2023-08-29

The main impregnating agents currently used for graphite

(1) Carbon based materials: Most carbon based materials use asphalt, but in order to control the filling rate, tar or asphalt is often mixed with low carbonization rate and low viscosity carbon based materials such as tar and creosote. They are carbonized through heat treatment after impregnation, so the residual material entering the pores is only carbon. The carbon process is currently a standard carbon process aimed at improving density, strength, conductivity, thermal conductivity, corrosion resistance, and wear resistance. It has become the most common treatment method for general carbon materials, especially in the production process of fine structured graphite and UHP electrodes for electric furnace steelmaking. It is an indispensable process. In order to achieve the same goal, there are also cases of impregnating synthetic resin and then roasting and carbonization. The carbonization of synthetic resin generally generates hard carbon, which is characterized by greatly increasin

2023-02-10

Fluorine

Purification method of high carbon graphite powder

High carbon graphite is a type of high carbon content carbon graphite powder with a carbon content of usually over 90%. There are many methods for purifying carbon graphite. The carbon graphite powder purification method can produce high-purity graphite powder with a carbon content greater than 99.9. Therefore, we have summarized various purification methods and techniques for high-purity graphite powder.The purification treatment methods for high carbon graphite powder are divided into two categories: chemical method purification and high-temperature purification. Chemical analysis purification problems include two types: alkaline acid method and alkaline acid method. Let's briefly introduce and study the purification methods of these three high-purity graphite powders:The process is now a feasible and mature method for contrast purification, and the purification method for high carbon graphite powder is basically the purification of technical personnel's acid: participating in graph

2023-02-06

Graphite structure

Graphite is a transitional crystal between atomic crystals, metal crystals and molecular crystals

2023-04-13

High pure graphite characteristics and application

High pure graphic refers to the carbon content of graphite greater than 99.99 %, and high pure graphite has the advantages of high strength, high density, high purity, good shock resistance, high temperature resistance, anti -oxidation, small resistance coefficient, corrosion resistance, and precision processing. It is an ideal inorganic non -metal material. It is used to process and make electric heating elements, electro -spark processing graphite, sintering molds, electronic tube anode, etc., which are widely used in the metallurgical industry's high -grade refractory materials and coatings Light industry's pencil core, carbon brush of electrical industry, electrode of the battery industry, and catalyst additives of the fertilizer industry, etc., high pure graphite can be produced, and can also produce graphite, graphite sealing materials and composite materials, graphite products, graphite reduction reduction reduction High -tech products such as additives have become an important

2023-09-06

What are the production characteristics of graphite electrodes?

(1) Long production cycle(2) High energy consumption(3) Multiple production processes(4) A certain amount of dust and harmful gases are generated during the production process, and it is necessary to take comprehensive ventilation and dust reduction measures as well as environmental protection measures to eliminate harmful gases.(5) The carbon raw materials required for production, such as petroleum coke and coal tar pitch, are by-products of production and processing in oil refining and coal chemical enterprises.

2023-10-08

Graphite anode usage

In an electrolytic cell, the current flowing into the electrolyte from this point is called a graphite anode plate. In the electrolysis industry, the anode is generally made into a plate shape, so it is called a graphite anode plate. It is widely used in ferries, wastewater treatment, industrial anti-corrosion equipment, or as a special material.Compared with other materials, graphite anode plates have advantages such as high temperature resistance, good conductivity and thermal conductivity, easy mechanical processing, good chemical stability, acid and alkali corrosion resistance, and low ash content; Used for electrolyzing aqueous solutions, producing chlorine, caustic soda, and electrolyzing salt solutions to produce alkali; For example, graphite anode plates can be used as conductive anodes for electrolysis of salt solution to produce caustic soda. Graphite anode plates can be used as conductive anodes in the electroplating industry, making them an ideal material for various elect

2023-06-07

Graphite physicss

The chemical properties of single -mass carbon at room temperature are relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents; burning with oxygen at different high temperatures to generate carbon dioxide or carbon dioxide; Below, single -quality carbon is more likely to be oxidized by acid; at high temperature, carbon can also react with many metals to generate metal carbides. Carbon is restored and can smell metal at high temperature.Graphite is soft, black and gray; it is greasy and can contaminate paper. The hardness is 1-2, and the hardness can be increased to 3 to 5 along the vertical direction. The proportion is 1.9 ～ 2.3. The surface area is concentrated at 1-20m2/g. Under the isolation of oxygen conditions, its melting point is above 3000 ° C. It is one of the most temperature-resistant minerals. It can conduct electricity and heat conduction.There is no pure graphite in nature, which often contains impurities such as SIO2, Al2O3, Feo, CAO, P2O

2023-10-27

Maintenance and upkeep of graphite crucibles

The graphite crucible must be strictly protected from moisture and must be stored in a dry place or on a wooden frame. When handling graphite crucibles, it is important to handle them with care and prevent them from falling or shaking. Before using them, they should be baked in a drying equipment or by the furnace to raise the temperature to 500 ℃. The graphite crucible should be placed below the surface of the furnace mouth to prevent wear and tear on the furnace cover. When adding materials, it should be based on the solubility of the crucible, and too much material should not be added to prevent tightening the crucible. The furnace outlet and crucible clamp should conform to the shape of the crucible, and the clamp in the middle should prevent damage to the crucible due to stress on the department. When removing slag and coke from the inner and outer walls of the crucible, it should be gently knocked to prevent damage to the crucible. A suitable distance should be maintained betwee

2023-04-21

Application of Graphene

Graphene makes indoor people feel as if they are in the windless "warm winter sun". They have both heating and health care. Different from traditional heating equipment such as air conditioners, oil sticks, floor heating, etc., graphene heat painting is more comfortable, more energy-saving, not boring, no noise, neither oxygen deficiency nor light pollution. It is a classi