Sorghum Energy (Milling)

Milling the sorghum grain
	The sorghum grain is milled in a specialised mill provided by Skyway Technology. This advanced turbo separation mill produces three fractions from the grain - called G (Gross), M (Medium) and F (Fine), along with a very fine particle dust. Each of these fractions has different uses.

The cleaned grain from the sorghum is first passed into an homogeniser, essentially an ultra high speed vacuum disintegration system. The first turbo separation operation then takes place, which removes the heavy bran. The remaining product is then subjected to a second turbo separation to gain the medium and fine flours.
The Skyway Turbo Separation Mill Type M2

Using the fractions
	G (Gross)
	The gross fraction (mainly bran) can be used as it is for high-protein animal feed. Further milling can extract the tannin from the bran, leaving tannin-free bran and a quantity of tannin which can be used for dyes, creams and cosmetics.
	M (Medium)
	The medium fraction is rougher flour, and would be typically returned to the mill for further processing, although it can be used for bran-based cereals.
	F (Fine)
	The fine fraction produced by the mill can be sold as gluten-free flour, and turned into special bread, biscuits and cakes for people who suffer from Celiac disease. The flour itself is very high in protein and typically constitutes 18-22% of the output.