Roasting equipment for lithium iron phosphate processing

Abstract

The utility model relates to the field of lithium iron phosphate processing devices, in particular to roasting equipment for processing lithium iron phosphate, and aims to solve the technical problems that the conventional roasting equipment for processing lithium iron phosphate does not have a waste heat treatment function, so that a large amount of heat energy contained in waste gas is wasted. According to the technical scheme, the roasting equipment for lithium iron phosphate processing comprises a supporting frame, a reaction kettle, a stirring assembly, a heating assembly, a ventilation assembly and a waste heat treatment assembly; according to the roasting equipment for processing the lithium iron carbonate, the waste heat assembly is additionally arranged on the existing roasting equipment for processing the lithium iron carbonate, waste gas generated in the lithium iron carbonate processing process is collected and utilized, water in the water pipe is heated by utilizing the waste gas with heat, and the heated water is supplied to a bathhouse for use, so that energy is saved, and the environment is protected. The problem that a large amount of heat energy contained in waste gas is wasted due to the fact that existing lithium iron carbonate processing roasting equipment does not have the waste heat treatment function is solved.

Description

Technical Field

[0001] The utility model belongs to the field of lithium iron phosphate processing devices, and specifically relates to a baking device for lithium iron phosphate processing. Background Art

[0002] Lithium iron phosphate material, which has the advantages of high capacity, low price, no environmental pollution, good safety and thermal stability, is a common material for lithium-ion power batteries. In order to improve the electrochemical properties and cycle life of lithium iron phosphate, manufacturers often use roasting equipment to process lithium iron phosphate using a high-temperature solid-phase method.

[0003] At present, lithium iron carbonate roasting equipment needs to use a higher temperature when adopting the high-temperature solid-phase method. After the lithium iron phosphate processing is completed, it will contain a large amount of waste gas with heat. The existing lithium iron carbonate roasting equipment does not have the waste heat treatment function, resulting in waste of heat energy.

[0004] Therefore, since the existing lithium iron phosphate processing roasting equipment does not have the function of processing waste heat from waste gas containing a large amount of heat, the existing lithium iron phosphate processing roasting equipment is improved by adding waste heat treatment equipment to heat water using the waste heat from the waste gas to fully utilize the thermal energy. Utility Model Content

[0005] In order to overcome the problem that the existing lithium iron carbonate processing and roasting equipment does not have the waste heat treatment function, resulting in a large amount of heat energy contained in the exhaust gas being wasted.

[0006] The technical solution of the utility model is: a roasting equipment for lithium iron phosphate processing, including a support frame, a reactor, a stirring component, a heating component, a ventilation component, and a waste heat treatment component; a reactor is installed on the support frame, a stirring component is arranged in the reactor, a heating component for changing the temperature of the contents in the reactor is installed in the reactor, a ventilation component is installed outside the reactor, and the ventilation component is connected to the waste heat treatment component.

[0007] Preferably, by adding a waste heat treatment component to the existing lithium iron phosphate processing roasting equipment, the excess heat in the exhaust gas can be collected and used through the waste heat treatment component to reduce the waste of thermal energy resources. The stirring component can ensure uniform heating in the reactor, the heating component heats the inside of the reactor, and the ventilation component is used to discharge the exhaust gas.

[0008] Preferably, a kettle cover is installed on the front side of the reactor, and a rotating shaft is fixedly connected to the front side of the kettle cover. The rotating shaft is inserted into the front side of the reactor. The kettle cover is opened by rotating the rotating shaft, which makes it convenient for the staff to put the iron source, lithium source and phosphorus source mixed in a certain proportion into the reactor.

[0009] Preferably, the stirring assembly includes a stirring shaft and a motor; a stirring shaft with a stirring block connected to the outside is inserted into the reactor, and a motor with a transmission element connected to the stirring shaft is installed on the rear side of the reactor. After the motor is started, it drives the stirring shaft to rotate, and the stirring blades spread out the raw materials accumulated in the reactor to facilitate uniform heating of the raw materials.

[0010] Preferably, the heating component includes an electric heating rod and an air injection port; an air injection port is provided on the right side of the reactor, an air intake pipe is plugged into the air injection port, and three electric heating rods are equidistantly arranged on the left and right sides of the reactor. The nitrogen required for lithium iron phosphate processing is injected into the reactor through the air injection port, the electric heating rod heats the nitrogen in the reactor, and cooperates with the stirring component to produce lithium iron phosphate by a high-temperature solid-phase method.

[0011] Preferably, the ventilation assembly includes an exhaust fan and a filter; an exhaust fan connected to the reactor through an exhaust duct is arranged on the left side of the reactor, and a filter is installed in the exhaust fan. The exhaust fan extracts the gas in the reactor, and the filter filters out the dust impurities contained in the exhaust gas.

