Anode Manufacturing plant

Kilns and furnaces for anode active material production in LIB industry

Equipment: pusher kiln, roller hearth kiln, and rotary kiln.

Capacity: customization

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In recent years, lithium battery becomes hot, and the two necessary components – anode material and cathode material are also popular on the market.

AGICO offers integrated solutions for anode material production and cathode material manufacturing plant. As a professional kiln system service provider, we can provide industrial kilns and related automation equipment. We are a comprehensive engineering company that integrates process design, equipment supply, technical guidance, and maintenance services.

Our kiln is suitable for lithium battery anode materials, honeycomb ceramics, 5G communication, electronic ceramics, magnetic materials, alumina, zirconia and other materials pre-burning, rubber discharge, firing, drying, heat treatment, curing, ceramic metallization and other processes.

artificial graphite

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furnace for anode preparation

We can supply the full range of process equipment for every section of anode material production, including crushing, mixing, granulation, carbonization, graphitization, screening, and other necessary steps. As for the core equipment – calcination kilns or furnaces used in the anode material production line, there are three main types of calcination kilns to be chosen: pusher kiln, roller hearth kiln, and rotary kiln.

roller hearth kiln
pusher kiln
pusher kiln
rotary furnace
rotary furnace
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advantages of anode material preparation machine

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Energy saving
Large capacity
Easy to operate
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Turnkey solution for Anode production

Speaking of lithium electronic battery anode material production process, we have to mention the types of anode materials. In general, there are many types of anode materials, including natural graphite materials, artificial graphite materials, coke, hard carbon, etc., the future to be developed in mass production such as silicon carbon composite materials, graphene materials. Artificial graphite and natural graphite accounts for more than 90% of market share among all types of anode mateials.

Our lithium battery anode material process takes artificial graphite as an example, granulation and graphitization are the core links of artificial graphite preparation, and the pretreatment (crushing) and screening processes are relatively simple.

  1. Crushing section: the artificial graphite are crushed by crushers, average particle size requirements of 15 to 25 microns.
  2. Mixing process: at room temperature conditions, put crushed artificial graphite raw materials, hole additives, asphalt (3%) and flake graphite into the mechanical mixer according to a certain proportion, then fully mechanical mixing, set proper mixing time and make all materials are evenly mixed.
  3. Granulation process: after mixing, load the material into the granulator, electric heating is performed according to the temperature curve, Firstly, it is dried at a temperature of 150°C for 2h (to remove the moisture in the raw material), then stirred at 350-400°C for 2h (to ensure that the temperature is uniform throughout the material), next, heated to about 800°C for 1.5h.
  4. Carbonization process: The mixed material prepared in the first step is transferred into the tunnel kiln, first treated in inert gas (nitrogen) at 200-300°C, and then continued heat treatment to heat up to 700-1200°C to obtain carbonized material, and then crushed, screened and shaped to obtain spherical carbonized material. Bitumen is completely converted to carbon within 1000°C. Nitrogen protection because it is slowly input through the upper transmission pipe of the tunnel kiln under normal pressure, there is no safety problem of nitrogen gas pressure.
  5. Graphitizing: The spherical carbonized material is placed in the graphitization furnace protected by inert gas (nitrogen) to purify the graphitization material, and the graphitization treatment temperature is within the range of 2800 °C.
  6. Screening: the graphitized material is screened to obtain lithium ion battery anode material.
anode material preparation
carbonization system
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Why do we invest in Anode material production?

Benefiting from the rapid development of new energy vehicles and energy storage markets, the demand for lithium batteries is soaring. As one of the important raw materials for lithium-ion batteries, the reversible reaction ability of lithium ion and anode material determines the energy storage effect of lithium ion battery, and the improvement of the performance of lithium ion battery depends on the improvement of the performance of anode material to a certain extent.

lithium ion cell components

As we all know, Lithium-ion batteries are mainly composed of cathode material, anode material, diaphragm, electrolyte, and battery shell. In the charging process, the anode material constantly reacts with lithium ions, “captures and stores” lithium ions, and also stores external work in the form of energy in the battery. During the discharge of the battery, lithium ions are transferred from the anode electrode to the cathode electrode, and the battery does work externally. The anode material directly affects the performance of the battery, including key parameters such as energy density, power density, cycle life and safety.

Anode materials cost account for less than 15% of the lithium-ion battery cost. The four main materials of lithium-ion batteries are cathode materials, anode materials, electrolyte and diaphragm, and their cost accounts for about 40%, 15%, 15% and 30%, respectively.

lithium ion battery market

The successful cases of anode preparation machines

Based on high quality and advanced technology, more than 660 sets of furnaces have been delivered throughout the country and exported to the United States, South Korea, Japan, Vietnam and other places, winning high praise from customers.

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