Silicon metal composite negative electrode material grinding device and grinding method thereof

Abstract

The invention discloses a silicon metal composite negative electrode material grinding device. The silicon metal composite negative electrode material grinding device comprises a machine cylinder, stand columns fixedly arranged at the bottom of the machine cylinder, and a box door hinged to the side surface of the machine cylinder, a feeding hopper, an inflator pump and a gas tank are arranged onthe box door, and a control valve used for controlling the feeding hopper to feed materials into the machine cylinder is arranged on the feeding hopper. According to the silicon metal composite negative electrode material grinding device and a grinding method thereof, process steps including mixing, calcining, grinding, screening and the like of the silicon metal composite negative electrode material in the production process can be integrated in one device to be carried out, the occupied area of the device is greatly reduced, the number of the device is small, so that the production cost is correspondingly reduced, and the device is suitable for small and medium-sized enterprises; and meanwhile, due to the fact that raw materials are transferred and transported are omitted, so that time is saved, the production period of the silicon metal composite negative electrode material is shortened, and the silicon metal composite negative electrode material is good in practicability.

Description

technical field [0001] The invention relates to the production field of silicon-metal composite negative electrode materials, in particular to a silicon-metal composite negative electrode material grinding device and a grinding method thereof. Background technique [0002] At present, most of the common lithium battery anode materials on the market are made of carbon. Since the specific capacity of carbon is close to the theoretical value of 372mAh / g, it is difficult to increase it, so it cannot meet the growing demand for specific energy of lithium-ion batteries. . Therefore, finding high specific capacity anode materials has become an important development direction. Among various non-carbon anode materials, silicon-metal alloy materials have become a research direction of new anode materials due to their high volume specific capacity, simple synthesis method and good safety. [0003] At present, in the production process of silicon-metal composite negative electrode mat...

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Problems solved by technology

[0004] The object of the present invention is to provide a silicon-metal composite negative electrode material grinding device and its grinding method in order to solve the above problems, to solve the long production cycle of the traditional silicon-metal composite negative electrode material in the prior art, and at the same time separate multiple equipment The installation needs to occupy a large workshop area, the production cost is high, and it is not suitable for small and medium-sized enterprises.

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