A smelting furnace slag recovery device

Abstract

The utility model relates to a smelting furnace slag recovery device, including inside heat exchange casing, inside heat exchange casing top is equipped with the feed pipe and is equipped with the discharge pipe at the bottom, inside heat exchange casing is equipped with outside heat exchange casing outward, be equipped with outside heat exchange cavity between inside heat exchange casing, outside heat exchange cavity side wall is equipped with outside heat exchange medium entrance and outside heat exchange medium exit, inside heat exchange casing is equipped with inside heat exchange drum, inside heat exchange drum both ends are equipped with hollow rotating shaft, hollow rotating shaft end face is closed, hollow rotating shaft rotation is installed on inside heat exchange casing, outside heat exchange casing side wall, one hollow rotating shaft is equipped with inside heat exchange medium inlet pipe and is equipped with inside heat exchange medium discharge pipe in another hollow rotating shaft, hollow rotating shaft is connected with drive mechanism, outside heat exchange casing bottom is equipped with slag treatment casing below the discharge pipe, and slag treatment casing bottom is equipped with the slagging -off mouth. The utility model can carry out recovery to heat from inside and outside two aspects synchronously, guarantees that heat recovery is more thorough and efficient.

Description

Technical Field

[0001] This utility model relates to the technical field of slag treatment equipment, and in particular to a smelting furnace slag recovery device. Background Technology

[0002] Slag, also known as molten slag, is a melt that floats on the surface of liquid substances such as metals during pyrometallurgical processes. Its composition is mainly oxides, and it often contains sulfides and a small amount of metal. Due to the strong polluting nature of slag and the presence of many other substances within it, slag generally requires a recycling device for recovery.

[0003] Currently, the equipment for recycling slag usually involves crushing and magnetic separation. For example, Chinese utility model patent CN221638242U discloses a boiler slag recycling device that recovers metal elements mixed in the slag. However, the slag itself is at a high temperature. If it enters directly, it will cause thermal damage to the internal structure of the equipment and waste heat. Utility Model Content

[0004] The present invention aims to address the shortcomings of the existing technology by providing a smelting furnace slag recovery device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A slag recovery device for a smelting furnace includes an inner heat exchange shell, a feed pipe at the top and a discharge pipe at the bottom of the inner heat exchange shell, a discharge valve on the discharge pipe, an outer heat exchange shell outside the inner heat exchange shell, an outer heat exchange cavity between the inner and outer heat exchange shells, an outer heat exchange medium inlet and an outer heat exchange medium outlet on the side wall of the outer heat exchange cavity, an inner heat exchange drum inside the inner heat exchange shell, hollow rotating shafts at both ends of the inner heat exchange drum, the end faces of the hollow rotating shafts being closed, the hollow rotating shafts being rotatably mounted on the side walls of the inner and outer heat exchange shells, an inner heat exchange medium inlet pipe passing through one hollow rotating shaft and an inner heat exchange medium outlet pipe passing through the other hollow rotating shaft, the inner heat exchange medium inlet pipe and the inner heat exchange medium outlet pipe being connected to the inner heat exchange drum, the hollow rotating shafts being connected to a drive mechanism, and a slag treatment shell at the bottom of the outer heat exchange shell below the discharge pipe, the slag treatment shell having a slag discharge port at the bottom, and a slag discharge valve on the slag discharge port.

[0007] The slag processing shell has symmetrically installed crushing rollers on both sides below the discharge pipe. The crushing rollers are connected to crushing motors, and the side walls of the crushing rollers are provided with several crushing teeth.

[0008] The slag processing shell contains a magnetic separator located below the middle of the two crushing rollers.

[0009] The magnetic separator includes a square magnetic separator block. One corner of the square magnetic separator block is located directly below the center of the two crushing rollers, and the two sides are distributed in a figure-eight shape. An electromagnet is installed inside the square magnetic separator block, and the electromagnet is connected to an energizing device.

[0010] The drive mechanism includes a rotary motor fixed to the top of the outer heat exchange housing, and the output shaft of the rotary motor and the hollow rotating shaft are connected by a chain and a sprocket.

[0011] Several baffles are evenly distributed around the circumference of the inner heat exchange drum sidewall.

[0012] Several connecting support rods are provided between the inner heat exchange shell and the outer heat exchange shell.

