Flux injection device of tilting furnace

Abstract

The utility model relates to the technical field of metallurgical chemical industry, in particular to a tilting furnace flux blowing device which comprises a feeding hopper, a flux bin, an ejector and a tilting furnace, the feeding hopper, the flux bin, the ejector and the tilting furnace are sequentially connected through pipelines, valves are arranged on the connecting pipelines, and the feeding hopper comprises a bag breaking cross and a conical hopper. The bag breaking cross is located above the right middle of the conical hopper and composed of four pieces of triangular carbon structural steel, and the flux bin comprises a feeding telescopic joint, a feeding port butterfly valve, a pressure balance air pipe, a flux bin body, a flux conveying air pipe, a discharging telescopic joint and a discharging port pneumatic valve. The conveying air pressure of the two parallel air inlets converges and is enhanced in the ejector cavity, so that the kinetic energy of the conveyed melt can be enhanced, the injection effect of the flux is achieved through the small conveying air pressure, the flux smoothly enters the melt to react, the metallurgical effect of the flux and the melt is enhanced, and the utilization rate of the flux is increased.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical and chemical technology, and in particular to a flux injection device for a tilting furnace. Background Technology

[0002] Tilting furnaces are among the best furnace types for processing scrap copper, enabling efficient recovery of secondary copper resources and freeing the copper industry from the constraints imposed by insufficient mineral copper resources.

[0003] The existing method of charging flux in tilting furnaces uses a DDS feeder for centralized mechanical charging. This charging method is prone to flux agglomeration and uneven dispersion in the furnace, resulting in poor interaction with the melt and low flux utilization. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tilting furnace flux injection device, which solves the technical problem that the existing tilting furnace flux feeding method uses a DDS feeder for centralized mechanical feeding, which easily leads to flux agglomeration, uneven dispersion in the furnace, low interaction with the melt, and low flux utilization.

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

[0006] A tilting furnace flux injection device includes a feeding hopper, a flux bin, an injector, and a tilting furnace. The feeding hopper, flux bin, injector, and tilting furnace are connected sequentially by pipes, and each connecting pipe is equipped with a valve. The feeding hopper includes a bag-breaking cross and a conical hopper. The bag-breaking cross is located above the center of the conical hopper and is composed of four triangular carbon structural steel pieces. The flux bin includes a feed expansion joint, a feed inlet butterfly valve, a pressure balancing air pipe, a flux bin body, a flux delivery air pipe, a discharge expansion joint, and a discharge outlet pneumatic valve. Three weighing sensors are installed at 120° intervals around the flux delivery air pipe in the middle of the flux bin body. The injector includes an air inlet, an injector body, and an output port. The air inlet and output port are connected to both ends of the injector body.

[0007] Preferably, the top of the conical hopper connected to the bag-breaking cross is in an open state, and the four inclined sides of the bag-breaking cross are connected to the edge of the conical hopper through a steel frame.

[0008] Preferably, both the feed expansion joint and the discharge expansion joint are made of stainless steel flexible hoses and are vertically connected to the feed inlet butterfly valve and the discharge outlet pneumatic valve, respectively.

[0009] Preferably, both the air inlet and the air outlet have two branches, which operate independently and are in parallel.

[0010] Preferably, the injector body has two chambers, which are connected in the middle and connected to the pneumatic valve at the discharge port through a pipe.

[0011] Preferably, the air inlet delivery pressure is 0.2~0.35MPa.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The flux chamber of this invention is equipped with a weighing sensor, which can monitor the dynamic changes in the mass of the flux chamber and achieve precise and controllable flux feeding. The flux chamber is also equipped with a flux delivery air pipe and a pneumatic valve at the discharge port, which can adjust the opening and closing degree of the flux discharge and ensure that the fluidized flux obtains sufficient kinetic energy to prevent the flux from clogging during the discharge process.

