ASR Gasification Explained: Turning Shredder Residue Into Energy and Materials
ASR Gasification
Gasification is the thermal decomposition of a material in a controlled, oxygen-limited environment, and applied to automotive shredder residue it does what mechanical recycling cannot: it separates the mixed residue into energy, metals and a stable mineral product in a single processing step.
Instead of burning the material, a gasifier converts its organic fraction — the plastics, rubber and fibres — into a combustible synthesis gas, while the inorganic fraction separates into recoverable metals and a molten mineral slag.
How the Reference Plant Does It
Klean’s automotive-shredder-residue facility pairs fluidized-bed gasification with ash melting. Shredder residue is fed directly into the gasifier with no pre-treatment. The syngas fires the plant’s energy recovery, generating 17 MW of electricity from a 2 x 40 MW thermal platform, while the ash is melted into a vitrified slag.
The product slate is deliberately broad. Ferrous metals return to the scrap industry; copper, aluminium and stainless steel are sold to metal markets; the ground glass aggregate goes to construction; zinc-rich filter ash is recycled to the zinc industry. Nothing is simply discarded.
Why This Route Fits the Material
Gasification fits shredder residue because the material’s heterogeneity — the very thing that defeats sorting — does not matter to a process that separates by thermal behaviour. The result is a route that accepts the mix as-is and recovers its full value.
Learn More About ASR Gasification
- Automotive Shredder Residue Gasification Plant
- Solid Waste Recycling
- What Is Gasification?
- Feasibility Studies
Partner With The KleanTeam to Gasify Your Residue
Safe. Clean. Profitable. One Proven Partner.
Klean Industries has operated a commercial ASR gasification plant for over two decades — the proof that fluidized-bed gasification and ash melting turn shredder residue into energy, metals and aggregate at scale.
Klean’s Key Advantages:
- ✅ An operating ASR gasification reference plant treating up to 20 t/h of shredder residue.
- ✅ Thirty-plus years engineering commercial gasification and waste-to-energy plants.
- ✅ 3 recovered carbon black (rCB) plants built in India over the past 2 years.
- ✅ KBR added Klean’s proprietary TyreNova technology to its IP portfolio.
Ready to gasify automotive shredder residue at scale?
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