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Stirred mills

Stirred mills

Unparalleled performance and energy efficiency leadership

Metso Outotec leads stirred milling innovations with a wide portfolio and continues to be the industry standard in performance.

500+ installations worldwide

Up to 45% better energy efficiency

Up to 95% or greater uptime

Up to 50% reduction in plant footprint

Unparalleled performance leadership

Ideal for grinding finer products, stirred mills are known for their energy efficiency and compact design, reducing floor space requirements. These mills are based on gravity-induced and fluidized technologies, allowing for the optimum equipment solution for all comminution circuits covering secondary, tertiary, fine, ultrafine, regrind, and lime slaking applications.

Metso Outotec offers a wide portfolio of stirred milling technologies: Vertimill®, HIGmill™, and Stirred Media Detritor (SMD).

The Metso Outotec stirred mills are suitable for a large range of product sizes. The standardized range includes chamber units of up to 50,000 liters and the world’s largest industry units with up to 6,500 kW of installed power. Floor space use is optimized, which reduces investment costs, and installation is easy. All our stirred mills are part of the Planet Positive product portfolio, thanks to the sustainability benefits they deliver.

Mature by performance
Metso Outotec stirred mills continue to be the industry leader in performance and exceed expectations. With our energy efficiency, increased uptime and reduced plant footprint, find CAPEX and OPEX advantages compared to similar stirred milling technology. Even for brownfield applications, we make integration simple and quick.

Unique by experience
Metso Outotec has over 50 years of experience in testing, innovating and delivering stirred mills technology. This includes over 500 installations worldwide in diverse applications from an industry-leading portfolio.

Unmatched services offering
Metso Outotec not only delivers the mill that will optimize your operation but is with you from installation to the end of the mill lifetime. With a comprehensive parts and services offering, always expect maximum performance.

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Vertimill®

The Vertimill® is globally recognized as an energy efficient grinding mill. Through a low total cost of ownership, it brings substantial improvement to the profitability of concentrators. During the years, Vertimill® technology has proven to be efficient especially in secondary and tertiary grinding, regrinding, fine grinding, and lime slaking applications.

For more information - Vertimill® >

HIGmill™

The Metso Outotec HIGmill™ is an advanced, energy-efficient fine and ultra-fine grinding solution that utilizes proven technology. With the tall, narrow, vertical body arrangement, grinding media is evenly distributed and mineral particles remain in constant contact, significantly increasing grinding efficiency. It takes advantage of gravitational forces and GrindForce™ rotor technology to produce a finer grind for mineral liberation.

Find more information - HIGmill™ >

HIGmill-high-intensity-grinding-mill
Stirred Media Detritor (SMD) is a fluidized, vertical stirred mill designed for optimum grinding efficiency for fine and ultrafine grinding products. SMD’s feed size is typically 80% passing 100 µm and finer, but it can also handle coarser materials in various applications. SMDs have the capacity to operate continuously at full load power draw with no steel contamination of the product. They are suitable for both open and closed-circuit operation.
Stirred media detritor (SMD)

Stirred Media Detritor (SMD) is a fluidized, vertical stirred mill designed for optimum grinding efficiency for fine and ultrafine grinding products. SMDs have the capacity to operate continuously at full load power draw with no steel contamination of the product. They are suitable for both open- and closed-circuit operation.

Find more information - Stirred media detritor (SMD) >

Stirred mill plant units
Metso Outotec concentrator plant units bring flexibility & certainty to the forefront with industry leading plant configurations that seamlessly integrate operational performance and assure profitability with optimum risk management.
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Parts and services for stirred mills

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Materials successfully ground in stirred mills

  • Aluminum Oxide
  • Aragonite
  • Barite
  • Blast Furnace Slag
  • Calcined Bauxite
  • Calcite
  • Calcium Carbonate
  • Clay
  • Coal – oil
  • Coal – water
  • Coal Tar Sludge
  • Coke – oil
  • Copper Molybdenum
  • Copper Concentrate
  • Copper Ore
  • Copper Slag
  • Copper-Lead-Zinc Ore
  • Decanter Tar Sludge
  • Ferrite
  • Ferro Alloy
  • Ferro Manganese
  • Gold Ore
  • Gold Tailings
  • Graphite
  • Hydrated Alumina
  • Iron Oxide
  • Iron Sand
  • Kaoline
  • Lead Concentrate
  • Lead Zinc Ore Lime (slaking)
  • Lime Powder
  • Limestone
  • Magnesium Oxide
  • Magnetite Concentrate
  • Manganese Dioxide
  • Manganese Ore
  • Marble
  • Molybdenite
  • Molybdenum Conc.
  • Oil Sludge
  • Petroleum Coke
  • Phosphate Rock
  • Pottery Stone
  • Pyrite
  • Red Phosphorous
  • Rock Salt
  • Salt
  • Sand Iron
  • Sericite
  • Silica
  • Silica Sand
  • Slag
  • Strontium Ferrite
  • Sulphur
  • Talc
  • Uranium
  • Zinc Concentrate
  • Zinc Lead Ore
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