Accurate feeding and conveying system for reducing agent of anode furnace

Abstract

The utility model discloses an accurate feeding and conveying system for an anode furnace reducing agent. The accurate feeding and conveying system comprises a reducing agent storage bin, a feeding mechanism, a blowing tank, a variable-frequency uniform feeder, a conveying pipeline, an anode furnace and a controller, the top end of the feeding mechanism is connected with the reducing agent storage bin, and the bottom end is connected with the injection tank; the variable-frequency uniform feeder is fixedly mounted at the lower end of the injection tank; one end of the conveying pipeline is connected with the bottom end of the variable-frequency uniform feeder, and the other end is connected with the anode furnace; a drying device is arranged in the variable-frequency uniform feeder; the controller is fixedly mounted on the surface of the injection tank and is connected with the reducing agent storage bin, the feeding mechanism, the injection tank and the variable-frequency uniform feeder; according to the variable-frequency uniform feeder, feeding is conducted by controlling the rotary feeder of the variable-frequency uniform feeder, uniform and stable discharging can be achieved, the drying device is arranged in the variable-frequency uniform feeder to dry a reducing agent which is not dried, and the phenomenon that when the reducing agent is conveyed through a conveying pipeline, the reducing agent adheres to the conveying pipeline, and the conveying pipeline is blocked is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting equipment, in particular to an anode furnace reducing agent accurate feeding and conveying system. Background Art

[0002] As a production equipment that requires auxiliary heating, the oxygen combustion technology of the anode furnace has obvious environmental and economic advantages compared with the traditional combustion air combustion. When performing the reduction operation in the anode furnace, it is necessary to add a reducing agent to react in the furnace. The control of the reducing agent plays an important role in the process and cost. The amount of reducing agent used not only affects the process control, but also plays a vital role in the quality of the anode copper product. The reducing agent reacts with the oxygen in the melt to achieve the effect of deoxidation. The existing solid reducing agent for the reduction operation of the anode furnace is pneumatically conveyed by a bottom-discharging silo pump, which only relies on 0.6MPa compressed air to pressurize the silo pump for conveying. The reducing agent feeding is unstable, and this method has uneven feeding. At the same time, due to the large number of turning positions of the reducing agent conveying pipe and the fact that the reducing agent is not dried, the conveying pipeline is frequently blocked when the discharge port of the silo pump is uneven, which affects the operation cycle of the anode furnace and increases the labor intensity of the post. In addition, the current device is not accurate enough in controlling the reducing agent. Research and development of accurate control of the reducing agent to ensure accurate control of the reducing agent can effectively improve the work efficiency of production.

[0003] Patent CN 202021682476.5 discloses a fixed anode furnace reducing agent quantitative feeding device, which belongs to the field of smelting equipment; a feeding pump is installed at the discharge port at the bottom of the silo, and the first cut-off throttle valve, the second cut-off throttle valve, and the third cut-off throttle valve are all connected to the air supply regulating valve through an air duct, and the air supply regulating valve is connected to the fan, and the feeding pump, the first cut-off throttle valve, the second cut-off throttle valve, the third cut-off throttle valve, the air supply regulating valve, and the fan are all connected to the control system. The device can automatically give the reducing agent operation by setting the feeding pump to connect the control system. Controlling the dosage of the reducing agent can reduce costs, reduce the waste of reducing agent, and achieve precise control. However, there are still problems such as many turning positions of the reducing agent delivery pipe, the reducing agent is not dried, and the delivery pipeline is frequently blocked when the material is not discharged evenly at the discharge port of the silo pump. Utility Model Content

[0004] The utility model aims to provide an anode furnace reducing agent precise feeding and conveying system which can discharge the reducing agent evenly and stably and can dry the reducing agent to avoid clogging of the conveying pipeline, so as to solve the technical problem that the conveying pipeline is frequently blocked when the reducing agent is not dried and the discharge at the discharge port is uneven.

