Preparation method of long-circulation lithium ion battery negative electrode material

The invention provides a preparation method of a long-circulation lithium ion battery negative electrode material, which comprises the following steps: by taking a waste graphitization auxiliary material as a raw material, namely waste auxiliary materials such as a scrapped resistor material, a crucible crushed material, an electrode crushed material and the like generated in a graphitization production process as a carbon material, firstly carrying out crushing, grinding, shaping, demagnetizing and other process treatments on the carbon material; therefore, the standard of using as a lithium ion battery negative electrode material can be preliminarily reached. The material is subjected to a graphitization process in the process of being used as a graphitization auxiliary material, so that graphitization does not need to be carried out again in the process of converting the material into the lithium ion battery negative electrode material, the material has extremely high cost performance, and the lithium ion