P21.4
Spray Drying Slurry Preparation
Procedure 35 of 40 · Chapter 21 · §21.2.2
1 table 0 notes
Table 1
| Step | Ingredient | Weight % (as charged) | Solids Contribution (%) | Function | Temperature (°C) |
|---|---|---|---|---|---|
| 1 | Water | 30.0 | 0 | Slurry medium | 50–60 |
| 2 | Caustic soda (50%) | 2.1 | 1.05 | Neutralizing agent | 50–60 |
| 3 | LABSA (96%) | 16.0 | 15.36 | Primary surfactant | 55–65 |
| 4 | Sodium silicate (34%) | 29.5 | 10.03 | Binder, buffer | 50–60 |
| 5 | Soda ash light | 10.0 | 10.00 | Builder, alkalinity | 50–60 |
| 6 | STPP | 10.0 | 10.00 | Chelating builder | 50–60 |
| 7 | CMC | 1.5 | 1.50 | Anti-redeposition | 45–55 |
| 8 | Sodium sulfate | 23.4 | 23.40 | Filler, density control | 45–55 |
| 9 | Optical brightener (CBS-X) | 0.02 | 0.02 | Whiteness | 45–55 |
| — | Total slurry | 100.0 | ~60 | — | 50–60 |
| Post-tower | AEO-9 (nonionic) | 1.0 | 1.0 | Wetting agent | Atomized onto beads |
| Post-tower | Fragrance | 0.2 | 0.2 | Odor | Atomized onto beads |
| Post-tower | Enzyme (Savinase) | 0.3 | 0.3 | Stain removal | Dry-mixed with beads |