Graphite is a covalent semiconductor and metal intermediate half of the metal, inherently good conductivity, thermal conductivity, and most of the molten metal does not react, high temperature state is not deformed (up to 27.. C) and with the temperature increases the electrical conductivity and thermal conductivity, strength is significantly increased (mechanical strength at 1800 C is two times at room temperature), low thermal expansion coefficient than metal, as the ideal material can be widely used in powder sintering industry. The use of graphite mold powder sintering industry began in the early 70s, accompanied by geological exploration, coal exploration and mining, oil exploration and drilling, highway cutting, especially the rapid development of granite and marble mining and cutting industry, demand a substantial amount of diamond alloy material and hard alloy materials increased demand for graphite sintered die with the graphite sintered die matched with the increases. This situation has started since the end of 70s, preliminary statistics, annual domestic need 9000000 sets of graphite mold, the annual amount of 2500 tons. At the same time as a branch of the graphite material, its specifications and materials are gradually standardized and the trend of the series

　　With the exploitation of marble, granite marble cutting, the need for the cutting of the highway and so on. So in the end of 70s there was a square of processing and growth of graphite mold, processing different types of saw blades, that is divided into. 350,. In 400, 450, 600, 1200, in 1400, 1600, 1800 specifications, with the corresponding specification requires alloy, graphite sintered die and different types. On the shape of the graphite sintering mold can be divided into single groove double groove and combination of molds and so on.

　　The purity of the sintered graphite is not as strict as that of the high purity graphite. In simple terms, the material removal characteristics of graphite should have, as their body heat, we must also have some resistance to pressure in heating condition, so it must have certain mechanical strength.

　　The small capacity of the battery has been successfully applied in human life, further research and development of new environmentally friendly battery suitable for large-scale energy storage, development and utilization of new energy sources, will have great social and economic significance. All vanadium redox flow battery can be regarded as the representative of the new energy storage battery, compared with other batteries and it has a unique advantage, and therefore by researchers at home and abroad. At present, the vanadium battery has been abroad applied to wind power plant, power station power peaking and solar photovoltaic demonstration operation. But the development of vanadium battery is still limited, the electrode material is a very important factor.

　　The electrode material is mainly divided into metal electrode and carbon electrode, wherein the carbon electrode with good stability reflects the greater advantage, and the carbon electrode, graphite felt materials with its advantages of real surface area is much larger than the geometric surface area and occupies the dominant position.

　　Using concentrated sulfuric acid liquid phase oxidation and air oxidation method to activate the graphite felt, it was found that the electrochemical performance of the graphite felt can be greatly improved.

　　The surface treatment of graphite felt electrode for vanadium battery was carried out by electrochemical oxidation method, and the charge discharge performance of the assembled battery was excellent.

　　The main change of electrochemical treatment is the ratio of O/C and the number of oxygen containing functional groups on the carbon fiber surface of graphite felt,especially the amount of COOH.

　　Treated graphite felt as electrode, the battery showed good charge and discharge performance.

　　The superfine graphite powder used in lubricating greaser is the graphite powder which is specially used for production of lubricating grease, this superfine graphite powder is a very good lubrication graphite powder, its particle size is micron, therefore, the superfine graphite powder used in lubricating greaser has the advantages of good lubrication,good performance of high temperature resistance and the corrosion resistance, the superfine graphite powder lubrication grease have a very good application in lubricating grease production areas .

　　The use of the superfine graphite powder in lubricating grease can improve the service life of lubricating grease effectively. it uses natural graphite flake as raw materials and made by special processing, the has inherited the superior lubricating properties of the natural graphite flakes, we add the superfine graphite powder in the production process to enhance the properties of lubricating and high temperature resistance, it improve the service life of lubricating grease and reduce the replacing of the lubricating grease and create more value for industrial production enterprises .

　　The superfine graphite powder used in lubricating greaser has special oxidation resistance, self lubrication, and adhesion under the high temperature conditions, the graphite powder is mainly used in the field of industrial lubricating, It have played an important role in lubrication and attrition reduction, it can form the lubricating film in the surface of the frictional machines to reduce the friction, improve the lubrication performance and reduced the temperature caused by friction, it can avoid the mechanical burn and appearing the phenomenon of clamping, the superfine graphite powder can improve the quality of lubricating grease, it makes the application range of the lubricating grease more widely and the service life much longer.

　　Our company can provide all kinds of graphite powder which is in different application.

　　Electrode material is one of the key materials for all vanadium redox flow battery. Graphite felt material due to the large real surface area, good stability and occupy the leading position. But the graphite felt material is poor in hydrophilicity, and the electrochemical activity is not good enough. This paper on the graphite felt electrode respectively chromic acid oxidation method, mixed acid electrochemical oxidation method and hydrothermal ammoniation method for processing vanadium redox flow battery to improve its activity.

　　The chromic acid oxidation, hydrophilicity and electrochemical activity of graphite felt electrode significantly enhanced, The increase of oxygen functional groups on the carbon fiber and the surface gully increased, the former increased the carbon fiber surface to participate in the VO2+/VO2+ electrode reaction, which increased the contact area of vanadium ion and electrode.

