The maize mill is a processing machine used to grind dried maize kernels into flour or meal of varying fineness depending on the required grade. It is commonly composed of a feeding hopper, milling chamber with hammers or grinding plates, sieve system, electric motor or diesel engine, and flour discharge outlets. The machine is built with a robust metal frame to withstand continuous impact during milling and is widely used in small-scale and industrial grain processing facilities to produce maize flour for human consumption and animal feed.

In operation, cleaned and dried maize is fed into the hopper where it enters the milling chamber. Inside, rapidly rotating hammers or grinding plates crush and grind the grains into smaller particles. The ground material passes through a sieve that determines the fineness of the flour, allowing only properly sized particles to exit through the discharge outlet while coarser particles are returned for further grinding. The operator controls the feed rate to ensure smooth milling, and regular cleaning of the sieve and chamber maintains efficiency and product quality.