Grinding Mills and Their Types...

Grinding Mills and Their Types  In various fields of the process industry, reduction of size of different materials is a basic unit operation. The basic idea is to reduce particle sizes of material under handling by cutting or breaking those to smaller pieces. The usual reason for size reduction is normally the need for smaller size, but it can also be desired shape, size or number of particles. The functions of mechanics in machines made for size reduction are usually based on the principles namely (i) compression, (ii) impact, (iii) attrition, and (iv) shear. (Refer article under link  http://ispatguru.com/crushers-and-their-types/ ) Grinding mills are size reductions machines that often follow crushers in the processes where finer products are desired after crushing. Different grinding machines are usually named as mills, for example rod mills, ball mills, and attrition mills. Because of the name, verb milling is also been used as a synonym for grinding. Milling, sometimes also known as fine grinding, pulverizing or comminution, is the process of reducing materials to a powder of fine or very fine size. It is distinct from crushing or granulation, which involves size reduction of a material to a smaller size. Milling is used to produce a variety of materials which either have end uses themselves or are raw materials or additives used in the manufacture of other products. A wide range of mills has been developed each for particular applications. Some types of mills can be used to grind a large variety of materials whereas others are used for certain specific grinding requirements. Material grinding is quite often an integral part of an industrial process, whether carried out on a large or small scale and in some cases the grinding mill may be the single most costly item for...