What you should know about artificial graphite

(What you should know about artificial graphite)

Recently, on Sinopec’s annual results teleconference, the company representative answered questions about the oil prices, and said that the future trend of oil prices is still very uncertain, and it is expected to be around $100 this year and $85 next year respectively.

Sinopec, “There are many factors affecting oil prices at the moment, including geopolitics, macroeconomic trends, the implementation of the policy of OPEC+, the strength of the US DOLLAR and so on. We see a lot of uncertainty in the future oil prices. It is impossible to predict the accurate price, but a general trend could be estimated.”

According to Sinopec, international institutions generally have a forecast of around $100 this year and around $85 next year in the oil prices. As geopolitical problems and other issues ease next year, oil prices will be lower than this year.

The volatile oil prices in the international market will continue to affect lots of industries and the supply of many artificial graphite.

Artificial graphite, is similar to polycrystals in crystallography. There are many kinds of artificial graphite, and the production process is very different.

In a broad sense, all graphite materials obtained by carbonization of organic matter and then by high temperature treatment of graphitization can be collectively referred to as artificial graphite, such as carbon (graphite) fibers, pyrolytic carbon (graphite), foamed graphite, etc.

In a narrow sense, artificial graphite usually refers to the use of carbonaceous raw materials (petroleum coke, pitch coke, etc.) with low impurity content as aggregates, coal tar pitch, etc. as binders. Bulk solid materials prepared by processes such as roasting) and graphitization, such as graphite electrodes, isostatic graphite, etc.

There are many forms of artificial graphite, including powder, fiber and block, while artificial graphite in the narrow sense is usually block, which needs to be processed into a certain shape when used. It can be regarded as a multiphase material, including graphite phase converted from carbonaceous particles such as petroleum coke or pitch coke, graphite phase converted from coal tar binder surrounding the particles, particle packing or coal tar tar binder The pores formed after heat treatment, etc. Generally speaking, the higher the heat treatment temperature, the higher the degree of graphitization. The degree of graphitization of industrially produced artificial graphite is usually less than 90%.

Compared with natural graphite, artificial graphite has weaker heat transfer performance, electrical conductivity, lubricity and plasticity, but artificial graphite also has the advantages of better wear resistance, corrosion resistance and low permeability than natural graphite.

The raw materials for making artificial graphite mainly include petroleum coke, needle coke, pitch coke, coal tar, carbon microspheres, etc.; its downstream products mainly include graphite electrodes, prebaked anodes, isostatic graphite, high-purity graphite, nuclear graphite, thermal switch, etc.

The application of artificial graphite products is mainly reflected in the following aspects:

1. Graphite electrode: a graphite electrode made of petroleum coke and needle coke as raw materials and coal tar as a binder, which is calcined, batched, kneaded, pressed, roasted, graphitized and machined. The electric arc is used to release electric energy to heat and melt the charge, which is widely used in electric furnace steel, industrial silicon, yellow phosphorus and other equipment.

2. Prebaked anode: It is made of petroleum coke as raw material and coal pitch as binder. It is made by calcining, batching, kneading, pressing, roasting, dipping, graphitization and machining. It is generally used for the electrical conductivity of electrolytic aluminum equipment. anode.

3. Bearings, sealing rings: equipment for conveying corrosive media, piston rings, sealing rings and bearings made of artificial graphite are widely used, and there is no need to add lubricating oil during operation.

4. Heat exchangers and filters: Artificial graphite has the characteristics of corrosion resistance, good thermal conductivity and low permeability. It is widely used in the chemical industry to make heat exchangers, reaction tanks, absorption towers, filters and other equipment.

5. Special graphite: using high-quality petroleum coke as raw material, coal tar or synthetic resin as binder, through raw material preparation, batching, kneading, tableting, crushing, re-kneading, molding, multiple roasting, multiple impregnation and purification and graphitization and machining, generally including isostatic graphite, nuclear graphite, high-purity graphite, etc., used in aerospace, electronics, and nuclear industries.

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At present, international supply chains were shocked, and logistics and transportation efficiency decreases. Geopolitical conflicts further aggravate uncertainties about the European and American economic recovery and the global commodity supply. For this reason, I assume the price of the artificial graphite would not decrease significantly in the short term.

(What you should know about artificial graphite)