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Cross Beater Mills |
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For crushing soil, bricks, concrete, rock, cement clinker, coal, glass, ores, minerals, rare earth products, chemicals, spices, grain and hundred of other materials up to medium-hard range.
200g to 50kg/hr
Feed size up to 30 mm
Reduces material down to 50 microns (depending on material)
Coarse, medium or fine grinding
Grooved or smooth linings available in cast iron, chrome steel and stainless steel
The popular Cross Beater Mill is used for crushing and grinding a wide assortment of materials up to the medium-hard range, within a
variety of industries, including construction, environmental, mineral, chemical, agricultural and ceramic. The mill is remarkable for combining
small size with strength and power for heavy duty application and continuous operation.
Material passes from the hopper into the grinding chamber, where it is pulverised between the hard grooved door and chamber linings, as well as by the impact of the three rotating beater tips on the beater arm.
Smooth door and chamber linings are also available; these are interchangeable with the standard grooved linings and are especially suited for use with most friable materials, such as soil, where grinding efficiency is unaffected by the absence of grooves but with the advantage of easy cleaning.
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The mill processes samples from 200 grams up to a maximum of about 50kg/hr, with an initial lump size of up to 30mm down to a finest end particle size of approximately 50 microns. For continuous throughput, material can be fed into the mill by means of a vibratory feeder fitted above the hopper. Output varies according to the nature of the product and the screen mesh size
FEATURES
Beater tips can be re-adjusted to maintain performance
The mill can be stand-mounted or bolted to a bench
A 5-litre receptacle with filter tube and clamps is included
A 30-litre receptacle is available as an optional accessory
(customers’ own containers or sacks can be attached, if required)
Dust-free and easy to clean
Interchangeable screens, with different hole diameters, determine the fine particle size. The bulk of the ground product is reduced to a size much finer than the screen hole. For example, when grinding friable, medium-hard substances using a 0.5mm screen, the approximate percentages which pass through the following BS mesh sieves are:
100% through BS mesh 72 (0.212mm)
98% through BS mesh 85 (0.18mm)
95% through BS mesh 100 (0.15mm)
70% through BS mesh 150 (0.106mm)
40% through BS mesh 200 (0.075mm)
Screens are changed quickly and simply by sliding them in and out of the recess provided. They are available in stainless steel with the following hole sizes (see table below):
CONSTRUCTION
The housing is of heavy duty cast iron. The grinding chamber lining and door lining are available in cast iron, chrome steel and stainless steel. Beater arms come in cast iron and stainless steel, and beater tips in chrome, steel, and stainless steel and chrome free. There is also a special unit with smooth liners for soil grinding that offers fast cleaning and minimizes cross contamination. Cast iron is the hardest of the three, the least expensive and most frequently used. Chrome steel is usually selected for grinding abrasive materials. Stainless steel is used for applications demanding improved chemical resistance, as well as for food and pharmaceutical applications.
Options include all-stainless steel contact parts, flameproof electrics as well as special hoppers and stands.
SAFETY FEATURES
The design of the feed hopper restricts hand access whilst allowing unobstructed passage for the product.
The mill cannot be switched on until the door is fully closed.
A brake motor, operated by a fail-safe microswitch, brings the beater arm to an instant stop if the door is opened during operation.
A specially designed outlet chute prevents access to moving parts from underneath, even with the screen removed.
MOTOR
The mill is powered by a 1.1kW 3000 rpm motor, supplied for use on single-phase or three-phase power supplies. Other voltages can be supplied on request. An integral mill-mounted push button starter and motor protection device are fitted as standard.
Dimensions & weight of mill, stand mounted (approximately):
113cm H x 56cm W x 70cm D
52kg nett, 62kg gross
Screen sizes available:
Stainless steel Conidur & Trapezoidal
0.12 mm / 0.20 mm / 0.25 mm / 0.50 mm / 0.75 mm / 1.0 mm /1.50 mm
Heavy duty stainless steel round hole
2.00 mm / 3.0 mm / 4.00 mm / 5.00 mm / 6.00 mm / 8.00 mm / 10.00 mm
Stainless steel round hole
3.00 mm / 4.00 mm / 5.00 mm / 6.00 mm / 8.00 mm / 10.00 mm
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