Uniform feeding device for ore smelting furnace

Abstract

The utility model discloses a uniform feeding device of ore heating furnace, include: feed inlet, receiving box, conveyer belt, push material mechanism, ore heating furnace feed inlet whole is set up in the inclination, its top surface is installed with receiving box, the front and back end wall surface of receiving box all are established with the installation mouth, the both sides of conveyer belt all are installed with the baffle, the front end of conveyer belt and baffle all pass through the installation mouth, and continue to extend to the front, the utility model provides a uniform feeding device of ore heating furnace solves the current in the ore heating furnace is loaded, through placing the ore in the loading trolley, mostly in the discharge port of batching device and the feeding port of ore heating furnace single line movement between, especially when loading for small ore heating furnace, owing to small ore heating furnace is 1-2m height, single line movement leads to the overall loading efficiency to be low, in the stage of feeding, the direct pouring loading mode can cause the problem of ore spilling.

Description

Technical Field

[0001] This utility model relates to the field of feeding equipment technology, and in particular to a uniform feeding device for a submerged arc furnace. Background Technology

[0002] A submerged arc furnace (SAF) is an electric furnace used for smelting metals, primarily for producing ferroalloys, industrial silicon, calcium carbide, and yellow phosphorus. It converts electrical energy into heat energy through electrodes, reducing or melting the ore at high temperatures to obtain the desired metal or compound. SAFs typically require a high-power power supply to provide sufficient heat for melting and reducing the ore. The electrodes are embedded in the raw material, and the electric arc is generated within the material, reducing radiation loss to the environment and improving thermal efficiency. SAFs can achieve continuous production and are suitable for large-scale industrial applications. They can be used to smelt various metals and compounds, such as ferrosilicon, ferromanganese, ferrochrome, and industrial silicon. Made of refractory materials, it can withstand high temperatures and chemical corrosion. It is usually graphite or self-baking electrodes, used to conduct current and generate an electric arc. Ore, coke or other reducing agents are placed below the electrodes to form a raw material layer, which is used to cool the furnace body and electrodes, prevent overheating damage, and discharge the flue gas and gases generated during the smelting process. The current is transmitted to the raw material layer through the electrodes to generate an electric arc. The high temperature generated by the electric arc melts the raw material and causes a reduction reaction. At high temperatures, the oxides in the ore are reduced by the reducing agent (such as coke) to generate metals or compounds. The generated metals or compounds are discharged from the bottom of the furnace, and the flue gas is treated by the flue gas exhaust system.

[0003] Currently, when feeding ferroalloy furnaces, the ore is placed in the feeding trolley, and the ore moves in a single line between the discharge port of the batching device and the feeding port of the ferroalloy furnace. This is especially true for feeding small ferroalloy furnaces, which are only 1-2 meters high. This single-line movement results in low overall feeding efficiency. In the feeding stage, the direct pouring method may cause the ore to spill.

[0004] Therefore, it is necessary to provide a uniform feeding device for electric arc furnaces to solve the above-mentioned technical problems. Utility Model Content

[0005] In response to the above situation and to overcome the defects of the existing technology, this utility model provides a uniform feeding device for electric arc furnaces. This solves the problem that when feeding electric arc furnaces, the ore is placed in the feeding trolley, and it mostly moves in a single line between the discharge port of the batching device and the feeding port of the electric arc furnace. Especially when feeding small electric arc furnaces, which are only 1-2 meters high, the single-line movement results in low overall feeding efficiency. In the feeding stage, the direct pouring method may cause the ore to spill.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] The uniform feeding device for an electric arc furnace includes: a feed inlet, a receiving box, a conveyor belt, and a pushing mechanism;

[0008] The feed inlet of the electric arc furnace is inclined, and a receiving box is installed on its top surface. The front and rear end walls of the receiving box are provided with installation openings. Baffles are installed on both sides of the conveyor belt. The front ends of the conveyor belt and the baffles pass through the installation openings and continue to extend forward.

