SCL series sand-stone granulating machine is developed and manufactured on the basis of SX sand making machine, choosing various ore and rock of which compression strength is not more than 300MPa to granulate. Different units of rotary speed and motor power are available according to customers'requirements. Under the condition of increasing rotary speed, sand stone granulating machine can be changed easily to sand making machine according to users' demands. And its most spare parts can be exchanged with SX series sand making machine. The Calculation of Sand-stone Granulator 1. The determination of treating capacity Calculate as following formulas: Q=3600Aª-Vª+2R t/h Aí¬í¬Compensating coefficient 0.7í½1.2t/m*h Take small valve when high rotation speed and take large valve when low rotation speed. ª-í¬í¬Material density t/m3 Ví¬í¬Total volume of rotor exit m3 V=mV1 mí¬í¬Rotor exit number V1í¬í¬Volume of unit exit m3 ª+í¬í¬Circle frequency of rotor rotation ú¿radianú¬ ª+=2ª-n/60 ní¬í¬Rotor rotation speed r/min Rí¬í¬Rotor semidiameter m 2. The determination of motor power The machines of same spec can choose different motor power to meet different demands. Therefore, the determination of motor power is just a range. Generally speaking, express as following formulas: N=ª¦ú¿0.03í½0.15ú¬D2n kW Ní¬í¬Motor power kW ª¦í¬í¬Compensating coefficient 0.8í½1.8m2r*kW/min It is depended on the diameter, the larger diameter, the higher ª¦ value. Dí¬í¬Rotor diameter m ní¬í¬Rotor rotation speed r/min