[0005] In order to solve the above technical problems, the solution adopted by the utility model is as follows:

[0006] A precise feeding and conveying system for reducing agent of an anode furnace comprises a reducing agent storage bin, a feeding mechanism, a spray tank, a variable frequency uniform feeder, a conveying pipeline, an anode furnace and a controller; the top of the feeding mechanism is connected to the reducing agent storage bin, and the bottom is connected to the spray tank; the variable frequency uniform feeder is fixedly installed at the lower end of the spray tank; one end of the conveying pipeline is connected to the bottom end of the variable frequency uniform feeder, and the other end is connected to the anode furnace, so as to transport the reducing agent from the variable frequency uniform feeder to the anode furnace for reduction reaction; a drying device is provided inside the variable frequency uniform feeder, and the reducing agent is heated and dried by the drying device; the controller is fixedly installed on the surface of the spray tank, and is connected to the reducing agent storage bin, the feeding mechanism, the spray tank and the variable frequency uniform feeder, and the controller is a single chip microcomputer, which controls all components to start and work.

[0007] Furthermore, the feeding mechanism includes a pneumatic vibrating agglomeration machine and a dome valve; the top of the pneumatic vibrating agglomeration machine is connected to the reducing agent storage bin, and the bottom is connected to the dome valve; the dome valve is connected to the top of the spray tank. The pneumatic vibrating agglomeration machine is used to loosen the agglomerated reducing agent and then enter the spray tank through the dome valve for transportation.

[0008] Furthermore, the variable frequency uniform feeder includes a rotary feeder, a ceramic wear-resistant acceleration chamber, an air intake assembly and a feed valve; the top of the rotary feeder is connected to the spray tank, and the bottom is connected to the ceramic wear-resistant acceleration chamber; the air intake assembly is connected to one side of the ceramic wear-resistant acceleration chamber; the feed valve is connected to the lower end of the ceramic wear-resistant acceleration chamber; the feed valve is connected to one end of the conveying pipeline. The reducing agent is conveyed to the rotary feeder through the spray tank for uniform and stable feeding, and the reducing agent is pneumatically conveyed under positive pressure through the ceramic wear-resistant acceleration chamber and the air intake assembly. When the feed valve is opened, the reducing agent can be conveyed to the anode furnace through the conveying pipeline for reaction.

[0009] Furthermore, the drying device is a heating wire; the heating wire is fixedly installed at the connection between the air intake assembly and the ceramic wear-resistant acceleration chamber. After the heating wire is started, the gas entering through the air intake assembly is hot air, and the reducing agent can be dried by the hot air.

[0010] Furthermore, two feeding valves are provided, which are fixedly installed on both sides of the lower end of the ceramic wear-resistant acceleration chamber; two delivery pipes are provided, which are respectively connected to the two feeding valves at the lower end of the ceramic wear-resistant acceleration chamber, and the other ends are connected to the anode furnace. The ceramic wear-resistant acceleration chamber is connected to the two reduction ports of the anode furnace through the two delivery pipes connected to the feeding valves, so that the solid reducing agent can be evenly delivered into the anode furnace.

[0011] The working principle of the utility model is as follows:

[0012] When not in use, the reducing agent is stored in the reducing agent storage bin. When in use, all components are turned on by the controller. After the reducing agent passes through the pneumatic vibration deagglomerator to loosen the agglomerated reducing agent, the dome valve is opened to enter the spray tank and become powder, and then enters the rotary feeder for uniform feeding. The evenly divided reducing agent is pneumatically conveyed by positive pressure through the ceramic wear-resistant acceleration chamber, and the air intake assembly is used to intake and convey the reducing agent. The gas is heated when passing through the heating wire, and the reducing agent in the ceramic wear-resistant acceleration chamber is heated and dried. The dried reducing agent is evenly divided through two feeding valves and then transported to the inside of the anode furnace through a conveying pipeline for reaction.

