HOME — ASH-SLAG PROJECT
WASTE-TO-VALUE · TULA REGION · PILOT
ASH-SLAG PROJECT
Integrated processing of ash and slag — into high-strength expanded clay and metals
TULA REGION · ASH-SLAG PROCESSING SITE
Thermal opening of the ash-slag matrix and rare-earth concentrates
THE POINT
Coal ash and slag are not a cost — they are feedstock already mined, hauled and concentrated. The project shows how to monetize it: a construction product on the first loop, metals on the second.
The site is in the Tula Region, next to Cherepetskaya GRES. The base product is high-strength expanded clay from ash-slag waste. A parallel loop recovers rare, scattered and precious metals from a matrix already opened by industrial firing.
THREE LOOPS
Construction loop
High-strength expanded clay from integrated ash-slag processing. It substitutes natural aggregate in concrete and cuts rebar use — a product with structural demand.
Metals technopark
Selective recovery of Li, Sc, Nd, Dy and precious metals. The feedstock is already opened at 1100–1600 °C — extra CAPEX is not comparable with a classic rare-earth mine.
Energy loop
Gasification of unburnt carbon: syngas for on-site power. Tied to layer-by-layer mapping of ash-slag composition.
THE INDUSTRIAL CONTOUR
A processing plant is machine tools, lines, dust, heat, force-torque and metrology. Principled talks on machinery support sit under Key events. A live site where industrial sensors run in a real process — not on a bench.
THE SCIENCE CHAIN
The construction loop rests on an industrial process sheet. The metals loop rests on RAS institutes: composition, beneficiation, sorption.
Chemical and mineralogical mapping of ash-slag by layer. Gasification of unburnt carbon — the energy-loop link.
Industrial flowsheets for technogenic mineral feedstock: gravity, flotation, chemical concentration of rare earths.
Selective metal recovery: sorption, membranes, electrodeposition. The same school that leads the perovskite program.
AXIONIT sorbents and turnkey recovery modules. IPCE chemistry packaged as a unit on the ash-slag site.