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Table 1. Product composition before and after applying the digestion agent
| Component |
Composition, wt%
|
|
Before
|
After
|
CaSO4·2H2O,
Ca(H2PO4)2·H2O, CaHPO4·2H2O |
63a |
55–65 |
| MgHPO4·7H2O |
|
15–25 |
| Vermiculite |
25
|
10–20 |
| CaF2, AlPO4, Fe2O3 |
|
<5 |
| Amorphous SiO2 |
|
2–5 |
| Chrysotile |
12 |
<1 |
| a CaSO4·2H2O (gypsum) |
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