Process of Rice machining

                                      Rice

Rice is the seed of the monocot plant. It is the most important staple food for a large part of the world's human population, especially in East and South Asia, the Middle East, Latin America, and the West Indies. It is the grain with the second-highest worldwide production, after corn 

 Pakistan is vastly known around the world for the rice it produces, Being one of the largest rice producing countries, Pakistan has an annual production of more than 5 million tons of rice

Process of rice milling

Ø  Pre cleaner

Although harvested paddy grain may have gone through a cleaner before drying, wet paddy is difficult to clean thoroughly. A simple pre-cleaner used in rice mills usually contain an oscillating double screen bed with an aspirator. The first screen is a scalper that lets through the grain but retains straw. The second screen retains the grains but lets through broken grains and small stones or weed seeds.

The capacity of the paddy pre cleaner is usually based on the capacity of the rice mill. A typical pre-cleaner  for a 3 ton/hr rice mill will have a 5 ton/hr cleaning capacity.

Ø  Dryer

The dryer heat the paddy at suitable temperature and reduce the moisture content to expected percentage. The burner uses paddy husk or wood, saw dust etc as fuel which saves much cost for the users and is environmental friendly and energy saving.

Ø  Storage

The paddy is stored for a minimum of 8 months before milling. During this time, it should be carefully preserved to retain its unique physiochemical characteristics. Paddy stored for long term is invariably exposed to climatic adversities e.g. extreme summer and winter and monsoons. It requires a great deal of effort to safeguard the paddy. 

Ø  De husking

It is a process to remove the non edible husk of the paddy to get brown rice. Husk is removed by shearing force which is created by the relative speed of two rubber rolls revolving in opposite direction.. This process leaves behind some paddy in the output of this machine, which is removed in the paddy separation process. 

To husk the paddy delicately, very soft rubber rolls create a shearing force that is just sufficient for the process.

Ø  GRADING

During de - husking and polishing, rice breakage takes place which is inevitable. The broken rice can be separated through sieves and length graders. 

Ø  Polishing

Polishing process is designed in such a way that rice kernel's delicate tip ( nakka ) remains intact even if rice passes through abrasion or friction. Maximum amount of care and effort goes in to this process as it is the stage in which the rice quality is defined. 

Ø  COLOR SORTING

Highly sophisticated Color Sorting machines view each and every grain on an individual basis for any color deformation in the rice, colored stones or glass, white stones, transparent glass, ferrous, nonferrous material. 

Ø  AUTO SCALE

After all the processes have done. Bags of rice are weighted in a machine. This is known as auto scale. It fills The bag as the quantity /kg is fixed in machine

Ø  HEAD RICE PACKED

And then the packing of a certain weight having bag is being packed to come in market