Graphite sagger, also known as electrothermal graphite sagger, refers to a box-shaped graphite product made of high-purity graphite through precision processing. Graphite sagger has the advantages of low thermal conductivity, high refractoriness, impact resistance, corrosion resistance, and high strength. It is widely used in the sintering process of lithium iron phosphate materials for lithium-ion batteries.
The main raw material of graphite sagger is high-purity graphite. my country is one of the main graphite-producing countries. Thanks to its abundant resource reserves, my country's graphite production has maintained a long-term growth trend. In 2022, my country's natural graphite output will reach 896,000 tons, a year-on-year increase of 14.6%. Heilongjiang, Inner Mongolia, Shandong, Hubei, and other places are the main producing areas of natural graphite in my country, among which the graphite resource reserves in Heilongjiang account for nearly 60% of my country's. Benefiting from the sufficient supply of raw materials, the development of my country's graphite sagger industry has accelerated.
The production process of graphite sagger is relatively complicated, and it needs to go through multiple steps such as raw material preparation, molding, drying, sintering, and surface treatment. Forming is a key link in the production of graphite saggers, which can be divided into two types: cold press forming and plastic forming. Cold press forming has the advantages of high efficiency, energy saving, environmental protection, convenient operation, and short time consumption, and has become the mainstream forming process of graphite saggers. In the future, with the maturity of technology, the quality and output of my country's graphite saggers will continue to increase.
Graphite saggers are widely used, and the lithium-ion battery field is the largest demand side. In recent years, benefiting from national policy support and the continuous improvement of people's living standards, sales of new energy vehicles in my country have continued to grow. Lithium-ion batteries, as power batteries for new energy vehicles, are increasingly in demand in the market. Graphite saggers can be used to sinter lithium iron phosphate materials for lithium-ion batteries. With the continuous improvement of the prosperity of downstream industries, the market scale of graphite saggers has further expanded. According to the "2023-2028 China Graphite Sagger Industry Market In-depth Research and Development Prospect Forecast Report" released by the New Sijie Industry Research Center, the market size of my country's graphite sagger will reach 160 million US dollars in 2022, a year-on-year increase of 5.1%.
There are many manufacturers of graphite saggers in my country, mainly including Nantong Planet Graphite Co., Ltd., Shaanxi Sany Hi-Tech Graphite New Material Co., Ltd., Hunan Jinbo Carbon Co., Ltd., Qingdao Ouer Graphite Co., Ltd., etc. ., Zibo Ouzheng Carbon Co., Ltd., etc. At present, Planet Graphite is promoting the intelligent manufacturing project of graphite sagger, a negative electrode material for lithium batteries. After completion, the annual production capacity of graphite saggers and boxes will reach 6,500 tons.
Xinsijie industry analysts said that graphite sagger, as a sintered container, is widely used in the production process of lithium-ion batteries. In the future, with the gradual release of downstream demand, the development trend of the graphite sagger industry will continue to improve. Benefiting from the sufficient supply of raw materials and technological progress, the quality and output of graphite saggers in my country have continued to increase. With the continuous efforts of local enterprises, the concentration of my country's graphite sagger industry is expected to increase.
Keywords: graphite sagger