Things to Understand While Purchasing Grain Silos

Grain Storage in metallic grain silos is most cost effective, economical and long-term storage system. Grains in silo can be monitored real time for its quality and quantity very efficiently. Spillage and grain spoilage is minimum is Silo Storage system. Other advantage of storing grains in silo includes high speed handling of grains, effective fumigation, less dependence on labor and very less operation cost. Hence buying Grain Silos to store grains is a big financial and strategic decision and its must taken with full understanding of metallic silos and its accessories. While setting up specifications for Grain Silos the following points must always be considered.

Flat Bottom Vs Hopper Bottom Types

This decision is very important considering the fact that Flat Bottom Silos always work on “First in Last Out” principle. In case you are looking for Fist in First Out kind of operation then Hopper Bottom Silos are only choice. Flat Bottom Silos are good for large storages from 500MT to 20000 MT of grain in one silo. Bottom Hoppers are generally small silos and maximum capacity may go to 1500 MT only, however more 1000 MT capacities in bottom hopper silos are not economical.

Further, wherever a constant feed is required, Hopper Bottom Silos are preferred as Mill Feeding Silo or Process Silo because in Hopper Bottom Silos 100% grain flows through the discharge gate by gravity. In Flat Bottom Silos only 85% flow is gravity flow and rest is by Sweep Auger.

Design Considerations

Always specify the bulk density and Angle of Repose of grain in Stock pile condition of the grain which is to be stored inside a silo. Maximum Wind Velocity and Seismic zone category are other most important design criteria and must always be specified before buying any silo. Maximum and Minimum temperature difference must also be considered as it helps designing the ventilation system better. Improper ventilation in silo results in condensation problems in side silo.

Corrugation Profiles

GI Corrugated Sidewall sheets are generally available in 2.66 “ and 4” corrugation sizes. This aspect does not matter much as each company has its own design. Onl