Secondly, regarding the choice of spherical graphite processing equipment.
(1) The air flow vortex crusher is widely used in the spherical process, which has both the crushing performance and the effect of chamfering. In addition, the quality of the grading equipment will directly affect the yield of spheroidized graphite and the control of the technical indicators of spheroidal graphite, so attention should be paid to the selection.
(2) The purity requirements of graphite anode materials used in lithium ion batteries are often above 99.95%. Therefore, the purification process is essential and crucial in the entire production process. At present, the production of high-purity spherical graphite is generally produced by chemical purification methods. The chemical raw materials used are all strong acid substances, so the purification equipment must be acid-resistant and corrosion-resistant equipment. At the same time, because the chemical purification is done at a certain temperature, the equipment also has a certain high temperature resistance.
(3) After the chemical reaction is completed, the impurities in the spherical graphite are dissolved in the reaction solution, and the impurities can be taken away only by washing. The washing equipment used in the process is mainly two kinds of filter press and centrifuge. The advantages of the filter press are high recovery rate, less running material, low labor intensity, safety and easy operation. The disadvantage is that the washing effect is relatively poor, and there is no dead angle to wash. The advantage of the centrifuge is that the washing is sufficient and the effect is good, but the disadvantages are also more, such as more running material, greater waste, labor intensity at the time of discharge, safety and ease of inferiority to the filter press, and more waste of water. It is effective to use the two together.
(4) Dry the spherical graphite after purification and washing to remove moisture, and control the moisture below 0.5%. In the drying process, the most prone problem is secondary pollution, that is, the spherical graphite becomes unqualified due to the inclusion of impurities after drying, mainly manifested as unqualified indicators of carbon content and trace elements. More drying equipment is used, including drying kiln, microwave dryer and drying furnace.
Spherical graphite application fields
Batteries and energy storage: This is one of the most important application areas for spherical graphite. In battery manufacturing, spherical graphite is used as anode material, which can provide good conductivity and charge and discharge performance, thus improving the battery's energy density and cycle life. Spherical graphite is increasingly used, especially in new energy vehicles and portable equipment.
Metallurgical field: Spherical graphite has high-temperature resistance and chemical stability, so it is widely used in the metallurgical field. It is used to manufacture high-purity graphite crucibles, molds, electrodes, etc. These graphite products have good thermal conductivity and chemical stability at high temperatures, which can ensure the smooth progress of metal smelting and processing.
Semiconductor industry: Spherical graphite has excellent thermal conductivity and electrical properties, so it is widely used in semiconductors. It is used to manufacture graphite heat sinks, reactors, and films. These graphite products can provide good thermal conductivity and electrical properties, ensuring thermal control and stable electrical properties during semiconductor manufacturing.
Aerospace field: Spherical graphite has excellent high-temperature resistance and lightweight characteristics, so it has broad application prospects in the aerospace field. It is used to manufacture aircraft engine parts, rocket tail nozzles, satellite structural parts, etc. In these applications, spherical graphite can provide good high-temperature resistance and lightweight effects, improving the performance and reliability of aerospace vehicles.
Automotive field: Spherical graphite is also widely used in the automotive industry, such as manufacturing auto parts, engine pistons, cylinder liners, etc. Because graphite has good lubricity and wear resistance, it can reduce friction and wear and improve engine efficiency and fuel economy.
Environmental protection field: Spherical graphite also has unique applications in the environmental protection field. It can manufacture high-efficiency filter materials, air purifiers, and other environmentally friendly equipment. Because graphite has good adsorption properties, it can adsorb and remove harmful substances in the air, protecting the environment and human health.
Nuclear energy field: In the nuclear energy field, spherical graphite can be used to make moderators and reflective layers in nuclear reactors. Because graphite has high density and good neutron absorption capabilities, it can effectively control and slow down fast neutrons, thereby improving the efficiency and safety of nuclear reactors.
High-temperature material preparation: Spherical graphite is also extensively utilized in high-temperature preparation of materials. It can make high-performance materials like high-temperature alloys and silicon carbide ceramics. Because graphite has an extremely high melting point and its chemical stability is high, it can keep the purity and stability of the material even at extreme temperatures and enhance the material's performance and application capabilities.
Other fields: Besides the above application fields, spherical graphite is widely used to manufacture sealing materials, bearings, brake pads, pencil leads, etc. In these applications, spherical graphite's excellent performance and versatility are fully demonstrated.
TRUNNANO (Luoyang Trunnano Tech Co., Ltd ) is a professional Spherical Graphite C Powder manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality Spherical Graphite C Powder, please feel free to contact us and send an inquiry.
