crystalloid Graphite Powder 32-500mesh

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Product Description:

Particle size:ranges from 500mesh to 32mesh;
Fixed carbon:85~99.9%;
Usage:refractory,additive,conductivity

Natural Flake Graphite (32-500mesh)

1) Specifications: The particle size ranges form 32-500mesh
2) Carbon content ranges from 80 to 99%.
3) Advantages: Perfect crystallization, thin flake, good flexibility, excellent chemical and physical properties, superior conductivity, self-lubricity and resistance to temperature, corrosion and hot shock, and much more.
4) Usage: Crystalline flake graphite is widely used as an essential nonmetalic mineral in almost all industries. It can be used as high-quality refractory material or coatings in metallurgical industry, black lead in light industry, carbon brush in electronics industry, electrode in battery industry and catalyst in chemical fertilizer industry, to name just a few. After being deep processed, crystalline flake graphite can be used to produce TV tube coatings, graphite friction reducing additives and many other high-tech products.

Main Technical Index: See tables attached.

Flake Graphite particle size ( mesh)

Particle size (unit:micron meter)

(Fixed carbon content)

32mesh

560


85%---99%

50mesh

300

80mesh

180

+100mesh

150

-100mesh

150

80%---99.5%

-200mesh

74



80%---99%

-325mesh

45

400mesh

35

500mesh

28

600mesh

23

(EXPANDABLE GRAPHITE)

8550250

9080230

8580200

9550250

85100150

9580200

Graphite sheet(paper)

Thickness

Width

Length

0.12-3.0mm

0.5-1.5m

25-60m


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Q:Graphite powder what is the difference?
Graphite is a isomer of carbon, chemical symbol C, non-metallic, non-toxic, relatively smooth, can be rubbed on the key, harmless to the baby.
Q:What kinds of graphite powder has it? What's the function?
Its main use focuses on sealing and lubrication, and stone toner is powder, is the basis of other graphite products
Q:What is graphite powder?
Graphite is soft, black and gray; greasy feeling, can piece of paper pollution. Hardness is 1~2, along the vertical direction with the increase of impurities, its hardness can be increased to 3~5. The specific gravity is 1.9 ~ 2.3. Under isolated oxygen conditions, the melting point is above 3000 degrees Celsius and is one of the most refractory minerals. Under normal temperature and chemical properties of graphite is relatively stable, insoluble in water, dilute acid and dilute alkali and organic solvent; different high temperature reaction with oxygen, carbon dioxide or carbon monoxide; only in halogen fluorine can react directly with elemental carbon; under heating, the graphite powder is easy to be oxidized under high temperature, acid; but with many metal reaction, formation of metal carbides, can smelt metal at high temperature.
Q:How to distinguish between iron powder, aluminum powder and graphite powder (pencil core powder), there are two ways
Method three: in reverse order with method(1) take a little powder and add dilute hydrochloric acid respectivelyIf bubbles are produced and green light is generated, the solution is iron powder (chemical equation Fe+2HCl = FeCl2+H2)The reaction is more intense, there are more bubbles, the color of the solution does not change, it is aluminum (chemical equation 2Al+6HCl = 2AlCl3+3H2)No obvious phenomenon is graphite powder (not reaction)(2) if the difference between the bubble phenomenon is not obvious, then two kinds of powder with magnetCan be the magnet is not attracted by the permanent magnet is iron powder; powder(high school can also use NaOH solution to identify iron aluminum, aluminum reacts to dissolve hydrogen, iron does not respond)
Q:Can I use super fine stone powder in grease or lubricating oil?
Can be pro, ultra-fine stone toner itself has a lubrication function, in Qingdao Huatai graphite section for grease and lubricating oil, you can look at, do not understand, you can ask me.
Q:Crystal graphite of graphite powder
Pure graphite flake graphite and high directional pyrolytic graphite, which have less defects and larger sizes, can generally be considered as perfect graphite single crystals. Considerable research has been done on the thermal conductivity of such graphite. Under compressive stress, the pyrolytic graphite above 3000K processing, the bulk density is 2.25g/cm, 2.266g/cm is close to the theoretical density of the single crystal, the half width of the diffraction peak (002) show only 0.4 degree angle (mosaic angle), is also very close to the theoretical value of zero. The thermal conductivity of this graphite is shown in table 1. These values are generally considered to represent the corresponding values for single crystal graphite. The thermal conductivity along two principal directions is denoted as lambda a along the layer, and is marked by lambda C along the vertical plane.
Q:For thermal grease skills, the more detailed the better
But this is not possible, the metal lid heat sink and CPU looks smooth, but with a magnifying glass, you can see many holes in metal surface concave stripes and irregular tunnel, lead contact surface with many gaps, these gaps are impeding heat dissipation, thermal grease is liquid, can fill the gaps. Improved radiating surface contact, the heat dissipating effect than when there is no good thermal grease. But if the thermal grease is too thick, it will become a film on the contact surface of the middle, but hindered the direct contact of metal, worse than not coated with thermal grease.
Q:The graphite powder production process and the graphite production process are introduced briefly Graphite powder production process, graphite production process, detailed technical parameters where?
According to the size of the crushed or broken material, the mill can be divided into coarse crusher, middle crusher, fine mill and superfine mill.
Q:Why is the battery electrolyte more potassium hydroxide and sodium hydroxide is less used?
The solution of potassium hydroxide at a density of 1.25~1.27 (15 DEG C) is used at temperatures below -15. For the purpose of taking into account the low temperature performance and the charge holding capacity, the sealed nickel cadmium battery adopts an aqueous solution of potassium hydroxide with a density of 1.40 (15 DEG C). In order to increase the capacity and cycle life of battery, usually adding lithium hydroxide amount in the electrolyte (per litre of electrolyte and 15~20g).
Q:Use of carburizing agents
The particle size is too fine, easy to burn, too coarse, float on the surface of liquid steel after adding, and it is not easy to be absorbed by steel. The particle size of 0.2-6mm in the induction furnace, the steel and other ferrous metal particles in 1.4-9.5mm high carbon steel, low nitrogen, particle size in 0.5-5mm, and according to the specific needs of the furnace smelting specific types of workpiece so the details of specific judgment and selection.

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