This screw conveyor, delivered to a foreign customer at a pulp mill, was exceptionally large indiameter, with a total weight of 9,300 kg. The shaft tube was lined with a Duplex plate, and the threads were also made of 12 mm Duplex. To ensure safe transport, a separate metal carrier platform was made for the screw. Typically, the manufacturing process starts from a customer baseline image, which Siirtoruuvi uses to design and manufacture a product that is appropriately dimensioned and suitable for the customer. The lead time is always determined on a case-by-case basis, but averages about 4 months including manufacturing and delivery.
Siirtoruuvi also supplies the pulp and paper industry with shredder screws, screw conveyors for horizontal and vertical transferring of materials, for dilution, separation, washing, dispensing, and special/composite screw conveyors for a variety of customer process needs. In the pulp and paper industry, screw conveyors are required for various process steps such as industrial wastewater treatment, pulp production, transport and drying. The application also includes the manufacture of starch and by-products, treatment of wood pulp and wood chips, as well as handling of recycled materials.