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The preparation process of coal-based granular activated carbon mainly includes two main steps: carbonization and activation. First, the raw material is carbonized at high temperature to convert it into a carbonaceous material; then, through activation treatment, its pore structure and specific surface area are increased, thereby improving the adsorption capacity.
Coal-based granular activated carbon is widely used in toxic gas purification, waste gas treatment, industrial and domestic water purification, solvent recovery, etc. Due to its efficient adsorption capacity and good regeneration, coal-based granular activated carbon plays an important role in the field of environmental protection.
The performance indicators of coal-based granular activated carbon include physical indicators (such as shape, appearance, specific surface area, pore volume, specific gravity, mesh number, particle size, strength), chemical indicators and safety indicators.
|
Item |
Parameter |
|
Appearance |
Amorphous granular, 8*30mesh, 12*40mesh, etc. |
|
Iodine (mg/g) |
700-1100 |
|
Ash content (%) |
<15, 5-10 for acid washed AC |
|
Moisture (%) |
<5 |
|
Hardness (%) |
>95 |
|
Shipping weight (g/L) |
450-550 |
|
PH |
9-11 |
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