[0013] The beneficial effects of this utility model are: it can recover heat simultaneously from both internal and external aspects, ensuring more thorough and efficient heat recovery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 Enlarged views of the inner and outer heat exchange shells;

[0016] Figure 3 This is a schematic diagram showing the distribution of the outer baffles of the internal heat exchange drum;

[0017] In the diagram: 1-Inner heat exchange shell; 2-Feed pipe; 3-Discharge pipe; 4-Discharge valve; 5-Outer heat exchange shell; 6-Outer heat exchange cavity; 7-Outer heat exchange medium inlet; 8-Outer heat exchange medium outlet; 9-Inner heat exchange drum; 10-Hollow rotating shaft; 11-Inner heat exchange medium inlet pipe; 12-Inner heat exchange medium outlet pipe; 13-Slag treatment shell; 14-Slag discharge port; 15-Slag discharge valve; 16-Crushing roller; 17-Crushing teeth; 18-Square magnetic separator; 19-Electromagnet; 20-Rotating motor; 21-Chain; 22-Pulverizer; 23-Connecting support rod;

[0018] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0020] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] A slag recovery device for a smelting furnace, such as Figures 1 to 3 As shown, it includes an inner heat exchange shell 1, a feed pipe 2, a discharge pipe 3, a discharge valve 4, an outer heat exchange shell 5, an outer heat exchange cavity 6, an outer heat exchange medium inlet 7, an outer heat exchange medium outlet 8, an inner heat exchange drum 9, a hollow rotating shaft 10, an inner heat exchange medium inlet pipe 11, an inner heat exchange medium outlet pipe 12, a slag treatment shell 13, a slag discharge port 14, a slag discharge valve 15, a crushing roller 16, crushing teeth 17, a square magnetic separator 18, an electromagnet 19, a rotary motor 20, a chain 21, a lever 22, and a connecting support rod 23.

[0024] This utility model is divided into two parts: the upper part is a structure for recovering heat from slag, and the lower part is a structure for refining and screening the metal components contained in the slag.

[0025] The structure for recovering heat from slag can recover heat simultaneously from both internal and external sources, ensuring more thorough and efficient heat recovery. The specific structure is as follows:

[0026] The inner heat exchange shell 1 is provided with a feed pipe 2 at the top and a discharge pipe 3 at the bottom. The discharge pipe 3 is provided with a discharge valve 4. The inner heat exchange shell 1 is provided with an outer heat exchange shell 5. Several connecting support rods 23 are provided between the inner heat exchange shell 1 and the outer heat exchange shell 5.

[0027] An external heat exchange cavity 6 is provided between the inner heat exchange shell 1 and the outer heat exchange shell 5. An external heat exchange medium inlet 7 and an external heat exchange medium outlet 8 are provided on the side wall of the external heat exchange cavity 6. An internal heat exchange drum 9 is provided inside the inner heat exchange shell 1. Several baffles 22 are evenly distributed around the side wall of the internal heat exchange drum 9.

[0028] Hollow rotating shafts 10 are provided at both ends of the inner heat exchange drum 9. The end faces of the hollow rotating shafts 10 are closed. The hollow rotating shafts 10 are rotatably mounted on the side walls of the inner heat exchange shell 1 and the outer heat exchange shell 5. An inner heat exchange medium inlet pipe 11 passes through one hollow rotating shaft 10, and an inner heat exchange medium outlet pipe 12 passes through the other hollow rotating shaft 10. The inner heat exchange medium inlet pipe 11 and the inner heat exchange medium outlet pipe 12 are connected to the inner heat exchange drum 9. A drive mechanism is connected to the hollow rotating shafts 10.

[0029] The drive mechanism includes a rotary motor 20 fixed to the top of the outer heat exchange housing 5. The output shaft of the rotary motor 20 and the hollow rotating shaft 10 are connected by a chain 21 and a sprocket.

[0030] During operation, slag enters the inner heat exchange shell 1 through the feed pipe 2. The inner heat exchange drum 9 of the inner heat exchange shell 1 rotates continuously under the drive of the rotary motor 20. The baffle disperses and lifts the slag. The inner heat exchange medium introduced into the inner heat exchange drum 9 and the outer heat exchange medium introduced into the outer heat exchange chamber 6 can simultaneously recover and utilize heat. This allows for faster and more efficient recovery of internal heat. When the slag after heat recovery is subjected to other treatments, it will not cause thermal damage to the structure.

