Ball mill

Ball mill

A ball mill is a type of grinder used to grind materials into extremely fine powder for use in paints, pyrotechnics, and ceramics.

Description

because of their sensitivity to impact. High-quality ball mills are potentially expensive and can grind mixture particles to as small as 0.0001 mm, enormously increasing surface area and reaction rates. The grinding works on principle of critical speed. The critical speed can be understood as that speed after which the steel balls which are responsible for the grinding of particles starts rotating along the direction of the cylindrical device;thus cause no grinding further.

Grinding media

balls. While usually very effective due to their high density and low contamination of the material being processed, stainless steel balls are unsuitable for some applications, including:
*Black powder and other flammable materials require non-sparking lead, antimony, brass, or bronze grinding media
*Contamination by iron of sensitive substances such as ceramic raw materials. In this application ceramic or flint grinding media is used. Ceramic media are also very resistant to corrosive materials.

High density alumina media (90 - 95% alumina ) is widely used in the ceramic industry to grind clay bodies, frits, glazes and other ingredients. It is more expensive than silica / silex media but is more efficient

ee also

*Cement mill
*Ball-nosed milling cutters, sometimes informally called "ball mills"

External Links

* [http://www.retsch.com/products/milling/ball-mills more Information on Laboratory Ball Mills]
* [http://www.crusher-mill.com/Ball-Mill.html Feature Of Ball Mill]
* [http://www.ballmill.com.cn/ Maintenance of ball mill]


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Look at other dictionaries:

  • Ball mill — Ball mill. См. Шаровая мельница. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • ball mill — noun : a pulverizing machine consisting of a hollow drum that contains material to be pulverized along with pebbles or heavy steel balls and sometimes also water or some other liquid and that is revolved or agitated so that the pebbles or balls… …   Useful english dictionary

  • ball-mill — transitive verb : to pulverize in a ball mill …   Useful english dictionary

  • ball mill — a grinding mill in which the material to be ground is tumbled in a drum with heavy balls of iron, steel, or stone. [1900 05] * * * …   Universalium

  • ball mill — noun Date: 1903 a pulverizing machine consisting of a rotating drum which contains pebbles or metal balls as the grinding implements …   New Collegiate Dictionary

  • Ball mill — Шаровая мельница; Шаровая краскотёрка …   Краткий толковый словарь по полиграфии

  • ball mill — Смотри шаровая мельница …   Энциклопедический словарь по металлургии

  • ball mill — /ˈbɔl mɪl/ (say bawl mil) noun a machine used for crushing rocks by the agitation of large steel balls …  

  • Mill (grinding) — Mill A tabletop hammer mill Other names Grinding mill Uses Grinding Related items Mortar and pestle Expeller Extruder A grinding mill is …   Wikipedia

  • mill — Synonyms and related words: C, C note, G, G note, Vandyke, abrade, amble, armory, arrastra, arsenal, assemble, assembly line, assembly plant, atomic energy plant, atomize, average, ball mill, basic, be turbulent, beat, bindery, blaze, blooming… …   Moby Thesaurus

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