graphite electrode for Electric arc furnace

In the future, they will be further researched and developed as new functional materials in electromagnetics, temperature sensing, battery electrodes, and smart structures. As secondary and primary structural materials, it has been applied in many aspects such as recreation and sports. Since C / C is almost entirely composed of elemental carbon, it can withstand extremely high temperatures and extremely high heating rates. In addition, carbon fiber reinforced carbon (C / C), carbon fiber reinforced cement (CFRCon), carbon fiber reinforced metal (CFRM), carbon fiber reinforced ceramic (CFRCer), and carbon fiber have been developed in accordance with different characteristics.

The changes in resistance and other properties caused by structural changes are being researched and developed as new smart materials. Compared with resin, the metal matrix can greatly increase the use temperature of the material. More than half of the carbon fibers currently consumed are processed into final products from epoxy resin prepregs, and unidirectional prepregs account for 40% of the total carbon fiber consumption. Its thermal conductivity and electrical conductivity are better.

The materials used by humans have gone through natural materials, processed materials, and synthetic materials and entered the current fourth-generation composite material era. The high specific strength and high temperature thermal stability of C / C make it used as an ultra-high temperature insulation material and ablative material for spacecraft; because of its excellent abrasion resistance and high thermal conductivity, it is used as an aircraft and Brake materials for cars. In order to improve the molding processing efficiency and reduce costs to more effectively exert the fiber's reinforcing effect, two-dimensional and three-dimensional intermediate substrates with certain shapes have been developed successively

, such as prepregs and graphite electrode for Electric arc furnace. Due to the higher temperature and pressure during compounding, it is difficult to manufacture. In addition, carbon fiber sheet molding (CFSMC) and pellets (CFRTP) made of chopped fiber and nylon 66 and other thermoplastic resins have been developed for injection molding. In the future, it will open up a broader market in the fields of energy machinery, natural gas pressure vessels, and large blades for wind power generation. The metal will not burn. CFRM: Metal is a strong and tough isotropic material. The dimension is stable under wet conditions. 

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Generally, the theoretical expression of a compound formed by lithium in a carbon material is LiC6, and the theoretical specific capacity in stoichiometry is 372 mAh / g. When some metals, such as Sn, Si, Al, are embedded in lithium, a lithium-metal alloy with a high lithium content High power Graphite Electrode will be formed. PW series, BF series, nano-conductive materials, multiple composite anode materials for lithium-ion power batteries, etc.

According to its composition, it can be divided into: lithium transition metal nitride, transition metal oxide, and nano alloy materials. The charge and discharge curves are very flat and there is no discharge hysteresis, but the capacity decreases significantly. For example, when Li3FeN2 is used as the negative electrode of LIB, the discharge capacity is 150mAh / g and the discharge potential is near 1. The theoretical value of LiC6 is 372mAh / g It is increased to 700mAh / g-1000mAh / g, so the specific energy of the lithium ion battery is greatly increased. In the field of lithium-ion battery anode materials, the company's lithium-ion battery anode materials have stood at the forefront of the new generation of domestically produced materials, representing the direction of graphite deep processing. Into.), 1,200 tons of artificial graphite anode materials (SAG series,

Its first discharge capacity is above 360mAh / g, its first efficiency is greater than 95%, and its compaction ratio reaches 1. Compared with tin oxide (SnO / SnO2), the cycle life of tin-based composite oxides has been greatly improved, but it is still difficult to meet industrial standards. There are many types of carbon materials. The company has an annual output of 1,800 tons of natural composite graphite (MSG, AMG, 616, 717, 818, etc

NAG series, 316 series, 317 series), 3000 tons of spherical graphite (SG), 5000 tons of natural micro-powder graphite and 600 tons of lithium manganate cathode materials are continuously expanding the production scale. Non-carbon anode materials In recent years, research on LIB non-carbon anode materials has also been extensive. The main problems of alloy anode materials are low efficiency and cycle stability for the first time. 

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Activated carbon is widely used Used in various aspects of industrial and agricultural production, such as alkali-free deodorization (refined desulfurization), ethylene desalinated water (refined fillers), catalyst carriers (palladium, platinum, rhodium, etc.2-0. Now activated carbon is based on the purpose, but we do not know that the purpose can actually be changed to millimeters.9mL / g, the number of pores is about 1020 / g, and the surface area of ​​all micropores is about 500-1500m2 / g, which is usually measured by the BET method, and it is also said to be as high as 3500-5000 m2 / g.

These mechanical properties directly affect the application of activated carbon, such as: density affects the size of the container; powdery carbon thickness affects filtration; granular carbon particle size distribution affects fluid resistance and pressure drop; crushability affects the life of activated carbon and waste carbon regeneration. For liquid phase adsorption of activated carbon • Tap water, industrial water, electroplating wastewater, purified water, beverages, food, pharmaceutical water purification and electronic ultrapure water preparation. High adsorption rate.02-1.

With the country's gradual emphasis on environmental protection, energy conservation and emission reduction, the continuous breakthrough of activated carbon oil and gas adsorption technology, I believe that in the next few years, the market for oil and gas recovery of activated carbon will surely develop rapidly. 2. Market competition analysis Compared with traditional coal columnar carbon, high-performance solvent recovery activated carbon has high specific surface area, rich effective pores, low ash content, light specific gravity, gas phase adsorption value, and CTC> 110%. The pore size distribution of the product is reasonable, which achieves the maximum adsorption and desorption, thereby greatly improving the service life of the product. It is mainly used in industries such as chemical industry, metallurgy, printing and dyeing, and rubber.

And oil and gas recovery. It is mainly monopolized by companies such as NORIT, Virtue Weike, etc. There is no industrial production in the country, and the technology is relatively backward. At present, the demand for solvent recovery market is more than 30,000 tons. Domestically, coal-based columnar activated carbon is mainly used. High-end activated carbon accounts for about 10-15%, which is mainly caused by the price gap. With the attention of national energy and energy, the integration of coal resources, and the introduction of resource taxes, the cost of coal-based carbon is rising and high-performance wooden columns 

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