Corn deep processing is a big trend for grain oil development. Many investors are interested in corn processing industry, thus, it is necessary to have a good knowledge of its processing methods. It can be divided into dry and wet milling.
The Corn wet milling process is designed to extract the highest use and value from each component of the corn kernel. The process begins with the corn kernels being soaked in large tanks called steep tanks in a dilute aqueous sulfur dioxide solution. The softened kernel is then processed to remove the germ which is further processed to remove the high-value corn oil. The Germ Meal remaining after the oil is extracted and marketed for animal feed use.
The corn dry milling process is a less versatile, less capital intensive process that focuses primarily on the production of grain ethanol. In this process the corn kernels are hammer milled into a medium-to-fine grind meal for introduction to the ethanol production process. The products of a traditional dry grind ethanol facility are fuel ethanol and Dried Distillers Grains (DDG), a low-value animal feed product.
Above are some simple introductions of the wet and dry milling. You can have a deeper understanding of the deep corn processing industry.