Key words: rice milling, low cost, rice, blow out, machine, brown rice, paddy
Rice is generally considered as a semiaquatic annual plant, although it could survive as a perennial in the tropics or subtropics. It grows widely in the tropics where rainfall is abundant because it is a cereal that requires plenty of sunshine and water. It remains article of food for many countries and it is a basic food for world population. Rice is the seed of the monocot plants oryza (Asian rice) sativa ororyza glaberrima (African rice However, rice can be grown practically anywhere, even on a steep hill or mountain area with the use of water controlling terrace systems. Although its parent species are native to Asia and certain parts of Africa, centuries of trade and exportation have made it common place in many cultures worldwide (Koy and Adekoya, 1994). The traditional method for cultivating rice is flooding the fields while, or after, setting the young seedlings (Popoola, 2007). Rice processing involves harvesting, drying, threshing and milling. Each grain of rice is encased, in an easily removed protective hull. Rice is milled to remove the hull, bran and other unwanted materials (Matz, 1970). In the rice industry, milling is referred to as overall, Operations in rice mill-cleaning, shelling, bran removal and size separation.