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The combistoner MTCG is a high-throughput classifier and destoner. It efficiently separates stones, glass and other foreign objects from many types of grain, including wheat, durum, corn, rye, oats, barley and rice.

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Key benefits

Broad range of applications

Use the combistoner MTCG to clean many different types of grain including wheat, barley, maize, rye, oats and rice.

Energy savings of up to 30%

The standard MTCG uses fresh air. Add an optional air-recycling separator to reduce energy consumption by up to 30% compared to conventional destoners.

High throughput

The combistoner MTCG can handle up to 28 tons of grain an hour.

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How does the combistoner work?

The combistoner classifies and destones in a 2-step cleaning process

The combistoner is a highly efficient, high-throughput grain cleaner. It first classifies the grain into high-density and mixed fractions. The mixed fraction then moves onto the next step of the milling process. The high-density fraction is reprocessed in the destoner, where foreign objects such as stones, metal and glass are removed from the grain.

Wide range of throughput and applications

Use the combistoner to process many different grains

The combistoner cleans a wide range of grain, including wheat, barley, maize, rye, oats and rice. It also has a wide capacity range, processing between 10 to 28 tons of wheat an hour.


Add an optional MANW air-recycling unit to reduce energy

Fit an optional MANW air-recycling unit to reduce energy consumption by up to 30%, by returning filtered process air back into the process. The air-recycling unit also operates with a small exhaust air volume, central filtering system and aspiration system, saving space and investment costs. It can also reduce maintenance and downtime, by cleaning more small particles from the process air.

Key topics

Billions of people come into contact with Bühler technologies to cover their basic needs for food and mobility every day. Our motto is creating “innovations for a better world.” Find out more about our key topics.

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Application possibilities

The Bühler process

Efficient in every step of production

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