For many decades, goldsaat has been successfully working in the drying process and initiating some decisive developments.

The goldsaat continuous drying systems, which can be enlarged to cover capacities of 0,5 to 150 t/h, are of modular design. They have been built to up-to-date economical and ecological knowledge.

Our advanced developments focus on smooth and biological drying of consumer grain, brewery barley, seed corn, maize, oil seeds, pulses, rice etc. and establish priorities on energy-saving equipment.

Both established, as well as completely new drying techniques, equally influence the design of new plants. Not only the Drying process for yellow corn (i.e. drying by warm air and subsequent aeration in a silo) is used but also care is taken for an optimum energy exploitation by heat recycling, to increase the drying capacity and to decisively improve the quality of grain.

The goldsaat cascade system is made of corrosion-proof light metal alloy which offers both, long lifetime and smooth and non-clogging throughput.
Furthermore, the warm air sections are insulated against energy loss, while blower fans may be optionally fitted at discharge or suction side.

High efficiency is one of the remarkable features of goldsaat air heaters.
Depending on the actual application, they are direct or indirect acting, whereby the indirect acting one may be optionally completed by a change-over switch to cover both operating modes.

Air heaters by goldsaat reach capacities of up to 2800 kW (approx. 2,4 Mcal / h).

The goldsaat moisture controller may be extended to fully automate the drying process and thus prevent under or over drying and reduce necessary supervision by staff to a minimum.

Almost any problem may be resolved by goldsaat!

We have always been dedicated to supplying products of high quality and reliability. Therefore, goldsaat ceiling duct continuous driers are made of corrosion-proof sheet metal alloyed by aluminiummagnesium.

Many installations of our early days are still working to the satisfaction of our clients. This is certainly one of the reasons why goldsaat remains one of the top addresses in dryer construction.

After filling the plant with moist maize, external air is sucked in via axial fans and heated in the warm air column from where it will enter the air distributor of the drying column, run through the maize and thereby absorb moisture.

Saturated exhaust air will pass the unit via deflector hoods while partly saturated warm air will return to the fresh air in the lower section of the exhaust air column.

Drying and cooling sections may be modified by adjustable pneumatic flaps, and the warm air temperatures selected by control units.

When the maize has reached the final degree of moisture, the moisture controller ensures that the dried product is released via slides (discharge system) and transported
away by conveyors.

Flat bed driers are an alternative to continuous driers and especially suitable for viscous goods.Uniform and careful drying is guaranteed.

They are used for the drying of cotton, acorns, carobs, shred products, oil seeds, pepper, grain, rape, maize, etc.

The moist product passes the big wall-mounted drawerlike canister and falls onto the drier’s floor. Thickness of layer is adjustable and dosing done by feeding cylinder or slide valves.

The moist product will be transported and turned by rotating turner. Transport speed of dried product is adjustable so that the drying process as well as the amount of moisture extraction may be regulated.

The product is dried by warm air which is generated by directly or indirectly fired durable goldsaat air heaters and the temperature automatically controlled by thermostats.

For the feeding of warm or cold air, silent goldsaat radial fans are used which will evenly press warm or cold air through the product to be dried.

Having passed the drying and cold air section, the dried product will reach the outlet.

Due to time-controlled stopping of turner, the dryer may also be used as salt dryer.

For all control functions, GUF-dryers will be supplied with a completely equipped control unit, including timer for the regulation of drying capacity.

To comply with different demands of practice, you may choose between three systems:

This hood type which covers the whole GUF drying surface allows a dust-free drying process since the arising dust will be directed to cyclones or dust filters connected to the outlet side.

This execution is especially suitable for residential areas.

With this type, only the roll-over carriage will be intensively cleaned since most of the dust will arise here.

Dust will be blown through the rubber plate pipe which is positioned above the dryer into the cyclone or dust filter.

This type is provided with lateral rubber cloth to:
• ensure dust-free drying process
• observe the dryer bed or control the product being
dried
Dusty air will be evacuated by air exhausters.

For the drying of paddy-rice, goldsaat has developed special dryers which have proven reliable in many rice cultivating countries under most severe conditions.

Very good drying results are not only achieved with Paddy-rice, but also with peeled rice, any cereal, pulses, coffee, fine seeds etc. It does not matter if drying is done by one or more passages, in one or more drying columns. With the correct temperature careful drying is always guaranteed and cracking or damage of corn avoided.

Temperature control by thermostats ensures simple operation. Using the goldsaat moisture controller will automate the drying process, even with bulk goods with most different moisture contents.

