2023-02-08

Graphite flotation method

Floating is a commonly used and important mineral method. Graphite has good natural floating. Basically, all graphite can be purified by floating methods. In order to protect graphite scales, most of the graphite flotation uses multiple sections of processes. Graphite flotation collecting agents are generally used for kerosene, with a dosage of 100 to 200g/t. The foaming agent is generally used with pine or butad ether, and the amount is 50 to 250g/t.

What are the factors that affect the quality of flake graphite?

The quality of flake graphite determines the product quality of processed flake graphite powder. The flake graphite resource is crystalline natural graphite, which is formed by the metamorphism of carbonaceous rocks under long-term geological processes. The crystallization of flake graphite is in the form of flakes. The size of the flake crystal and the fixed carbon content of flake graphite are key factors that affect the quality of flake graphite. Below, we will take you to understand:As a basic processing material for various graphite powder products, the quality of flake graphite is a very important condition. Based on the quality and various parameters of flake graphite, it can be processed into flake graphite powder, ultrafine graphite powder, high-purity graphite, nano graphite, colloidal graphite and other graphite powder products. The size of flake graphite determines the lubrication performance of the processed graphite powder. The larger the size of flake graphite, the bett

2023-09-06

Introduction to Graphite Electrodes

Graphite electrodes are made of petroleum coke and asphalt coke as aggregates, coal tar pitch as binder, and undergo raw material calcination, crushing and grinding, batching, kneading, forming, roasting, impregnationA high-temperature resistant graphite conductive material made by graphitization and mechanical processing, called artificial graphite electrode (referred to as graphite electrode), to distinguish it from using natural graphiteA natural graphite electrode prepared from raw materials.Graphite electrodes are mainly used as conductive electrode materials for arc steelmaking furnaces.

2023-08-29

What precautions should be taken when using graphite electrodes in electric furnace steel mills?

(1) Select the appropriate electrode variety and diameter based on the capacity of the electric furnace and the equipped transformer capacity.(2) During the loading, unloading, and storage of graphite electrodes, attention should be paid to preventing damage and moisture. The electrodes that are affected by moisture should be dried by the electric furnace before use. When lifting, the joint holes and surface threads of the electrodes should be protected.(3) When connecting the electrode, compressed air should be used to blow off the dust in the connector hole. The force used to screw the connector into the electrode connector hole should be stable and uniform, and the tightening torque should comply with regulations. When holding the electrode, it is necessary to avoid the joint area, that is, clamp it above or below the bottom of the electrode joint hole.(4) When loading furnace materials into the electric furnace, in order to reduce the impact of furnace material collapse on the ele

2023-11-10

Graphite high-temperature purification method

Graphite is one of the substances with the highest melting and boiling points in nature, with a melting point of 3850 ± 50 ℃ and a boiling point of 4500 ℃. However, the boiling points of silicate minerals are all below 2750 ℃ (quartz boiling point), and the boiling point of graphite is much higher than the boiling point of the impurity silicate it contains. This characteristic is the theoretical basis for high-temperature purification of graphite. Fill the graphite powder directly into a graphite crucible and heat it in a purification furnace filled with inert gas and Freon protective gas to 2300-3000 ℃ for a period of time. Impurities in the graphite will overflow, thus achieving the purification of the graphite. The high-temperature method generally uses high carbon graphite containing over 99% carbon purified by flotation or chemical methods as the raw material, which can purify the graphite to 99% 99%. By further improving the process conditions and improving the quality of the cr

2023-04-14

Can expand graphite development

Graphite crystals have a hexagonal layer -shaped structure composed of carbon elements. The carbon atoms on the layer of flat plane are combined with powerful covalent bonds. Therefore, under appropriate conditions, a variety of chemicals such as acid, alkaline metals, and salt can be inserted into the graphite layer, and a new chemical phase -Graphite Intercities on compounds (referred to GIC). When this intervertebral compound is heated to an appropriate temperature, it can quickly decompose instantly, generating a large amount of gas, so that the graphite is expanded into a new substance of worm -shaped, that is, the expansion of the intervertebral compound of the expansion. graphite.The expansion graphite was first discovered by the German SChaufautl. In 1841, Schaufautl soaked natural graphite in a mixture of thick HNO3 and thick H2SO4. In 1963, he first applied for expanding graphite manufacturing technology patents and industrialized production in 1968.The above is some of the

2023-04-03

Graphite products Graphite Application common problems

Is it true that diamonds "fly" out of graphite powder

Do you know what a diamond is? Its chemical composition is carbon (C), and natural diamonds can only be called "diamonds" after being polished by diamonds. Natural diamonds are very rare, with only 2 diamonds weighing over 1000 carats (1 gram=5 carats) in the world and only a few diamonds weighing over 400 carats. The largest diamond discovered in China to date weighs 158.786 carats, which is known as the "Changlin Diamond". Rare things are precious, and precisely because natural diamonds that can be used as "diamonds" are rare, people want to replace them with "artificial" diamond, which naturally reminds them of the "twin" brother of diamonds - graphite.The chemical composition of diamond and graphite is carbon (C), which scientists refer to as "homomorphic variants" or "allotropes". From this term, it can be inferred that they share the same "quality", but their "form" or "nature" are different and vastly different. Diamond is currently the hardest substance, while graphite is one

2023-04-25

What is the role of scales when galgling?

The application of scales graphite is widely used in industries. Mulchogenic sand is one of the applications of them. Cover sand refers to the sand or core sand with a solid resin film on the surface of the sand grain. In the middle, scales need to be used. Today, I will explain what the scales have the functions when gog graphic is covered with membrane sand:The scaled graphite is used as a lubricant in the lubricant in the sandy sand. The littering of the luster sand can play a lubrication and high temperature resistant role in the sandwich sand. For the requirements of scales with scales in gifsta, it is required to be lubricated as a lubricant and high melting point, and the littering of the lubrication is a natural scale graphite with good lubrication. Carbon content. The melting point of the scale graphite itself is very high. After the production process processing, the high temperature resistance of scales graphite with scales with scales will be higher, and the lubrication ef

2023-06-06

Silicon fossil system

Chemical gas deposition (CVD) method) methodSilicon and carbon -containing gases have a heat decomposition through high -temperature graphite matrix, and SIC is deposited on the surface of the graphite matrix. The raw materials are trichloronetas (CH3SIC3), silicon chloride, hydrogen, silicon steam, etc. The deposition temperature range is wide, from 1175 ° C to 1775 ° C. The SIC layer generated by this method is very dense, the thickness is uniform, and the general thickness is about 0.1 to 0.3mm. However, the combination of SIC and graphite matrix is a combination of pure machinery, and the combination force is weak. When the temperature changes, the SIC layer is prone to cracking and peeling.Chemical Qi Evidence Method (CVR)The raw materials are coke powder and excessive quartz sand or non -fixed silicon powder. Chemical reactions occur when heated to 2000 ° C to generate SIO vapor. SIO steam and carbon -based reactions generate SIC. There is no obvious interface between SIC layers