UMS Short Milling System
Where high extraction flours are required the Discmill®-based Short Milling System provides an economical and effective option.
A typical case is the production of flour for Egyptian balady bread: This flour is produced at an extraction rate of 82% and has a maximum ash content of 1.0% dry basis. Granulation is quite coarse, the flour must pass through a 355 micron screen, and there is no requirement for extremely high starch damage levels. Utilizing the ability of the Discmill to produce high endosperm releases in a single operation the system is kept very short in comparison to a conventional mill, leading to substantial economies in capital cost and building space.
Pre-crushing the wheat improves the effectiveness of the Discmill grind and a rollermill is used after the Discmill passages to scrape any adhering endosperm from the bran. Bran finishers can be employed to supplement this function.
The UMS Short Milling System can be tailored to suit the production of other long-extraction flours or wheatmeals.
Economical capacity increases using the Discmill®
The Discmill® can be used to increase mill capacity by supplementing the existing first break rollermills. In this application the additional wheat is first ground on Discmills and then fed into the existing first break sifter sections which, due to the finer nature of the Discmill grind, can often handle increased capacity. In some cases it may be necessary to supplement the break sifter surface but, even so, the cost of this "bobtail" solution is lower than more conventional methods.
The Discmill® can be used in the reduction system to grind semolina and middlings into flour, supplementing the existing roll surface and allowing capacity to be increased. A single Discmill can produce a 60% release of fine flour at a capacity of 1.5 to 2 tons per hour when used in place of a head reduction rollermill. The Discmill achieves this performance despite its simple, compact design and with no excessive heat or vibration. Bran particles present in the feed to the Discmill are largely undamaged by its action and can be removed on the subsequent sifter section. Where a high level of starch damage is required it is necessary to retain some smooth rollermill passages, but where there is no such requirement Discmills can replace all roller mills and flake disruptors in the reduction system.
By grinding break middlings into flour, before the break middlings redressers, the load on the reduction system can be significantly reduced. This technique is of particular benefit in mills that handle both soft and hard wheat, allowing full capacity to be maintained on soft wheat by reducing the burden on the reduction system sifters. The Discmill is ideal for this purpose.
An alternative to roller mills
Although roller mills are vital components of the modern flour mill they are complicated and expensive devices that should only be used on those applications for which they are best suited. Whether you are planning a new mill, a remodel of an existing mill or just looking for a little additional capacity, it will pay to consider the alternative - the UMS Discmill®.