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

[0014] 1. The utility model controls the rotary feeder of the variable frequency uniform feeder to feed, so as to realize uniform and stable feeding. The undried reducing agent is dried by a drying device provided inside the variable frequency uniform feeder, so as to avoid the reducing agent adhering to the conveying pipeline and clogging the conveying pipeline when the reducing agent is conveyed through the conveying pipeline.

[0015] 2. The utility model is provided with two feeding valves and two conveying pipelines. After the ceramic wear-resistant acceleration chamber is pressurized and gasified, it is evenly distributed through the two feeding valves and connected to the reduction port of the anode furnace through the conveying pipeline, so that the reducing agent can be evenly conveyed to the inside of the anode furnace for reaction.

[0016] 3. The utility model can make the solid reducing agent evenly enter the anode furnace, improve the reducing agent utilization rate, reduce the amount of reducing agent used, reduce the waste of reducing agent, and the overall operation is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 for Figure 1 A is an enlarged schematic diagram of the cross-sectional structure.

[0019] In the figure: 1. Reductant storage bin; 2. Feeding mechanism; 201. Pneumatic vibration deagglomerator; 202. Dome valve; 3. Spray tank; 4. Variable frequency uniform feeder; 401. Rotary feeder; 402. Ceramic wear-resistant acceleration chamber; 403. Air intake assembly; 404. Feeding valve; 405. Heating wire; 5. Conveying pipeline; 6. Anode furnace; 7. Controller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] The following is a further detailed description of the anode furnace reducing agent accurate feeding and conveying system of the utility model in conjunction with the accompanying drawings: Example 1

[0023] A precise feeding and conveying system for anode furnace reducing agent, comprising a reducing agent storage bin 1, a feeding mechanism 2, a spray tank 3, a variable frequency uniform feeder 4, a conveying pipeline 5, an anode furnace 6 and a controller 7; the top of the feeding mechanism 2 is connected to the reducing agent storage bin 1, and the bottom is connected to the spray tank 3; the variable frequency uniform feeder 4 is fixedly installed at the lower end of the spray tank 3; one end of the conveying pipeline 5 is connected to the bottom end of the variable frequency uniform feeder 4, and the other end is connected to the anode furnace 6, for transporting the reducing agent from the variable frequency uniform feeder 4 to the anode furnace 6 for reduction reaction; a drying device is provided inside the variable frequency uniform feeder 4, and the reducing agent is heated and dried by the drying device; the controller 7 is fixedly installed on the surface of the spray tank 3, and is connected to the reducing agent storage bin 1, the feeding mechanism 2, the spray tank 3 and the variable frequency uniform feeder 4.

[0024] The working principle of this embodiment is as follows:

[0025] When not in use, the reducing agent is stored in the reducing agent storage bin 1. When in use, all components are turned on by the controller 7, and the reducing agent enters the spray tank 3 through the feeding mechanism 2 to become powder, and enters the variable frequency uniform feeder 4 for uniform feeding. The drying device heats and dries the reducing agent in the variable frequency uniform feeder 4, and the dried reducing agent is transported to the inside of the anode furnace 6 through the conveying pipe 5 for reaction. Example 2

[0026] The difference from Example 1 is that the feeding mechanism 2 includes a pneumatic vibrating agglomeration machine 201 and a dome valve 202; the top of the pneumatic vibrating agglomeration machine 201 is connected to the reducing agent storage bin 1, and the bottom is connected to the dome valve 202; the dome valve 202 is connected to the top of the spray tank 3. The pneumatic vibrating agglomeration machine 201 is used to loosen the agglomerated reducing agent, and then enter the spray tank 3 through the dome valve 202 to become powder for transportation.

