Specializing in the research and development, processing and production of graphite products

Introduction to Graphite Production Process Graphite, also known as graphite material, is a material with excellent electrical, thermal and lubricating properties, and is widely used in electronics, metallurgy, chemical engineering and other fields. The production processes of graphite are divided into two types: natural graphite and synthetic graphite. The production process of natural graphite mainly consists of three steps: mining, grinding and processing. First of all, rocks with a relatively high graphite mineral content need to be selected, usually quartzite or mica rock. Then, the graphite ore is extracted from the vein through mining methods. Common mining methods include open-pit mining and underground mining. Open-pit mining is suitable for situations where the outcrop of ore veins is relatively large, and the ore is extracted through means such as blasting and dismantling. Underground mining is suitable for situations where the exposed head of the ore vein is small or the burial depth is large, and the ore needs to be transported out of the ground through underground tunnels or shafts.

The extracted graphite ore is ground, with the main purpose of removing impurities from the graphite ore and obtaining pure graphite powder. Wet grinding is usually adopted. Graphite ore is mixed with water and a certain amount of grinding medium is added. Through the action of friction and impact, the ore powder is crushed into powder. During the grinding process, it is necessary to control the grinding time and the size of the grinding medium to obtain the appropriate graphite particle size. Finally, the graphite powder that has undergone grinding treatment can be processed. Common processing methods include pressing, sintering and graphitization. Pressing is a process where graphite powder is placed in a mold and pressed under high temperature and high pressure conditions, causing the graphite powder to be closely combined into hard graphite blocks. Sintering involves placing pressed graphite blocks into a sintering furnace and subjecting them to sintering at high temperatures, causing the particles of the graphite blocks to fuse with each other and form a dense structure. Graphitization treatment is a process of modifying graphite blocks through chemical reactions or physical changes in a high-temperature and high-pressure environment to enhance their performance.