MMD sizer stations at Mae Moh: design and maintenance notes for mine planners
Reviewed by Joe Ashwell
First reported on International Mining – News
30 Second Briefing
MMD Group has delivered two new Sizer Stations to the Mae Moh lignite mine in Thailand for the Electricity Generating Authority of Thailand (EGAT), extending a multi-phase upgrade from conventional crushers to modern mineral sizing. The stations use MMD’s twin-shaft sizer technology to handle variable lignite feed while controlling product top size for downstream power plant requirements. For mine planners and maintenance teams, the shift to modular sizer stations implies different layout, foundation loading, and wear-part strategies compared with traditional primary crushing plants.
Technical Brief
- Latest stations form part of a “long line” of MMD units already operating at the site.
Our Take
Lignite appears only sporadically in our mining coverage compared with metals, so repeat equipment orders at Thailand’s Mae Moh lignite mine signal that life-extension and efficiency upgrades at existing coal assets are still attracting capex even as greenfield coal projects remain constrained.
For MMD Group Ltd, multiple sizer stations at a single operation such as Mae Moh typically translate into long-term parts and maintenance exposure, which can be strategically more valuable than one-off greenfield supply contracts in more volatile metals markets.
EGAT’s ongoing investment in bulk materials handling at Mae Moh suggests that, in Thailand, grid operators are still planning around lignite-fired baseload in the medium term, which has implications for how quickly gas and renewables will need to scale to displace this capacity.
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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