Mixing, Blending & Industrial Batch Processing calculator
Powder Wet-Out Time Calculator
Plan the elapsed time for a powder wet-out operation already demonstrated in trials. Enter the powder charge, qualified feed rate, post-addition mixing and measured delays.
What this calculator does
- Schedule powder addition and a qualified wet-out sequence using measured feed and mixing times.
Formula used
- Powder addition time = powder charge ÷ qualified feed rate × 60
- Post-addition interval = qualified post-addition mixing + measured dispersion delay
- Wet-out sequence time = powder addition time + post-addition interval
- Window margin = available window − wet-out sequence time
Inputs explained
- Powder Charge: Weighed powder charge for the qualified formulation.
- Qualified Powder Feed Rate: Measured feed rate demonstrated with this powder and mixer.
- Qualified Post-Addition Mixing: Approved mixing duration after the last powder enters.
- Measured Dispersion Delay: Recorded additional checks, holds and approved dispersion adjustments.
- Available Wet-Out Window: Scheduled time from first powder addition through required checks.
How to use the result
- Best suited to powder addition Scheduling, qualified Wet-Out planning.
- Feed throughput alone cannot establish complete wetting, dispersion or hydration. Does not extrapolate to different powder properties, concentrations or mixer sizes.
Common questions
- Does this predict powder hydration? No. Hydration and dispersion endpoints require product-specific evidence. Enter a feed rate and post-addition duration demonstrated to satisfy your required endpoint.
- Is mixing during addition counted twice? No. The addition interval includes simultaneous mixing. Post-addition time starts only after the last powder enters.
- Can I use the feeder nameplate capacity? Use its measured, qualified rate for this powder and mixer. Feeding faster than the process can incorporate powder can create persistent agglomerates.
- What belongs in dispersion delay? Enter extra elapsed checking, holding or approved adjustment time recorded for this operation. Keep it separate from the qualified post-addition mixing duration.
Last reviewed 2026-10-01.