---
title: "Pelletising kiln"
description: "A pelletising kiln indurates green iron-ore pellets — typically 9–16 mm diameter, formed by tumbling iron-ore fines with binder — into hardened pellets that can be charged to a blast furnace or direct-reduction plant. The two dominant designs are the grate-kiln (travelling grate followed by rotary kiln and annular cooler) and the straight-grate (the entire process on one continuous travelling grate)."
canonical_url: "https://sylio.co/glossary/pelletising-kiln"
last_updated: "2026-06-28T02:29:40.623Z"
---

A **pelletising kiln** indurates green iron-ore pellets — typically 9–16 mm diameter, formed by tumbling iron-ore fines with binder — into hardened pellets that can be charged to a blast furnace or [direct-reduction](/glossary/direct-reduced-iron) plant. The two dominant designs are the **grate-kiln** (travelling grate followed by rotary kiln and annular cooler) and the **straight-grate** (the entire process on one continuous travelling grate).

## Cleaning targets

- **Kiln-exhaust ESP or baghouse** — iron-oxide dust laden with bentonite binder
- **Cooler off-gas dust collection**
- **Pellet-handling silos and hoppers** — discharge bridging

## Sonic-horn fit

[Sonic horns](/glossary/sonic-horn) on pelletising-plant ESP and baghouse hoppers handle the fine, sticky iron-oxide-and-bentonite dust that conventional handling struggles with. Plants in iron-ore-producing regions (Brazil, Australia, Sweden, Canada, India, Russia, China) are growth markets for this duty.

## Related terms

- [Electrostatic precipitator](/glossary/electrostatic-precipitator)
- [Baghouse](/glossary/baghouse)
- [Rotary kiln](/glossary/rotary-kiln)
- [Sonic horn](/glossary/sonic-horn)