Manufaturing technique of refractory products is similar with that of common graphtie prodcut. The basic process are as follows:

　　Selecting Raw Material → Heating Raw Material → Smashing → Compounding → Molding Biscuit → Drying →Presintering Biscuit →Rough Machining →Sintering → Final Machining → Inspecting→ Finished Product.

　　1. Selecting Raw Material

　　When peolple are selecting raw material, they should take application into consideration. Most raw material is chemical material, only a few raw material is raw mineral materials. Usually, we can get raw material from market. And some special raw material should be compound by people themselves.

　　In general，the purity of raw material is very high. For example, when people produce magnesia carbon brick, content of magnesium oxide should exceed 95% and content of flake graphite should exceed 92%. From a material point then, the purity of raw material should be as high as possible. However, nothing is evidable. High purity means high cost.Like producing magnesia carbon brick, If people ensure the impurity of iron trioxide below 0.35%, the final product must will be qualified.

　　2. Heating Raw Material

　　The material which is applied to manufacturing graphite refractory products, especially oxidised raw material, need to be heated previously. Heating process can be divided into two aspects: the one aspect s calcine, which means burning raw material under a lower temperature that below final maching temperature, which aims at removing volatile impurities and inclusions, reducing contraction of briquettes, and promoting the transformation of allomorphic crystal form; the other aspect is electric smelting, the procedure of which is melting raw material with electric-arc furnace, smashing raw material after cooling, which can improve control on Dimension

　　3. Smashing

　　Smashing is a really important procedure in the course of producing refractory products, whose objective is to change granularity of raw material. As for benefit of smashing procedure， it can sactter raw material so evenly that biscuit can be molded more easyly. What ‘s more, it can make solid-phase reaction ,which avail sintering under a high temperature circumstance and decreace firing temperature, become more throughly. Furthermore, it can expose more impurity, which increase the purity of raw material.

　　(To be continued)

Graphite is an allotrope of carbon, each carbon atom in the peripheral connecting also three carbon atoms (arrangement is multiple hexagon honeycomb) by covalent bonds with the covalent molecule is formed. Since each carbon atom emits an electron, the electrons can move freely, so that the graphite belongs to the conductor.. Graphite is one of the most soft minerals, and its use involves making pencil and lubricant.. Carbon is a non-metallic element, Latin Carbonium.

　　Graphite and its products has high strength, acid resistance, corrosion resistance and high temperature resistant, 30 DEG C and resistance to low temperature - 204 DEG C and other excellent properties, is widely application in metallurgy, chemical industry, petroleum chemical industry, high energy physics, aerospace, electronics and other aspects. The specific properties of graphite are roughly the following:

　　1. super high temperature resistance

　　Graphite melting point of 3850 + 50 DEG C, the boiling point of 42.5 DEG C, even the ultra high temperature arc ignition, weight loss is very small, coefficient of thermal expansion is also very small. The graphite strength increases with the temperature, and the graphite intensity is doubled at 2000..

　　2. graphite products have good thermal conductivity, thermal shock resistance. Graphite can withstand the temperature changes without failure, when the graphite is used in normal temperature, the volume of the graphite will change little, and the graphite will not produce cracks..

　　3. graphite products have chemical stability and corrosion resistance. Graphite has good chemical stability at room temperature, without any erosion of acid, alkali and organic solvent.

　　4. graphite products environmental health, no radioactive pollution, high temperature resistance. Carbon in 2000-3300 degrees high temperature environment after at least a dozen days and nights of graphitizing process to become a graphite. Therefore, graphite in the toxic and harmful substances have been released and exhausted, at least 2000 degrees or less is very stable.

　　5. graphite products have good adsorption. Carbon has good adsorption, so carbon is often used as adsorption material for the adsorption of moisture, odor, toxic substances, etc..

　　If you need graphite or carbon products , We interested in supplying those materials for you.As a leading Chinese graphite manufacturer and supplier, we specialize in providing high quality graphite material, carbon carbon composites and graphite parts.To buy graphite and carbon products please contact us and ask our sales manager for a quote.

  Graphite blocks is the widely used graphite material and be used in many industies , from the material it can be divied into carbon blocks and graphite blocks , the difference is if the blocks is with the procedure of the graphitization . and for the graphite blocks , from the moulding method , it can be divided into three major kinds , isostatic graphite blocks , moulded graphite blocks and vibracation graphite blocks .

　　Graphite Blocks are widely used in the Tooling (EDM), Mould making (EDM), and General Manufacturing industries. We can make it up to 3600mm long and 850 wide and 850 tall. The blocks are available in various specifications and size are as per different construction applications. Characteristics of Graphite Blocks. Graphite Blocks features in high bulk density, low resistivity, oxidation resistance, corrosion resistance, high temperature resistance and good electrical conductivity, etc.

　　Special features: High purity, fine grain, good performance of electrical conductivity and thermal conductivity, high density, good corrosion resistance, thermal shock resistance, thermal stability, high mechanical strength, low permeability, and good oxidation resistance

　　The raw material is capable of producing various semiconductor molds and radio tube.

　　Graphite blocks used for silicon carbide furnace, graphitization furnace and other metallurgical furnace, resistance furnace lining and conductive material, and the permeability of graphite heat exchangers.Widely used in electronics, metallurgy, chemical industry, steel and other fields, products of good quality, stable performance.

　　If you need graphite or carbon products , We interested in supplying those materials for you.As a leading Chinese graphite manufacturer and supplier, we specialize in providing high quality graphite material, carbon carbon composites and graphite parts.To buy graphite and carbon products please contact us and ask our sales manager for a quote.

　　Graphite and astronomical silicate material are computed using available laboratory and astronomical data. The exfoliation of graphite is a phase transition involving the vaporization of the intercalate in the graphite. Exfoliated graphite is an expanded graphite with a low density. It is noted that the magnetic dipole contribution to absorption in the infrared wavelengths can be important for conducting particles such as graphite. Formulas are given for evaluating electric and magnetic dipole cross-sections for small particles. Absorption cross-sections are evaluated for graphite and silicate particles with sizes between 0.003 and 1.0 microns, and wavelengths from 300 A to 1000 microns. On the basis of polarization profiles computed for both prolate and oblate graphite-silicate spheroids, it is concluded that interstellar silicate grain are predominantly oblate. Extinction curves are calculated for Mathis-Rumpl-Nordsieck graphite-silicate grain mixtures and are compared to observations. The model is found to be in good agreement with available infrared observations.

　　This paper reviews the process of the exfoliation of graphite and the exfoliated graphite material. It surveys the applications of exfoliated graphite, covers both reversible and irreversible exfoliation and reviews the methods and mechanism of exfoliation. Other topics include the structure and properties of exfoliated graphite, graphite foils, exfoliated carbon fibres and composites.

　　As a leading Chinese graphite manufacturer and supplier, we specialize in providing high quality graphite material, carbon carbon composites and graphite parts.We have specialized account managers and technicians for each customer who are aligned with their business and can design and deliver solutions and drawings to meet the customers requirements. Our value criterion clearly puts forward the view of customer: We put the customer at the heart of everything we offer.