Process technology over the last 50 years

Over the last 50 years, the technology used in compound feed production has changed quite a lot. Here we take a look at the changes in the equipment used over the years. By Thomas van der Poel, Animal Nutrition group, Wageningen University, Wageningen, The Netherlands As students in the early 70s, we were taught the principles for size reduction on examples of roller milling from the wheat (food) flour industry. We were also told that so-called hammer mills and pellet presses were used in the a