[0014] The injector of this invention adopts a dual-pipe parallel delivery system. The air inlet and outlet are connected to both ends of the injector cavity. The air pressure delivered by the two parallel air inlets converges and strengthens in the injector cavity, which can enhance the kinetic energy of the conveyed melt. The flux is sprayed with a smaller delivery air pressure, allowing it to smoothly enter the melt for reaction, strengthening the metallurgical interaction between the flux and the melt, and improving the flux utilization rate. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the feeding hopper structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the flux bin structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the injector structure of this utility model.

[0020] Legend: 1. Feed hopper; 2. Flux bin; 3. Injector; 4. Tilting furnace; 5. Bag breaking cross; 6. Conical hopper; 7. Feed expansion joint; 8. Feed port butterfly valve; 9. Pressure balancing air pipe; 10. Flux bin body; 11. Weighing sensor; 12. Flux conveying air pipe; 13. Discharge expansion joint; 14. Discharge port pneumatic valve; 15. Air inlet; 16. Injector body; 17. Output port. Detailed Implementation

[0021] This application provides a flux injection device for a tilting furnace, which effectively solves the problem of the existing tilting furnace flux feeding method using a DDS feeder for centralized mechanical feeding. This feeding method is prone to flux agglomeration and uneven dispersion in the furnace, resulting in poor interaction with the melt and low flux utilization. The injector part of this utility model adopts a dual-pipe parallel conveying system, with the air inlet and outlet connected to both ends of the injector cavity. The air pressure delivered by the two parallel air inlets converges and strengthens in the injector cavity, which can enhance the kinetic energy of the conveyed melt. The flux is injected with a smaller conveying air pressure, allowing it to smoothly enter the melt for reaction, strengthening the metallurgical interaction between the flux and the melt, and improving flux utilization. Example

[0022] like Figure 1-4As shown, the technical solution in this application embodiment effectively solves the technical problem that the existing tilting furnace flux feeding method uses a DDS feeder for centralized mechanical feeding, which easily leads to flux agglomeration, uneven dispersion in the furnace, and low interaction with the melt, resulting in low flux utilization. The overall idea is as follows: A tilting furnace flux blowing device includes a feeding hopper 1, a flux bin 2, an injector 3, and a tilting furnace 4. The feeding hopper 1, flux bin 2, injector 3, and tilting furnace 4 are connected sequentially by pipes, and valves are installed on the connecting pipes. The feeding hopper 1 includes a bag-breaking crossbar 5 and a conical hopper 6. The bag-breaking crossbar 5 is located at the conical hopper. Above the center of the conical hopper 6, the bag-breaking crossbar 5 is composed of four triangular carbon structural steel pieces. The flux chamber 2 includes an inlet telescopic joint 7, an inlet butterfly valve 8, a pressure balancing air pipe 9, a flux chamber body 10, a flux conveying air pipe 12, an outlet telescopic joint 13, and an outlet pneumatic valve 14. Three weighing sensors 11 are installed at 120° intervals around the flux conveying air pipe 12 in the center of the flux chamber body 10. The ejector 3 includes an air inlet 15, an ejector body 16, and an outlet 17. The air inlet 15 and the outlet 17 are connected to both ends of the ejector body 16. The top of the conical hopper 6, which is connected to the bag-breaking crossbar 5, is open. The four hypotenuses of the cross 5 are connected to the edge of the conical hopper 6 via a steel frame. The feed expansion joint 7 and discharge expansion joint 13 are both made of stainless steel flexible hoses, vertically connected to the feed inlet butterfly valve 8 and the discharge outlet pneumatic valve 14, respectively. Both the air inlet 15 and the output port 17 have two branches, operating independently and in parallel. The injector body 16 has two corresponding chambers, connected in the middle and linked to the discharge outlet pneumatic valve 14 via a pipe. The air inlet 15 delivers a pressure of 0.2~0.35MPa. Pressure gauges and flow meters are installed before and after the valves on the pressure balancing air pipe 9 and the flux delivery air pipe 12. A flow meter is installed at the front end of the pipeline valve. Two output ports 17 are connected to the air duct position of the tilting furnace 4. When the flux is sprayed, the trolley unloads the flux bag to the bag breaking cross 5. After the flux falls into the feeding hopper 1, the valve connected to the flux bin 2 is opened. The weighing sensor 11 inside the flux bin 2 works to weigh the flux. When the weight of the flux in the bin reaches the set value, the valve at the pipeline connecting the discharge port pneumatic valve 14 and the injector body 16 is opened. At the same time, the valve of the main pipeline of the air inlet 15 is opened. The pressure gauge reading is 0.25 MPa. The airflow in the injector cavity passes through and transports the flux in the pipeline of the discharge port pneumatic valve 14 to the tilting furnace 4, completing the flux spraying.

