Rice Mill Industry

Rice is the staple food for almost 65% of the population in India. Paddy in its raw form cannot be consumed by human beings. It needs to be suitably processed for obtaining rice. Rice milling is the process which helps in removal of hulls and barns from paddy grains to produce polished rice. Rice forms the basic primary processed product obtained from paddy and this is further processed for obtaining various secondary and tertiary products. The basic rice milling processes consist of the following process.


  • Pre Cleaning: Removing all impurities and unfilled grains from paddy
  • De-stoning: Separating small stones from paddy
  • Parboiling (Optional): Helps in improving the nutritional quality by gelatinization of starch inside the rice grain. It improves the milling recovery percent during deshelling and polishing / whitening operation
  • Husking: Removing husk from paddy
  • Husk Aspiration: Separating the husk from brown rice/ unhusked paddy
  • Paddy Separation: Separating the unhusked paddy from brown rice
  • Whitening: Removing all or part of the bran layer and germ from brown rice
  • Polishing: Improving the appearance of milled rice by removing the remaining bran particles and by polishing the exterior of the milled kernel
  • Length Grading: Separating small and large brokens from head rice
  • Blending: Mixing head rice with predetermined amount of brokens, as required by the customer
  • Weighing and bagging: Preparing the milled rice for transport to the customer

Status of Rice Milling Units in India
Rice milling is the oldest and the largest agro processing industry of the country. It has a turn over of more than Rs.25,500 crore per annum. It processes about 85 million tonnes of paddy per year and provides staple food grain and other valuable products required by over 60% of the population. Paddy grain is milled either in raw condition or after par-boiling, mostly by single hullers of which over 82,000 are registered in the country. Apart from it there are also a large number of unregistered single hulling units in the country. A good number (60%) of these are also linked with par-boiling units and sun -drying yards. Most of the tiny hullers of about 250-300 kg/hr capacities are employed for custom milling of paddy. Apart from it double hulling units number over 2,600 units, underrun disc shellers cum cone polishers numbering 5,000 units and rubber roll shellers cum friction polishers numbering over 10,000 units are also present in the country. Further over the years there has been a steady growth of improved rice mills in the country. Most of these have capacities ranging from 2 tonnes /hr to 10 tonnes/ hr.

Source: http://planning.up.nic.in/innovations/inno3/ae/rice.htm