[0009] In one embodiment, partitions are installed at intervals on the top surface of the conveyor belt, and multiple sets of partitions are arranged at equal intervals, with two sets of partitions together forming a feeding area.

[0010] In one embodiment, the baffle plate inside the receiving box has a notch, and the width of the notch is consistent with the spacing between the two baffles.

[0011] In one embodiment, a pushing mechanism is installed at the right end of the notch. The pushing mechanism consists of a cylinder, a push rod, a push plate, and a protective pad. The cylinder is installed on the right side of the receiving box. The cylinder is connected to the push plate via the push rod. The push plate is located inside the right notch. A protective pad is installed on the left side of the push plate. The two are connected by bolts.

[0012] In one embodiment, a top cover is installed on the top surface of the receiving box, and an exhaust pipe is installed on the top surface of the top cover, the exhaust pipe being connected to an external fan.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) This utility model uses a conveyor belt and a receiving box to pass through each other. The conveyor belt is inside the receiving box to carry out the feeding operation, so that the ore can directly enter the receiving box and enter the furnace body through the feed port of the electric arc furnace. This avoids the problem of ore spilling during the feeding process and is not easy to collect. At the same time, it improves the accuracy of ore feeding and avoids the ore that has been weighed being affected in the refining process.

[0015] (2) By setting up partitions, this utility model can place the weighed and proportioned ore in a single area, avoiding the mixing of ores in different areas. At the same time, it can make the connection of the overall feeding stage smoother. For example, when the first group of ore is being fed, the staff can batch the subsequent ore to improve the feeding efficiency. By starting the conveyor belt, the partitions are moved to the gap slots of the feeding area. Then the conveyor belt is turned off, the cylinder is started, and the push rod and push plate are moved to the left until the ore is pushed from the conveyor belt into the receiving box, thus completing the feeding operation. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present utility model;

[0017] Figure 2 This is a detailed view of the disassembled components of this utility model;

[0018] Figure 3 This is a detailed drawing of the conveyor belt and pushing mechanism of this utility model.

[0019] The corresponding names of the attached figures are: feed inlet 1, receiving box 2, mounting port 21, top cover 22, air extraction pipe 23, conveyor belt 3, baffle 31, partition 32, notch groove 33, pushing mechanism 4, cylinder 41, push rod 42, push plate 43, and protective pad 44. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0021] like Figures 1-2 As shown, the uniform feeding device for a submerged arc furnace provided by this utility model includes: a submerged arc furnace inlet 1, a receiving box 2, a conveyor belt 3, and a pushing mechanism 4.

[0022] like Figures 1-2 As shown, the feed inlet 1 of the electric arc furnace is inclined, and a receiving box 2 is installed on its top surface. The front and rear end walls of the receiving box 2 are provided with mounting openings 21. Baffles 31 are installed on both sides of the conveyor belt 3. The front ends of the conveyor belt 3 and the baffles 31 pass through the mounting openings 21 and continue to extend forward. Both ends of the conveyor belt 3 are supported on the ground by brackets (not shown in the figure). The conveyor belt 3 and the receiving box 2 are connected in a through-type arrangement. The conveyor belt 3 is located inside the receiving box 2 to perform the feeding operation, so that the ore directly enters the receiving box 2 and enters the furnace body through the feed inlet 1 of the electric arc furnace. This avoids the problem of ore spillage during the feeding process, which is not easy to collect. At the same time, it improves the accuracy of ore feeding and avoids the ore that has already been weighed being affected in the refining process.

[0023] Preferably, in one embodiment, such as Figures 2-3 As shown, partitions 32 are installed at intervals on the top surface of the conveyor belt 3. Multiple sets of partitions 32 are arranged at equal intervals. Two sets of partitions 32 together form a feeding area. By setting the partitions 32, the weighed and proportioned ore can be placed in a single area to avoid mixing of ores in different areas. At the same time, it can make the connection of the overall feeding stage smoother. For example, when the first set of ore is being fed, the staff can batch the subsequent ore, thereby improving the feeding efficiency of the ore.

