Turnkey Bottom Ash (IBA) Sorting Solution for Incinerators

High-Efficiency Resource Recovery | Zero Landfill Waste | Maximized Plant ROI

As global urbanization accelerates, waste-to-energy (WtE) incineration has become the primary method for municipal solid waste management. However, the bottom ash (slag) produced after incineration is far from mere "waste"—it represents an untapped urban mineral deposit rich in recoverable metal resources, including iron, copper, aluminum, stainless steel, and trace precious metals.

Direct landfilling of IBA is no longer economically or environmentally viable. IbaSorting provides complete end-to-end dry and wet IBA sorting equipment designed to maximize metal value while converting residual inert slag into CE-certified secondary construction aggregates.

IBA Metal Recovery Process Flow

Our modular processing lines handle capacities ranging from 10 to 100 tons per hour (200 to 2000 tons per day). The system integrates multi-stage crushing, advanced magnetic separation, and high-precision gravity separation technologies to ensure zero loss of metal value streams.

1 Feeding and Primary Grading

Wet bottom ash feedstock is conveyed by a loader to a buffer hopper, then metered uniformly into a heavy-duty drum screen. This separates large waste pieces and oversized slag from the fine-grained material.

2 Crushing and Metal Release

Oversized slag is fed into the IBA dedicated crusher and slag cone crusher. This critical process shatters sintered ceramic slag blocks, releasing trapped trace precious metals.

3 Iron Metal Recovery

Large steel scrap is removed from the material using a deep-field belt electromagnetic separator. Simultaneously, a wet magnetic separator operates within the fine slurry to capture fine iron dust, achieving final purification of the sand material.

4 Non-Ferrous and Precious Metal Extraction

Iron-free slag precisely conveyed by vibrating feeders enters high-frequency eddy current separators to isolate aluminum, zinc, and crude copper. Residual heavy slurry undergoes processing through jigging machines and 6S-type shaking tables to recover fine copper, stainless steel, gold, and silver.

5 Aggregate Washing and Zero Liquid Discharge (ZLD)

Inert tailings undergo thorough chloride removal via a tailings scrubber before drying on a dewatering screen. Toxic wash water is directed to a sludge filter press, compressing slurry into dry cakes while recycling 100% of the water back to the plant.

Metal Raw Materials Recovered via IBA Process

✅ Ferrous Scrap: Rebar, engine blocks, and steel plates
✅ Non-ferrous metals (ZORBA): High-purity aluminum, zinc, and alloys.
✅ Heavy metals: Copper (brass, wires), stainless steel.
✅ Precious metals: Trace gold and silver in fine sands.
✅ Clean Aggregates: Washed and graded slag sand suitable for direct use in road subbases or brick manufacturing (compliant with GB/T25032-2010/European CE standards).

Why choose IbaSorting turnkey plants?

Industry-leading recovery rates	Synergistic primary crushing and multi-stage sorting ensure recovery rates far exceeding industry averages, with exceptional performance in fine metal recovery.
Rapid Return on Investment	High-purity recovered metals (manganese ore, copper) and significantly reduced landfill taxes typically enable payback within 10 to 18 months.
Environmental Compliance	The entire system employs physical separation technology, featuring a closed-loop water treatment system (zero liquid discharge) and enclosed dust control equipment, strictly adhering to global environmental regulations.
Complete EPC Services	We manufacture core equipment in-house and provide comprehensive engineering, procurement, and construction (EPC) services—from layout design to on-site commissioning and operator training.

Globally Proven Experience

We have successfully designed, manufactured, and commissioned dozens of large-scale IBA sorting plants worldwide, including:

✔ Constructing a 1,200-ton-per-day wet processing plant for a publicly listed environmental group
✔ Delivering a turnkey 1,000-ton-per-day IBA project for a state-owned waste-to-energy plant in Jiangsu, China
✔ A complete 1,000-ton/day slag sorting and aggregate production line in Vietnam
✔ Customized highly specialized 500-600 ton/day production lines for independent slag processing operators.

WtE Bottom Ash Processing Facility Layout

Unlock the latent value of bottom ash

Every ton of unrecycled slag represents lost profit. Our engineers will tailor high-output sorting solutions based on your waste-to-energy plant's specific capacity, footprint, and local environmental regulations.

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Incineration Bottom Ash Sorting Solutions