Dry method processing process and device for corn

Abstract

The invention relates to a dry method processing process for corn, which is mainly composed of processes of clearing, hardening and tempering, peeling, degerming, hominy chop breaking, embryo choosing and hominy chop extraction. The peeling process is sequentially composed of primary stirring peeling, water addition and secondary stirring peeling. The water addition process comprises adding water with the weight to be 0.5-5% of the weight of the corn to the corn by utilizing a water addition machine and enabling the water temperature to be 10-60 DEG C. After water addition, the corn is sent to the stirring peeling process within 10min to be processed, the height of the corn is controlled within 0.5-3m during the stirring peeling process, a blender is adopted during stirring, and the speed of a stirring rod line of the blender is controlled to be at 1-6m / S. The dry method processing process for the corn can remarkably improve yield rates of hominy chop with fat content below 1%, corn starch and embryos with purity to be over 80%, particularly embryo extracting rate and purity of the extracted embryos, and is remarkable in economic and social benefits.

Description

technical field [0001] The invention relates to a corn dry processing technology adopting stirring peeling and rolling peeling, which is suitable for a production line for crushing corn to produce corn grits, corn flour, corn germ and corn bran. Background technique [0002] There are two processing methods of dry and wet corn. The so-called wet processing refers to the method of producing starch and starch sugar products after soaking corn in water for tens of hours and then pulverizing them. Strict classification Except for the above-mentioned wet processing methods, all other processing methods including the processing method of corn for feed with only one crushing process belong to the category of dry processing. But now people usually say dry processing (comprising the so-called semi-wet processing with a small amount of wetting water) all refers to the processing method of producing corn grits and corn flour for human consumption, food industry and brewing industry. ...

AI Technical Summary

Problems solved by technology

Because the endosperm grains with a small amount of cortex and germ adhered to the pure endosperm grains of the same size and the germ grains with a small amount of cortex and endosperm adhered to the pure germ grains of the same size have similar densities and suspension speeds, it is difficult to separate them. The finished product rate of high-standard products in the corn dry processing industry in the world is very low (the data records that the average yield rate of corn grits and corn flour with a fat content of less than 1% in China is only 30%, and the highest in developed countries can only reach 45%, but Endosperm, which averages 0.8 fat in corn kernels, has an average of 83% fat!)

The low peeling rate in the peeling section and the output of broken grains during peeling are the root causes of the above-mentioned disadvantages in the prior art

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