The invention belongs to the technical field of
food processing and particularly relates to coarse cereal flour and a preparation method thereof. The preparation method includes: (1) removing impurities; (2) weighing materials, adding into a mixer, spraying
wetting liquid, stirring, mixing, discharging a mixture, spreading, centrifugally dripping, spraying
salt water, and spreading to complete
wetting; (3) milling the mixture, and separating out cortex, residues, cores and
powder to obtain the coarse cereal flour. By mixing of coarse cereals before milling, problems of
high energy consumption,low mixing efficiency and incompleteness in mixing after traditional coarse cereal milling are avoided. By adoption of the
wetting liquid for wetting, bonding force of a cortex layer, an
aleurone layer and
endosperm is reduced through water adsorption of
endosperm and the cortex layer before milling, and milling
energy consumption differences of different materials are reduced; by mixing and mutual
extrusion and friction of the different materials, milling efficiency is improved.