Gamasa screening station

First Phase:

Known as Beginning phase of the screening, in which the raw grains to be screened are placed before the allotted ground with dimensions 13 × 1 meters and the angle of inclination is about 30 degrees above the ground to make the raw grain pass through the ground network so as to remove large impurities through a hole with a diameter of 25 to 30 cm, where they are virtually lifted to passage of the eye sieve through what is known Balsaqah.


Second Phase :

The grain is Raised to the eye pit of wheel at a height of 8 meters and through the process of withdrawal, the raw grain to be screened are passed through Tubes known Basmamasim which has parallel tubes through which compressed air passes via the blower to suck dust and dirt . This is done so as to avoid causing pressure damage to the first sieve with three stages, where they pass the raw grain in the first phase through a flat metal with a diameter of 1.7 mm. The holes reserve a fraction of small grains, impurities and micro clay pebbles which are smaller than a pill and then the raw grain is passed to the second phase in three stages of the sieve . The grain passes through a rough metal surface with round holes of diameter of 3.50 mm called chick eye so as to remove granules, mud, straw and any other residues larger than 3.50 mm. The third stage of the three sieve process comes up where they pass the raw grain through flat metal with holes of diameter 2.25 mm to separate the rough grains of less than 2.25 millimeters with other grain seeds. As instructed by the Ministry of Agriculture, we aim to standardize the size of grain seeds between sizes 2.25 mm to 3.50 mm depending on the type of crop . This phase will be reviewed on an another sieve with the same specifications as earlier and sheet openings for longitudinal sieve while the high-waste can be separated by not passing them through the first sieve.


Third Phase:

In which the raw grain is pulled through the vertical Wheel until it reaches another sieve called the graphite sieve with the aim to separate any residue or stones mud which is equal to the same size of the raw grain from namely 2.25 to 3.50 mm . This is the stage compressed air is pumped from the bottom of the sieve up to the metal surface for rapid wobbly regular vibrations until the raw grain seeds from any other waste equal in size, but with specific weight difference are separated. The grain seeds of equal size and equal specific gravity are then passed through..


 The fourth phase: 

Known as cleanser phase, mildew is applied to the seed grains of wheat, corn with the aim to clean them thoroughly and then three types of disinfectants (Primus, Vallosan, Raksil) are added. These disinfectants are in line with the instructions of the Ministry of Agriculture, since they help in the protection of these grains at the farming fields and are immune to fungal infection of the roots.

 After Taking into account and examining the type of each grain, the disinfectant is mixed with it to purify and save them, after which the dried cereal seeds (especially corn and wheat) are mixed with mildew cleanser because of the high relative humidity result it provides in addition to a liquid cleanser. It is then adjusted to dry at a temperature of 25-30 ‘C depending on the degree of grain moisture treatment in order to attain 12% humidity.


The fifth phase:

Known as the suction and waste collection phase pertaining to each of the previous four stages where it is routed to a filter cloth behind the entire screening line machines. The company is proud that these filters are consistent with the World class filtering found in both Brazil and Japan. But here in Egypt and in our company specifically, the minds of engineers and technicians are put to work tirelessly in order to collect all of the waste residues at once and in one place to protect the environment. They are also used in food industry to feed the animals and for the materials in the brick factories towards construction.


The Sixth Phase:

This is the phase for the process of packaging and weight measurements. Here the grain after passing from the main reservoir is dried, packaged and weighed. A device with storage capacity of 2 ton compound depending on the balance of package is set and calibrated before packing on the weight required. It is usually 5 kg for the corn and 30 kilograms for wheat and rice under the balance of compound conveyor. Automatic sewing machine stitches the sacks which are weighed at the end of the process. There is a Digital balance for weight control with the required accuracy and emphasis on the examination of Lot card numbers.