Types of mill include the following:

Manufacturing facilities

Categorized by power source

Watermill A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling (grinding), rolling, or hammering. Such processes are needed in the production of ...

, a mill powered by moving water *

Windmill A windmill is a structure that converts wind power into rotational energy using vanes called sails or blades, specifically to mill grain (gristmills), but the term is also extended to windpumps, wind turbines, and other applications, in some ...

, a mill powered by moving air (wind) *

Tide mill A tide mill is a water mill driven by tidal rise and fall. A dam with a sluice is created across a suitable tidal inlet, or a section of river estuary is made into a reservoir. As the tide comes in, it enters the mill pond through a one-way ga ...

, a water mill that uses the tide's movement *

Treadmill A treadmill is a device generally used for walking, running, or climbing while staying in the same place. Treadmills were introduced before the development of powered machines to harness the power of animals or humans to do work, often a type o ...

or treadwheel, a mill powered by human or animal movement ** Horse mill, a mill powered by horses' movement

Categorized by not being a fixed building

Ship mill A ship mill, more commonly known as a boat mill is a type of watermill. The milling and grinding technology and the drive ( waterwheel) are built on a floating platform on this type of mill. "Deutsches Museum: Ship Mill", The Deutsches Museum ...

, a water mill that floats on the river or bay whose current or tide provides the water movement *

Field mill (carriage) A field mill, also known as a camp mill, was a premodern vehicle which acted as a mobile mill used for grinding grains, which had the very practical use of feeding a moving army. History Later Zhao In the ''Yezhongji'' (鄴中記) ('Record of A ...

, a portable mill

Categorized by what is made and/or acted on

* Rice mill, processes paddy to rice *

Bark mill Bark mills, also known as Catskill's mills, are water, steam, horse, ox or wind-powered edge mills used to process the bark, roots, and branches of various tree species into a fine powder known as tanbark, used for tanning leather. This powder ...

, produces tanbark for tanneries * Coffee mill *

Colloid mill A colloid mill is a machine that is used to reduce the particle size of a solid in suspension in a liquid, or to reduce the droplet size in emulsions. Colloid mills work on the rotor-stator principle: a rotor turns at high speeds (2000 - 18000 RPM ...

Cider mill A cider mill, also known as a cidery, is the location and equipment used to crush apples into apple juice for use in making apple cider, hard cider, applejack, apple wine, pectin and other products derived from apples. More specifically, it r ...

, crushes apples to give cider * Flotation mill, in mining, uses grinding and froth flotation to concentrate ores using differences in materials' hydrophobicity *

Gristmill A gristmill (also: grist mill, corn mill, flour mill, feed mill or feedmill) grinds cereal grain into flour and middlings. The term can refer to either the grinding mechanism or the building that holds it. Grist is grain that has been separat ...

, a grain mill (flour mill) *

Herb grinder An herb grinder (or simply, a grinder) is a cylindrical device with two halves (top and bottom) that separate and have sharp teeth or pegs aligned in such a way that when both halves are turned, material inside is shredded. Though the manufac ...

Oil mill An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated ...

, see expeller pressing,

extrusion Extrusion is a process used to create objects of a fixed cross-sectional profile by pushing material through a die of the desired cross-section. Its two main advantages over other manufacturing processes are its ability to create very complex ...

Ore mill In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the process of separating commercially valuable minerals from their ores. History Before the advent of heavy machinery the raw ore was broken up using ...

, for crushing and processing

ore Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 Apr ...

* Paper mill *

Pellet mill A pellet mill, also known as a pellet press, is a type of mill or machine press used to create pellets from powdered material. Pellet mills are unlike grinding mills, in that they combine small materials into a larger, homogeneous mass, rather t ...

Powder mill A powder mill was a mill where gunpowder is made from sulfur, saltpeter and charcoal. Milling steps Crude grinding and mixing operations such as the Frankford Powder-Mill of Philadelphia were a cottage industry until the industrial revolution ...

