Farm Grain Comminution: Hammer Mill and Burr Mill Performance Analyzed

Hansen, Sarah

doi:10.13031/2013.39422

Cited by 3 publications

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Variability associated with testing corn for aflatoxin

Whitaker

Dickens

Monroe

1979

J Americ Oil Chem Soc

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The sampling, subsampling (both coarse and fine ground meal), and analytical variances associated with testing shelled corn for aflatoxin were estimated by the use of 500 g samples, 50 g subsamples, and the CB method of analysis. The magnitudes of the variance components increased with an increase in the aflatoxin concentration. Functional relationships were developed to predict the variance for a given aflatoxin concentration and any size sample, subsample, and number of analyses. At 20 ppb total aflatoxin, the coefficient of variantion associated with a 4.54 kg sample, 1 kg subsample of coarsely ground meal (passes a #14 screen), a 50 g subsample of finely ground meal (passes a #20 screen) and one analysis were 21, 8, 11, and 26%, respectively.

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Variability associated with testing corn for aflatoxin

Whitaker

Dickens

Monroe

1979

J Americ Oil Chem Soc

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A comparative study of stone plate burr mill and steel plate burr mill in wheat grinding

Islam¹,

Matzen

1994

Powder Technology

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Grinding Characteristics of Wheat in Industrial Mills

Voicu¹,

Biriș²,

Stefan³

et al. 2013

Food Industry

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Grinding of cereal seeds is due to the mechanical action of several forces: compression, shearing, crushing, cutting, friction and collision, to which seeds are subjected, depending on the design if the mill used for grinding (roller mill, hammer mill, stones mill or ball mill). By applying these forces, when the mechanical resistance of the particles is exceeded, their division happens in a number of smaller particles of different sizes, geometric shapes, masses and volumes. An industrial wheat mill has several technological phases, starting with coarse grinding of seeds to fine grinding of the resulted milling products, after their sorting in fractions of different sizes. The first technological phase of grinding process, in wheat mills, is gristing or coarse grinding phase, which also consists of several technological passages. A technological passage consists of a grinding machine (roller mill), a machine for sifting and sorting of the resulted milling fractions (plansifter compartment) and, eventually, a machine for the conditioning of semifinal product (semolina machine or bran finisher). In a technological passage, intermediate fractions are obtained, which, by a new grinding, lead to the obtaining of high-quality flour at milling passages (fine grinding). Wheat processing requires a long and gradual transformation into flour. This process takes place after a gradual crushing schedule, from fine to finer, from machine to machine, of wheat seed, respectively of the crushed particles resulting from it. Each grinding operation is immediately followed by a sorting operation by sifting (fig.1) because during grinding, a wide variety of grinded seed particles is obtained.

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Farm Grain Comminution: Hammer Mill and Burr Mill Performance Analyzed

Cited by 3 publications

References 0 publications

Variability associated with testing corn for aflatoxin

Variability associated with testing corn for aflatoxin

A comparative study of stone plate burr mill and steel plate burr mill in wheat grinding

Grinding Characteristics of Wheat in Industrial Mills

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