[0024] Preferably, in one embodiment, such as Figure 3As shown, the baffle 31 inside the receiving box 2 has a notch 33, and the width of the notch 33 is the same as the spacing between the two partitions 32.

[0025] Preferably, in one embodiment, such as Figure 3 As shown, a pushing mechanism 4 is installed on the right side of the notch 33. The pushing mechanism 4 consists of a cylinder 41, a push rod 42, a push plate 43, and a protective pad 44. The cylinder 41 is installed on the right side of the receiving box 2. The cylinder 41 is connected to the push plate 43 via the push rod 42. The push plate 43 is located inside the right notch 33. A protective pad 44 is installed on the left side of the push plate 43. The two are connected by bolts. During operation, the conveyor belt 3 is started, causing the partition 32 to move to the notch 33 at intervals. Then, the conveyor belt 3 is turned off, and the cylinder 41 is started, causing the push rod 42 and the push plate 43 to move to the left until the ore is pushed from the conveyor belt 3 into the receiving box 2, completing the feeding operation.

[0026] Preferably, in one embodiment, such as Figure 2 As shown, a top cover 22 is installed on the top surface of the receiving box 2, and an exhaust pipe 23 is installed on the top surface of the top cover 22. The exhaust pipe 23 is connected to an external fan. During operation, the external fan is started to drive the exhaust pipe 23 to extract air. During the feeding process, dust and impurities in the falling ore are sucked up to avoid dust leakage and pollution of the working environment.

[0027] Working principle of this utility model:

[0028] During operation, the conveyor belt 3 and the receiving box 2 are connected in a through-type configuration. The conveyor belt 3 is located inside the receiving box 2 for feeding operations, allowing the ore to directly enter the receiving box 2 and then enter the furnace body through the feed inlet 1 of the electric arc furnace. This avoids the problem of ore spillage during feeding, which is difficult to collect, and improves the accuracy of ore feeding. It also prevents the weighed ore from being affected during refining. The partition 32 allows the weighed and proportioned ore to be placed in a single area, avoiding the mixing of ores from different areas. It also makes the connection of the overall feeding stage smoother. For example, when the first batch of ore is being fed, the staff can batch the subsequent ore, improving the feeding efficiency. By starting the conveyor belt 3, the partition 32 moves the feeding area to the notch 33. Then, the conveyor belt 3 is turned off, and the cylinder 41 is started, which drives the push rod 42 and the push plate 43 to move to the left until the ore is pushed from the conveyor belt 3 into the receiving box 2, completing the feeding operation.

[0029] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A uniform feeding device for a submerged arc furnace, characterized in that, include: Feed inlet, receiving box, conveyor belt, and pushing mechanism; The feed inlet of the electric arc furnace is inclined, and a receiving box is installed on its top surface. The front and rear end walls of the receiving box are provided with installation openings. Baffles are installed on both sides of the conveyor belt. The front ends of the conveyor belt and the baffles pass through the installation openings and continue to extend forward.

2. The uniform feeding device for a submerged arc furnace according to claim 1, characterized in that, The top surface of the conveyor belt is equipped with partitions at intervals. Multiple sets of partitions are arranged at equal intervals, and two sets of partitions together form a feeding area.

3. The uniform feeding device for a submerged arc furnace according to claim 1, characterized in that, The baffle plate inside the receiving box has a notch, and the width of the notch is the same as the spacing between the two baffles.

4. The uniform feeding device for a submerged arc furnace according to claim 3, characterized in that, A pushing mechanism is installed at the right end of the notch. The pushing mechanism consists of a cylinder, a push rod, a push plate, and a protective pad. The cylinder is installed on the right side of the receiving box. The cylinder is connected to the push plate via the push rod. The push plate is located inside the right notch. A protective pad is installed on the left side of the push plate. The two are connected by bolts.

5. The uniform feeding device for a submerged arc furnace according to claim 1, characterized in that, The receiving box is equipped with a top cover, and an exhaust pipe is installed on the top surface of the top cover. The exhaust pipe is connected to an external fan.

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