Tertiary DDC-Sizers | McLanahan
Know MoreUnlike Primary and Secondary DDC-Sizers, which feature inward rotating rolls, the tertiary design features outward rotating rolls This provides two crushed product streams in one machine and allows feed material that is already to size to pass through the openings between the rolls, minimizing additional fines from inter-particle crushing...
Economic sector - Wikipedia
Know MoreSecondary: involves the transformation of raw or intermediate materials into goods eg manufacturing steel into cars, or textiles into clothing (A builder and a dressmaker would be workers in the secondary sector) Tertiary: involves the supplying of services to consumers and businesses, such as baby-sitting, cinema and banking (A shopkeeper ....