　　Compared with other chemical power supply, vanadium battery has obvious advantages, the main advantages are as follows:

　　1 power: by increasing the number of single cell and electrode area, you can increase the power of the vanadium battery, the current U.S. commercial demonstration of the power of the vanadium battery has reached 6MW.

　　2 large capacity: increase the volume or improve the vanadium electrolyte concentration can increase consumption, up to more than gwh.

　　3 high efficiency: because the electrode catalytic activity of vanadium battery is high, and the positive and negative active substances are stored in positive and negative electrolyte tank, self discharge consumption, energy conversion efficiency as high as 75%, far higher than the lead-acid battery.

　　In a lot of electrode materials, carbon electrode has a great advantage in its good stability, and the graphite felt material is dominant in the real surface area. But the graphite felt surface activity is not good, poor hydrophilicity; commercial graphite felt, the conductive properties of imported graphite felt good, graphitization degree is high, but the price is expensive; graphite felt while the cost is low, but the degree of graphitization of low conductivity is poor.

　　Vanadium battery as the current strong momentum of development of green energy storage battery, has broad prospects for development in large-scale energy storage. However, in the process of vanadium battery research, the research of electrode materials is one of the key constraints. The electrode material must have the characteristics of stability, performance in strong acid medium and low resistivity, good conductivity, high mechanical strength, high electrochemical activity, and electrode materials at present is not up to the above requirements, can not meet the actual needs of the long-term work of vanadium battery.

　　Carbon materials due to its good conductivity and corrosion resistance, many researchers of various carbon materials by charge discharge experiments in vanadium electrolyte, found that graphite rods, graphite plate as cathode in the etching phenomenon, glassy carbon material surface electrochemical irreversibility, polyacrylonitrile based graphite felt the best performance. Through the experiment, it is very important to the polyacrylonitrile based graphite felt electrode surface modification.

　　Polyacrylonitrile based carbon fiber with high strength, high modulus, high temperature resistance, corrosion resistance, fatigue resistance, low coefficient of a series of excellent creep resistance, electrical conductivity, heat transfer and thermal expansion.

　　At present, the domestic market is not on the sale of carbon felt carbon felt, because the main use is as a thermal insulation material. The raw materials of PAN based carbon fiber carbon fiber is non graphitic structure, carbon content more than 90%, the carbon fiber in 10m.Cm resistivity magnitude, the resistivity is relatively large, and the carbon fiber surface energy is low, and the water wettability, contact angle, surface is hydrophobic, and without any the carbon fiber is not suitable for vanadium battery electrode.

　　Processing time should not be more than 2 hours, and the electrochemical activity of graphite felt will decrease with the increase of treatment time in the process of acid treatment of graphite felt.

　　Carbon is one of the most common natural elements, carbon compounds bond and structure is extremely rich, expanded graphite is a kind of new carbon material. In early 1860s, Brodie natural graphite with sulfuric acid and nitric acid and other chemical reagents were found after heating, expanded graphite, but its application in only after death the beginning. Since then, many countries have launched the expansion of research and development of graphite, made a major scientific breakthrough. Expanded graphite is a kind of porous material like prepared from natural flake graphite, so called graphite. Natural flake graphite is a layered crystal, each layer of carbon atoms. With a strong covalent bond formed macromolecular reticular plane, and between the layers with weak binding force in Van Edward, a strong oxidizing agent under the action of mesh plane Molecules into plane macromolecules with positive charge, resulting in a polar H2SO4 molecule and hydrogen sulfate and other negative ions of expandable graphite formed into the graphite layer, also called graphite intercalation compounds (graphite, intercalation compounds, G ICs). Due to the expansion process, formed a unique network hole, than the large surface area, high activity and produced fresh surface

　　The expanded graphite pore developed mostly in large pores, so easy to absorb large molecules, the resistance to oxidation and corrosion. In less than 450 degrees Celsius in air oxidation; in addition, concentrated nitric acid, aqua regia fuming sulfuric acid and high temperature, a few potassium permanganate strong oxidizing agent, corrosion resistance the radiation resistance. Long term exposure can withstand the neutron ray, beta ray and gamma ray and other radioactive rays without decomposition, deformation, aging; the expanded graphite has thermal conductivity resistance, good self lubricity, impermeability, high and low temperature resistance, flexibility, resilience and excellent properties

　　The wear resistant graphite sealing ring has the following obvious advantages:

　　The graphite seal ring no radiation no pollution. The flexible graphite does not contain harmful ingredients to the human body, but asbestos products has the radiation hazards, and it will pollute the environment.

　　The graphite sealing ring has heat resistance property. The flexible graphite strengthened composite gasket can enhance high temperature of 1650 DEG C, even if the chemical equipment melted, it is still safe and sound. But the crystallization water inside the asbestos products will be broken down at 500 degrees and it will be efflorescence powder and loss of efficacy.

　　The graphite sealing ring for a wide range of application. The flexible graphite sealing ring in addition to strong oxidizing acids, it can endure most of the chemical medium including for radioactive chemical medium, but the asbestos product adaptability is poor, it can not be used for radioactive medium. we require the connection part is not insulated in some chemical tower, heat exchanger, etc., the flexible graphite sealing ring can do, but the asbestos products can not.

