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B

Bond's Third Theory

A comminution theory concerned with the energy required to reduce a given size of feed to a required size of product. On his theory F.C. Bond based an empirical formula which may be used to compare the efficiencies of crushing plants etc.

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Bucket Elevator

A continuous line of buckets attached by pins to two endless chains running over tracks and driven by sprockets; alternatively, the buckets are attached to a rubber belt. Used for raising loose materials or slurries at high angles or vertically.

Also: elevator

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BM

abbr. bench march

A point of known elevation above Ordnance datum which has been established by the Ordnance Survey. 

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BSI

abbr. British Standards Institution

National Standards body of the UK that facilitates the production of British, European and International standards.

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Bucket Wheel Excavator

A continuous excavator of large capacity suitable for relatively weak materials or recovery of materials from stockpiles. Comprising of a large diameter, rotating wheel fitted with buckets which discharge’s material through the hub onto a conveyor belt.

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Bucket Crusher

A bucket containing an hydraulically powered crushing device that can be attached to an hydraulic excavator.  The base of the bucket is a grid which allows the crushed material to be discharged.  Can be useful in construction and demolition activities.

Also: crusher bucket

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Bucket crusher

Bitumen Tank

A tank or vessel for storing bitumen which must be heated to prevent the bitumen solidifying and provided with a number of safety devices.

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Bitumen tanks

Belt Scraper

A belt cleaning device, usually a blade or brush of some kind, which is actually in contact with or positioned very closely to a moving conveyor belt, to remove adhering material.

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Belt scrapers

Belt Press

A type of dewatering device for finely sized material such as silt and clays.  The device employs vacuum filtration to form a filter cake on one belt which is then compressed by rollers between two filtration belts to express more water, hence the name.

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Belt press

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