2023-09-05

How is the steelmaking electric arc furnace equipped with graphite electrodes?

Ordinary power electric furnaces are equipped with ordinary power graphite electrodes, high-power electric furnaces are equipped with high-power graphite electrodes, and ultra-high power electric furnaces are equipped with ultra-high power graphite electrodes.For AC steelmaking arc furnaces,The 10-30t electric furnace is equipped with graphite electrodes with a diameter of 300-400mm,30-50t electric furnace equipped with 450mm diameter graphite electrode,60-80t electric furnace equipped with 500mm diameter graphite electrode,100-170t electric furnace is equipped with graphite electrodes with a diameter of 550-600mm,The 200t electric furnace is equipped with graphite electrodes with a diameter of 600-700mm,250-300t electric furnace is equipped with 700mm diameter graphite electrodes.For DC steelmaking arc furnaces,30t electric furnace equipped with 450mm diameter graphite electrode,A 60t electric furnace is equipped with a 500mm diameter graphite electrode,70-80t electric furnace equipp

2023-08-03

Flake graphite processing

Flake graphite is obtained by mining and processing from graphite mines. The types of ore mined are different, and when processing flake graphite, it is also necessary to process it correctly based on the characteristics of the graphite ore. So how should we proceed with the operation? Let's have a simple understanding of flake graphite below.1. Mineral processing method for flake graphite cryptocrystalline graphite.Cryptocrystalline graphite crystals are very small, hence also known as microcrystalline graphite. Graphite particles are usually embedded in clay and difficult to separate. Due to the high grade of the raw ore (usually containing carbon), many graphite mines directly crush and process the extracted ore, selling graphite powder products.2. Mineral processing method for crystalline graphite in flake graphite.The natural floatability of crystalline graphite is good, and it is basically used in China. Due to the particle size of graphite sheets being one of its most important

2023-07-24

Skin graphite mineral procurement agent

Scales graphite is a crystalline crystal carbon. It has high electrical and thermal conductivity, high temperature resistance, stable chemical properties, low hardness and slippery. It is easy to adhere to the solid surface and can draw clear dark stripes on the paper. These excellent properties of the mineral selection process and minerals have made it widely used in industry. The following is the scales graphite minerals introduced by scales graphite manufacturers:Graphite ingredients, mining agents are mainly flotal, sometimes shaking sorting. This thin piece uses a static electricity selection method, but because the electrical selection needs to be fully dry and accurate, it is difficult to manage high -voltage power management in a humid environment, difficulty in processing fine particles, and cannot be promoted.In non -metal minerals, graphite is a relatively easy to float mineral. Therefore, scales graphite can only float well with foaming agents (such as pine oil oil, methax

2023-11-01

The Electronic Effect of Graphene

Graphene already exists in nature, but it is difficult to peel off a single layer structure. Graphene is stacked layer by layer to form graphite, with a thickness of 1 millimeter containing approximately 3 million layers of graphene. A pencil lightly scratches on paper, leaving traces that may be several or even just one layer of graphene.The carrier mobility of graphene at room temperature is about 15000 cm2/(V · s), which is more than 10 times that of silicon material and more than twice that of the known material indium antimonide (InSb) with the highest carrier mobility. Under certain specific conditions, such as low temperature, the carrier mobility of graphene can even reach up to 250000 cm2/(V · s). Unlike many materials, the electron mobility of graphene is less affected by temperature changes. At any temperature between 50 and 500K, the electron mobility of single-layer graphene is around 15000 cm2/(V · s).In addition, the semi integer quantum Hall effect of electron carriers

2023-06-14

Knowledge points related to flake graphite

As a functional filler for coatings, flake graphite is mainly used for anti-corrosion coatings, fireproof coatings, and conductive coatings. As an anti-corrosion material, it is a rust resistant primer made of carbon black, talc powder, and oil, which has good chemical resistance and solvent corrosion resistance. If chemical pigments such as zinc yellow are added to the formula, the rust prevention effect will be better.In lithium-ion battery materials, anode materials are the key to determining battery performance. As a high crystallinity graphite material, the particle size of flake graphite directly affects the specific surface area of the electrode and the proportion of edge carbon atoms, which has a significant impact on the irreversible specific capacity of electricity. Therefore, flake graphite plays a crucial role in batteries.Flake graphite is one of the important materials for lithium batteries due to its high electronic conductivity, large lithium ion diffusion coefficient,

2023-02-21

What are the advantages of high -purity graphite products

What are the advantages of high -purity graphite products? High -purity graphite has the characteristics of graphite that has undergone unique production and processing, and has the characteristics of anti -corrosion, good heat transfer, and poor possession. Several advantages of high -purity graphite products:1. heat resistance: The solution point of the graphite is 3850 ± 50 ° C, and the melting point is 4250 ° C. Even if the high temperature and high voltage and electricity are burned, the net damage is not large, and the line expansion coefficient is not large. Graphite's compressive strength increases with the temperature, and the graphite compressive strength is doubled at 2000 ° C. The chemical change temperature of the heat release reaction welding at the construction of the heat control welding project is very high, so that the raw materials of the welding mold application must be heat -resistant.2. Conductivity and heat transfer: The conductivity of high -purity graphite is

2023-04-03

The shortcomings and prevention of graphite mold heat treatment process

The technical requirements for refractory materials for scales graphite

Scales graphite has a strong heat shock resistance and good corrosion resistance. It is the main carbon raw material used in carbon resistance materials. It has an important effect on the corrosion resistance and high temperature intensity of carbon bricks such as magnesium carbon bricks. Essence In the actual production process, carbon -combined refractory materials have strict requirements for the purity, gray, particle size, shape and addition of scales graphite.A large number of studies have shown that the purity of graphite is directly related to the high temperature resistance strength of magnesium carbon bricks and the melting loss rate in use. The high temperature resistance of magnesium carbon bricks increases with the increase of graphite purity, which is the result of different micro -structures of magnesium carbon bricks. Magnetic carbon bricks made of lower -purity graphite have a larger thick pore and higher pore rate than high -pure graphite, which may be related to the

2023-06-12

Production and Application of Battery Specific Graphite

Battery materials have always been a highly concerned field in the new energy industry. Among them, graphite, as a type of battery material, has been widely used due to its good conductivity, high-temperature stability, and corrosion resistance. This article will introduce the production and application of battery specific graphite, explore its advantages and future development prospects in the field of batteriesFirstly, the application of graphite as a battery material is mainly reflected in lithium-ion batteries. At present, lithium-ion batteries have become an important driving force in the fields of electric vehicles, mobile phones, and other fields. Among them, graphite, as the negative electrode material of lithium-ion batteries, has high energy density, long life, and other characteristics, and is widely used. The production process mainly includes steps such as carbonization, drying, ball milling, and screening. Among them, the selection of raw materials and the optimization o

2023-11-06

Advantages and disadvantages of high carbon graphite purification methods

The flotation method is one of the conventional mineral purification methods that consumes less energy and reagents, and has a lower cost. This is a major advantage of the flotation method for purifying graphite. However, using flotation to purify graphite can only achieve a limited increase in its grade. For flake graphite, using multi-stage grinding not only cannot completely dissociate its monomer, but also is not conducive to protecting the large scale of graphite. Therefore, using flotation to further improve graphite grade is neither economical nor scientific. To obtain high carbon graphite with a carbon content of over 99%, chemical methods must be used to purify the graphite.（1） Chlorination roasting method. The low roasting temperature and low chlorine consumption of the chlorination roasting method significantly reduce the production cost of graphite. At the same time, the carbon content of graphite products is equivalent to that after treatment with hydrofluoric acid, and t