Determination of real density of graphite electrode

By:Yvonne Aug 10, 2020
density of graphite electrode
The true density of graphite electrode specimen is the mass per unit volume of specimen without porosity.
The true density of graphite electrode can be determined by X-ray diffraction method and density bottle method. The former is generally used in scientific research, while the latter is widely used in production testing, and is also applicable to the determination of true density of carbon raw materials.
Method will dry graphite electrode sample pieces below 0.15 mm, according to 3 g, in the density of 25 mL bottle, add 15 mL distilled water, on the sand bath (or electric heating board) boil 5 min sample of pore gas, remove the density bottle cooling to room temperature, adding boiling and cooling to room temperature in advance of distilled water to the density bottle scribed line, the density bottle in 20 ℃ + 1 ℃ water bath for 20 min, density bottles of liquid level should be below the water bath liquid level, the last adjustment to the scribed line, take out the density bottle, with a dry towel dry the bottle water, quickly weighed in the balance. The true density is calculated by the following formula:
Dw/dt = m (m + m1, m2)
Where dt is the true density, g/cm3; M is sample quality, g; M1 is the mass of water added to the density bottle, g; M2 is the mass of the density bottle with water and sample, g; Dw is the density of water at 20℃, g/cm3.
In addition to water, as the infiltrating medium there are ethanol, butanol benzene, kerosene, etc., these media is better than water infiltration, the measurement accuracy is slightly higher, but volatile and combustion. In addition, vacuum method can also be used to remove the gas in the sample hole, under the condition of maintaining a certain vacuum degree, the true density can be determined (see the determination of the apparent porosity of the carbon block for vacuum exhaust method).
►Graphite electrode features: Graphite electrode density
Graphite electrode features: Graphite electrode density
  • Specification for use of graphite electro

    Specification for use of graphite electro

    Welcome to use graphite electrode, we will serve you wholeheartedly. Please read the electrode manual carefully to help you use correctly.... ...Read More>>

  • China

    China's graphite electrode and needle cok

    In June 2021, China's graphite electrode exports maintained steady growth, and the total exports from January to June reached 214,600 tons.... ...Read More>>

  • China

    China's graphite electrode and needle cok

    In May 2021, the export volume of China's graphite electrode was 34,600 tons, with a year-on-year increase of 30.53%. From January to May 2021, China's export of graphite electrodes totaled 178,500 tons, an increase of 25.07% over the same period last year. Main exporting countries of graphite elect... ...Read More>>

  • India

    India's graphite electrode market prices

    June 2021. Graphite electrode market prices rise in India. The price of UHP600 will rise from Rs 290,000 / ton to Rs 340,000 / ton. HP450mm electrode price increased from Rs 225,000 / t to Rs 275,000 / t (22% increase). And the delivery time has been extended to September.... ...Read More>>

  • China graphite electrode, needle coke mar

    China graphite electrode, needle coke mar

    In April 2021, China exported 32,900 tons of graphite electrode, 17,100 tons of oil-based needle coke and 12,200 tons of coal-based needle coke. ... ...Read More>>

  • What is the function of graphite electrod

    What is the function of graphite electrod

    Graphite electrode is mainly used in electric arc furnace steelmaking and LF furnace refining, consumption of more than 80% of the graphite electrode. Electric arc furnace steelmaking is the use of electric current through the graphite electrode and metal between the high temperature of the arc to h... ...Read More>>