Lees is the residue produced during the brewing process. Many people consider it a waste. In fact, distiller's grains are rich in crude protein and vitamins, and have high nutritional value. After the wet distiller's grains are dried, they can be reused as feed and fuel.

1. Energy consumption cost: Drying of distiller's grains requires the use of heat sources - coal, fuel oil, gas, and biomass. The costs of different fuels are different, and specific computer calculations are required.

2. Drying of distiller's grains requires dryers, conveyor belts and other equipment. The purchase of these equipment and subsequent maintenance costs will have a certain impact on drying costs.

3. Labor cost: Drying distiller's grains requires someone to operate the equipment, which is also part of the cost.
4. Other expenses: such as transportation fee, electricity fee, water fee and so on.

The cost of drying one ton of distiller's grains is very complicated and cannot be simply represented by accurate figures. If you need detailed data, it is recommended that you consult the relevant equipment manufacturers.