Milling Journal - Q4 2008 - (Page 14) Developments in Flour Milling Miller explains advantages and disadvantages within the milling industry. Technical Manager Rami Flamer has been milling at the Shalom Flour Mill in Petach Tikva, Israel since 1982. In this article, he discusses the developments of flour milling through the decades. It was edited by Milling Journal for content and length. Around 1950, the roller mill’s specific length in a typical flour mill was 57 mm/100 kg/ 24 hours, and the sifting area The milling industry is very was 0.34 m2/100 kg/24 hours. conservative. The first roller In the 1950s, the primary mills were built by Friedrich new development was the Wegmann and Abraham Ganz change of the roller mills bearat the end of the 19th century. ings from slip phosphor-bronze The first plansifters were built to cylindrical roller bearings, by Carl Haggenmacher at the which increased the potential Rami Flamer start of the 20th century. velocity of the roller mills from Through today, roller mills and approximately 350 to 450 rpm. plansifters remain the primary machines The specific length of the roller mills was used in flour milling. reduced to 30 to 40 mm/100 kg/24 hours. Later Improvements In the 1970s and 1980s, the sifting capacity of plansifters increased to approximately 0.06 m2/100 kg/24 hours. This enabled milling to be done without purifiers. At the beginning of the 1990s, as a consequence of reduced profits in the flour milling industry, millers looked to reduce the number of machines and amount of floor space required for them. Mill operators also sought to reduce the required manpower in flour mills by introducing computers and high-tech equipment. Eventually, some mills were able to operate during the night shift without millers (lights-out milling). Mills were planned and built with roller mills at a specific length of 10-12 mm/100 kg/24 hours, and double-high roller mills (eight rolls) instead of single-high roller mills (four rolls) were introduced to the diagram of modern flour mills. 14 Fourth Quarter 2008 Response No. 141 MILLING JOURNAL http://www.interstates.com
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