2012년 6월 7일 목요일

Mobile Crushing Plant in Indonesia


Free standing mobile crushing plants may be mounted on tracks, although this is not always the case. They tend to be no more than 20 metres in length, so can be used in confined spaces on small sites. These units are usually fed by rubber tyred loaders, back actors or dump trucks. Crushed material may be screened to separate two size ranges of particles, then is carried from the crusher by conveyor to be stockpiled close to the plant.

The material may be further screened either from the primary conveyor or from the stockpile; the larger material may be transferred to secondary or tertiary crushing units, screened again and stockpiled. The screens are large sieves made of grate bars. They vibrate which causes the particles to be moved across the screen thus sorting out the particles by size. Screens can be integrated in the mobile crushing unit or can be free-standing mobile plant. They are commonly used to sort materials before crushing as well as after crushing.

Mobile crushing plant can be used on site to process demolition waste. Where construction is to follow demolition on the site, concrete and steel can be recycled. Once material has been crushed and reduced in size, the arisings can be used on site as piling mats, backfill or for the construction of access roads. Recycling of onsite materials reduces the need to bring in primary aggregate for such applications and reduces the volume of waste material taken away to landfill.

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