Re-drying

Description

Re-drying -After threshing, the cut lamina has a residual moisture content of 18 percent, which is too high for it to be stored safely for a long period of time. Therefore, the tobacco is first dried to eight or nine percent in a re-drying plant, cooled and then re-moistened to about twelve percent by steam condensation. Performing the process twice pays off because a uniform final tobacco moisture content is only achieved by overdrying the tobacco and then remoistening it. The lamina tips and the stems removed during threshing are also subjected to a re-drying process.