Metso divests sulphuric acid and gas cleaning to MAIRE: flowsheet impacts for miners
Reviewed by Tom Sullivan
First reported on International Mining – News
30 Second Briefing
Metso has agreed to sell its roasting, sulphuric acid and gas cleaning solutions business to Italian technology and engineering group MAIRE S.p.A., which will integrate the assets into its Nextchem division. The portfolio includes process technologies for sulphuric acid plants and off-gas cleaning commonly used in copper, nickel and fertiliser operations, shifting these flowsheet-critical capabilities from a mining OEM to a downstream process specialist. For miners and metallurgical plant owners, future brownfield upgrades to acid plants and gas cleaning systems are likely to be engineered and serviced through MAIRE/Nextchem rather than Metso.
Technical Brief
- Transaction scope covers roasting, sulphuric acid and gas cleaning technology, engineering and related service activities.
- MAIRE will embed the acquired offering into its Nextchem business line focused on process technologies.
Our Take
In our database, Metso’s recent activity skews towards core comminution and filtration technologies (e.g. Italbronze acquisition and tailings filter presses at Skouries), so divesting roasting and sulphuric acid assets to Italy-based MAIRE suggests a deliberate tightening of focus around mineral processing rather than broader process-plant scope.
The sale to MAIRE, whose Nextchem arm is active in process and energy-transition technologies, likely keeps the roasting and gas-cleaning IP within a process-engineering ecosystem, which may reassure miners needing continuity of support for legacy sulphuric acid plants while Metso concentrates on grinding and tailings solutions.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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