Milling Journal - Q1 2008 - (Page 20)

Designing a Purifierless Millflow Miller explains how to achieve low-ash-content flour without using purifiers. Technical Manager Rami Flamer has been milling at the “Shalom” Flour Mill in Petach Tikva, Israel since 1982. In this article, he discusses the advantages of designing a millflow that does system are reduced to flour, which has a lower ash content than stocks that are not cleaned before entering the reduction system. The purifier effectively rePurifiers have two purposes moves the fine fragments of in the flour mill. bran, which would otherwise 1. To purify stocks that are be ground into the flour in the going from the break system into Rami Flamer reduction system. A low ash the reduction system. The goal content becomes especially important is to separate the endosperm from the fine when producing a patent flour. branny fragments that come with graded Four separations. When incoming middling stocks. stocks pass through the purifier, they are 2. To purify products like coarse and separated into four parts. fine semolina. 1. Pure endosperm, which is sent to The purified stocks in the reduction not utilize purifiers. The following article was submitted by Flamer and edited by Milling Journal. the reduction system to become flour. 2. Composite particles with both endosperm and bran. These composite particles are broken down further by 2nd sizings and purified again. 3. Poor-quality particles, which are sent to the appropriate section of the break system or straight to millfeed. 4. Fine bran particles, which are removed via the purifier’s air system and sent to the dust collector. A purifier’s reciprocating action and upward air flow work in unison to make these separations. The lightest particles pass out of the machine and onto the dust collector, while the heavier particles are sized with the purifier’s sieve sections. Older mills often used five to six twin (side-by-side) purifiers in the millflow. The purifiers were often double-deck machines. Modern mills will often use two to three twin purifiers, which are triple-deck ma- 20 First Quarter 2008 Response No. 201 MILLING JOURNAL http://www.interstates.com http://www.interstates.com

Table of Contents Feed for the Digital Edition of Milling Journal - Q1 2008

Milling Journal - First Quarter 2008 Contents First Break Examining Fortification Standards IAOM 2008 Milling Short Courses 2008 IAOM Conference and Expo Melinda Farris Interview Designing a Purifierless Millflow Dirk Maier Named KSU Dept. Head NAMA’s 2008 Division Meetings Protecting Electrical Workers Miller Profiles Todd Bastean Interview Safety: How Serious Are We? Product Quality/Gwirtz Product Roundup: Magnets Pest Management/Subramanyam Explosion Protection Supplier Interview: Darin Stutler Product Reviews New IAOM Safety Award Criteria Don’t Forget OSHA Form 300A Milling Notes Great Lakes Regional Conference 4th Quarter 2007 Flour Production IAOM Reference Guide Hammermills Brushes Aspirators Level Indicators Product Reviews Magnets Mixers Packaging Purifiers Safety Equipment Screeners Separators Sifter Accessories Ad Index

Milling Journal - Q1 2008

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