type of ball mill: • there is no fundamental restriction to the type of ball mill used for organic synthesis (planetary ball mill, mixer ball mill, vibration ball mill, …). • the scale of reaction determines the size and the type of ball mill. • vessels for laboratory vibration ball mills are normally restricted to a volume of 50 cm3.
the total feed to the ball-mill was therefore 11.54 t. per hr. or 179 per cent, of the original feed. it was evident that the ball-mill was greatly underloaded in this test, but so much trouble developed in the classifier, due to the tendency of the sands to slip down the slopes, that a more rapid feed was not attempted at this time.
ball milling induces self-sustaining reactions in many sufficiently exothermic powder mixtures. the process begins with an activation period, during which size reduction, mixing, and defect formation take place. the msr (mechanically induced self-propagating reaction) is ignited when the powder reaches a well defined critical state.
the ball mill is a hollow drum closed with loading and unloading end caps, filled with grinding media and rotated around its axis.the drum of the ball mill (pic. 1) is a hollow cylinder of steel, lined inside with armor lining plates which protect it from impact and friction effects of the balls and the grinding material.