The manufacturing process of antimony impregnated graphite is generally divided into two stages: graphite preparation and antimony impregnation. Graphite is usually prepared with high-purity graphite or natural graphite, and then made into billets through multiple processes such as crushing, screening, mixing, pressing and sintering. Antimony impregnation refers to impregnation of antimony into graphite green body after melting at high temperature. Generally, vacuum impregnation or pressure impregnation are required to ensure that antimony fully penetrates into graphite pores.
The main properties of antimony impregnated graphite include conductivity, thermal diffusivity, mechanical strength, chemical stability, etc. Among them, conductivity is one of the important characteristics of antimony impregnated graphite. The addition of antimony can significantly improve the conductivity and resistance temperature coefficient of graphite, making graphite a good conductive material. Thermal diffusivity refers to the thermal conductivity and thermal diffusivity of graphite materials during heating. Antimony-impregnated graphite has excellent thermal conductivity and can withstand high temperature and high pressure environment. It is widely used in the field of heat dissipation and thermal management of high-power electronic devices. Mechanical strength refers to the compressive, tensile and flexural properties of graphite materials. The mechanical properties of antimony impregnated graphite have also been significantly improved, with stronger durability and wear resistance.
Antimony impregnated graphite has many applications in industrial fields, such as graphite electrode, electric heating element, chemical reactor, etc. Among them, graphite electrode is one of the main applications of antimony impregnated graphite, widely used in electric arc furnace, iron and steel smelting, aluminum electrolysis, carbon electrode and other industries, with high conductivity, high wear resistance, high stability and other characteristics, which can greatly improve production efficiency and product quality. Electric heating element is another important application field of antimony impregnated graphite, which is mainly used in industrial furnaces, heat treatment furnaces, vacuum furnaces and other high-temperature equipment. It can rapidly raise temperature, evenly heat, long life and low power loss, and becomes one of the preferred materials for high-performance electric heating elements. Antimony impregnated graphite in chemical reactors is mainly used in high temperature and high pressure reaction process to withstand strong corrosive medium and chemical environment under extreme conditions, with good chemical stability, corrosion resistance and thermal conductivity.
