Design of Cryogenic Grinding Mill

The term "Cryogenics" originates from Greek word which means creation or production by means of cold. As prices for energy and raw materials rise and concern for the environment makes safe waste disposal difficult and costly, resource recovery becomes a vital matter for today's business. Polymers cannot be easily grinded using conventional method. Due to this temperature rise, increases wear on grinding equipment are common phenomena and finely ground material is not achieved. Therefore cryogenic grinding system was design and developed to cool the polymers before feeding it to grinder and also maintain the cryogenic temperature in the grinding zone. The cryogenic grinding system consist of three separate units (i) Pre cooling unit and (ii) Grinding unit (iii) storing and compressing unit. Our work is totally to based on design and manufacturing. Paper covers design, development and manufacturing of pre cooling unit, grinding unit which involves screw conveyor with enclosed insulated barrel and grinding mill. So, In this paper we are presenting details regarding cryogenic grinding process. Anticipating that this will replace conventional grinding process in coming days.