graphite electrode factory

These materials can be used to manufacture and process complex parts. In addition, products can be improved through processing techniques such as coating, dipping and purification.Special graphite materials include isostatic pressing, extruding, molding vibration forming and expanded graphite, carbon graphite felt and carbon-carbon composite materials. Industrial applications Anodes for the production of fluorine hexachloride Carbon graphite for continuous casting process Carbon graphite for die casting, centrifugal casting and train wheel casting Carbon graphite lining for smelting and heat preservation process Carbon-carbon composite components for the nuclear industry

Graphite core bricks for the nuclear industry Graphite Degassing system Artificial graphite powder for high-temperature reactor fuel matrix Graphite sheet for X-ray anode Graphite for electro-discharge discharge (EDM) Graphite for smelting and heat preservation process Graphite for producing diamond tools / special ceramics Graphite for synthetic diamond Graphite for electrolysis Graphite nuclear reactor Machined graphite balls High-pressure switch nozzles Graphite disks and molds for refractory industry Graphite for the production of industrial and hollow glass products and glassware Graphite for float glass production Roughly processed graphite electrode electronics industry Brazing and glass-metal sealing fixtures Semiconductor and solar technology Coating process carrier Graphite crucible and mold for processing solar-grade silicon Graphite electrode for plasma etching Graphite for ion implantation Graphite for optical fiber industry

Graphite crucible for electron beam evaporation / lining Graphite for pulling monocrystalline germanium Graphite components for pulling single crystal germanium Graphite for pulling single crystal silicon Graphite for pulling polycrystalline silicon Graphite for polycrystalline silicon deposition Cutting polycrystalline and single crystal products Cutting graphite electrode factory beams, pedestals and graphite boats for crystal epitaxy, high-temperature industry for the production of high-purity graphite for polysilicon, carbon-carbon composite furnaces, high-temperature furnaces

, graphite heating pipes, heating elements, heat conduction gas pipes for nuclear industry, SIGRATHERM® graphite hard felt, SIGRABOND® Carbon-carbon composite semi-finished products, sintered plates, charging systems, SIGRATHERM® soft felt, SIGRAFLEX® graphite foil and laminated coils for the automotive and machinery industry, bearings and sliding parts, carbon brushes, dry and wet running pumps and compressor parts, dynamic seals, SIGRAFLEX® graphite Foil and coil

Megosztás a facebookon

The specific surface area is large, the number of micropores is large, and the adsorbent that can be adsorbed on the walls of fine pores is more. Because the adsorption speed is affected by the internal diffusion speed, the size of the adsorbate (solute) molecules is proportional to the pore size of the activated carbon, which is most favorable for adsorption.

When the activated carbon is put into water, the air released when it adsorbs water molecules will produce many very small blisters (just visible to the naked eye), and they will constantly float to the water surface. As activated carbon adsorbs water molecules to reach saturation, it will increase Only one's own weight will gradually sink to the bottom of the water.

The smaller the solubility, the easier it is to adsorb. The coal-based activated carbon generally has a macromolecular pore structure, and the generated bubble phase is also relatively large. Coconut shell activated carbon belongs to the category of fruit shell activated carbon. The shape of coconut shell activated carbon is generally broken particles, flakes, and shaped activated carbon, such as columnar and spherical activated carbon, are mostly coal-based carbon. In homologues, larger molecules are easier to adsorb than smaller ones. Aromatic organics are more easily adsorbed than aliphatic organics.

It is significantly lighter in graphite electrode for Electric arc furnace than coal activated carbon. Activated carbon is suitable for high-purity domestic drinking water, industrial water and wastewater treatment, deep purification and dechlorination, decolorization, deodorization and gold refining. Coconut shell activated carbon has low density and light hand, so it can be put into water. Because the adsorption process can be regarded as three stages, the internal diffusion has a greater impact on the adsorption speed, so the micropore distribution of activated carbon is another important factor affecting adsorption.

Megosztás a facebookon

Graphite Electrode in Different Size

The development of China's activated carbon industry shows increasing output. The proportion of lignin activated carbon decreased from 80% of China's total activated carbon production in the late 1970s to less than 30% in the 1990s. (1) Industrial layout The production of coal-based activated carbon is mainly concentrated in Shanxi, Henan and Ningxia. The layout of China ’s activated carbon industry Since the mid-1980s, after more than 20 years of rapid development, China ’s activated carbon industry has basically formed an independent, complete, and initially large-scale industrial system.

