Miller Magazine Issue: 139 July 2021

68 COVER STORY MILLER / july 2021 CLEANING PROCESS Cleaning is the process that removes from the bulk the foreign particles. Buffer Silos After cleaning process, buffer silos should be installed. Why? Because drying process tend to be the bottleneck in every single storage plant. Ventilation system: should be calculated depending of the grain we are going to store. Exhaust fans: to prevent condensation. Over-head cone: This system allow a FIFO flow sys- tem , guaranteeing that all grain will remain inside the silo the same period. DRYING PROCESS Drying is the process that reduces grain moisture con- tent (MC) to level where it is safe for storage. Initial factor: at harvest time the grain used to contains high MC. Drying process: Using the ambient air with a low rela- tive humidity or heating air. This will evaporate the mois- ture from the grain. Drying rate and temperature: Seed, should never exceed 43 ºC Grain pro cessed: should never exceed 60 – 65 ºC Recommendations: • Dryer election will depend on your technical require- ment. • Get the knowledge from the dryer manufacturer: training. • Clean before dry. Impurities in grain bulk reduce the air flow and make it non homogeneous flow creating CLEANING PROCESS Moisture content required for safe storage for different storage periods.