Needle coke is the main raw material for making advanced graphite electrodes. According to different raw materials, it is divided into two types: oil series and coal series. Needle coke produced from petroleum heavy oil as raw material is the oil system, and needle coke produced from coal tar pitch and its fractions as raw material is the coal system. The production processes of the two needle cokes are not exactly the same, but their uses are basically the same. The petroleum system is represented by the United States, and the coal system is represented by Japan. The production facilities of Mitsubishi Chemical and New Daily Chemical Corporation in Japan were put into production in the late 1970s and early 1980s. The Great Lakes Carbon Company of the United States first successfully developed it in 1950.

Needle coke is a porous solid with a silver-gray appearance and metallic luster. Its structure has obvious flow texture, large and few pores and slightly elliptical shape, and the particles have a large aspect ratio, like a fibrous or needle-like texture It feels lubricated to the touch.

Needle coke is widely used in electric furnace steelmaking, nuclear reactor deceleration materials and ultra-high-power electrodes for rocket launches. Needle coke is a high-quality material for manufacturing high-power and ultra-high-power electrodes. It is made of needle coke Graphite electrodes have the advantages of strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and large allowable current density.

Needle coke is a high-quality material for manufacturing high-power and ultra-high-power electrodes. Graphite electrodes made of needle coke have strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and large allowable current density, etc. advantage. According to the raw materials used, the needle coke currently produced can be divided into two types: petroleum-based and coal-based. The petroleum system is represented by the United States, and the coal system is represented by Japan. The production facilities of Mitsubishi Chemical and New Daily Chemical Corporation in Japan were put into production in the late 1970s and early 1980s. The Great Lakes Carbon Company of the United States first successfully developed it in 1950. In 1964, Union Carbide Corporation of the United States successfully manufactured ultra-high power electrodes using needle coke as raw material. According to the latest statistics, the domestic demand for high-power and ultra-high-power electrodes is 60,000 to 100,000 t/a, and the corresponding demand for needle coke is 60,000 to 120,000 t/a. At present, due to the limited quantity of imported needle coke, the output of Jinzhou Petrochemical Company is only 30,000 t/a. Therefore, the output of domestic ultra-high power electrodes has to be determined by the quantity of needle coke.