In the concrete recycling plant, mobile concrete crusher and screening machine are used for recycling concrete waste for aggregate production.
Mobile concrete crusher
Mobile concrete crushers are carried to the site by truck and trailer and have their own onboard drive system typically track driven. These units move easily on sites where several moves are required.
Stationary crushers are just that they are permantly fixed to the ground. Typically used in a recycling yard where all material is trucked to the site.
Concrete recycling plant
Products (aside from base course) are high quality aggregate, processed in steps with time and effort involved in Concrete crushing, pre-sizing, sorting, screening and contaminant elimination. The denominator is to start with clean, quality rubble in order to meet design criteria easily and ultimately yield a quality product that will go into end use.
Concrete Crushing and screening systems start with primary jaws, cones and/or large impactors taking rubble from 30 inches to 4 feet. A secondary cone or impactor may or may not need to be run, and then primary and secondary screens may or may not be used, depending upon the project, the equipment used and the final product desired. A scalping screen will remove dirt and foreign particles. A fine harp deck screen will remove fine material from coarse aggregate.
Further cleaning is necessary to ensure the recycled concrete product is free of dirt, clay, wood, plastic and organic materials. This is done by water floatation, hand picking, air separators, and electromagnetic separators.
Occasionally asphalt overlay or patch is found. A mixture of asphalt and concrete is not recommended but small patches are not detrimental.
The more care that is put into the quality, the better product you will receive. With sound quality control and screening you can produce material without having to wash it as with virgin aggregate which may be ladened with clay and silt.
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