hammermøller

Hammermøller is a Danish term that most commonly refers to a hammer mill, a device used to grind or pulverize materials by means of rapidly rotating hammers housed in a grinding chamber. The term can also occur as a Nordic surname or as part of place names in Denmark and surrounding regions.

Operation involves a rotor fitted with multiple hammers that swing or are fixed to strike incoming material. The impact creates fracture and attrition, and the material is typically forced through a perforated screen or grate that controls particle size. Performance depends on rotor speed, hammer arrangement, feed rate, and screen size, as well as the wear of liners and hammers.

Common applications include agricultural processing of grain and feed, biomass pretreatment for bioenergy, wood processing for fiber or particleboard production, and mineral or chemical processing where bulk solids need rapid size reduction. Hammermills are valued for their simplicity, ability to handle various materials, and relatively low maintenance, but they can be energy-intensive and produce more fines and noise compared with other mills.

Historically, hammer mills have been developed from simple beating mills and evolved into modern designs during the 19th and 20th centuries. In Nordic contexts, hammermøller may also be encountered as a surname or part of geographic names, reflecting historical occupations associated with milling or hammering.