Flexibility for milling

Excellent milling characteristics for high extract yield

Milling with the Variomill and Powermill technology provides excellent grist results from malt and raw grain. This means a top level extract yield and perfect lautering results. The Variomill family with its two-roller models V5, V10, V16, V20 and the four-roller model V25, covers a performance range suitable for small up to industrial breweries. The Powermill with its extra large roller diameter for a maximum grist milling rate complements the program.

At a glance

Exact control of a grist milling rate for a constant mash quality
Variable adjustment of the steeping water temperature and quantity, the steeping time and the milling gap
Model variants with an output of 5 tons per hour up to 40 tons per hour

Brochure Steinecker Variomill and Powermill

0.54 MB, .pdf

Method of operation

The malt hopper receives the weighed grist for a brew. Optionally, the malt hopper can be put on load cells.
In the steeping chamber, hot water is added for conditioning. The steeping grade can be influenced by controlling the water temperature and water quantity as well as by the action time.
The crushing rollers crush the conditioned malt using a software-supported milling rate control.
In the mash chamber, the grist is mixed with brewing liquor to obtain mash. This completely prevents formation of dust.

In addition to water temperature and quantity, the duration of action is the main factor used for conditioning control.
If the milling rate is specified, the duration of action will depend on the malt level in the steeping chamber. If the level is higher, the duration of action will be longer than for a lower level.
Feed roller 1 controls the level of the malt in the steeping chamber.
Feed roller 2 controls the milling rate depending on the power consumption of the crushing rollers.

The constant milling process results in a homogeneous mash quality and, at the same time, ensures an optimum roller service life.

The feed characteristics of malt and other raw materials vary in their quality. Closed-loop control of the grist supply is necessary in order to achieve a constant milling rate.
During the milling process, the motor output of the crushing rollers is the measurand for the milling rate.
The feed roller controls the feed according to the measured motor output.
After milling has been finished, the achieved rate is measured and the rated motor output is recalculated for the following milling process.

Variomill

The milling gap can be automatically adjusted within a range of 0.2 – 1.2 mm to exactly suit the different raw materials, such as barley malt, wheat malt or raw grain.
Temporary adjustment of the crushing rollers' wear is quickly performed by reducing the milling gap.
No production stop is required for adjusting the milling gap.

Powermill

The Powermill is equipped with the largest rollers of this mill class, with a length of 2,000 mm and a diameter of 510 mm.
A large roller diameter D allows a longer contact time T of the grist between the crushing rollers.
The length of the rollers provide a large passage area and ensure the efficient infeed of the grist.
This provides an optimum milling result with the best possible roller service life.

A straightforward and efficient plant technology ensures top mash quality and dust-free mash production.

The grist is mixed with the brewing liquor directly below the crushing rollers.
As a result, oxygen absorption is low and oxidation processes in the mash are reduced.
The mash pump with inducer prevents the formation of lumps and guarantees conveyance with low shear forces.

Your benefits

High yield

The adjustment of steeping times and temperatures ensure optimum conditioning of the grist. This is the basis for excellent lautering results and speeds.