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Principles of Milling

by: Nichole Knopp

Principles of Milling GRSC150

Marketplace > Kansas State University > Science > GRSC150 > Principles of Milling
Nichole Knopp

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About this Document

Chapters 7 through 9 covered
Principles of Milling
Churchill, Frances Maria
Study Guide
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This 2 page Study Guide was uploaded by Nichole Knopp on Monday April 4, 2016. The Study Guide belongs to GRSC150 at Kansas State University taught by Churchill, Frances Maria in Fall 2015. Since its upload, it has received 27 views. For similar materials see Principles of Milling in Science at Kansas State University.


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Date Created: 04/04/16
Study Guide of Ch.7-Ch.9 Pitch: the number of corrugations per inch of roll measured at a right angle to the corrugations In tram: rolls are “in tram” when they are parallel to each other and lie in the same plane. They must be parallel in the horizontal plane as well as the vertical plane. Roll Relief: The taper on the end of reduction rolls which keeps the rolls from contacting each other due to thermal expansion is termed the area of relief. (Grind down the ends so kernels can get through) 2 main types of rolls:  Corrugated roll: used for opening up the wheat kernel and scraping the endo off of the bran  Smooth roll: used for grinding endo into flour, called “reduction rolls” we are reducing the endo particle size Break Release vs Extraction:  Break Release: set up the mill, based on amount of the material based on  particular passage  Break Extraction: milling efficiency, based on amount started with (wheat to 1  break) Sieving: separate material based on the differences in particle size Sieving Motion:  Gyratory- move in a circular motion with the throw equal to the diameter  Reciprocating-move back and forth in a straight line or stroke  Combination- combines gyratory and reciprocating motion  Centrifugal- Cylindrical shaped screen rotates while stock tumbles inside its surface  Vibratory- Reciprocating with a slight vertical component of force Overs vs Thrus:  Overs: large particles that won’t fit through the bolting cloth’s openings traveling over the bolting cloth  Thrus: Small particles that pass through the openings in the bolting cloth Material needed to know about bolting cloth  Material type  Openings per inch  Opening size in microns Rebolt sifters locations:  End of the milling slow before the flour goes to the flour storage bins  Before flour is packed out or loaded out in bulk


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