Hein, Lehmann GmbH

Hein, Lehmann GmbH is a family-owned company founded in 1878 and headquartered in Krefeld, Germany, specializing in screening, conveying, and separating technology for industrial processing applications. The company's product portfolio includes CONIDUR fine-hole and slot perforated plates manufactured through a proprietary process that produces triangular to semi-elliptical perforations for reduced blockage and higher throughput; RIMA and CORIMA wedge wire screens in welded or looped construction designed for virtually clog-free operation with maximum open screen surface; wire conveyor belts with over 70 years of development experience, available in wide-spiral and wire link configurations including the 870 LaK model; LIWELL screening machines operating on the proprietary Spannwell principle, effective for difficult separations and extremely moist bulk materials with over 40 years of global deployment; and raw material screens available in wire, Vibro-Flex, Lemanit-polyurethane, and rubber constructions, compatible with all conventional screening machines or custom-sized to specification. The company's three core process technology areas are processing (crushing, drying, granulation, recycling, mixing, agglomeration, sifting, dewatering), conveying (cooling, heating, pneumatic transport, aeration, charging, stacking, hardening), and separating (filtration, centrifuging, sifting, classifying). Hein, Lehmann serves the stone and earth, food, chemical, pharmaceutical, automotive, plastics, recycling, starch processing, and mining and metals industries.