The Origin of Raymond Roller Mill Raymond roller mill also known as the suspension roller grinding mill, the full name of English: Raymond roller mill, is a kind of milling machine imported from abroad. 1. Who invented Raymond Roller Mill? In 1906, C.V.Grueber founded the Curt Von Grueber machinery factory in the southern suburbs of Berlin. Using his patents in the United States, he produced the first Maxecon mill and used it as a coal-fired equipment for the MOABIT power station in BEWAG in Berlin. The grinding energy can reach 5T/ H, sold nearly 600 units in a few years, respectively, used in the field of grinding in different industries. After E.C. Loesche became a shareholder and headed the Curt Von Grueber machinery factory, he decided to purchase the US patented raymond centrifugal ring roll mill to produce the first Raymond roller mill system. However, since the grinding power (centrifugal force) of the Raymond grinding wheel was limited by the diameter and sp...