1, For the refractory material: graphite article having properties of high temperature and high strength, the metallurgical industry mainly used to manufacture a graphite crucible, commonly used in the steel ingot of graphite as a protective agent, a metallurgical furnace lining.

2, As the conductive material: the electrode, the cathode brushes, carbon rod, carbon tubes, mercury positive converter, graphite gaskets, phone parts, television picture tube coatings used for manufacturing in the electrical industry.

3, For wear and lubrication materials: graphite as a lubricant in the machinery industry often. Lubricants are often not on the premise of high speed, high temperature, high pressure use, and the wear-resistant material may be graphite (a) 200 ~ 2000 ℃ temperature at high sliding speeds, no lubricating oil work. Many aggressive media delivery device, widely used graphite materials piston cups, seals and bearings, do not need adding oil when they run. Graphite is a lot of good milk metalworking lubricants (Roberts, trombone) is used.

4, Graphite has good chemical chaos. Through special processing of graphite with corrosion resistance, good thermal conductivity, low bleed characteristics penetration, it is used extensively for the production of heat exchangers, reaction tank, condenser, burning towers, absorption, coolers, heaters, filter, pump equipment. Widely used in petrochemical, hydrometallurgy, acid production, synthetic fibers, paper and other industrial sectors, can save a lot of metal materials.

5, For forging, foundry, die and pyrometallurgical Materials: graphite because of thermal expansion coefficient, and thermal shock resistant to change, as the glass molds, the use of graphite black metal castings get accurate dimensions, smooth surface finished rate, without processing or minor processing can be used, thus saving a lot of metal. Produced carbide powder metallurgy process, usually graphite material die and sintering of porcelain boat. Monocrystalline silicon crystal growth crucible, regional refining vessel, stand fixtures, induction heaters, etc. are processed using high-purity graphite. Also can be made of graphite graphite vacuum insulation panels and smelting base, high-temperature resistance furnace tubes, rods, plates, sheds and other cell components.

6,For the atomic energy industry and defense industry: Graphite has good neutron moderator for atomic reactors, uranium-graphite reactors are currently used more of a nuclear reactor. As used in nuclear reactor power reduction material should have a high melting point, is not chaos, performance erosion resistant, graphite can meet these requirements. As a nuclear reactor with high purity graphite, impurity content should not exceed dozens of PPM. Particularly wherein the boron content should be less than 0.5PPM. In the defense industry, but also with graphite parts manufacturing solid fuel rocket nozzle, missile nose cones, Astronauts equipment, insulation and anti-radiation materials.

7, Graphite can prevent boiler scale, the unit tests showed the water by adding a certain amount of graphite powder (with a ton of water, about 4 to 5 grams) to prevent fouling of the boiler surfaces. Also graphite coated on metal chimneys, roofs, bridges, pipelines can corrosion and rust.

8, Can be used for graphite pencil, paint, polish. After the graphite through a special process that can produce a variety of special materials for the relevant industrial sectors.

In addition, graphite is still light industry, glass and paper polishing agents and rust inhibitors, is to create a pencil, ink, black ink and synthetic diamond, diamond indispensable raw materials. It is a good energy-saving materials, the United States has used it as a car battery. Followed by the development of modern science and technology and industry applications of graphite is constantly expanding, and has become an important raw material in the field of new high-tech composite materials, has an important role in the national economy.

Graphite is one of the highest boiling point substances in nature melting, melting at 3 850 ± 50 ℃, boiling point is 4 500 ℃, and the boiling point of silicate minerals are 2 750 ℃ (quartz boiling point) or less, well above the boiling point of graphite impurities contained in the boiling point of the silicate. This feature is the basis of high-temperature purified graphite reason perish.

The graphite powder directly into a graphite crucible and heated in inert gas and freon protective gas purification furnace to 2 300-3 000 ℃, a period of time, impurities in the graphite will overflow to achieve graphite purification. High-temperature method commonly used by flotation or more chemically purified 99% of the carbon-carbon graphite as raw material, can be purified graphite to 99.99%, for example, by further improving the process conditions, improve the crucible quality, purity up to 99.995% the above.

High-temperature method can produce more than 99.99% of ultra-pure graphite, but requires to be fixed carbon materials in more than 99 percent, and the equipment is expensive, the huge investment, production scale has limited electric heating technology is demanding and require isolation from the air, or else graphite when the temperature was raised to 450 ℃ in hot air begins to be oxidized, the higher the temperature, the greater the loss of graphite. Only very high quality graphite specific industries (such as defense, aerospace, etc.) using the high-temperature method for small batch production of high-purity graphite.

A lot of research and production practice show that, in many purification methods graphite, although the advantages and disadvantages, but alkali acid method because the production process is simple, easy production environment, lower production costs, does not produce toxic and hazardous waste, conventional waste fluid handling easier and more advantageous features. After roasting and leaching ore solve shorten time, improve the purification effect, to properly resolve issues such as waste water treatment, alkaline acid method may well be the best way to purify graphite industrial production.

Graphite specially processed later, you can create a variety of special materials for the relevant industrial sectors. With the development of modern science and technology and industry applications of graphite is constantly expanding, and has become an important raw material in the high-tech field of new composite materials, has an important role in the national economy. Here are some common graphite deep processing products:

(1) High-purity graphite: widely used in nuclear reactor shielding and reflective materials, solid fuel, rocket nozzles, aerospace equipment parts, advanced refractory and paint, pencil of light industry, electrical industry, carbon brush, electrode in battery industry, fertilizer industry catalyst.

(2) Graphite milk: milk into a graphite tube, forging graphite milk, milk graphite drawing, saving energy and reducing wear additives, etc., were prepared for the conductive paint color picture tube parts, metal forging and hot extrusion die lubricants, metal cold cast coated type agents, mold release agents glass bottles, metal wire drawing lubricants, lubricants antifriction agent.

Such as CRT graphite milk with good adhesion, pore resistance, moisture resistance, corrosion resistance, electrical properties, physical and chemical properties of the coating and stable performance. Widely used in Hitachi, Toshiba, Panasonic, GE, Philips, CPT technology, special coating material is black and white kinescope tube technology. Forging graphite milk has the ideal temperature lubrication, adhesion, stripping easy, chemically stable, non-corrosive, non-toxic, improve molding quality, prolong tool life and other characteristics. Black, non-ferrous metal processing ideal temperature hot stripping lubricants, forging, metal embossing and other industries widely used. Saving energy and reducing wear additive with a strong reduction of friction and wear resistance, heavy extreme pressure, thermal oxidative stability of lubricating oil, no oxidation corrosion and chemical wear, energy efficient, good compatibility, the continuation of lubrication. Improve operating conditions, reduce noise and eliminate smoke and reduce the content of harmful substances in exhaust.

(3) Expandable graphite and flexible graphite products: heating agent for the production of ingot casting, production packing and sealing gaskets, such as flexible graphite sheet, graphite sheet, graphite packing ring, graphite packing, high-strength composite sheet and so on.

(4) Carbon and graphite products: mainly used for heat-resistant refractory, insulation materials, conductive and resistive materials, lubrication and antifriction materials, corrosion-resistant materials, containers and molds. Such as graphite electrodes, graphite mold, carbon rod arc, spectral analysis of the electrode rod, graphite anode plate, electrical carbon brushes, graphite tube, graphite bearings.

(5) Graphite crucible: means for melting a variety of metals.