The flow diagram below represents the configuration and flow in a typical modern rice mill.
1 - paddy is dumped in the intake pit feeding the pre-cleaner 2 - pre-cleaned paddy moves to the rubber roll husker: 3 - mixture of brown rice and unhusked paddy moves to the separator 4 - unhusked paddy is separated and returned to the rubber roll husker 5 – brown rice moves to the destoner 6 - de-stoned, brown rice moves to the 1st stage (abrasive) whitener 7 - partially milled rice moves to the 2nd stage (friction) whitener 8 – milled rice moves to the sifter 9a - (for simple rice mill) ungraded, milled rice moves to bagging station 9b – (for more sophisticated mill) milled rice moves to the polisher 10 - Polished rice, will move to length grader 11 - Head rice moves to head rice bin 12 – Brokens moves to brokens bin 13 – Pre-selected amount of head rice and brokens move to blending station 14 – Custom-made blend of head rice and brokens moves to bagging station 15 – Bagged Rice moves to the market
A – straw, chaff and empty grains are removed B - husk removed by the aspirator C – small stones, mudd balls etc. removed by de-stoner D - Coarse (from 1st whitener) and fine (from 2nd whitener) bran removed from the rice grain during the whitening process E - Small brokens/brewer’s rice removed by the sifter