ZHENGSHAN TECHNOLOGY

As a type of carbon material, electrode paste can theoretically be prepared using any material with high carbon content. In the production of conventional carbon materials, the raw materials used to produce carbon and graphite materials are carbon raw materials. Due to differences in sources and production processes, there are significant differences in their chemical structure, morphological characteristics, and physicochemical properties. According to their physical state, they can be classified into solid raw materials (i.e. aggregates) and liquid raw materials (i.e. binders and impregnating agents). Among them, solid raw materials can be divided into high ash raw materials and low ash raw materials according to their inorganic impurity content. The ash content of low ash raw materials is generally less than 1%, such as petroleum coke, asphalt coke, etc. The ash content of multi ash raw materials is generally around 10%, such as metallurgical coke, anthracite, etc.
The commonly used raw materials can be divided into the following categories:
① Solid carbon based raw materials. There are mainly petroleum coke, asphalt coke, metallurgical coke, anthracite, natural graphite, artificial graphite, carbon black, and production return materials (raw crushing, calcination crushing, and graphite crushing), among which petroleum coke and asphalt coke can be divided into two categories: ordinary coke and needle coke.
② Non carbonaceous solid raw materials. There are mainly metal powders used in the production of electrical carbon, plant materials used in the production of activated carbon, and silicon carbide and metal silicon used in the production of microporous carbon bricks.
③ Adhesives and impregnating agents. There are mainly coal tar pitch, petroleum pitch, synthetic resins, lubricants, and low melting point alloys.
④ Modified additives. There are mainly coal tar, onion oil, iron oxide, and stearic acid.
In addition, some auxiliary materials (insulation materials, filling materials, and resistance materials) are also used in the production of carbon materials, such as metallurgical coke, petroleum coke, carbon black, quartz sand, and river sand. Some special raw materials are used in the production of new and special carbon materials, such as polypropylene wax fibers and gaseous organic compounds.