EXP 3 Size Reduction Using Ball Mill and Screen Analysis Using Sieve Shaker PDF

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Summary

i ) To demonstrate a batch cylindrical ball mill operation. Students shall carry out simple screen analysis for each experiment at different speed.ii)To demonstrate a sieve shaker operation and to get familiarized with screen analysisSize reduction is an action that uses external force to reduce the...

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EXP 3 : SIZE REDUCTIONUSING BALL MILL AN

Mimi Athirah bt AS OB i)To demonstrate a batch cylindrical ball mill operation. Students shall carry ii)To demonstrate a sieve shaker operation and to get familiarized with scre

INTRODUCTION Size reduction is an action that uses external force to reduce the size of a larger particle to a smaller one of the desired sizes and shape. Impact, compression, shear, and attrition are the most common mechanisms associated with size reduction. One method of size reduction is the ball mill. The ball mill is a type of grinder that grinds materials into fine powder. When heavy balls of material fall on and crush the material being milled, grinding occurs. The raw material's particle size decreases as a result of continuous collision. The size and weight of the ball, as well as the movement of the mill, determine the size of the finished product. Sieve analysis is a method for determining a powder's particle size distribution. This process involves splitting a powder sample into discrete size ranges by sifting it through a stack of wire mesh sieves. The sieve stack is vibrated for a set amount of time using a sieve shaker. When they fall through the sieves, vibration causes irregularly formed particles to reorient themselves.

DISCUSSION In this experiment, the total mass of samples is being measured and compared. Based on the results obtained from both experiments, the experiment with higher rotational speed, 100 rpm produces more powder as compared to 45 rpm rotational speed. At the 45rpm motor speed, the efficiency sample obtained...