Feed & Additive Magazine Issue 4 May 2021

ISSUE FOCUS FEED & ADDITIVE MAGAZINE May 2021 53 Working at unison with ventilation, a temperature monitoring system allows for the control of the tem- perature over stored material and storing conditions. A system of probes inside of the silo provides timely readings of temperature and, in some cases, moisture, across the silo grain column. It is a passive system, which requires no maintenance. The probes can be re- placed without emptying the silo, and are supported on two beams avoiding tensions in the roof. Symaga offers an aeration system to meet cus- tomer requirements and cover all their grain stor- age needs: Aeration Roof Vent with circular design prevent- ing the accumulation of water, snow and rubbish and opposes less air resistance. It is easy-assembly, embossed, perfect-sealed with the roof section, and it comes with anti-bird net. It is prepared with a special sealing system for fumigation, and ready for the installation of an exhaust fan coil to avoid con- densation. Extractor fans embedded on the vents of the roof also work as part of an aeration system, removing out of the silo the air with potential of condensation. Central to the aeration system are the different aer- ation channels made up of foundation channels that are covered with special galvanized boxes, corrugated and multi-perforated covering between the 25% and the 30% of silo bottom. Channels come in different shapes, commonly known as “Y”, “H”, “C” if silo is conical concrete bottom, or “T” if it is a hopper silo. Fully Perforated floor: The fully perforated floor is supported by a floor galvanized steel structure. Perforations are of a diameter of 1 or 1.5 mm, de- pending on the stored grain. Brackets are made of hot dip galvanized steel, which allows a better air- flow and therefore better ventilation. Prefabricated gutter: Gutters are installed in silo foundation. This element is manufactured in 3 mm thickness galvanized steel, depending on installa- tion characteristics (size, width and depth of the silo and foundation, and the total volume of the stored grain). “Y”, “H” and “C” types available. A key element in every ventilation system is the fans in charge to move the air around. In Symaga, our fans have IE2 certification, ensuring energy efficiency. Hopper aeration: Aeration cannel system with drillings, fixed to a Hopper sector and prepared for connection with the fan. Ventilated cone: Elevated cone made of galva- nized steel inside the silo. The system avoids contact between the ground and grain, making civil works cheaper. Grain chiller: Improve grain preservation, avoid- ing fumigation. Minimize weight loss. Allows cool- ing regardless of environmental conditions. STEEL SILOS Symaga silo is manufactured in galvanized cor- rugated steel, with a minimum 600 gr/m² coating for all elements, but for the roofs, protected with ZM310 gr/m² steel sheets, ensuring a double service life more than other suppliers.. Steel galvanization (cover it with a cap of zinc to pro- tect it from the corrosion) is a common practice to protect the pieces of steel that are going to be exposed to adverse environmental conditions for a long time. Legs and bracing of our structural steel silos are hot-dip galvanized. Hot dip galvanizing process in a bath of molten zinc (or zinc – aluminum – mag- nesium)*. Steel coils are unrolled and prepared in three different phases: degreasing, pickling and flux-