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Industrial Mixer Capacity: Working Volume, Fill Rate and Batch Size
release time:
2026-09-15
Learn how working volume, fill rate, bulk density and batch cycle determine the right industrial mixer capacity for your process.
Industrial Mixer Capacity: Working Volume, Fill Rate and Batch Size
Industrial mixer capacity is often misunderstood because total vessel volume is not the same as effective working volume. Choosing equipment only by a nominal liter value can lead to poor circulation, long mixing times, inconsistent batches or unnecessary oversizing.
Total volume versus working volume
Total volume is the physical space inside the vessel. Working volume is the practical amount of material that can be mixed effectively. The appropriate fill level depends on mixer geometry, material flowability, density, liquid addition and the amount of free space required for circulation.
When requesting a quote, specify both the desired batch mass and the material bulk density. This lets the supplier calculate a suitable working volume rather than guessing from a nominal capacity.
Calculate the starting volume requirement
A simple starting point is:
Required working volume = batch mass ÷ bulk density
This is only a starting calculation. A process with multiple ingredients, liquid addition, density differences or aeration may need additional headspace. The recommended fill range should be confirmed against the selected mixer type.
Why fill rate affects mixing quality
- Underfilled mixers: material may not engage with the agitator consistently, reducing circulation.
- Overfilled mixers: material movement can be restricted, increasing cycle time and motor load.
- Variable batch sizes: may require a mixer with a wider usable fill range or a different production strategy.
Match capacity to production output
Batch size alone does not define hourly output. Consider loading time, mixing time, liquid addition, discharge, cleaning and changeover. A smaller mixer with short, repeatable cycles can sometimes meet the same output target more efficiently than a large vessel with long turnaround.
The DLH Small Ribbon Mixer is suited to smaller or pilot batches, while the DJH Double-Shaft Paddle Mixer is designed for rapid batch mixing. The appropriate option depends on your material and required cycle.
Examples from the DEYUE capacity tables
| Model | Reference working volume | Power | Speed |
|---|---|---|---|
| DEH-20 laboratory mixer | 5–15 L | 3 kW main motor | 120 r/min |
| DLH-100 small ribbon mixer | 35–60 L | 2.2 kW | 58 r/min |
| DJH-1000 paddle mixer | 400–600 L | 11 kW | 33 r/min |
| DLH-30000 ribbon mixer | 10,000–15,000 L | 110 kW | 17 r/min |
These reference points cover laboratory development, pilot production and large industrial batches. DEH is suited to small-scale formulation work, while DLH, DPH and DJH families cover larger powder, granule, feed, fertilizer, food additive, chemical and building-material processes.
Information to include in a capacity inquiry
- Minimum, normal and maximum batch mass
- Bulk density of each main ingredient
- Target batches per hour or per shift
- Required mixing time and discharge time
- Whether the process is batch or continuous
- Any future expansion requirement
Contact us with your batch mass and material density for a working-volume recommendation.
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