The process starts with submerged, heat able sulphur pumps placed in the sulphur storage pit or tank . The flow of the liquid product into the tank is controlled by a valve, which guaranties a constant level of product. Steam heating facilities eliminate the possibility of sulphur freezing in the tank and all pipes. The Pastillator consists of a heated cylindrical stator which is supplied with liquid sulphur and a perforated rotating shell that turns around the stator, depositing sulphur drops across the whole operating width of the steel belt. The circumferential speed of the perforated rotating shell is synchronized with the speed of the stainless steel belt. Drops are therefore deposited without deformation. Heat released during solidification and cooling is transferred by the stainless steel belt to the cooling water. This is sprayed against the belt underside, collected in tanks and returned to the re-cooling plant. At no stage does the cooling water come into contact with the sulphur.

At the cooler end, pastilles are taken off with a discharge knife and pass via a chute to a collecting belt for further processing. To eliminate the possibility of damage to the pastilles when being discharged, a release agent is applied to the steel belt as a thin film by means of a roller system. An automatic filling system ensures that sufficient quantity of the release agent is always held in the tank. The Pastillator is equipped with an effective exhaust system, with a tight exhaust hood, an air exhaust and throttle flap is positioned above each Pastillator. A radial fan ventilates each plant. The pastilles are transferred to the storage silos via a bucket elevator. A simultaneous possibility of producing agricultural fertilizer and sulphur pastillation is the most important capability of this system.