At present, the production of coal-based activated carbon products at the two major bases accounts for about 90% of the country's coal-based activated carbon production; the production of nutshell activated carbon is mainly in Hebei Province; The production of wood activated carbon is mainly concentrated in Fujian, Jiangxi, southern Zhejiang and northeastern regions. (3) Product application The scope of application of activated carbon has been concentrated in the food, pharmaceutical, military, chemical and other industries from the 1970s, and has been widely used in water treatment. By 2007, China's activated carbon production enterprises have increased from dozens in the early 1980s to more than 300 at present, with a total production capacity of about 500,000 tons, ten types of activated carbon, and more than 100 brands, including coal. Now it has become the world's largest coal-based activated carbon producer.

The coal-based activated carbon is generally a macromolecule. Coal charcoal generally sinks to the bottom faster, while coconut shell activated carbon floats in water for a longer time. Coconut shell activated carbon has a small-molecule pore structure. Identification method of real and fake coconut shell activated carbon:

Because coconut shell Graphite Electrode in Different Size carbon is much more expensive than coal-based activated carbon, and the material of the finished activated carbon is generally not easily recognized by the general public. 2. As the activated carbon adsorbs water molecules to reach saturation It will gradually sink into the bottom of the water when the weight is increased. 3. The shape of coconut shell activated carbon is generally broken granules and flakes, and the shaped activated carbon, such as columnar and spherical activated carbon, is mostly coal-based carbon. 4. The weight in the hand is obviously lighter than coal activated carbon

Megosztás a facebookon

High power Graphite Electrode

in recent years, these countries and regions, especially Singapore and Europe, For environmental protection reasons, the activated carbon industry has been declining a High power Graphite Electrode lot, and with this gradual decline, China's imports of activated carbon from these countries and regions will gradually decrease.

The big ones are Hong Kong, South Korea, Japan, Philippines, Indonesia, Vietnam, and Malaysia. The annual import volume reached more than 4,300 tons, accounting for about 2008. On the one hand, of course, due to the steady and high-speed development of China's overall economy in recent years, the demand for activated carbon has increased rapidly.

It is expected that until 2005, there will be a steady small growth trend. Because domestic special activated carbon products cannot meet the domestic market demand, the prices of these imported advanced activated carbons Surprisingly high for a long time. Although the overall production capacity of China's activated carbon industry is among the best in the world, The production structural contradiction that cannot be changed at all in the short term, the production of some new types of activated carbon, especially advanced activated carbon, is far from keeping up with its rapidly expanding demand. Regarding the price trend of imported advanced activated carbon, imported premium products have always had higher prices compared to domestic products.

In the past, the largest suppliers were the United States, Hong Kong, Taiwan, and some countries in Western Europe. It is mainly various types of advanced activated carbon, and granular activated carbon accounts for The largest proportion; due to the rapid growth in demand for advanced activated carbon, the volume of activated carbon imports soared in 2001 to 6,300 tons, about 9.6 million US dollars; in 2002, the volume of activated carbon imports reached a record 9300 tons, about 13. Reduced by 5%; due to the industrial transfer of developed western countries, internationally renowned activated carbon companies in the United States, Japan, and Europe have increased their investment in activated carbon in these countries. In the decade of the 1990s, China's activated carbon imports increased by an average of about 8

Megosztás a facebookon

With China's accession to the WTO, activated carbon produced in China has been purchased and used in large quantities by countries around the world for its superior performance and price. However, regardless of the shape of granular activated carbon, cylindrical activated carbon, or spherical activated carbon produced by using coal as a raw material or fruit shell or wood as a raw material, the dust attached to its surface cannot be completely removed, especially the basic On the premise of maintaining the original adsorption characteristics of activated carbon, remove dust adhered to the surface of activated carbon.

For a long time, the activated carbon dust-free technology that the market has been calling for has not been successfully developed. People have tried to wash the surface of activated carbon with water washing and wind blowing. Although there are certain effects, due to the friction between the activated carbon particles and the friction of the air flow on the surface of the activated carbon, new fine powders are formed. Therefore, the above method cannot fundamentally solve the problem. People have also tried to cover the activated carbon with high-molecular substances, but they have been disturbed by the original physical adsorption capacity and specific chemisorption capacity of the activated carbon.

Therefore, the industry's investment and attention to this technology is increasing day by day. However, unfortunately, the issue of energy consumption has not yet attracted enough attention from the industry. According to data, the energy consumption of the same product in China is 11 times that of Japan, and activated carbon may be one of them. The reason is that, on the one hand, people feel that it is running at a small profit, and on the other hand, they do not know where to start to improve economic efficiency.

It is at least incomplete to simply emphasize that low-price sales. Since the objective existence of competition is a well-known fact, the market cannot be transferred artificially, so it can only start with reducing energy consumption. Reducing energy consumption can reduce costs and increase benefits for enterprises, and energy saving is a long-term plan for national development for the benefit of the country and the people.

Megosztás a facebookon