Pit & Quarry, January 2013

CRUSHING screens available in a setup will dictate the number of different sized products a machine can produce in one pass Closed circuit machines equipped with a two deck screen offer the ability to produce up to three different sizes of product The top deck might be screening materials 2 in minus the bottom 1 in minus and the oversized material can either be fed back to the hopper for additional crushing or with the installation of flop gates can be kept for a third product to sell Similarly three deck plants are needed when production specs require four size classifications To move or not to move Some operations do not require mobility Because the projected life of the quarry will be decades stationary crushers are put in place offering a custom heavy duty design However some quarries and most contractors require highly mobile machines which can be easily dismantled and moved from one site or job to another Mobile crushers allow operators to move the crusher unit closer to the face of the crushing activity effectively reducing unnecessary expense and hassle associated with loading and hauling large materials across a site Wheeled mobile crushers offer maximum convenience for transport These units can be hooked up to a truck and hauled to different locations meeting all DOT requirements They can also be relocated on site with the help of a truck These units are commonly self contained eliminating the need for additional diesel engines While these units are compact and made to meet DOT regulations they were also designed with maintenance in mind This primary horizontal shaft impact crusher is made for stationary applications Tracked mobile crushers are ideally suited for applications that require movement within a jobsite as they can move under their own power They are easily transported from one site to another by simply loading them on a trailer However the convenience of these machines comes with a cost If an operation wishes to run multiple pieces such as a screening plant and conveyors it would need to also run three to five diesel engines depending on the additional pieces Further because theyre built for constant relocation on a trailer theyre more compact and lightweight than wheeled crushers making A crusher that is too small fails to produce the desired tonnages limiting yields and profits and capping the growth potential of the organization TENSIONED AND MODULAR www flexmat com Booth 1935 March 19 21 2013 18 PIT QUARRY January 2013 www pitandquarry com