Grinding Mills and Pulverizers Specifications

Help with Grinding Mills and Pulverizers specifications:

Applications & Features

	Industry or Material Processed:
	Your choices are...
	Abrasives / Ceramics		Size reduction equipment suitable for high hardness materials such as abrasives, ceramics or refractories.
	Chemicals / Fertilizers		Mills suitable for size reduction of fertilizers, waxes, salts or other inorganic or organic chemicals.
	Construction Materials / Cement		Cement, limestone, gravel, sand, brick, grog, clay, shale, asphalt.
	Food Processing / Grain		Equipment for size reduction and dispersion of solid and liquid-solid mixtures of food products such as grain, milk, dried potatoes, apples, sugar, spices, vegetables or other foods.
	Pharmaceutical / Cosmetics		Milling equipment specialized for cosmetic or pharmaceutical applications.
	Metallurgical / Foundry		Equipment for milling of metals, carbides, ferrosilicon additives, master alloys, slag or other components used in winning metals (smelting), alloying primary metal stock, producing powder metals or recycling scrap metal.  Foundry applications require milling equipment to reduce sand or shell material to suitable size for recovery or disposal.
	Mining / Ores / Minerals		Primary crushing and size reduction of ore and minerals for subsequent extraction processing.
	Paints / Adhesives		Equipment for grinding and dispersing paints, pigments, dyes and fillers.
	Wood / Pulp & Paper		Milling equipment for reducing wood or cellulose feeds into products or pulp for paper, paperboard or other paper products.
	Polymers		Mills suitable for processing plastics, elastomers, rubbers or other polymeric materials.  Shredders or cryogenic grinders may be useful if the materials are not brittle.
	Power / Coal & Coke		Reduction of coal or choke as well as ash in power generation applications.
	Sanitary		Milling and dispersion equipment for sanitary applications. The equipment is constructed of an easily sterilized material and is designed specifically for hygienic purposes such as medical, pharmaceutical, or food processing applications.  Usually the equipment is certified by a national or international organization (USDA, FDA, etc.), but this is not required.
	Waste / Recycling		Recycling, remediation, soil reclamation processing such as wastewater sludge milling or crushing of glass or metals wastes for recycling.
	Other
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Scale / Capacity

	Scale / Capacity:
	Your choices are...
	Lab / Pilot		Small-scale equipment for laboratory or pilot plant use with capacity ranges in the grams/hour, lbs/hour or kilograms/hour ranges. Pilot or small-scale production equipment provides larger capacity than lab scale equipment and gives a better indication of production process capability.
	Production		Large-scale equipment for plant use with higher capacities (100s lbs/hour or tons/hours) compared to lab or pilot scale equipment. The design is usually specialized for the process and product employed.
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Process Type

	Process Type:
	Your choices are...
	Dry		Mills or crushers size reduction of dry solids.
	Wet		Size reduction equipment moist materials, slurries or dispersions.
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	Feed:
	Your choices are...
	Batch		Equipment that receives a charge or batch of material, processes the material and then discharges the batch.  Media or ball mills are often batch type units.
	Continuous		Mills or crushers that can be continuously fed raw materials for processing.  Also, semi-continuous, in-line batch or fed-batch units.
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Equipment Types

	Equipment Types:
	Your choices are...
	Ball / Media Mill		Milling equipment that reduces particle size by tumbling a feed with grinding media such as balls, rods or other shapes.  Ball mills are typically wet, batch units.  Water or another liquids and additives aid the grinding process by reducing friction, deflocculating or cooling.  Media mills are also used to disperse a powder into a liquid product such as pigment in a paint base. Motion is imparted to the media through tumbling or rotating the vessel, stirring rods or vibration. Also known as pebble, rod, tube, compartment, tumbling, vibratory, stirred, dispersion, conical or tri-cone mills.
	Cone / Gyratory Crusher		Coarse crushers consist of a cone shape bowl with a gyrating central head.  Feed is crushed between the cone and head.  Dish and puck mills could be considered a laboratory version of this type of mill.
	Granulators / Cutter / Screen Mill		Dicers, cutters, crushers, power graters or other mills to produce a uniformly sized product or granules. Some granulators may use a rotating knifes while other types may employ a crushing or shearing action against an integrated screen or grate to control product granule size.
	Disk Attrition Mill		The double disk mill, disk mill or attrition mill is a modern version of the ancient buhrstone mill where the stones are replaced with opposing disks or plates.  The disks may be grooved, serrated or spiked.
	Dispersion / Colloid / 3-Roll Mill		Colloid mills utilize discs or rotors that spin at very high speeds in a liquid media.  The shearing action from the high speeds and small gap between the rotor and stator or chamber provides emulsification or dispersion.  The rotors often have a serrated outer surface.  Some dispersion mills with larger gaps also use fine beads within the liquid to enhance dispersion. Roller mills or 3-roll mills disperse and refine a fine powder or pigment into a liquid by passing the paste between a series of rolls rotating at different speeds.  Three roll, colloid or other dispersion mills are commonly applied in paint, resin and adhesive applications.
	Jet / Fluid Energy Mill		Mills for fine grinding where a stream or jet of feed particles is impacted against another jet (opposed jet type) or a chamber wall.   Many jet mills incorporate an integral classifier.
	Hammer / Cage Mill		Impact mills that utilize fixed or swinging hardened steel hammers, chain or a cage.  Depending on the size or configuration, hammer mills are utilized for coarse crushing to fine milling.  With swinging hammer type mills, the hammers can bounce and prevent a jam when a mill is fed with too quickly or with feed that is too large.  Hammer crushers and cage mills are available in vertical and horizontal rotor configurations with one to many rows of hammers.
	Impact Mill / Crusher / Breaker		Impact where feed material is crushed or broken down by impact against a surface or a bed of feed material.  The feed material may be propelled by gravity or by a rotating impeller or rotor.  The impellers or rotors can be vertically or horizontally orientated.  Vertical impact mills, cage mills, Bradford breakers, hammer mills, granulators are usually classified as types of impact mills.
	Pin / Universal Mill		Pin mills utilize a rotor with one or more rows of rods that impact and/or propel particles into stationary pins or surfaces.   Universal mills have interchangeable rotors that allow different types of materials to be handled on the same machine.  Various rotor configuration as possible such as pin mills, wing beater, cross beaters, blast rotor or grinding disc.  Many pin mills, cross beaters and universal mills falls into the category of high speed rotor pulverizers or disintegrators.  They tend to produce a finer product compared to coarse crushers or impactors.
	Roll Crusher		Mills for intermediate grinding where feed is crushed between the nip of two rolls or between a single roll and a fixed surface.  The rolls can be serrated, toothed or smooth.  Rolls crushers tend to produce weaker shaped product particles compared to impact mills.
	Shredder / Knife / Disc Mill		Mills for shredding fibrous or tough materials such as wood products, cellulose, rubber or polymers.  Hog or knife mills are also used for shredding.
	Vertical Roller / Dry Pan		Mills that use a vertically orientated crushing wheel or muller that revolves around a solid or perforated pan, or screen.  Alternately, the pan can rotate or both the rollers and pan or grinding table can rotate.  Also known as vertical roller mills, horizontal roller mills, ball and amp; ring, ring-roller, chasers, pan crushers, bowl mills, screen mills or mullers.  These mills are often used in foundry type and mineral or ore processing applications.  Their advantage is they can reduce a relatively coarse feed to a coarse powder in one step (e.g., minus 2 inch feed to -20 mesh product).
	Other		Pulp beater mills or other mills not listed.
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