Double Drive Pulverizers Grinding upto 30 Microns

SINGHASINI Double Drive Pulverisers are impact type, high speed, air swept, swing hammer type, multipurpose grinding mills having separate drive for the centrifugal blower of the pulveriser, capable of grinding soft to medium hard minerals & chemicals up to the hardness of 5.0 Moh’s to achieve particle size up to 700/800 Mesh or 18/20 Microns. The Main Mill of the Pulveriser is driven by a separate motor and the Centrifugal Blower with a separate motor in order to have better control over the particle size of the end product. The pulveriser main mill is supplied with Automatic Feeder, Static Classifier along with an Air Lock Valve, High Efficiency Cyclone Air Separator along with Surge Drum & Air Lock Valve for better collection efficiency, Open Type Tubular Dust Collector / bag filter for manual cleaning of bags. The material of construction of internal parts of Pulveriser main mill, cyclone air separator, bag filter / dust collector & exhaust air blower varies as per individual requirement. The Double Drive Pulveriser is supplied with a Static Classifier & Digital (Automatic) Feed Controller for maximum / optimum feeding.

Super fine grinding is achieved by compression, shear, abrasion, attrition and impact of hammers / beaters on the materials against the replaceable serrated striking plates. The separately driven strong suction blower sucks the pulverized product and the air stream inside the mill carries the result product. In between the fan and the grinding chamber (having beaters / hammers) is the Whizzer Classifier consisting of blades with tips tapered to conform the contour of whizzer classifier cone. Counter current is set up at the periphery indicated by arrows; it rejec

ts the coarse material back to the grinding chamber for re-grinding. Clamping the whizzer clamp at a suitable position can control fineness. The entire wearing parts consisting of grinding chamber, whizzer classifier and blower are lined with replaceable lining plates.

The function of Static Classifier is to separate the grits / coarser particles which escape from the whizzer classifier because of splintering effect (In case of Medium Hard Minerals Grinding Operation) from the super fine pulverised materials which is sucked by the centrifugal blower to Cyclone Separator in order to complete the grinding circuit.

The function of High Efficiency Cyclone Separator is to separate the super fine pulverised materials from air which is sucked by the centrifugal blower to open type tubular bag filter / dust collector to complete the closed circuit grinding system. Inside the cyclone the dust laden gas enters a cylindrical chamber tangentially and leaves through a central opening. The air path forms a double vortex with the air spiraling downward at the outside and upward at the inside. The excess air coming in the system with feed material, etc. is bled off through air bag filter / dust collector and thus making the entire grinding operation dust less.

The entire system works under suction except blower to cyclone pipe, which is under pressure. The grinding chamber is provided with a special type of Trap Iron Pocket Where small pieces of iron, nuts & bolts etc. are trapped. There is a special type of Silica Separator attached inside the grinding chamber to remove free silica and other heavier impurities present in the raw material continuously from the grinding chamber. The main advantage of silica separator is, that it reduces the wear & tear inside the machine and also improves the quality of the product being grinded.

Few Applications of SINGHASINI Superfine Pulveriser