To generate warm air, we recommend the oil fired goldsaat air heaters which work either direct or indirect..

Lifetime of goldsaat dryers is practically unlimited. Every part in contact with the corn – such as lateral columns and air distribution systems – is made of aluminium.

A certain quantity of magnesium makes the „soft“ aluminum hard and the surface resistant. The corrosion-proof material is especially suitable for outdoor installation.

But the most important aspect is provided by experience:

Due to the fact that aluminium is smooth and not treated, microorganisme and larva are deprived from refuge and fertile soil.

To ensure that almost every corner of every single grain is exposed to the same stream of warm air, we concentrate on a uniform distribution of warm air within the dryer column.

This is achieved by air distributors, shape and space of which enable careful drying, even with higher temperatures. Furthermore, rooflike installations make sure that the grain is deflected to different directions and, at the same time, moved.

Arrangement of air distributors changes from open to closed. Air does not only cross the flow direction of the product but also deflects upwards and downwards within the product.

Thus, process air in the dryer column is a combination of axial-flow, unidirectional flow and crossflow.

Trapezoidal profiles with high-quality synthetic coating protect against weather conditions and mechanical damage.

We may not only provide individual painting but also special isolations to prevent heat loss and reduce the noise level.

For dryrs, goldsaat exclusively employs high performance fans, efficiency of which exceeds 80 % by far.

Special formation of fan wheels and special design of the case spiral ensure that excellent fluidic results are achieved.

Above all, good guidance of air during deflection and optimized reduction of losses by gaps lead to ideal utilization of the fan.

In order to reduce the noise emission only fans with low rotation speeds are used. Vibration dampers and flexible sleeves will almost completely absorb vibrations..

goldsaat recirculating dryers are especially characterized by uniform drying and good energy exploitation.

Due to the fact that the product is permanently mixed, thermal load of grain is reduced, thus air temperature in the dryer may exceed the temperature that is acceptable with drying of immobile layers.

This type of dryer is equally suitable for cereal, maize, rape, sunflower seed, peas and beans.

In addition to optimum design and position of air distributors, the delivery system helps the grain to leave the column in uniformingly dried condition.

As soon as the required moisture content is reached, a pneumatically activated slide valve which is fitted below the discharge opening of the drier column will release openings for a certain period of time and thus lowering the grain in batches and in layers.

A moisture controller will provide the necessary impulse to control the speed of the pneumatic cylinder.

Until today, drying light products demands for considerable throttleing of air to avoid riping off the grain from the column.

The collecting pockets (DBGM) have been designed for installation to the orifice of the air distribution channel, on the moist side of the air.

Thus drop in performance – e.g. with rape drying – is a thing of the past.

goldsaat dryers operate fully automatic Special attention has been given to reliable operation which is demonstrated by a burner that supplies the grain with an acceptable quantity of heat only.

The grain itself will leave the dryer only after the scheduled moisture content has been reached. Required data is fed to a contoller and may easily be verified at the display. A safe and user-friendly control that you will become acquainted with quickly.

The moisture controller is an ideal supplement to the delivery electronics and automization of the drying process. It consists of 2 electronic on-off-controllers with digital indication of the actual value, ideal value controller and 2 Pt 100 thermistors.

This moisture controller must ensure that a pre-selected final moisture content of the product being dried is reached and kept, even with bulk goods of different moisture contents.

Both Pt thermostats which are installed at the beginning and at the end of the drying section determine the temperature of the grain and transfer these values to the electronic control (SPS).

This in turn regulates the throughput speed through the slide valves on the delivery system. Depending on sensed temperatures, the delivery system will operate faster (with dry bulk goods) or slower (with wet bulk goods).

Modern goldsaat air heaters and utilized blast burners require little maintenance and are insensible to trouble. They work safely and automatically.
With indirect air heaters, the process air will be guided across the heated exchanger surface whereby it will be heated up. Fumes must be deflected through a chimney.
Air heaters operate economically and provide excellent firing efficiencies of more than 92 %
With direct air heaters, fumes mix with process air and float the goods being dried. Whilst application is restricted (bread grain!), quick heating
and almost 100 % energy exploitation are most
advantageous features.
Upon request, goldsaat air heaters are supplied with change-over device for direct/indirect heating which allows for direct drying of maize and indirect drying of grain.
Warm air may be also generated by steam or water heat exchangers which are fed by e.g. a district heating station.
We also supply gas-fired surface burners which are installed into the warm air hoods of the driers..