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the alchemy of a transformation

At this time, let us retrace the various steps that characterize the transformation of a simple kernel of wheat to semolina and bran.
The sowing of grain occurs when special machines are used to sow seeds. The flower of the grain is an inflorescence called ear of wheat composed of a central axle in a zig-zag shape in which approximately 25 little kernels are inserted in 25 little ears of wheat.
From each ear of wheat at least 500 dried fruit called kernels develop because it is formed by only one seed.
The harvest of the ripe wheat occurs with the help of a machine called mietitrebbiatrice which consists of two different operations: the cutting of the entire plant (mietitura) and the separation of the kernels from the rest (trebbiatura).
The stocking of the prime material occurs in silos and is proceeded by the pre-cleaning.
The true and pure cleaning of the grain kernels, using special equipment, allows the elimination of all the impurities such as dust, foreign seeds, stones, hay, vetch and non-conformed kernels. The passages occur in sequence through a series of magnets, spietratori, svecciatori, hydro-metre tables and brushes:
the magnets are placed along the path to separate the metal pieces that can be present;
the spietratori are composed of a leaning sifter attached to an ascending current which makes the cereal float, while the stones emerge on top and are eliminated by the lateral dumpsters;
the svecciatori are constituted by rolling metal cylinders in which the alveolus mantles made according to a template are placed on the internal parts. The genuine cereal in its elongated shape is not treated by the alveolus mechanisms and slides towards the special exits;
the hydro-metre tables, at the same rate of the spietratori operating by inclination and ascending air flow, separate the remaining parts of the cereal that are recovered by the foreign seeds rejected by the svecciatoio;
the tares using recycled air are stable machines used to separate by air the bristled products and extract lighter parts such as the bran, black spots and similar ones with the utmost efficiency and the minimum effort.
One of the assets of our production technology is without a doubt the modern optical selection electioneer that selects and classifies the lighten-coloured kernels and the unrelated pieces present in the hard wheat, based on the optical recognition of diverse impurities that pass by at high speed, thanks to the combination of advanced video cameras and algorithmic capacity of calculating the shapes of the products.
The selector constantly releases the undetected imperfections thanks to the best resolution and to its high signal/noise rapport that fully takes advantage of the video camera sensors and the infra-red sensors at high resolution.
The conditioning of the grain occurs when the humidity is increased in order to allow, in the phase of grinding, the separation of the bran parts and the grinding of the ear of wheat which follows.
The decortication is a process to eliminate the bran part of the grain which occurs without ruining the integrity of the ear of wheat, allowing an the maximum sanification of the same.
Our company, has always been avant-garde in our new technology and production, already implementing, since 2006, the procedure of decortication pre- grinding in order to improve the mill grinding performance.
The preventative elimination of the tegumental layers through abrasive and friction action conducted on a grain, allows the noticeable simplification of the diagram of grinding reducing the number of machines it takes and the relative steps, bringing an additional series of advantages.
The grinding as a final step transforms the kernels of the cereals into pulverized, more precisely, endosperm, that includes an amilifera part and the aleuronic layer, which is separated by the tegumental parts and by the germs. From the endosperm amilifero the refined semolina is recovered, and from the tegumental parts, the bran.
The phases occur through a variety of machines called rolling mills, low buratti ( planchsister) e semolatrici:
The rolling mills are diagonal machines with six rolls, that allow the regrinding of the cereals, crushing them and reducing them.
The low burette ( planchsister) are machines which sift the products ground by the rolling mills, or another type of crushing plant, and, therefore separate the semolina from the by- product.
The semolatrici are machines used for cleaning and calibrated selection of the semolina of the hard wheat.

 

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