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Chinese Test methods of activated carbon ash content

Sep. 25, 2021
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How to test the charcoal or activated carbon ash content ?different country will use similar testing method, here take Chinese Test methods of activated carbon ash content for a sample.

Chinese Test methods of activated carbon ash content

1 Scope

This standard specifies the method for determining the ash content of wood activated carbon.

This standard applies to wood activated carbon.

2 Method summary

The sample was ashed at (650 ± 20) °C for several hours, and the ash content was expressed as a percentage of the mass of the obtained ash and the mass of the original sample.

3 instruments

3.1 High temperature electric furnace, adjustable to (650 ± 20) °C.

3.2 30mL porcelain crucible.

3.3 Analytical balance, can be weighed to 0.1mg.

3.4 Dryer.

4 Operating steps

4.1 Place 30mL porcelain crucible in a high temperature electric furnace, burn to constant weight (about 1h) at (650±20) °C, place the crucible in the desiccator, and cool for 30min.

Weighing (weighed to 0.1mg).

4.2 Weigh 1 g of dry sample pulverized to 71 μm (precision to 0.1 mg) and place in 30 mL of porcelain crucible that has been burned to constant weight.

4.3 Feed the crucible into a high temperature electric furnace with a temperature not exceeding 300 °C, open the crucible cover, gradually increase the temperature, and ash to a constant weight at (650±20) °C.

5 Calculation of results

X=(m2 -m1 )/m×100 ....................................... (1)

Where: X - ash content, %;

M2—ash and niobium mass, g;

M1porcelain crucible weight, g;

M—sample weight, g.