Claudius Peters has received an order for the engineering and supply of a 28,000t multi-cell cement silo for NUH Cimento Turkey. The commissioning of the silo will take place early next year.The silo has a diameter of 24m and a total height of 70.5m. It comprises of one inner cell of 12.5m diameter and three outer cells. Each one of the four cells is designed for 7000t storage capacity. A bucket elevator and an aeroslide conveyor system with aeroslide two-way gates feed the 4-cell cement storage silo. The four cells will be used for the storage of different cement types. The silo bottoms of the four cells are equipped with the patented Claudius Peters designed Inspection Chamber incorporating the proven expansion chamber principle with an accessible inspection chamber. The principle of the expansion chamber is to achieve a free and unobstructed material flow. The inspection chamber design results in an annular expansion chamber and a ring channel that is equipped with circumferentially arranged airslides slanted to the discharge. The aerated bulk material flows from the silo via the expansion chamber to the discharge points. Excess air is allowed to vent to the inspection chamber. This ensures that the discharged cement carries a minimum of aeration air. This design feature is essential when carrying out bulk loading of tankers, particularly when the flow is reduced at the end of the loading cycle to a trickle of 50 t/h. During the trickle flow phase the cement has the same reduced air/cement ratio as during the coarse flow phase when the truck loading is in the range of 200 - 250 t/h. Silos without the internal air expansion/early venting feature as offered by the Claudius Peters expansion chamber principle have varying levels of material aeration. This can be detrimental at the end of the truck loading cycle, as with the reduced material flow the air/cement ratio is increased, causing the cement to become highly aerated. This can cause delays in fully loading the truck as additional time to allow the cement to de-aerate in the truck (instead of de-aeration in the Claudius Peters Inspection chamber) may be required, which can reduce the overall loading rate. The design has made provisions for one additional discharge outlet rated at 250 t/h (for feeding the future packing plant) to be added to each one of the four cells without any modification required to the cell bottom.
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