STAND ALONE DRYER SAVES UP TO 30% OF COSTS
The Stand Alone dryer is a sensible solution for grain processing. By constructing a separate Stand Alone dryer with round storage silos, we can cut investment costs by about 30% compared to a dryer house. Set-up time for the cladded dryer and silos is short. The foundation costs are affordable.
Stand alone dryers are available both in continuous flow (Duoflo) and batch dryer (Mixflo) models.
The most efficient dryer category is DUOFLO.
This dryer combines the advantages of both batch and continuous dryers, making it a versatile “2‑in‑1” solution. DUOFLO performs best in situations where there are large volumes of grain with relatively low and uniform moisture content. If the optimal daily drying capacity is up to 300 tons of grain at average moisture levels, the MIXFLO batch dryer is the most suitable choice. When the requirement rises to 300‑1000 tons per day, DUOFLO dryers are recommended. Importantly, the dryer can always be switched back to batch mode if the grain moisture is too high for continuous drying.
From a technical perspective, DUOFLO differs from conventional dryers by having three zones instead of two, with the additional zone dedicated to cooling. It is also equipped with two bucket elevators rather than one, and a greater number of sensors to support automation. The dryer uses the Ultima automation system, which relies on grain moisture measurement as a guiding parameter. The process is continuous: grain is first collected in the buffer zone, then actively dried in the main drying zone, and finally cooled before unloading.
Geographically, DUOFLO dryers are most suitable in countries where winter grain crops dominate. In these regions, drying needs are moderate, but grain volumes are very large, and maize is not the primary crop to be dried.
For the best results, the dryer should be complemented with pre-cleaning equipment and ventilated buffer silos, along with a clear path for grain unloading into storage. For this reason, DUOFLO dryers are most often implemented as part of a larger project, where their efficiency and flexibility can be fully utilized.
Batch drying works also for wetter grain
Mixflo batch drying technology is used in the Antti Stand Alone dryer. In it, the grain is dried and recycled through the machinery in batches. It is a safe and easy way to dry grain.
In batch drying, wetter grain can be dried than in continuous drying. Advantages also include speed while avoiding overheating the grain. You can harvest the crop when it suits you. Dried grain is of higher quality and yields better.
The benefits of Mixflo
Antti Mixflo is extremely flexible in varying conditions. In a batch dryer, the grain is circulated through the drying section, drying and then equalising the moisture level of the grain in the top section, again and again, until the entire grain batch is completely dry and of top quality. The initial humidity does not affect the final result and there is no risk of overheating.
How batch drying works
In batch drying, the stages of drying – Filling, Drying, Cooling, Emptying – follow each other and are controlled by automation.
After filling, warm air is blown through the grain in the drying sections, which disperses the moisture in the grain. The feeder at the base unloads the grain from the lower part of the dryer and the elevator lifts it back into circulation to the top section of the dryer. The grain circulates in the machinery until the entire batch has dried to the desired level of moisture. Before being transferred to a store, the batch is cooled by directing cool air to the drying sections.