Process for roasting oilseeds and apparatus for carrying out this process

摘要

Oil seeds, e.g. hazelnuts, coffee or cocoa beans, are roasted in two stages, in the first of which the seeds are pre-treated for 3 to 20 minutes, pref. 6-8 minutes, at 70 to 150[deg]C and a relative humidity of 3 to 30%, then being processed in a dry atmos. and at a high temp., e.g. 190[deg]C. Temp. during pre-treatment is pref. 100-110[deg]C and relative humidity is pref. 8-9%. Also claimed is a roasting machine with a container (40) and stirrer (1) with nozzles (50,52,53) emitting hot gas through outlets within the roasted material. Distance of the nozzles from one another in the tangential view of the stirrer decreases from the centre (42) of the container to the container wall (40).