Expandable Natural Graphite Powder High Quality

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Qingdao
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100Ton kg/month

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Product Description:

1.Breif Introduction

 

Graphite /ˈɡræft/, archaically referred to as Plumbago, is a crystalline form of carbon, a semimetal, a native element mineral, and one of the allotropes of carbon. Graphite is the most stable form of carbon under standard conditions.

Therefore, it is used in thermochemistry as the standard state for defining the heat of formation of carbon compounds. Graphite may be considered the highest grade of coal, just above anthracite and alternatively called meta-anthracite, although it is not normally used as fuel because it is difficult to ignite.

The natural graphite using the chemical effect can existing compound inside. Under the high temperature let if decompose in short time then graphite’s volume rise to 100~~400 times.

This is called expandable graphite also called “flexible graphite”.

 

 2.Main Features

Character: high expandability, porosity, porosity holes, resistant range under the oxygen—free environment is between -200~~3000℃, and it is chemically stable under high temperature, pressure of radiation.

It is widely used in the sealed material, adsorbent material and in the lithium industry.

 

    3.Specification

 

 

%

Carbon

 

%

Volatile

 

%

Moisture

PH

 

Mesh

%

Particle size

Grades

KP32

85-99.9

13

1

200-400

3-8

32

up≥

80

KP50

150-300

50

KP80

100-200

80

KP100

100-130

100

KP-100

50-150

-100

under≥

80

KP-200

50-150

-200

4.FAQ

     Q: Can you supply samples for us?
     A: Yes we can send you sample with few quantity

 

 

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Q:What is the simple test method for graphite powder used in casting?
Mainly depends on its carbon content, hand stick a little bit on the white paper uniform, if there is a clear scratch is graphite powder
Q:Why is the battery electrolyte more potassium hydroxide and sodium hydroxide is less used?
Anode material of nickel cadmium batteries is a mixture of nickel hydroxide and graphite as anode material, sponge cadmium and cadmium oxide powder powder, the electrolyte is usually sodium hydroxide or potassium hydroxide solution. When ambient temperature is high, use a sodium hydroxide solution with a density of 1.17 to 1.19 (15 C).
Q:Whether the lubricating oil toner is coupled with the conductor?
But with graphite, it will make the metal contact sheet and the whole resistance to form the passage, rheostat can not change the role of resistance. I actually lubricate, that is, with cotton swabs dipped in lubricating oil, and then put a touch on it.
Q:Method for identifying iron powder, aluminium powder and graphite powder
1. with a magnet and dilute hydrochloric acid!2. direct use of hydrochloric acid, aluminum powder, gas faster; iron powder moderate; graphite powder does not respond!
Q:How to deal with graphite powder? Anyone recycle it?
Graphite powder is an important industrial raw material, there is a recovery, but the graphite powder you said should be a waste in the production of surplus, quality is better than before, but the graphite powder prices, some specialized recycling of the graphite powder, graphite powder is not a professional manufacturer of recycling, is the original mineral for graphite the raw material, want to help to you, hope to adopt, thank you.
Q:The difference between silicone and silicone?
Silicone grease and silica gel although only two words in the literal sense, and all the thermal materials, but two things is completely different. Relatively speaking, the scope of the grease has a slightly wider, need to fit almost any cooling conditions; and because the silica gel once it is stuck on difficult to remove, so most of the time is used in some occasions only need one-time adhesion, heat sink such as graphics memory and memory of the particle particle. The main use of silica gel is bonding agent. We need to buy is the main heat conduction effect of silicone grease, you can not buy the wrong.
Q:Why can graphite powder conduct electricity?
Pure graphite in nature is not there, which often contains Si02, A1203, Fe0, CaO, P2O5, Cu0 and other impurities. These impurities often appear in quartz, pyrite, carbonate and other minerals. In addition, there are water, asphalt, CO2, H2, CH4, N2 and other parts of the gas. Therefore, the determination of graphite, in addition to the determination of fixed carbon content, but also the simultaneous determination of volatile and ash content.
Q:Refractive index and absorbance of graphite powder
I have already said, the color change, that change the material inside, you have not had the measured absorbance of the substance determination in you have set the wavelength of the sum of the original material, but a new generation of absorption material and the residual absorbance. The original substance must have been reduced, and its contribution to absorbance is correspondingly reduced, but the newly formed material may have a stronger absorption at this wavelength, so the overall result is an increase in absorbance. If you want to use absorbance analysis, you must select a suitable wavelength so that only the material you wish to measure at this wavelength is absorbed without interference from other substances.
Q:How to measure the conductivity of powdered graphite?
The conductive effect of graphite powder is an important factor in making conductive products, so it is very important to know the conductivity of graphite powder.Graphite powders have high electrical conductivity. And stone toner conductivity is an important factor in graphite powder conductive products. There are many factors affecting the conductivity of conductive graphite powder, such as the proportion of graphite powder, external pressure, humidity of the environment, humidity and even light.
Q:Can graphite powder be used for concrete?
Generally, stone toner is not used for concrete.There is no standard used or not used in this respect.Individuals believe that in order to form black concrete, it is feasible to add a small amount of graphite powder to concrete, but it should be proved to be in conformity with concrete standards and shall be reported to the business management department for approval. In other cases, even graphite powder can be used for concrete and is also a waste of resources. From the point of view of resource saving, graphite powder should not be used in concrete.

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