IBA Processing

Core Processing Operations

Storefield operates specialized facilities to transform raw IBA into sustainable construction products:

IBA Offtake: Utilising our own vehicles, we collect IBA from incinerators 24/7, 365 day per year, giving incinerator operators unrivalled service levels.
Conditioning & Maturation: Raw ash is stockpiled for several weeks to allow for "maturation," a chemical stabilization process that reduces leaching potential and prepares the material for grading.
Metal Recovery: Using advanced screening, magnets and eddy current separation, we remove ferrous and non-ferrous metals from the minerals.
Aggregate Grading: The remaining minerals are screened and crushed to produce IBA Aggregate (IBAA). This material is graded to meet specific UK construction standards and such as the Series 600 and 800 specifications for Highway Works.

IBAA Type 1: Used as a high-quality sub-base for road construction and large-scale paving projects.
6F4 & 6F5 Capping: Coarser grades used for bulk fill and capping layers in civil engineering.
Concrete Constituents: Processed ash can be used as a replacement for primary aggregates in the manufacture of concrete blocks and pre-cast products.

Storefield’s IBA operations are governed by strict UK environmental standards:

Circular Economy: Processing IBA diverts approximately 20-30% of the input weight of Energy from Waste (EfW) facilities from landfills.
RPS 247 Compliance: In England, the use of unbound IBAA is managed under the Environment Agency's Regulatory Position Statement (RPS) 247, which ensures safe application in construction activities.

Sustainability: Using IBAA reduces the demand for primary quarried aggregates and lowers the carbon footprint of construction projects.
Cost-Effectiveness: Recycled aggregates often offer a competitive price point compared to virgin materials while meeting equivalent engineering performance standards.