, produces gunpowder *

Puppy mill A puppy mill, also known as a puppy farm, is a commercial dog breeding facility characterized by quick breeding and poor conditions. Although no standardized legal definition for "puppy mill" exists, a definition was established in ''Avenson v. ...

, a breeding facility that produces puppies on a large scale, where the welfare of the dogs is jeopardized for profits * Rock crusher *

Sugar cane mill A sugar cane mill is a factory that processes sugar cane to produce raw or white sugar. The term is also used to refer to the equipment that crushes the sticks of sugar cane to extract the juice. Processing There are a number of steps in pro ...

Sawmill A sawmill (saw mill, saw-mill) or lumber mill is a facility where logs are cut into lumber. Modern sawmills use a motorized saw to cut logs lengthwise to make long pieces, and crosswise to length depending on standard or custom sizes (dimensi ...

, a lumber mill *

starch mill Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human diet ...

* Steel mill * sugar mill (also called a

sugar refinery A sugar refinery is a refinery which processes raw sugar from cane or beets into white refined sugar. Many cane sugar mills produce raw sugar, which is sugar that still contains molasses, giving it more colour (and impurities) than the w ...

), processes sugar beets or sugar cane into various finished products * Textile mills for

textile manufacturing Textile Manufacturing or Textile Engineering is a major industry. It is largely based on the conversion of fibre into yarn, then yarn into fabric. These are then dyed or printed, fabricated into cloth which is then converted into useful goods ...

: **

Cotton mill A cotton mill is a building that houses spinning or weaving machinery for the production of yarn or cloth from cotton, an important product during the Industrial Revolution in the development of the factory system. Although some were driven b ...

Flax mill Flax mills are mills which process flax. The earliest mills were developed for spinning yarn for the linen industry. John Kendrew (an optician) and Thomas Porthouse (a clockmaker), both of Darlington developed the process from Richard Ar ...

, for flax **

Silk mill A silk mill is a factory that makes silk for garments using a process called silk throwing. Traditionally, silk mills were concentrated in Japan, England, New Jersey, Pennsylvania, Italy and Switzerland. The silk throwing process Silk is a natur ...

, for silk ** woollen mill, see

huller A rice huller or rice husker is an agricultural machine used to automate the process of removing the chaff (the outer husks) of grains of rice. Throughout history, there have been numerous techniques to hull rice. Traditionally, it would be p ...

(also called a rice mill, or rice husker) is used to hull rice * Wire mill, for

wire drawing Wire drawing is a metalworking process used to reduce the cross-section of a wire by pulling the wire through a single, or series of, drawing die(s). There are many applications for wire drawing, including electrical wiring, cables, tension-loa ...

Ka mill - Sandy mill

Other types

* See :Industrial buildings

Industrial tools for size reduction and/or filtration

(See

comminution Comminution is the reduction of solid materials from one average particle size to a smaller average particle size, by crushing, grinding, cutting, vibrating, or other processes. In geology, it occurs naturally during faulting in the upper part of ...

, filtration) *

Arrastra An arrastra (or arastra) is a primitive mill for grinding and pulverizing (typically) gold or silver ore. Its simplest form is two or more flat-bottomed drag stones placed in a circular pit paved with flat stones, and connected to a center post ...

, simple mill for grinding and pulverizing (typically) gold or silver ore * Ball mill, a mill using balls to crush the material * Bead mill a type of

Mill (grinding) A mill is a device, often a structure, machine or kitchen appliance, that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes. There are many different ...

Burr mill A burr mill, or burr grinder, is a mill used to grind hard, small food products between two revolving abrasive surfaces separated by a distance usually set by the user. When the two surfaces are set far apart, the resulting ground material is co ...

or burr grinder, a mill using burrs to crush the material, usually manufactured for a single purpose such as coffee beans, dried peppercorns, coarse salt, spices, or poppy seeds *

Coffee grinder A burr mill, or burr grinder, is a mill used to grind hard, small food products between two revolving abrasive surfaces separated by a distance usually set by the user. When the two surfaces are set far apart, the resulting ground material is co ...