[0031] The specific structure of the metallic components contained in the slag after refinement and screening is as follows:

[0032] The bottom of the external heat exchange shell 5 is provided with a slag treatment shell 13 below the discharge pipe 3. The bottom of the slag treatment shell 13 is provided with a slag discharge port 14, and a slag discharge valve 15 is provided on the slag discharge port 14.

[0033] The slag processing shell 13 has symmetrical crushing rollers 16 installed on both sides below the discharge pipe 3. The crushing rollers 16 are connected to crushing motors, and the side walls of the crushing rollers 16 are provided with several crushing teeth 17.

[0034] A magnetic separator is provided inside the slag treatment shell 13 below the middle of the two crushing rollers 16.

[0035] The magnetic separator includes a square magnetic separator 18. One corner of the square magnetic separator 18 is located directly below the middle of the two crushing rollers 16, and the two sides are distributed in a figure-eight shape. An electromagnet 19 is provided inside the square magnetic separator 18, and the electromagnet 19 is connected to an energizing device.

[0036] The two crushing rollers 16 can crush the slag. When the electromagnet 19 is energized, the square magnetic separator 18 can recover the metal entrained in the slag. After the slag is discharged, the electromagnet 19 can be de-energized to recover the metal.

[0037] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A slag recovery device for a smelting furnace, characterized in that, The system includes an inner heat exchange shell (1), with a feed pipe (2) at the top and a discharge pipe (3) at the bottom, a discharge valve (4) on the discharge pipe (3), an outer heat exchange shell (5) outside the inner heat exchange shell (1), an outer heat exchange cavity (6) between the inner heat exchange shell (1) and the outer heat exchange shell (5), an outer heat exchange medium inlet (7) and an outer heat exchange medium outlet (8) on the side wall of the outer heat exchange cavity (6), an inner heat exchange drum (9) inside the inner heat exchange shell (1), hollow rotating shafts (10) at both ends of the inner heat exchange drum (9), the end faces of the hollow rotating shafts (10) being closed, and the hollow rotating shafts (10) rotating and stabilizing. Installed on the side walls of the inner heat exchange shell (1) and the outer heat exchange shell (5), an inner heat exchange medium inlet pipe (11) is inserted through one hollow rotating shaft (10) and an inner heat exchange medium outlet pipe (12) is inserted through another hollow rotating shaft (10). The inner heat exchange medium inlet pipe (11) and the inner heat exchange medium outlet pipe (12) are connected to the inner heat exchange drum (9). The hollow rotating shaft (10) is connected to a drive mechanism. The bottom of the outer heat exchange shell (5) is provided with a slag treatment shell (13) below the discharge pipe (3). The bottom of the slag treatment shell (13) is provided with a slag discharge port (14), and a slag discharge valve (15) is provided on the slag discharge port (14).

2. The slag recovery device for a smelting furnace according to claim 1, characterized in that, The slag treatment shell (13) has symmetrical crushing rollers (16) installed on both sides below the discharge pipe (3). The crushing rollers (16) are connected to crushing motors, and several crushing teeth (17) are provided on the side wall of the crushing rollers (16).

3. The slag recovery device for a smelting furnace according to claim 2, characterized in that, A magnetic separator is provided inside the slag treatment shell (13) below the middle of the two crushing rollers (16).

4. The slag recovery device for a smelting furnace according to claim 3, characterized in that, The magnetic separator includes a square magnetic separator (18), one corner of which is located directly below the middle of the two crushing rollers (16) and the two sides are arranged in a figure-eight shape. An electromagnet (19) is provided inside the square magnetic separator (18), and the electromagnet (19) is connected to an electric power supply device.

5. A slag recovery device for a smelting furnace according to claim 4, characterized in that, The drive mechanism includes a rotary motor (20) fixed on the top of the outer heat exchange housing (5), and the output shaft of the rotary motor (20) and the hollow rotating shaft (10) are connected by a chain (21) and a sprocket.

6. The slag recovery device for a smelting furnace according to claim 5, characterized in that, Several baffles (22) are evenly distributed around the side wall of the inner heat exchange drum (9).

7. A slag recovery device for a smelting furnace according to claim 6, characterized in that, Several connecting support rods (23) are provided between the inner heat exchange shell (1) and the outer heat exchange shell (5).

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