Nature Flake Graphite for Refractory Materials with Good Price

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Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 30 m.t.

Supply Capability:: 3000 m.t./month

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Specifications

High-purity graphite
High carbon graphite
Medium carbon graphite

Characteristics

Perfect crystallization, thin flake, good flexibility, excellent chemical and physical properties, superior conductivity, self lubricity and resistance to temperature, corrosion and hot shock etc.

Usage

Crystalline flake graphite is widely used as an essential nonmetallic material in almost all industries. It can be used as high quality refractory material or coatings in metallurgical industry, black lead in light industry, and carbon brush in electronics industry, electrode in battery industry and catalyst in chemical fertilizer industry. After being deep processed, crystalline flake graphite can be used to produce TV tube coatings, graphite friction reducing additives and many other high tech product

Payment term: DP / TT / LC at signt

$Nature Flake Graphite for Refractory Materials with Good Price$

Q:Why is there a range of electrode powder powder resistivity? The reasons for the high and low are not good.: Read millivolt values and sample height, calculated according to the formula P =UA/IL type resistivity. The resistivity of the conductor is in P, Omega - M; L for voltage measurement distance between two probes for m; A for the conductor cross-sectional area, m2; U, the voltage between two probes for the determination of voltage V; I the strength of the current flowing through the conductors, the resistivity of A. graphite is (8 ~ 13) * 10-6 (/m), high - low note inside magazines. For reference only!

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:Does the graphite powder cause explosion? If so, how to prevent the production of graphite products in the workshop?: Flammable dust is suspended in the air at an appropriate concentration to form dust clouds that are commonly called;All the solid matter which is fine powder is called dust. The dust that burns and explodes is called combustible dust; the dust floating in the air is called suspended dust; the dust deposited on the solid wall is called sedimentary dust.With explosive dust: metal (such as magnesium, aluminum); coal; grain (such as wheat, starch); feed (such as blood meal, fish meal); agricultural and sideline products (such as cotton and tobacco); forest products (such as paper powder, wood flour); synthetic materials (such as plastics, dyes).

Q:Know how the colloidal graphite powder comes in: There are two ways to make colloidal graphite: (1) mechanical method. Natural graphite is crushed and treated with hydrochloric acid and hydrofluoric acid to remove impurities. Added to the aqueous solution of tannic acid, which is repeatedly inverted into paste. Colloidal graphite can be obtained by adding a certain proportion of water and ammonia, and then by ultrasonic treatment to further reduce the particle size. (2) chemical method. After being purified and crushed, the natural graphite is added with concentrated nitric acid and concentrated sulfuric acid and water at 90 DEG C, and then obtained by cleaning, drying, adding water, ethanol, acetone and other dispersing agents to obtain colloidal graphite. Add stabilizer such as sodium oleate, sulfate and so on, so that graphite particles do not agglomerate. Ammonia transfers the graphite colloid to the gum solution and regulates the pH value.

Q:What mask should be used to prevent stone powder?: As enterprise owners, should actively take labor protection measures, do not mean this little money, because if workers suffer from silicosis, treatment and late payment of responsibility is the business owner himself. This runs the risk of.

Q:Graphite powder made of graphite oxide, how much weight gain?: The official name of graphite oxide is graphite oxide, or "graphite acid". It is a compound composed of carbon, hydrogen and oxygen elements with different mass ratio. Oxidized graphite can be prepared by treating graphite with a strong oxidizing agent. Of the products obtained, the highest degree of oxidation is a ratio of carbon to oxygen, between 2.1 and 2.9 yellow solid, and still retains the layered structure of graphite, but the structure becomes more complex.

Q:Why does an electromagnetic point timer not prick a needle and use toner paper?: Needles can increase friction! Will increase the error!

Q:The principle of a graphite missile: The graphite missile contains carbon fibers and is highly conductive. After the explosion of carbon fiber floats attached to the high-voltage lines immediately cause transformer short circuit burned, to destroy the enemy's power to.

Q:How to measure the iron content in graphite powder?: Take a certain amount of samples, adding dilute hydrochloric acid, excessive filtering and drying. The quality of the filter residue. By weighing the quality of the sample quality is the quality of minus slag containing iron. With this value divided by the sample quality, the mass fraction of iron.

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.

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