Comminution is one of the four main groups of mechanical processing and describes the movement of the particle size distribution (grains, drops, bubbles) into a range of finer particle sizes (The other groups are agglomeration, separation and mixing). The particle size distribution (PSD of a powder or granular material or particles dispersed in fluid is a list of values or a mathematical function that defines the relative amounts
Comminution can be found in daily life in activities such as cutting, crushing, grinding and rasping in the preparation of different foods.
Industrial applications are found in mineral processing (extraction of raw materials), chemical and ceramic industries, cement production, production of food and in the processing of waste.
In most of the cases the word comminution is used in referral to solids. Depending on the particle size it is distinguished between crushing (coarse feed material, bigger than appr. 50 to 100 mm) and grinding. Machines used for comminution are jaw crusher, cone and gyratory crushers, roller crusher, impact crusher, tube mills (e. A rock crusher is a machine designed to take large rocks and reduce them to smaller rocks gravel or rock dust A rock crusher is a machine designed to take large rocks and reduce them to smaller rocks gravel or rock dust g. ball mills or autogenous mills), vertical roller mills and roller presses
Mining
Comminution refers to a series of mineral processing techniques used in extractive metallurgy to reduce particle sizes of rocks and ores. A ball mill is a type of grinder used to grind materials into extremely fine powder for use in paints pyrotechnics and ceramics Mineral processing, otherwise known as mineral dressing is the practice of beneficiating valuable minerals from their Ores Industrial mineral treatment processes usually combine Extractive Metallurgy is the practice of extracting Metal from Ore, purifying it and recycling it In Geology, rock is a naturally occurring aggregate of Minerals and/or Mineraloids The Earth's outer solid layer the ‘ Lithosphere An ore is a volume of rock containing components or Minerals in a mode of occurrence that renders it valuable for mining Comminution processes are used to crush rocks into powder in preparation for subsequent processing methods which generally require finer particle sizes. A granular material is a conglomeration of discrete Solid, macroscopic particles characterized by a loss of energy whenever the particles interact (the most common example would A particle is liberated when the mineral of interest is physically free from any other minerals present (the gangue). A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Tailings (also known as slimes, gangue, tailings pile, tails, leach residue, or slickens) are the materials left over
The machinery used for comminution can be divided into classes based on the size of the fragments they produce. A machine is any device that uses Energy to perform some activity Devices that produce coarse chunks are called crushers and those that produce finer particles are called grinders. A crusher is a Machine designed to reduce large Solid Material Objects into a smaller volume or smaller pieces A grinding mill is a Unit operation designed to break a solid material into smaller pieces
Waste management
Comminution is also used in the mechanical shredding or pulverizing of waste; a process found in solid and water waste treatment.
See also
A crusher is a Machine designed to reduce large Solid Material Objects into a smaller volume or smaller pieces A rock crusher is a machine designed to take large rocks and reduce them to smaller rocks gravel or rock dust A pulverizer is a mechanical device for the grinding of many different types of materialsDapyx Software network: MP3 Explorer | Ebook Manager | Zenithic