2023-02-06

Graphite mineral distribution

The large and medium -sized graphite mines in the world are mainly distributed in China, India, Brazil, Czech Republic, Canada, Mexico and other countries

2023-10-10

Introduction to Graphite Carbon Products

1. Used as refractory material: Graphite and its products have properties of high temperature resistance and strength, and are mainly used in the metallurgical industry to manufacture graphite crucibles. In steelmaking, graphite is commonly used as a protective agent for steel ingots and as a lining for metallurgical furnaces.2. As a conductive material: used in the electrical industry to manufacture electrodes, brushes, carbon rods, carbon tubes, positive electrodes for mercury positive current transformers, graphite gaskets, telephone parts, coatings for television tubes, etc.3. As a wear-resistant lubricating material: Graphite is often used as a lubricant in the mechanical industry. Lubricating oil often cannot be used under high-speed, high-temperature, and high-pressure conditions, while graphite wear-resistant materials can work without lubricating oil at high sliding speeds at temperatures of 200-2000 ℃. Many devices that transport corrosive media are widely made of graphite m

2023-10-27

Characteristics of graphite crucibles

Graphite crucibles have good thermal conductivity and high temperature resistance. During high-temperature use, their coefficient of thermal expansion is small, and they have certain strain resistance for rapid heating and cooling. Strong corrosion resistance to acid and alkaline solutions, with excellent chemical stability. Graphite crucibles, due to their excellent performance, are widely used in industries such as metallurgy, casting, machinery, and chemical engineering for the smelting of alloy tool steel and the melting of non-ferrous metals and their alloys. And it has good technical and economic effects. The production of domestic graphite crucibles has reached or even exceeded that of imported crucibles:1. The high density of graphite crucibles enables them to have good thermal conductivity;2. The graphite crucible has a specially made and dense molding material on its surface, greatly improving the corrosion resistance of the product and extending its service life;3. The ther

2023-03-28

What is the application scope of industrial graphite powder

Graphite board antioxidant solution increases the period of use

Graphite boards are used in many industries, and due to their different advantages, future use will be more common. Old iron is very concerned about the use of graphite boards. The solution of the antioxidant solution of graphite board can reasonably increase the use period.After the formation of graphite board, it must be solved by antioxidantization. Generally, antioxidants are used, which is a thick liquid state. The ingredients are heat -resistant nano -ceramic particles. In the natural environment of air oxidation within 1300 ° C in the application temperature of the graphite board, its antioxidant actual effect is very good. After a variety of specifications of graphite boards with pre -immersed in the antioxidant protective film, its liquid can penetrate into the pores of the graphite board, and produce a layer of 0.02mm antioxidant on the surface of the air holes and graphite molds. The sexual protective membrane is exactly the reasonable blocking gas of this layer of protecti

2023-09-25

graphite expansion graphite environmental materials

The effect of expanding graphite on water pollution has a large number of research results. In terms of governing oil and organic pollution in the control of water bodies, expansion graphite is far more effective and economical than ordinary activated carbon now. But expansion graphite is inconvenient to transport and needs to be prepared at the application site. The preparation, use, recycling, and regeneration of expansion graphite environmental protection materia

2023-12-19

Key points of graphite deep processing technology

2023-04-18

The application of scales graphite in the coating industry

The functional fillers of scales are mainly used for anti -corrosion coatings, fireproof coatings and conductive coatings.As an anticorrosive material, it has a good rust -proof primer made of charcoal black, talc powder and oil. It has good chemical resistance and solvent corrosion performance. If you add chemical pigments such as zinc yellow to the formula, its rust -proof effect is better. EssenceIt is used as a fireproof filler. It is expandable graphite. It is a graphite intervertebral compound obtained by natural graphite scales. 300 times) suffocating the flame, and at the same time, the expansion material is generated to achieve the effect of isolation of the flame, delay or interrupting the flame spread, and it is not burning, soft, high on the surface, and good coach layer. However, the volume and dosage of the expansion body should be appropriate. Tests show that 150um particles, 30%expansion multiple, and 5%of the amount are the most suitable.Scales graphite can be directl

2023-07-17

What are the characteristics of high pure scales graphite

High -pure scales graphite has good high temperature resistance, conductivity, high -pure graphite thermal conductivity, lubrication and chemical stability. Graphite manufacturers are widely used in metallurgical, machinery, environmental protection, chemical, fire, electronics, medicine, military, military, aerospace and other fields. Its status in the national economy is becoming more and more important, and it is an indispensable and important non -metal raw material for modern industry and high -tech development. Trace impurities have a great impact on the performance of graphite products. The higher the carbon content of high pure scales, the better its performance as a functional material.In order to analyze the trace impurities in high pure scales, the sample is usually grayed or wet to digest to remove carbon, dissolved ash with acid, and then determined the impurities in the solution. The grayization method does not need to dissolve gray with ultra -pure acid, avoiding the ri

2023-08-21

High power and ultra high power electrodes

The characteristic of high-power and ultra-high-power electrodes is low resistivity, allowing for a current load of 25% -40% higher than that of ordinary electrodes; The allowable current density is greater than twice; Low coefficient of thermal expansion; High flexural strength; Low oxidation loss. The production of high-power and ultra-high-power electrodes uses needle coke as the raw material, and multiple impregnations are used in the production process to increase the graphitization temperature, and corresponding improvements are made to the bonding and impregnating agents.The requirements for ultra-high power graphite electrodes are relatively strict. The volume density of the electrode reaches 1.72g/cm3; The resistivity drops to 5-7 Ω. mX10-6. Due to the fact that the current density allowed by ultra-high power is more than twice that of ordinary electrodes, the thermal stress and impact it bears increase. Therefore, the electrode requires a low coefficient of thermal expansion