تصميم الكرة مطحنة صيغة السرعة الحرجة
الكرة مطحنة صيغة السرعة الحرجة The "Critical Speed" for a grinding mill is defined as the rotational speed where centrifugal forces equal gravitational forces . This is the rotational speed where balls will not fall away from the mill's shell. . the formula used for Critical Speed is:.