- Quicklime is metered from a storage bin into the slaker using a gravimetric or volumetric feeder.
- Gravimetric (weight-based) feeders are preferred because they automatically compensate for bulk density variations (typically 5–15%) to ensure uniform and accurate flow.
- Quicklime discharges directly from the feeder into the slaker inlet.
- The slaker converts the quicklime into hydrated lime slurry.
- The feed rate is controlled manually or automatically based on:
- Slurry level in the slurry surge tank beneath the slaker, or
- A process demand signal (such as pH).
How does the lime feeding and slaking system work?
