Alkali and magnetic elements free
It is an aluminum silicate, obtained from a synthetic minerals deriving from vitri ed slag.
It is crushed, then washed and sieved using pressurized water in order to remove all the impurities.
1) The operators inside have an equipped chair to sit
2) Full soundproofing
3) The sand recovery is automatic, an Archimedean screw conveys the sand out from the machine where a second Archimedean screw conveys the sand which can be still used in the tank of the sanding machine.