[0027] The working principle of this embodiment is the same as that of Embodiment 1. Example 3

[0028] The difference from Example 1 is that the variable frequency uniform feeder 4 includes a rotary feeder 401, a ceramic wear-resistant acceleration chamber 402, an air intake assembly 403 and a feed valve 404; the top of the rotary feeder 401 is connected to the spray tank 3, and the bottom is connected to the ceramic wear-resistant acceleration chamber 402; the air intake assembly 403 is connected to one side of the ceramic wear-resistant acceleration chamber 402; there are two feed valves 404, which are fixedly installed on both sides of the lower end of the ceramic wear-resistant acceleration chamber 402; the conveying pipeline 5 is provided with two, which are respectively connected to the two feed valves 404 at the lower end of the ceramic wear-resistant acceleration chamber 402, and the other end is connected to the anode furnace 6. The drying device is a heating wire 405; the heating wire 405 is fixedly installed at the connection between the air intake assembly 403 and the ceramic wear-resistant acceleration chamber 402. The reducing agent is conveyed to the rotary feeder 401 through the spray tank 3 for uniform and stable feeding, the heating wire 405 is started, and the gas entering through the air intake component 403 is hot air, which can dry the reducing agent; the reducing agent is pneumatically conveyed under positive pressure through the ceramic wear-resistant acceleration chamber 402 and the air intake component 403, and the two feeding valves 404 are opened to convey the reducing agent to the anode furnace 6 through the two conveying pipes 5 and the two reduction ports of the anode furnace 6 for reaction.

[0029] The working principle of this embodiment is the same as that of Embodiment 1.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anode furnace reducing agent accurate feeding and delivery system, characterized by: The invention comprises a reducing agent storage bin (1), a feeding mechanism (2), a spray tank (3), a variable frequency uniform feeder (4), a conveying pipeline (5), an anode furnace (6) and a controller (7); the top of the feeding mechanism (2) is connected to the reducing agent storage bin (1), and the bottom of the feeding mechanism (2) is connected to the spray tank (3); the variable frequency uniform feeder (4) is fixedly mounted at the lower end of the spray tank (3); one end of the conveying pipeline (5) is connected to the bottom end of the variable frequency uniform feeder (4), and the other end is connected to the anode furnace (6); a drying device is arranged inside the variable frequency uniform feeder (4); the controller (7) is fixedly mounted on the surface of the spray tank (3), and is connected to the reducing agent storage bin (1), the feeding mechanism (2), the spray tank (3) and the variable frequency uniform feeder (4).

2. The anode furnace reducing agent precise feeding and delivery system according to claim 1, characterized in that: The feeding mechanism (2) comprises a pneumatic vibrating agglomerate breaker (201) and a dome valve (202); the top end of the pneumatic vibrating agglomerate breaker (201) is connected to the reducing agent storage bin (1), and the bottom end is connected to the dome valve (202); the dome valve (202) is connected to the top end of the spray tank (3).

3. The anode furnace reducing agent precise feeding and delivery system according to claim 1, characterized in that: The variable frequency uniform feeder (4) comprises a rotary feeder (401), a ceramic wear-resistant acceleration chamber (402), an air intake assembly (403) and a feed valve (404); the top end of the rotary feeder (401) is connected to the spray tank (3), and the bottom end is connected to the ceramic wear-resistant acceleration chamber (402); the air intake assembly (403) is connected to one side of the ceramic wear-resistant acceleration chamber (402); the feed valve (404) is connected to the lower end of the ceramic wear-resistant acceleration chamber (402); and the feed valve (404) is connected to one end of the conveying pipeline (5).

4. The anode furnace reducing agent accurate feeding and delivery system according to claim 3, characterized in that: The drying device is a heating wire (405); the heating wire (405) is fixedly installed at the connection between the air intake component (403) and the ceramic wear-resistant acceleration chamber (402).

5. The anode furnace reducing agent precise feeding and delivery system according to claim 3, characterized in that: Two feeding valves (404) are provided, which are fixedly installed on both sides of the lower end of the ceramic wear-resistant acceleration chamber (402); two conveying pipes (5) are provided, which are respectively connected to the two feeding valves (404) at the lower end of the ceramic wear-resistant acceleration chamber (402), and the other ends are connected to the anode furnace (6).

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