Apparatus for heating alloy pellets with air

Abstract

The utility model discloses a kind of air heating alloyed pellet devices, belong to metallurgical equipment technical field, solve the problem that alloyed pellet needs to be heated to transport, alloyed pellet heating device long running time.This utility model includes furnace kiln cylinder, heating assembly is equipped in furnace kiln cylinder, air inlet is arranged on one side of furnace kiln cylinder, centrifugal fan is connected on air inlet, air outlet is arranged on the other side of furnace kiln cylinder, alloyed pellet bin is connected with air outlet by pipeline.The utility model is simple in structure, stable in operation, alloyed pellet is heated by hot air, realize the uniform heating of alloyed pellet, effectively reduce the heating time of original heating device.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, specifically relating to an air-heated alloy pellet device. Background Technology

[0002] In metallurgical production processes, the alloy materials involved are mostly fine-particle powders, characterized by large surface area, high fluidity, and easy airborne properties. According to the original production plan, these alloy powders need to be directly transported to metallurgical furnaces (such as electric arc furnaces or submerged arc furnaces) via belt conveyors for smelting. However, when the alloy powders are running on the belt conveyors, they are easily affected by vibration and airflow disturbances, generating a large amount of dust. This dust is easily carried into the flue gas duct by the furnace dust, resulting in waste. The alloy powders that do not participate in smelting will deposit on the inner wall of the flue gas duct and the surface of the heat exchanger, forming a dense dust layer.

[0003] Therefore, a pretreatment process of "material pressing and molding" is required for alloy powder, that is, pressing alloy powder into alloy pellets using a briquetting machine. However, its internal structure is mainly "loosely bonded particles", with low mechanical strength, and it is easy to break due to collision and friction. A "heat curing" process needs to be added after briquetting. Low-temperature heating further enhances the bonding force between powder particles inside the pellets, meeting the strength requirements of subsequent long-distance conveyor belt transportation and multi-stage transfer. It will basically not break before reaching the furnace. However, at present, heating alloy pellets mostly uses high-temperature heating devices, such as rotary kilns and belt roasters, which require long-term heating to complete the heating of alloy pellets. Utility Model Content

[0004] This invention provides an air-heated alloy pellet device to solve the problems of existing alloy pellets requiring heating before transportation and the long operating time of alloy pellet heating devices.

[0005] The technical solution of this utility model is: an air-heated alloy pellet device, including a furnace cylinder, a heating component is provided inside the furnace cylinder, an air inlet is provided through one side of the furnace cylinder, a centrifugal fan is connected to the air inlet, an air outlet is provided through the other side of the furnace cylinder, and an alloy pellet chamber is connected to the air outlet through a pipe.

[0006] As a further improvement of this utility model, an air inlet screen is provided at the bottom of the alloy ball chamber, and a flap valve is provided outside the air inlet screen. The air inlet screen can prevent the alloy balls from falling into the pipe, while ensuring that hot air enters the alloy ball chamber.

[0007] As a further improvement of this utility model, multiple guide plates are also horizontally arranged inside the furnace cylinder, and the guide plates are close to the heating components.

[0008] As a further improvement of this utility model, a temperature measuring component is provided on the air outlet to facilitate control of the heating temperature of the alloy pellets.

[0009] As a further improvement of this utility model, an insulation layer is provided outside the furnace cylinder.

[0010] The beneficial effects of this invention are as follows: By adding a heating component inside the furnace shell, and using a centrifugal fan to transport the heat generated by the heating component to the bottom of the alloy pellet bin, the alloy pellets are heated using the transported hot air. This reduces the heating time compared to existing heating devices and eliminates the need for secondary transport of the alloy pellets for heating, effectively improving work efficiency. Furthermore, this invention utilizes a temperature measuring component at the furnace shell's air outlet to achieve temperature control, allowing for both temperature determination and real-time monitoring of the furnace shell's temperature, preventing dry burning. This invention features a simple structure and stable operation, achieving uniform heating of the alloy pellets through hot air heating, effectively reducing the heating time of traditional heating devices. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the diagram: 1. Centrifugal fan; 2. Air inlet; 3. Furnace body; 4. Insulation layer; 5. Heating component; 6. Guide plate; 7. Temperature measuring component; 8. Air outlet; 9. Air inlet screen; 10. Alloy ball chamber; 11. Flip valve. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 As shown, an air-heated alloy pellet device includes a furnace cylinder 3, a heating component 5 inside the furnace cylinder 3, an air inlet 2 penetrating one side of the furnace cylinder 3, a centrifugal fan 1 connected to the air inlet 2, and an air outlet 8 penetrating the other side of the furnace cylinder 3, the air outlet 8 being connected to an alloy pellet chamber 10 via a pipe.

[0015] The bottom of the alloy ball chamber 10 is equipped with an air inlet screen 9, and a flap valve 11 is provided outside the air inlet screen 9. The air inlet screen 9 can prevent the alloy balls from falling into the pipe, while ensuring that hot air enters the alloy ball chamber 10.

[0016] Multiple guide plates 6 are horizontally arranged inside the furnace cylinder 3, and the guide plates 6 are close to the heating components 5.

[0017] A temperature measuring component 7 is provided on the air outlet 8 to facilitate control of the heating temperature of the alloy pellets.

[0018] The furnace cylinder 3 is equipped with an insulation layer 4.

[0019] In use, the heating component 5 is powered on, and the centrifugal fan 1 is started simultaneously. The air generated by the centrifugal fan 1 enters the furnace shell 3 through the air inlet 2. The heat generated by the heating component 5 in the furnace shell 3 is transferred to the air outlet 8 through the air duct formed by the guide plate 6. The temperature measuring component 7 at the air outlet 8 measures the temperature in real time. When the temperature reaches the heating temperature, the flap valve 11 is opened, and the hot air is transported through the air outlet 8 to the bottom of the alloy ball chamber 10 through the pipeline. Finally, it passes through the air inlet net 9 to heat the alloy balls in the alloy ball chamber 10. The temperature of the heating component 5 is adjusted according to the heating time. Finally, the heated alloy balls can meet the transportation conditions normally and avoid breakage and scattering.

Claims

1. An apparatus for air-heating alloy pellets, comprising a furnace cylinder (3), characterized in that: The furnace cylinder (3) is equipped with a heating component (5). An air inlet (2) is provided through one side of the furnace cylinder (3), and a centrifugal fan (1) is connected to the air inlet (2). An air outlet (8) is provided through the other side of the furnace cylinder (3), and an alloy ball chamber (10) is connected to the air outlet (8) through a pipe.

2. The apparatus for air-heating alloy pellets according to claim 1, characterized in that: The bottom of the alloy spherical compartment (10) is provided with an air inlet screen (9), and a flap valve (11) is provided outside the air inlet screen (9).

3. The apparatus for air-heating alloy pellets according to claim 1, characterized in that: The furnace cylinder (3) is also provided with multiple horizontal guide plates (6), which are close to the heating components (5).

4. The apparatus for air-heating alloy pellets according to claim 3, characterized in that: A temperature measuring component (7) is provided on the air outlet (8).

5. The apparatus for air-heating alloy pellets according to any one of claims 1-4, characterized in that: The furnace cylinder (3) is provided with an insulation layer (4).

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