　　The graphite sealing ring is easy to use. The coefficient of the flexible graphite gasket is only a half of the asbestos products coefficient , that is, to tighten the screws strength can be much smaller to achieve the same sealing effect,the flexible graphite in addition to the above obvious characteristics, but also it has excellent sealing performance, good compression, characteristics of good elasticity and oxidation resistance, it has strong self lubrication and plasticity and it has good electrical conductivity, density ratio, etc., it can be produced to all kinds of pipeline and the flange gasket of all kinds of adjustment of diesel engine and compressor etc..

　　In the global energy crisis and environmental pollution under the background of governments on the development and utilization of key technology and energy related very seriously, new energy countries vigorously develop clean and renewable energy to reduce the traditional. To develop new energy resources, energy storage is the key. With the application of new energy sources such as solar energy and wind energy, the research of new energy storage technology with high efficiency, long life and low cost is especially important.

　　The graphite felt electrode was modified by the method of constant current step activation, and the high performance carbon electrode material was prepared.

　　As the graphite felt has the advantages of high surface area, good chemical stability, low price, good conductivity, electrode materials have been widely used in electrochemical capacitor and redox flow battery of these large energy storage devices.

　　But the surface of the carbon material operation on the surface of microporous electrode directly, containing hydrophilic group is relatively small, and most of them are hydrophobic organic groups of water, so the surface wettability is poor, difficult to penetrate into the surface of the electrode electrolyte, not easy to form electric double layer, the carbon materials can not achieve the theory specific capacitance value.

　　It is found that the carbon material after several physical and chemical methods of surface modification, will generate some oxygen containing functional groups, the increase of material wettability, increase the effective surface area, and increase the specific capacitance of carbon materials. Therefore, research on surface modification of carbon materials to carry out a large number of methods, scholars at home and abroad are mainly used in gas phase oxidation, liquid phase oxidation, anodic oxidation, plasma oxidation, microwave oxidation etc..

　　Activated carbon is an amorphous carbon which is black powder，granular, massive or honeycomb, it also has a regular array carbon crystal. Except the carbon, the activated carbon also contains two kinds of admixtures: one is the combination of chemical elements, mainly hydrogen and oxygen, these elements are due to incomplete carbonization and the residue in the carbon, or in the process of activation, non carbon and activated carbon surface chemical foreign combination, such as when it is activated by the water vapor , the surface of the active carbon is oxidized or water vapor oxidation; another kind of admixture is ash, it is the inorganic part of the carbon ; the ash in the activated carbon is easy to cause two pollution.

　　The elemental composition of activated carbon , above 80%-90% composited by carbon , which is the reason for the hydrophobic adsorption of activated carbon.

　　The main raw material of activated carbon can be almost all organic materials which is rich in carbon , such as coal, wood, shell, coconut shell, walnut shell, apricot shell, coconut shell etc.. The carbon material is converted into activated carbon by pyrolysis at high temperature and under certain pressure in activating oven.

　　The activated carbon is widely used in industrial and agricultural production, such as CAUSTIC-FREE, ethylene desalted water, catalyst carrier, water purification and sewage treatment of petrochemical industry; power plant water treatment and protection of the electric power industry; chemical industry chemical catalyst and carrier, gas purification, solvent recovery and oil decolorization, refining; food beverage industry, wine, liquor And food msgrefining, decolorization; gold extraction solution, recovery of gold industry; environmental protection industry wastewater treatment, waste gas and harmful gas treatment, gas purification; cigarette filter tipwood flooringmoisture, smoke flavor, control of automotive gasoline evaporation pollution and related industries, various impregnating agent liquid preparation etc.. Activated carbon will be an excellent development prospects and broad sales market in the future.

　　Carbon brick Is mainly used for refractory brick of blast furnace hearth, carbon brick lining life determines a life. 1950s - the former Soviet Union into China, until the end of the 80s, there is little research on blast furnace carbon brick, has been used in the former Soviet Union led China's ordinary brick masonry, short service life of blast furnace. In late 80s, the development of iron making technology quickly, blast furnace smelting intensity is greatly improved, the original ordinary brick has not met the needs of blast furnace smelting, blast furnace hearth life decreased to 4 in 5 years. At the same time and effect of BF Blast furnace carbon brick in foreign countries, China began to develop on the block of attention, has developed a variety of new blast furnace carbon brick. Such as self baking carbon brick, semi graphite carbon brick, microporous carbon brick, high conductivity graphite brick. The successful development and application of the brick, make our BF Carbon Brick production technology and product quality has made great progress, is gradually catch up with the world level.

　　Our semi graphite carbon brick and microporous carbon brick and the quality level of similar product abroad, can completely replace the similar foreign products. Semi graphite carbon brick to further improve the anti iron corrosion resistance, improve thermal conductivity, improved alkali resistance, improved micro porosity index. The development direction of blast furnace is to improve the thermal conductivity of microporous carbon brick and further improve the micro porosity index, the development of super microporous carbon brick.