The MICRONIZING MILLS are used to pulverize all kinds of minerals and soft or hard materials. The grains obtained range from 15 to 300 microns, with a thorough separation at the upper limit of required fineness.
The GRINDING CHAMBER is lined with seven plates made of special wear-resistant materials, each one very easy to replace. Foreign bodies which might enter this chamber are pushed to a special compartment for withdrawal.
The ROTOR, dynamically balanced, is provided with inclined grinding shoes easy to dismount.
The micronizing mill is, jointly with the classifier, at the heart of our CLASSIFYING INSTALLATIONS that are carefully designed and built as an assembly in which all the integrated equipment works as a whole with the maximum attainable efficiency.
The CLASSIFIER, with rotary cage, is provided with a speed converter to achieve the different degrees of fineness without having to change the cage.
Since the speed is regulated stepwise, the smoothness required can be accurately achieved, adjusting to the needs of the production process in each case. The rotary cages are interchangeable which permits the extension of the classifying field without loss of time.
The DUPLEX type mills fabricated by GRUBER HERMANOS are characterized by a very rugged and experimented design, which bestows them with very low maintenance expenses and an almost non-existent quantity of breakdowns, so that a very long operating life cycle can be achieved.
This category of mills is indicated to reduce the treated materials to particle sizes greater than 500 microns, obtaining the desired production and a very regular granulation.
Our fabrication range offers an extensive range of DUPLEX MILLS, allowing us to offer you the right mill for each grinding need. The competitive prices, together with the quality of the materials used and the design adjusted for each specific need make the DUPLEX MILLS most suitable in all the industry sectors.
DUPLEX mills are manufactured with different grinding systems, always chosen in accordance to the treated material, the size of the entering fragments and the final particle size to be obtained.
The hammer mills fabricated by GRUBER HERMANOS, S. A. are used in grinding processes intended for not very abrasive materials of medium hardness in which the desired particle size at the output is greater than 1 mm. Our machines can be employed as crushers or mills, by means of adjusting an interchangeable screen of convenient calibre.
Hammer mills are designed to attain the maximum possible strength: hardened hammers are built with resilient, wear proof materials. Big diameter hammer bolts and over-dimensioned shafts are fitted.
The interior of the mill is lined with easily interchangeable plates. Liners are made of materials whose grade of wear resistance is in accordance with the treated product.
The mill body splits into two parts to allow easy access for adjustments and replacements. In the bigger models the opening of the body can be assisted by hydraulic elements.
The sieves or screens can be effortlessly extracted from the mill body. This allows the quick unloading of the grinding chamber in case of unexpected power failure or shut down.
GRUBER HERMANOS crushers are indicated for milling processes involving non-hard, little tenacious materials. They are also used in pre-milling stages, in order to reduce expenses in a subsequent milling process.
The constructive characteristics of this equipment are founded on the simplicity of its construction and on an over-dimensioned shaft capable to support all the strain generated in the breaking process. This translates into a very long, maintenance free, working life for the crusher.
The rotors of our crusher-breakers are built with high grade wear-resistant steels and supported by bearing blocks placed away from the main body of the machine, thus remaining free of dust, increasing their useful life and reducing the maintenance costs.
When the crusher is equipped with a grid, a screwed lid is fitted to one side of the machine so that the interchange of grids is made simple and quick.
