The recycled gypsum powder
The standard quality specification for the recycled gypsum powder is as follows:
| Criteria |
Demand |
| Cl (chlorid content) |
< 0.01% weight |
| PH |
7 < pH < 9 |
| Free moisture |
< 10% weight |
| Purity (content of CaSO4*2H2O) |
Max. 5% points (weight) less than what has been supplied to the market area during the last 20 yrs |
| Rehydration |
Max. 5% points (weight) less than what has been supplied to the market area during the last 20 years |
| Particle size |
Up to 13mm |
| Smell |
Odourless/neutral |
| MgO |
< 0.10% weight |
| Na2O |
< 0.06% weight |
On request customized quality specifications can be made for the powder.
Specification on particle size in the powder
The produced powder is very fine and virtually 100% pure. 70% of the particles have a size less than 1 mm. Customized sizes of the powder can be arranged.