Conical mill A conical mill (or conical screen mill) is a machine used to reduce the size of material in a uniform manner. It is an alternative to the hammermill or other forms of grinding mills. As the name implies, the conical mill varies in diameter from wher ...

(or conical screen mill) * Cutting mill, a device commonly used in laboratories for the preliminary size reduction of materials * Disc mill (or disk mill) *

Edge mill An edge mill is a mill used for crushing or grinding in which stones roll around on their edges on a level circular bed. They were developed in China in the third century and are still used today in remote villages around the world. When the mill ...

End mill An end mill is a type of milling cutter, a cutting tool used in industrial milling applications. It is distinguished from the drill bit in its application, geometry, and manufacture. While a drill bit can only cut in the axial direction, most m ...

, a type of milling cutter used in milling in the machining sense *

Expeller Expeller pressing (also called oil pressing) is a mechanical method for extracting oil from raw materials. The raw materials are squeezed under high pressure in a single step. When used for the extraction of food oils, typical raw materials are ...

pressing (also called oil pressing) *

Hammermill A hammer mill is a mill whose purpose is to shred or crush aggregate material into smaller pieces by the repeated blows of little hammers. These machines have numerous industrial applications, including: * Ethanol plants (grains) * A farm mach ...

, a mill using little hammers to crush the material * IsaMill, an energy-efficient mineral industry grinding mill that was jointly developed in the 1990s by Mount Isa Mines *

Jet mill A jet mill grinds materials by using a high speed jet of compressed air or inert gas to impact particles into each other. Jet mills can be designed to output particles below a certain size while continuing to mill particles above that size, resu ...

, grinds materials by using a high speed jet of compressed air or inert gas to impact particles into each other. * Milling machine, a machine tool that performs milling (machining) *

Mortar and pestle Mortar and pestle is a set of two simple tools used from the Stone Age to the present day to prepare ingredients or substances by crushing and grinding them into a fine paste or powder in the kitchen, laboratory, and pharmacy. The ''mortar'' ( ...

Pin mill A pin mill is a mill that comminutes materials by the action of pins that repeatedly move past each other. Much like a kitchen blender, it breaks up substances through repeated impact. The mill is a type of vertical shaft impactor mill and consi ...

, a mill for achieving very fine particle sizes * Planetary mill *

Roller mill Roller mills are mills that use cylindrical rollers, either in opposing pairs or against flat plates, to crush or grind various materials, such as grain, ore, gravel, plastic, and others. Roller grain mills are an alternative to traditional ...

, a mill using rollers to grind or pulverize grain and other raw materials using cylinders * Rolling mill, for rolling (metalworking) ** Strip mill, a type of rolling mill *

Slitting mill The slitting mill was a watermill for slitting bars of iron into rods. The rods then were passed to nailers who made the rods into nails, by giving them a point and head. The slitting mill was probably invented near Liège in what is now Bel ...

, for slitting metal into nails *

VSI mill A VSI mill (vertical shaft impactor mill) is a mill that comminutes particles of material into smaller (finer) particles by throwing them against a hard surface inside the mill (called the wear plate). Any hard or friable materials can be ground w ...

, a mill with a vertical shaft that spins * Stamp mill, a specialized machine for reducing ore to powder for further processing or for fracturing other materials * Three roll mill * Ultrasonic disintegrator a type of

* Vibratory mill a type of

(vertical shaft impactor mill), a mill that comminutes particles of material into smaller (finer) particles by throwing them against a hard surface inside the mill * A wet mill performs

wet-milling Wet-milling is a process in which feed material is steeped in water, with or without sulfur dioxide, to soften the seed kernel Kernel may refer to: Computing * Kernel (operating system), the central component of most operating systems * Kernel ...

: steeps a substance in water to remove specific compounds *

Wiley mill Wiley mill refers to a specific group of grinding mills manufactured under the name Thomas Scientific. The term Wiley as it relates to cutting or grinding mills is a registered trademark of Arthur H. Thomas Company. These mills prepare materials fo ...

, a specific group of grinding mills manufactured under the name Thomas Scientific {{DEFAULTSORT:Mill types Lists of agricultural buildings Lists of industrial buildings !