A ferroalloy smelting ore-heat furnace

Abstract

The utility model discloses an ore-heat furnace for smelting ferroalloys, comprising a furnace body, a water quenching box, a lifting conveyor, a sorting box and a controller. The furnace body is connected with the water quenching box through a slag dropping bucket at the bottom, and the sorting box is located at one side of the water quenching box. A sorting component for separating iron-containing impurities and other impurities and a collecting drawer for collecting sorted impurities are installed inside the sorting box. The utility model screens the slag discharged from the ore-heat furnace by arranging the sorting box, so as to facilitate the secondary recycling of the internal iron-containing impurities and avoid the waste of iron ore resources. At the same time, the sorting component in the sorting box uses the principle that iron itself has magnetism to magnetically adsorb iron-containing impurities, discharges other impurities that do not contain iron into the collecting drawer for collection, and replaces a new collecting drawer after sorting to collect the iron-containing impurities together for secondary smelting. The operation is simple and the sorting efficiency is significantly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ore-fired furnaces, in particular to an ore-fired furnace for smelting ferroalloys. Background Art

[0002] There are usually more iron-containing impurities in the impurities discharged from the electric arc furnace after smelting. However, in general, the slag discharged from the electric arc furnace will be directly landfilled as general waste after water quenching, or directly recycled into other minerals. The iron-containing impurities are not screened and further recycled, resulting in a waste of iron ore resources. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a ferroalloy smelting ore-heat furnace, which can screen the iron-containing impurities in the slag discharged from the ore-heat furnace so as to reuse them after re-smelting, thereby avoiding the waste of iron ore resources.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0005] A ferroalloy smelting ore-heat furnace comprises a furnace body, a water quenching box, a lifting conveyor, a sorting box and a controller, wherein the furnace body is connected with the water quenching box through a slag hopper at the bottom, and the sorting box is located on one side of the water quenching box; the discharge side of the water quenching box is connected with the feed bottom end of the lifting conveyor, and the other end of the lifting conveyor is located on the top of the sorting box; a feed hopper connected with the box body is arranged on the top of the sorting box, and the feed hopper is located directly below the discharge side of the lifting conveyor; a sorting component for separating iron-containing impurities and other impurities and a collecting drawer for collecting sorted impurities are installed inside the sorting box; the collecting drawer is located below the sorting component and is slidably arranged at the bottom of the sorting box.

[0006] The above-mentioned ferroalloy smelting ore-heat furnace, the sorting component includes a mounting bracket installed in the middle of the sorting box, a U-shaped circumferential rotating frame is installed above the mounting bracket, and a number of conical electromagnets for magnetically adsorbing iron-containing impurities are evenly arranged between the brackets on both sides of the circumferential rotating frame; a motor for magnetizing the electromagnet is installed inside the electromagnet, and the controlled end of the motor is connected to the output end of the controller; the brackets on both sides of the circumferential rotating frame are hollow structures and form a drop channel for other impurities to pass through.

[0007] In the above-mentioned ferroalloy smelting ore-fired furnace, the mounting bracket is arranged in a cross shape, and the mounting bracket is made of non-magnetic material.

[0008] In the above-mentioned ferroalloy smelting ore-heat furnace, a gate valve for controlling the discharge of slag is installed between the bottom of the furnace body and the slag hopper, and the controlled end of the gate valve is connected to the output end of the controller.

[0009] In the above-mentioned ferroalloy smelting ore furnace, a level sensor for detecting the accumulation of slag level is also arranged at the bottom of the furnace body, and the output end of the level sensor is connected to the input end of the controller.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0011] The utility model provides an ore-heat furnace for smelting ferroalloys. A sorting box is arranged to screen the slag discharged from the ore-heat furnace, so that the secondary recycling of the internal iron-containing impurities is facilitated, and the waste of iron ore resources is avoided. At the same time, the sorting components in the sorting box use the principle that iron itself has magnetism to magnetically adsorb the iron-containing impurities, and discharge other impurities that do not contain iron into a collecting drawer for collection. After the sorting is completed, a new collecting drawer is replaced to collect the iron-containing impurities together for secondary smelting. The operation is simple and the sorting efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the specific structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the specific structure of the screening component of the utility model.

[0014] Among them: 1. furnace body, 2. gate valve, 3. slag hopper, 4. water quenching box, 5. lifting conveyor, 6. sorting box, 7. feed hopper, 8. collection drawer, 9. installation bracket, 10. circumferential rotating frame, 11. electromagnet. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] A ferroalloy smelting ore-heat furnace, such as Figure 1 to Figure 2 As shown, it includes a furnace body 1, a water quenching box 4, a lifting conveyor 5, a sorting box 6 and a controller. The furnace body 1 is connected to the water quenching box 4 through a slag hopper 3 at the bottom, and the sorting box 6 is located on one side of the water quenching box 4.

[0017] A gate valve 2 for controlling the discharge of slag is also installed between the bottom of the furnace body 1 and the slag hopper 3, and a controlled end of the gate valve 2 is connected to an output end of the controller.

[0018] A level sensor for detecting the accumulated slag level is also provided at the bottom of the furnace body 1 , and the output end of the level sensor is connected to the input end of the controller to facilitate controlling the gate valve 2 to discharge the slag.

[0019] The water quenching box 4 is used to cool the high-temperature slag discharged from the furnace body 1 to make it solid for subsequent processing.

[0020] The discharge side of the water quenching box 4 is connected to the feed bottom end of the lifting conveyor 5 , and the other end of the lifting conveyor 5 is located on the top of the sorting box 6 .

[0021] A feed hopper 7 connected to the box body is provided on the top of the sorting box 6 , and the feed hopper 7 is located directly below the discharge side of the lifting conveyor 5 .

