Ball milling technology

Abstract

The invention discloses a ball milling technology. The ball milling equipment comprises a ball milling equipment body, and a cavity of the ball milling equipment body is connected with a pressure gauge with electric contact (2) and a solenoid valve (1) in series by an exhaust pipe (3), and the pressure gauge with electric contact is connected with a control circuit of the solenoid valve. According to the technology scheme, the pressure gauge with electric contact of the ball milling equipment monitors pressure of the cavity of the ball mill; when the internal pressure is higher than the setting pressure, the control circuit of the solenoid valve opens the solenoid valve, thereby positioning the solenoid valve in an exhaust state in order to reduce internal pressure of the cavity, solving the material spraying problem caused by excessive pressure in the existed ball milling equipment, effectively preventing equipment damage, improving safety of the equipment, guarantying accuracy of lithium iron phosphate ingredient, and finally improving product quality of the lithium iron phosphate cathode material.

Description

technical field [0001] The invention relates to a production equipment of lithium ferrous phosphate, in particular to a ball milling technology. Background technique [0002] Lithium iron phosphate (LiFePO 4 ) is mainly used for power batteries for electric vehicles. The crystal structure is olivine structure, which has the characteristics of high safety and long life. It is widely used in the field of power batteries such as electric vehicles and electric tools, and the field of energy storage equipment for wind power generation systems. At present, petroleum energy is depleting and environmental protection consciousness is getting more and more attention. The alternative energy source of petroleum will be paid more and more attention. The important medium of electric energy storage-battery is also attracting more and more attention. The advent of lithium iron phosphate cathode material solves the problem of power battery. The required safety performance and service life ...

AI Technical Summary

Problems solved by technology

Iron phosphate, lithium salt, carbon source and additives are mixed in a dispersant (pure water / ethanol), and when heated or collided, they are easy to decompose and generate gas, and the pressure in the ball mill cavity will slowly increase until the material due to excessive internal pressure , splashed out from the gap of the gland, damaging the equipment and even injuring the workers. Due to the splashing of the material, the ingredients of lithium iron phosphate changed, which destroyed the product quality of lithium iron phosphate cathode material

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