Material · draft · confidence 0.87
Generated from the Hyphae knowledge graph. Drafted by
claude-sonnet-4-6
Fine coke particles (typically <6 mm in size) separated from lump metallurgical coke during screening after quenching. Coke breeze is a byproduct of cokemaking and coke handling; it lacks the lump size and mechanical strength required for direct use in the blast furnace burden. It is used primarily as a fuel in iron ore sintering, where it provides the heat needed to partially fuse fine iron ore particles into the porous agglomerate (sinter) that can be charged into a blast furnace.
Common forms
- Dry coke breeze (screened product)
- Wet coke breeze (from wet quenching operations)
Common sources
- Coke screening after pushing and quenching in cokemaking
- Coke handling conveyors and transfer points (mechanical breakage)
Composition
Similar to metallurgical coke: ~87–92 wt% fixed carbon (dry ash-free), ash ~8–13 wt%, sulfur <1 wt%, volatile matter <1 wt%.
Properties
- size: Typically <6 mm (some operations define breeze as <3 mm or <10 mm depending on plant standards).
- use_as_sinter_fuel: Standard addition rate in iron ore sintering: approximately 40–55 kg coke breeze per tonne of sinter produced.
Connections
Outgoing
- Manufactured by → Cokemaking — Coke breeze is a byproduct of coke screening after pushing and quenching.
Incoming
- Produces ← Cokemaking — Fine coke particles (<6 mm) separated during post-quench screening. Used as fuel in iron ore sintering plants.