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Mechanical Operations

Mechanical Operations
The reduction ratio for fine grinders is

20-40
43961
As high as 100
44124

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Mechanical Operations
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

Limestone
Non-metallic ores
Asbestos
Rubber

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Mechanical Operations
Colloidal mills are used for __________ grinding.

Coarse
Intermediate
Fine
Ultrafine

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Mechanical Operations
__________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products.

Pebble
Attrition
Buhrstone
Roller

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Mechanical Operations
In case of a hammer crusher, the

Maximum feed size may be 50 mm
Rotor shaft carrying hammers can be vertical or horizontal
Minimum product size is 3 mm
Feed may be highly abrasive (Moh's scale >5)

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Mechanical Operations
Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about

10 to 15°
1 to 2°
5 to 10°
2 to 5°

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