Distiller's grains are by-products of winemaking, mainly composed of alcohol, protein, cellulose and so on. After drying, dry distiller's grains can be obtained. This dried distiller's grains are used in a variety of ways:

1. Organic fertilizer: distiller's grains contain a variety of nutrients, including nitrogen, phosphorus, potassium, etc., which can be directly used as organic fertilizers after drying, which can provide the nutrients needed by plants, and can also improve soil structure and increase soil fertility.

2. Feed: Distiller's grains are rich in protein, cellulose, minerals and other nutrients. After drying, they are high-quality protein sources and energy sources in livestock and poultry feed. After mixing and processing, it can be made into high-quality feed and improve the immunity of animals.

3. Biomass fuel: After the dried distiller's grains are mixed with other biomass materials, they can be made into biomass fuel through compression molding.

4. Other uses: Distiller's grains can also be used as food additives and pharmaceutical intermediates after drying.

In a word, distiller's grains can be used in many ways after drying, and can be used flexibly according to their nutritional components and characteristics, which is of great significance for improving resource utilization and environmental protection.