2023-04-25

The modification of scales graphite

The research of scales graphite is mainly focused on the modification and modification of its surface. Usually, the performance of the scales graphite is improved through physical and chemical methods. Cover, surface oxidation, gas deposition, mixing modification and other methods, let's explain in detail the modification and modification method of scales graphite in detail:1. High temperature heat treatmentAfter high temperature thermal treatment of scales graphite in the air environment, the graphite of graphite materials has been improved to a certain extent, and the arrangement of layer -like structures is more orderly. High -temperature thermal treatment can effectively remove defects with high activity, making the chemical reaction activity on the surface of the scale graphite.2. particle size controlScales graphite is a very sensitive substance in chemical reactions. In different environments, his resistance will change, that is, his resistance value will change, but one thing

2023-05-17

Special graphite for electric spark processing

Electric spark processing is a new type of processing process in the mechanical manufacturing industry. Electric spark processing can process many metals with large hardness and can be processed. Copper materials can also use graphite materials. Graphite materials used for electrical electrodes used for electrical sparks must have the following conditions:(1) The structure is dense and uniform in tissue, and there should be no coarse particles and large pores;(2) There is a high mechanical strength and good processing performance. It can process complex shapes or sharp corners and thin slices;(3) Graphite tool electrodes, there are certain losses during the processing of electricity, this loss should be as low as possible;(4) The discharge characteristics are stable and the processing speed is fast. Therefore, graphite machining is generally used with graphite structure graphite or exquisite particle structure graphite. It is best to have the same sex in physical properties. Therefore

2023-02-22

Classification of graphite blocks

Classification of graphite blocks of graphite block classification of graphite blocksThe crushing of graphite blocks can be divided into three items, do you know?Pre -fragmentation (or crushing): This also refers to the crushing of block -shaped graphite block raw materials after entering the factory. Generally, it refers to crushing the block of the block of 200mm to 50 ~ 70mm.Middle crushing: This also refers to the granular block of graphite blocks that is further broken until the granularity necessary for the seasoning. Generally, the block degree of up and down 50mm after the forging is crushed to 1 ~ 20mm.Essence (or grinding): It is the following powders to grind some graphite raw materials to 0.15mm or 0.075mm particle size. Every time it goes through, the granularity of the raw materials has become smaller. The larger diameter of the large raw material before crushing is the ratio of the diameter of the larger block of the raw material after crushing, which is called a crushi

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.

2023-09-25

electronic effect

The load migration rate of graphene at room temperature is about 15000cm2/(v · s). This value exceeds 10 times the silicon material. More than twice. Under certain conditions such as low temperature, the load migration rate of graphene can even be as high as 250000cm2/(v · s). Unlike many materials, the electronic migration rate of graphene is less affected by temperature changes. At any temperature between 50 and 500K, the electronic migration rate of a single laye

2023-08-25

Thermal conductivity of polycrystalline graphite

The so-called carbon materials such as artificial graphite molded products are polycrystalline materials with extremely complex structures, and the basic structure of graphite crystallization has strong anisotropy. Therefore, the macroscopic thermal conductivity of carbon materials, apart from relying on empirical data, is almost unpredictable. The factors that have a significant impact on thermal conductivity include:(1) The differences in the basic properties of the initial raw materials;(2) The manufacturing process - macroscopic anisotropy;(3) Heat treatment temperature - the growth degree of graphite microcrystals;(4) Apparent density, distribution of holes, etc.

2023-06-12

Application prospect of Graphene in battery materials

In the current technological era, research and development in the field of battery materials are in a stage of rapid development. With the increasing demand from people, the demand for more efficient, environmentally friendly, and safe battery materials is also becoming increasingly urgent. Graphene, as an important new material, is receiving more and more attention and research. This article will discuss the application prospect of Graphene in the field of battery materials.Graphene is a single-layer honeycomb structure material composed of carbon atoms, which has excellent physical and chemical properties. It has outstanding performance in terms of conductivity, thermal conductivity, mechanical strength, and other aspects. These excellent properties provide a wide range of possibilities for the application of Graphene in the field of battery materials.First, Graphene can be used as the electrode material of batteries. Compared with traditional electrode materials, Graphene has highe

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.

Graphite electrode

It is mainly based on petroleum coke and needle -shaped coke, and coal pettea is used as a binding agent. The heating conductor can be divided into ordinary power, high power and ultra -high power according to its quality indicators. Graphite electrodes include:(1) Ordinary power graphite electrode. Allowing a graphite electrode with a current density of less than 17A/cm 2, it is mainly used for ordinary power furnaces such as steelmaking, silicon, and yellow phosphorus.(2) Antioxidant coating graphite electrode. A graphite electrode with a layer of antioxidant protective layer is coated on the surface, forming a protective layer that can conduct electricity and high temperature resistant oxidation, and reduce the electrode consumption during steelmaking.(3) High -power graphite electrode. Allowing a graphite electrode with a current density of 18 to 25A/cm 2, it is mainly used for high -power arc furnaces for steelmaking.(4) Ultra -high -power graphite electrode. Allows the use of gr

2023-07-26

The relationship between scales graphite and nuclear graphite

1. Different applications of scales graphite and nuclear graphite.Scales graphite has excellent performance such as high temperature resistance, heat conduction, conductivity, lubrication and other excellent performance. It is an indispensable resource for the cultivation of the development of emerging industries and the transformation and upgrading of traditional industries. The nuclear graphite is mainly used as graphite materials in the nuclear industry, including the atomic reactor with neutron chronic agents and reflexes, the production of hot column graphite for the production of isotopes, and the spherical graphite and block graphite for high -temperature gas and cold piles.2. Scales graphite and nuclear graphite are different branches of graphite materials.Graphite -like crystals are complete, thin and tough, their physical and chemical properties are stable, and they have good temperature resistance, lubrication, conductivity, heat shock resistance, corrosion resistance and a