Products / Weighing & Dosing
Loss-in-Weight Feeder — ±0.1% High-Precision Gravimetric Dosing for Battery Powders
Recipe-driven gravimetric feeding with non-stop refill, DCS/MES-native integration and contamination-safe contact parts for cathode and anode materials.
Product Overview
Every Gram Accounted For, Every Second of the Batch
In battery material production, the recipe is the product. A dosing drift of half a percent on a conductive carbon or precursor stream shows up downstream as inconsistent electrochemistry. The Bulk Pro loss-in-weight feeder treats dosing as metrology: the whole feeding assembly sits on a high-resolution load cell, and the controller continuously computes true mass flow — correcting screw speed in real time against drift, density shifts and bridging events.
When the hopper needs material, refill happens without stopping: the controller holds volumetric output for the seconds of top-up, then re-locks onto gravimetric control. The batch record never shows a gap.
- ±0.1–0.2% gravimetric accuracy, validated at FAT with your material
- Non-stop refill via gravimetric-pneumatic hold mode
- SS316L contact parts; PTFE / ceramic linings for iron-sensitive powders
- Native DCS/MES recipe, alarm and batch-genealogy integration
Engineering Features
Built Like Metrology, Rugged Like a Machine
True Gravimetric Control
High-resolution load cells and closed-loop speed control keep actual mass flow locked to setpoint.
Non-Stop Refill
Volumetric hold during top-up, then instant re-lock — no batch interruption, no record gap.
Contamination-Safe
Magnetic traps in the refill path and PTFE / ceramic linings protect iron-sensitive LFP and NCM streams.
Flow-Configured Feed
Screw, spiral and vibration formats with agitator hoppers for poor-flowing salts like LiOH·H₂O.
Recipe-Driven Batching
Multi-feeder batch coordination from the DCS — setpoints, tolerances and alarms per ingredient.
Ex & Inert Options
ATEX-ready execution and inert-gas purged hoppers for reactive ultrafine powders.
Technical Data
Specifications & Configuration Options
Typical envelope below; feed size and accuracy are confirmed by material testing.
Loss-in-Weight Feeder — Typical Data
| Dosing accuracy | ±0.1 – 0.2% gravimetric at steady state (material-validated) |
|---|---|
| Feed rate range | 0.5 – 10,000 kg/h (feeder size dependent) |
| Control principle | Continuous gravimetric with volumetric hold-mode refill |
| Hopper capacity | 30 – 500 L (custom silos available with anti-bridging discharge) |
| Product-contact materials | SS316L standard; PTFE / ceramic linings; high-gauss magnetic trap in refill path |
| Feed formats | Twin / single screw, spiral, vibration — selected per flow properties |
| Integration | Native DCS/MES recipes, alarms and batch genealogy |
| Options | ATEX execution, inert-gas purge, CIP, degassing refill, Ex-rated actuators |
| Ingress protection | IP65 control cabinet (IP66/IP69k available) |
| Communication | Modbus / Profinet / Ethernet-IP / 4–20 mA, native DCS |
| Drive power | 0.75–15 kW (feeder-size dependent) |
| Ambient range | −20 to +80 °C operation |
Typical Applications
- LFP / NCM / LCO cathode batching trains
- Conductive carbon and binder micro-ingredient dosing
- Graphite and silicon-carbon anode feeding
- Lithium salts with bridging tendency
Loss-in-Weight Feeder — FAQ
What Process Engineers Ask Before Buying
±0.1% to ±0.2% gravimetric accuracy at steady-state feed is achieved on battery powders after commissioning — validated during FAT with your material. Short-term accuracy during refill cycles is protected by gravimetric-pneumatic control so the batch never loses its mass reference.
When the hopper reaches its refill threshold, the controller switches to volumetric hold mode while a fast refill valve tops the hopper up — typically within seconds — then returns to gravimetric control. The DCS logs the transition, and refill frequency is tuned to your material's density and flow properties.
Yes. Screw, vibration and spiral configurations are selected per material — with PTFE or ceramic contact surfaces, agitator hoppers and anti-bridging discharge aids for powders like LFP, LiOH·H₂O or ultrafine precursors. We size the feeder from your material test, not from a catalogue curve.
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