[Httpd Wiki] Update of "xiaoyinggu" by xiaoyinggu

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== guxiaoying ==
Email: <<MailTo( bailingcrusher@yahoo.com )>>

The ball mill is a key equipment to grind the crushed materials, and the ball mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. And the ball mill can grind various ores and other materials with dry type and wet type. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. Our ball mills can satisfy different requirement, and have good features such as low consumption, high capacity per hour, no pollution to the enviroment around, easy to be repaired.

Working Principle:

The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.

Ball mill is characterized by their smaller (comparatively) diameter and longer length. The feed is at one end of the cylinder and the discharge is at the other. Ball mill is commonly used in the manufacture of. This industrial ball mill is mainly big machines. Small versions of ball mill can be found in laboratories where they are used for grinding sample material for quality assurance. The power predictions for ball mill typically use the following form of the bond equation:Ball mill is normally operated at around 75% of critical speed, so a mill with diameter 5 meters will turn at around 14 rpm. The mill is usually divided into at least two chambers, allowing the use of different sizes of grinding media. Large balls are used at the inlet, to crush clinker nodules (which can be over 25 mm in diameter). Ball diameter here is in the range 60-80 mm. In a two-chamber mill, the media in the second chamber is typically in the range 15-40 mm, although media down to 5 mm is sometimes encountered. As a general rule, the size of media has to match the size of material being ground: large media can't produce the ultra-fine particles required in the finished cement, but small media can't break large clinker particles. Mills with as many as four chambers, allowing a tight segregation of media sizes, were once used, but this is now becoming rips. Alternatives to multi-chamber mills are: Pairs of mills, run in tandem, charged with different-sized media. Use of alternative technology (see roll-presses below) to crush the clinker prior to fine-grinding in a ball mill.
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sourece:

[[http://www.cheapballmills.com/|http://www.cheapballmills.com]]

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