 from the sintering cup 7, and close the liquefied gas cylinder valve. This completes the sintering cup preheating process; proceed with the mixing and feeding operation.

[0040] This invention utilizes the heat generated by the combustion of combustible gas to preheat the sintering cup body and its internal space, thereby storing and maintaining the temperature of the mixture inside the sintering cup. This improves the reproducibility, stability, comparability, and simulation effect of iron ore sintering tests. By improving and increasing the ambient temperature of the cup body, it addresses the adverse effects of low-temperature environments on the temperature of the mixture in cold cup sintering, enhancing various sintering performance indicators and ensuring the accuracy of sintering test results.

[0041] The scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A sintering cup preheating device, characterized in that: Includes burners, connecting pipes, refractory jackets, support frames, valves, and connectors; The connecting pipe is L-shaped and consists of a horizontal pipe and a vertical pipe, with the vertical pipe extending into the sintering cup; The burner is fixed to the end of the vertical pipe, the valve is connected to the horizontal pipe, one end of the connector is connected to the valve, and the other end is connected to the gas container. The refractory sleeve is fitted over the outside of the connecting pipe; The support frame supports the connecting pipe.

2. The sintering cup preheating device according to claim 1, characterized in that: The support frame includes a clamp and a telescopic rod, the telescopic rod is set vertically, and the clamp is fixed to the top of the telescopic rod; The connecting pipe is fixed to the clamp, and the telescopic rod adjusts the height of the connecting pipe.

3. The sintering cup preheating device according to claim 1, characterized in that: The valve is a flow control valve.

4. The sintering cup preheating device according to claim 1, characterized in that: The gas container is a liquefied petroleum gas (LPG) cylinder.

5. The sintering cup preheating device according to claim 1, characterized in that: The burner is a diffusion type burner.

6. The sintering cup preheating device according to claim 1, characterized in that: The connecting pipe and the valve are connected by threads.

7. The sintering cup preheating device according to claim 1, characterized in that: The valve and the connector are threaded together.

8. The sintering cup preheating device according to claim 1, characterized in that: The burner and the connecting pipe are connected by threads.

9. A sintering cup preheating device according to claim 1, characterized in that: The angle between the horizontal pipe and the vertical pipe is 90°~100°.

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