Process

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Basic Rice Milling Processes

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 rice milling process begins with the incoming inspection of raw paddy, ensuring only high-quality grain enters the system. This is followed by pre-cleaning, which removes visible impurities and debris. The cleaned paddy is then transferred to a storage silo for holding before further processing.

The paddy undergoes primary steaming, then moves to soaking in hot water, followed by secondary steaming. These thermal treatments help gelatinize starch and improve the nutritional profile of the grain. After steaming, the paddy is dried at a regulated temperature, then stored in silos to stabilize moisture content.

The dried paddy then goes through cleaning and de-stoning, which remove residual foreign particles and heavier contaminants like stones. The cleaned grain enters the de-husking phase, where the outer husk is mechanically removed. This is followed by husk separation, and the husk is sent to a designated husk yard.

The product then passes through a paddy separator, which separates de-husked rice from any remaining paddy. The separated rice is allowed to rest, helping stabilize the grains. It then proceeds to a width grader, ensuring size uniformity.

The rice enters the polishing stage, starting with abrasive polishing, followed by storage in tempering bins, and then friction polishing, where bran is removed to achieve a smooth finish. Further steps include sizer grain removal, eliminating undersized or broken grains, and colour sorting, which detects and removes discoloured grains. Length grading ensures uniform grain length, and any rejected grains are separated at this point.

The final product is stored in a silo, then packed and sent for transportation and shipment. Throughout the process, emphasis is placed on cleanliness, uniformity, and bran removal to meet high-quality standards.