... Often, indirect heated dryers are used when product contamination is a concern.3. Rotary Kiln Dryer main technical parameter: ItemsDescriptionAssistant ... charcoalIODINE 1000mg/g 3-4MT/DAYA: water purification material:B:air clean :C:MSG D:alcoholE:medicionF: Chromed platedG ... bricks . together with steam . with windowns holes outside.A:boiler,B:steam tank ,steam pipes,water pipes,valve,pressure meters, ...