[0012] Preferably, the waste heat treatment component includes a waste heat box and a water pipe; a waste heat box is arranged at the other end of the exhaust fan, and five water pipes arranged in a ring are inserted into the waste heat box. The filtered exhaust gas enters the waste heat box, and water flows through the water pipes. Heat is transferred from the high-temperature gas to the lower-temperature water to heat the water.

[0013] Preferably, a hot air duct is connected between the waste heat box and the exhaust fan, and the outside of the hot air duct is wrapped with aluminum silicate fiber insulation cotton. The insulation cotton wrapped in the hot air duct can have an insulation effect, insulate the exhaust gas in the hot air duct, reduce the temperature loss during hot gas transportation, and improve the efficiency of waste heat utilization.

[0014] Beneficial effects of the utility model:

[0015] By adding a waste heat component to the existing lithium iron carbonate processing roasting equipment, the waste gas generated during the processing of lithium iron carbonate is collected and utilized, and the hot waste gas is used to heat the water in the water pipe, and the heated water is supplied to the bathhouse for use. This design makes full use of the large amount of hot waste gas generated during the processing of lithium iron carbonate, saving energy;

[0016] The motor drives the stirring shaft to rotate, and the stirring blades drive the materials in the reactor to stir, so that the internal materials are evenly heated, preventing the internal materials from being heated unevenly, which leads to a decrease in the lithium iron phosphate processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 What is shown is a schematic diagram of the first three-dimensional structure of the calcining equipment for processing lithium iron phosphate of the utility model;

[0018] Figure 2 The second three-dimensional structure schematic diagram of the calcining equipment for processing lithium iron phosphate of the utility model is shown;

[0019] Figure 3 The three-dimensional structure diagram of the stirring assembly of the calcining equipment for processing lithium iron phosphate of the utility model is shown;

[0020] Figure 4 The three-dimensional structure diagram of the heating assembly of the calcining equipment for processing lithium iron phosphate of the utility model is shown;

[0021] Figure 5 What is shown is a three-dimensional structural schematic diagram of the ventilation assembly of the calcining equipment for lithium iron phosphate processing of the utility model;

[0022] Figure 6 What is shown is a three-dimensional structural schematic diagram of the waste heat treatment component of the calcining equipment for lithium iron phosphate processing of the utility model.

[0023] Explanation of the reference numerals: 1. support frame; 2. reactor; 3. reactor cover; 401. stirring shaft; 402. motor; 501. electric heating rod; 502. air injection port; 601. exhaust fan; 602. filter; 701. waste heat box; 702. water pipe; 8. hot air duct. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-2 The utility model provides an embodiment: a calcining device for processing lithium iron phosphate includes a support frame 1, a reactor 2, a stirring component, a heating component, a ventilation component, and a waste heat treatment component; the reactor 2 is installed on the support frame 1, the reactor 2 is provided with a stirring component, the reactor 2 is provided with a heating component for changing the temperature of the content in the reactor 2, the outside of the reactor 2 is installed with a ventilation component, and the ventilation component is connected to the waste heat treatment component. By adding a waste heat treatment component to the existing calcining device for processing lithium iron phosphate, the excess heat in the waste gas is collected and used through the waste heat treatment component, thereby reducing the waste of thermal energy resources, the stirring component can ensure that the reactor 2 is evenly heated, the heating component heats the inside of the reactor 2, and the ventilation component is used to discharge the waste gas.

[0026] See also Figure 3-4In this embodiment, a kettle cover 3 is installed on the front side of the reactor 2, and a rotating shaft is fixedly connected to the front side of the kettle cover 3, and the rotating shaft is plugged into the front side of the reactor 2. The stirring assembly includes a stirring shaft 401 and a motor 402; a stirring shaft 401 with a stirring block connected to the outside is plugged into the reactor 2, and a motor 402 with a transmission element connected to the stirring shaft 401 is installed on the rear side of the reactor 2. The kettle cover 3 is opened by rotating the rotating shaft, which is convenient for the staff to put the iron source, lithium source and phosphorus source mixed in a certain proportion into the reactor 2. After the motor 402 is started, it drives the stirring shaft 401 to rotate, and the stirring fan blades spread the raw materials accumulated in the reactor 2, so that the raw materials are heated evenly.

[0027] See also Figure 4-6 In this embodiment, the heating component includes an electric heating rod 501 and an air injection port 502; an air injection port 502 is provided on the right side of the reactor 2, and an air intake pipe is inserted into the air injection port 502. Three electric heating rods 501 arranged equidistantly are inserted on the left and right sides of the reactor 2. The ventilation component includes an exhaust fan 601 and a filter screen 602; an exhaust fan 601 connected to the reactor 2 through an exhaust pipe is provided on the left side of the reactor 2, and a filter screen 602 is installed in the exhaust fan 601. The waste heat treatment component includes a waste heat box 701 and a water pipe 702; a waste heat box 701 is provided at the other end of the exhaust fan 601, and five water pipes 702 arranged in a ring are inserted in the waste heat box 701. A hot air pipe 8 is connected between the waste heat box 701 and the exhaust fan 601. The hot air The outside of the pipe 8 is wrapped with aluminum silicate fiber insulation cotton. The nitrogen required for lithium iron phosphate processing is injected into the reactor 2 through the air injection port 502. The electric heating rod 501 heats the nitrogen in the reactor 2. In conjunction with the stirring component, lithium iron phosphate is produced by a high-temperature solid phase method. The exhaust fan 601 extracts the gas in the reactor 2, and the filter 602 filters out the dust impurities contained in the exhaust gas. The filtered exhaust gas enters the waste heat box 701. At the same time, water flows through the water pipe 702. Heat is transferred from the high-temperature gas to the water with a lower temperature to heat the water. The insulation cotton wrapped around the hot air pipe 8 can have a heat-insulating effect, insulate the exhaust gas in the hot air pipe 8, reduce the temperature loss during hot gas transportation, and improve the efficiency of waste heat utilization.