[0023] To address the problems existing in the prior art, this utility model provides a tilting furnace flux injection device. The injector part of this utility model adopts a dual-pipe parallel conveying system, with the air inlet and outlet connected to both ends of the injector cavity. The air pressure delivered by the two parallel air inlets converges and strengthens in the injector cavity, which can enhance the kinetic energy of the conveyed melt. The flux injection effect is achieved with a relatively small conveying air pressure, allowing it to smoothly enter the melt for reaction, strengthening the metallurgical interaction between the flux and the melt, and improving the flux utilization rate.

[0024] Working principle:

[0025] During flux injection, the overhead crane unloads the flux bag to the bag-breaking crossbar 5. After the flux falls into the feeding hopper 1, the valve connected to the flux chamber 2 is opened. The weighing sensor 11 inside the flux chamber 2 works to weigh the flux. When the weight of the flux in the chamber reaches the set value, the valve at the pipeline connecting the outlet pneumatic valve 14 and the injector body 16 is opened. At the same time, the valve of the main pipeline of the air inlet 15 is opened. The pressure gauge reading is 0.25 MPa. The airflow in the injector cavity passes through and transports the flux in the pipeline of the outlet pneumatic valve 14 to the tilting furnace 4, completing the flux injection.

[0026] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A tilting furnace flux injection device, comprising a feeding hopper (1), a flux bin (2), an injector (3), and a tilting furnace (4), wherein the feeding hopper (1), the flux bin (2), the injector (3), and the tilting furnace (4) are connected in sequence by pipes, and each connecting pipe is equipped with a valve, characterized in that, The feeding hopper (1) includes a bag-breaking cross (5) and a conical hopper (6). The bag-breaking cross (5) is located above the center of the conical hopper (6). The bag-breaking cross (5) is made of four triangular carbon structural steel pieces. The flux tank (2) includes a feeding telescopic joint (7), a feeding port butterfly valve (8), a pressure balancing air pipe (9), a flux tank body (10), a flux conveying air pipe (12), a discharge telescopic joint (13), and a discharge port pneumatic valve (14). Three weighing sensors (11) are installed at 120° intervals around the flux conveying air pipe (12) in the middle of the flux tank body (10). The injector (3) includes an air inlet (15), an injector body (16), and an output port (17). The air inlet (15) and the output port (17) are connected to both ends of the injector body (16).

2. The tilting furnace flux injection device as described in claim 1, characterized in that, The top of the conical hopper (6) connected to the bag-breaking cross (5) is open, and the four oblique sides of the bag-breaking cross (5) are connected to the edge of the conical hopper (6) through a steel frame.

3. The tilting furnace flux injection device as described in claim 1, characterized in that, The feed expansion joint (7) and the discharge expansion joint (13) are both made of stainless steel hoses and are vertically connected to the feed inlet butterfly valve (8) and the discharge outlet pneumatic valve (14), respectively.

4. The tilting furnace flux injection device as described in claim 1, characterized in that, Both the air inlet (15) and the air outlet (17) have two branches, which operate independently and are in parallel.

5. The tilting furnace flux injection device as described in claim 3, characterized in that, The injector body (16) has two chambers, which are connected in the middle and connected to the pneumatic valve (14) at the discharge port through a pipe.

6. The tilting furnace flux injection device as described in claim 4, characterized in that, The air inlet (15) delivers a pressure of 0.2~0.35MPa.

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