The mill is the point where cereals are transformed from agricultural commodities to foods or food ingredients.
Wheat cleaning is related to the flour yield and ash content. A great deal of physical cleaning takes place in the mill.
It must be clean of all impurities because impurities increase the ash content of the flour, adversely affect four color, and reduce the flour yield.
The grain must be carefully cleaned and all foreign grains (cereals other than wheat and fodder plants), stones and metallic particles are removed. The cleaning operations separate the impurities and foreign sees by dimension, weight and form.
Wheat cleaning operation consists of cleaning operation in the first stage, involving the use of:
*rubble separator to remove gross contaminants
*disc separator to remove weed seeds and broken grains
*magnetic separator to remove pieces of metal and
*wash and whizzer device where wheat is rapidly sluiced round at high speed in a stream of water to remove dirt.
Milling and mixing of the cleaned wheat are carried out in the production section.
Process of wheat cleaning
