Use of needle coke

Needle coke is a high-quality material for manufacturing high-power and ultra-high-power electrodes. The graphite electrode made of needle coke has strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and high allowable current density. The needle coke produced at present can be divided into petroleum series and coal series according to the raw materials used. The Ministry of Petroleum is represented by the United States and the Ministry of Coal is represented by Japan. The production facilities of Mitsubishi Chemical Company and Xinyi Chemical Company in Japan were put into production in the late 1970s and early 1980s. The Great Lakes Carbon Company 1950 was successfully developed for the first time. 1964, the United carbide company of the United States successfully manufactured the needle coke ultra-high power electrode. According to the latest statistics, the domestic demand for high-power and ultra-high-power electrodes is 654.38+10,000 t/a, and the corresponding demand for needle coke is120,000 t/a. At present, due to the limited number of imported needle coke, the output of Jinzhou Petrochemical Company is only 30,000 t/a. Therefore, the output of ultra-high power covered electrode in China has to be determined by the number of needle coke.