[0028] When working, first, the staff puts the iron source, lithium source and phosphorus source mixed in a certain proportion into the reactor 2, inserts the pipeline into the air injection port 502, opens the valve, and injects nitrogen into the reactor 2. After a period of time, the reactor cover 3 is rotated to close, and the electric heating rod 501 is started. The electric heating rod 501 heats the nitrogen inside, and the motor 402 is started. The stirring shaft 401 starts to rotate, driving the raw materials inside to spread out, ensuring that the raw materials inside are evenly heated;

[0029] After the lithium iron phosphate processing is completed, the exhaust fan 601 is started to extract the exhaust gas in the reactor 2. When the exhaust gas passes through the filter 602, the dust contained inside is retained on the filter 602, and the gas passes through the filter 602 and the hot air duct 8 into the waste heat box 701. The valve on the water pipe 702 is opened, and the water passes through the waste heat box 701 along the water pipe 702. The heat contained in the exhaust gas is transferred to the internal water through the water pipe 702, thereby increasing the temperature of the internal water and realizing the rational use of waste heat.

[0030] Through the above steps, a waste heat component is added to the existing lithium iron carbonate processing and roasting equipment, the waste gas generated in the process of processing lithium iron carbonate is collected and utilized, the waste gas with heat is used to heat the water in the water pipe 702, and the heated water is supplied to the bathhouse for use. This design makes full use of the large amount of waste gas with heat generated by the processing of lithium iron carbonate, saves energy, and solves the problem that the existing lithium iron carbonate processing and roasting equipment does not have a waste heat treatment function, resulting in a large amount of heat energy contained in the waste gas being wasted.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A calcination device for processing lithium iron phosphate, comprising a support frame (1) and a reaction kettle (2); characterized in that: It also includes a stirring component, a heating component, a ventilation component, and a waste heat treatment component; a reaction kettle (2) is mounted on the support frame (1), a stirring component is arranged in the reaction kettle (2), a heating component for changing the temperature of the contents in the reaction kettle (2) is mounted in the reaction kettle (2), a ventilation component is mounted outside the reaction kettle (2), and the ventilation component is connected to the waste heat treatment component.

2. A calcination equipment for lithium iron phosphate processing according to claim 1, characterized in that: A kettle cover (3) is installed on the front side of the reaction kettle (2), and a rotating shaft is fixedly connected to the front side of the kettle cover (3), and the rotating shaft is plugged into the front side of the reaction kettle (2).

3. A calcination equipment for lithium iron phosphate processing according to claim 1, characterized in that: The stirring assembly comprises a stirring shaft (401) and a motor (402); the stirring shaft (401) with a stirring block connected to the outside is inserted into the reaction kettle (2), and the motor (402) with a transmission element connected to the stirring shaft (401) is installed on the rear side of the reaction kettle (2).

4. The calcination equipment for lithium iron phosphate processing according to claim 1, characterized in that: The heating component comprises an electric heating rod (501) and an air injection port (502); the air injection port (502) is provided on the right side of the reaction kettle (2), an air intake pipe is inserted into the air injection port (502), and three electric heating rods (501) arranged at equal distances are inserted on both the left and right sides of the reaction kettle (2).

5. The calcination equipment for lithium iron phosphate processing according to claim 1, characterized in that: The ventilation assembly comprises an exhaust fan (601) and a filter (602); an exhaust fan (601) connected to the reaction kettle (2) via an exhaust pipe is arranged on the left side of the reaction kettle (2), and a filter (602) is installed in the exhaust fan (601).

6. The calcination equipment for lithium iron phosphate processing according to claim 1, characterized in that: The waste heat treatment component comprises a waste heat box (701) and a water pipe (702); the waste heat box (701) is arranged at the other end of the exhaust fan (601), and five water pipes (702) arranged in a ring are inserted into the waste heat box (701).

7. A calcination equipment for processing lithium iron phosphate according to claim 6, characterized in that: A hot air duct (8) is connected between the waste heat box (701) and the exhaust fan (601), and the outside of the hot air duct (8) is wrapped with aluminum silicate fiber insulation cotton.

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