[0022] A sorting assembly for separating iron-containing impurities from other impurities and a collecting drawer 8 for collecting sorted impurities are installed inside the sorting box 6. The collecting drawer 8 is located below the sorting assembly and is slidably arranged at the bottom of the sorting box 6.

[0023] The sorting component includes a mounting bracket 9 installed in the middle of the sorting box 6, a U-shaped circumferential rotating frame 10 is installed above the mounting bracket 9, and a plurality of electromagnets 11 are evenly spaced between the brackets on both sides of the circumferential rotating frame 10. The circumferential rotating frame 10 can drive the electromagnets 11 to move circumferentially to complete the continuous adsorption of iron-containing impurities.

[0024] The brackets on both sides of the circumferential rotating frame 10 are hollow structures, forming a material drop channel for other impurities to pass through, so as to facilitate screening other impurities without iron into the collection drawer 8 below.

[0025] A motor is installed inside the electromagnet 11, which can make the electromagnet 11 have a certain magnetism when the motor is powered on, so as to complete the sorting of iron-containing impurities and facilitate their recycling. The controlled end of the motor is connected to the output end of the controller.

[0026] The electromagnet 11 is arranged in a cone shape, so that it can magnetically adsorb the iron-containing impurities without affecting the feeding and dropping of other impurities.

[0027] The mounting bracket 9 is arranged in a cross shape and is made of a non-magnetic material, which can prevent the mounting bracket 9 from coming into contact with iron-containing impurities and leaving them on the surface of the mounting bracket.

[0028] When in use, first, the controller controls the gate valve 2 to open for slag discharge according to the degree of slag accumulation in the furnace body 1, so that the slag is sent to the water quenching box 4 through the slag dropping bucket 3 for cold quenching treatment, and then the slag solid after water quenching treatment is sent to the sorting box 6 through the lifting conveyor 5.

[0029] Before the slag passes through the feed hopper 7 and enters the sorting box, the motor is first started to energize the electromagnet 11 and make it magnetic. After the slag falls into the sorting box 6, the iron-containing impurities will be adsorbed on the surface of the electromagnet 11 by magnetic force, and other impurities that do not contain iron will fall into the collection drawer 8 at the bottom through the hollow gap on the circumferential rotating frame 10.

[0030] Since a number of electromagnets 11 are arranged on the circumferential rotating frame 10, it does not affect the screening of iron-containing impurities and other impurities when the amount of slag is relatively large. After a period of time after the material dropping is completed, the collecting drawer 8 is opened, and other impurities inside are taken out for recycling or landfilling, etc., and then put into a new collecting drawer 8, and then the power supply to the electromagnet 11 is stopped. At this time, the battery iron 11 is in a non-magnetic state, and the iron-containing impurities adsorbed on the surface of the electromagnet fall back into the collecting drawer, and then the collecting drawer containing iron-containing impurities is taken out and smelted again to obtain the iron ore resources inside it.

[0031] The utility model provides an ore-heat furnace for smelting ferroalloys. A sorting box is arranged to screen the slag discharged from the ore-heat furnace, so that the secondary recycling of the internal iron-containing impurities is facilitated, and the waste of iron ore resources is avoided. At the same time, the sorting components in the sorting box use the principle that iron itself has magnetism to magnetically adsorb the iron-containing impurities, and discharge other impurities that do not contain iron into a collecting drawer for collection. After the sorting is completed, a new collecting drawer is replaced to collect the iron-containing impurities together for secondary smelting. The operation is simple and the sorting efficiency is significantly improved.

Claims

1. A ferroalloy smelting ore-fired furnace, characterized in that: The invention comprises a furnace body (1), a water quenching box (4), a lifting conveyor (5), a sorting box (6) and a controller. The furnace body (1) is connected to the water quenching box (4) through a slag hopper (3) at the bottom. The sorting box (6) is located on one side of the water quenching box (4). The discharge side of the water quenching box (4) is connected to the feed bottom end of the lifting conveyor (5). The other end of the lifting conveyor (5) is located on the top of the sorting box (6). A feed hopper (7) connected to the box body is arranged on the top of the sorting box (6). The feed hopper (7) is located directly below the discharge side of the lifting conveyor (5). A sorting component for separating iron-containing impurities and other impurities and a collecting drawer (8) for collecting sorted impurities are installed inside the sorting box (6). The collecting drawer (8) is located below the sorting component and is slidably arranged at the bottom of the sorting box (6).

2. The ferroalloy smelting ore furnace according to claim 1, characterized in that: The sorting component comprises a mounting bracket (9) mounted in the middle of a sorting box (6); a U-shaped circumferential rotating frame (10) is mounted above the mounting bracket (9); a plurality of conical electromagnets (11) for magnetically adsorbing iron-containing impurities are evenly arranged between the brackets on both sides of the circumferential rotating frame (10); a motor for magnetizing the electromagnet (11) is mounted inside the electromagnet (11); a controlled end of the motor is connected to an output end of a controller; a hollow structure is formed between the brackets on both sides of the circumferential rotating frame (10) to form a material drop channel for other impurities to pass through.

3. The ferroalloy smelting ore furnace according to claim 2, characterized in that: The mounting bracket (9) is arranged in a cross shape, and the mounting bracket (9) is made of non-magnetic material.

4. The ferroalloy smelting ore furnace according to claim 1, characterized in that: A gate valve (2) for controlling the discharge of slag is also installed between the bottom of the furnace body (1) and the slag hopper (3), and the controlled end of the gate valve (2) is connected to the output end of the controller.

5. The ferroalloy smelting ore furnace according to claim 1, characterized in that: A material level sensor for detecting the accumulation of slag material level is also provided at the bottom of the furnace body (1), and the output end of the material level sensor is connected to the input end of the controller.

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