Distillers grains have a high acidity and a moisture content of more than 65%. They have strong biochemical properties, are easy to rot, and are inconvenient to store. If they are not disposed of in time, they will easily cause great pollution to the environment. On the other hand, as a by-product of liquor production, distiller's grains are rich in nutritional ingredients such as crude protein, crude fat, crude starch, crude fiber, and nitrogen-free extracts, and are rich in inorganic elements such as phosphorus and potassium, as well as pentose and total sugar. Ingredients are a good source of organic fertilizer. The use of abundant lees raw materials to make organic fertilizers can not only solve environmental problems, turn waste into treasure, but also provide an organic environment for green agricultural production. It has high economic, environmental and social benefits.
Take a large amount of distiller's grains, evenly sprinkle distiller's grains with 2 ~ 2.5% of quicklime, 3 ~ 5% of straw and 1 ~ 2% of sawn wood surface, mix well to complete the fermentation material preparation. Spread the bacteria evenly on the prepared fermented material according to the ratio of distiller's grains 0.2 ~ 0.3%, and ferment for 3 ~ 5 days. The temperature of the stack is raised to 60 ~ 65 ° C and the stack is full of mycelium. After 2 ~ 3 days, the temperature of the stacking rises again to 60 ~ 65 ° C, full of mycelium, and then the pile is turned; the fermentation high temperature period is entered after 8 ~ 10 days to keep the stacking temperature not exceeding 65 The principle of ° C adjusts the frequency of turning the heap; the fermentation cycle is 20 ~ 25 days. The temperature of the stack decreased to below 50 ° C, the compost moisture was about 35%, and the appearance was brown, taupe, or black. The physical structure was loose and there was no foul odor. The compost had been put in place when fermentation was stopped. Crushing and sieving: After the fermented material passes the post-maturity period, it is crushed with a semi-wet material pulverizer, and then sieved through a 3 to 4 mm roller sieve to the final product of lees organic fertilizer.
Process of producing organic fertilizer production line
Winery distiller's grains + fermentation fungus agent + auxiliary raw materials (crop straw, etc.) → pre-mixing → fermentation tank → turning machine → fermentation (7-8 days rot, dehydration, sterilization, deodorization) → out of the pond → powdery organic fertilizer (Or use as raw materials for granulation and deep processing to produce round pellets of organic fertilizers) → ingredient measurement → multidimensional mixing →fertilizer granulator
granulation → polishing and shaping (3.5-4mm spherical pellets) → low temperature drying → normal temperature cooling → classification screening → finished organic fertilizer → Measurement packaging