Sandvik have released the new QJ341+ jaw crusher with a double deck pre-screen that provides high amplitude for separation.
It is suitable for quarrying applications as the pre-screen ‘screens out’ the fines in feed material prior to entering the crushing chamber. The removal of large amounts of fines creates greater efficiency and productivity, as well as less wear on the crusher.
The crusher also features a new telescopic natural fines conveyor to complement the pre-screen. The conveyor has a discharge height of 3.1m to tackle the increased flow of pre-screened material.
The dirt chute has been designed with a steeper angle for faster transfer of material while also increasing the ability to deal with sticky material. The three position dirt chute enables material passing the pre-screen grizzly to be diverted either to the main conveyor or the natural fines conveyor, in the middle position, it allows a screened product to be produced out from the fines conveyor. All of this is done by positioning the three way chute without removing any media from the pre-screen.
The crusher features an improved self locking hopper for quick set up from ground level, with added improvements to the main conveyor to reduce drag. It is fitted with bent axis and radial piston motors throughout, reducing hydraulic flow rates and increasing durability and fuel economy.
It also features other characteristics of the standard model including reversible jaw and hydraulic drive which allow the crusher to start under load and hydraulically adjustable CSS setting.