scholarly journals On Predicting Roller Milling Performance IV: Effect of Roll Disposition on the Particle Size Distribution from First Break Milling of Wheat

2003 ◽  
Vol 37 (1) ◽  
pp. 21-29 ◽  
Author(s):  
Chaoying Fang ◽  
Grant M. Campbell
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Milling Performance ◽  
Roller Milling

scholarly journals Stone Milling versus Roller Milling in Soft Wheat: Influence on Products Composition

Foods ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 3 ◽  
Author(s):  
Marina Carcea ◽  
Valeria Turfani ◽  
Valentina Narducci ◽  
Sahara Melloni ◽  
Vincenzo Galli ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Quality Parameters ◽  
Soft Wheat ◽  
Disk Mill ◽  
Technological Quality ◽  
Roller Milling ◽  
Wheat Flours

Wholegrain wheat flours are in great demand from consumers worldwide because they are considered healthier then refined flours. They can be obtained by either stone milling, which is experiencing a revival in Europe, or roller milling. In order to study compositional differences due to the milling technology and to explore the possibility of a better qualification of wholegrain flours by means of nutritionally oriented quality parameters, eight mixes of soft wheat grains were stone milled and roller milled and the milling products were analyzed for their protein, ash, lipids, total dietary fibre, total polyphenols and alkylresorcinols content. A wholegrain flour milled with a laboratory disk mill was used as a comparison and a set of seven wholegrain flours purchased on themarket were also analyzed and compared. The particle size distribution of stone milled and recombined roller milled flour was also studied. Considering the above mentioned parameters, we found that there is no compositional difference between a stone milled or a roller milled flour if, in this latter one, the milling streams are all recombined, but the particle size distribution was different. This might have an impact on the technological quality of flours and on the bioavailability of components.

scholarly journals Prediction of Breakage During Roller Milling of Wheat Kernels, Based on Single Kernel Measurements

2012 ◽  
Author(s):  
Ida Idayu Muhamad ◽  
Chaoying Fang ◽  
Grant M. Campbell
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Independent Data ◽  
Flour Milling ◽  
Starting Point ◽  
Breakage Function ◽  
Efficient Recovery ◽  
Roller Milling ◽  
Wheat Kernels

Pengilangan tepung gandum melibatkan pengisaran bijirin secara berulang-kali (menggunakan roller mill) dan pemisahan (secara pengayakan) bagi perolehan semula hasilan tepung yang berkesan yang secara bandingannya bersih dari pencemaran bran. Satu permulaan bagi membina model perlakuan terhadap campuran bijirin gandum ialah keupayaan bagi menentu-ukur kelainan ciri-ciri yang wujud dalam campuran tersebut. Alatan Perten Single Kernel Characterisation System (SKCS) dapat memberikan taburan kuantitatif bagi jisim, kandungan lembapan, garis pusat dan nilai kekerasan bagi campuran bijirin tersebut, berdasarkan pengukuran 300 kernel dalam masa 5 minit. Cabarannya ialah menghubungkaitkan taburan yang telah ditentukur kepada ramalan keupayaan pengilangan. Pada tahap ini, satu bentuk kefungsian pengisaran (breakage function) dalam konteks parameter tentu-ukuran bagi setiap kernel bijirin telah diterbitkan, dan diintegrasi kepada taburan sifat kernel menggunakan persamaan proses pengisaran (breakage equation). Dengan menggunakan model tersebut, satu jangkaan boleh dilakukan ke atas taburan saiz partikel hasil keluaran pengisaran siri pertama atau First Break roller milling bagi kernel bijirin yang berbeza saiz, kekerasan dan kelainannya, berdasarkan hanya pada ciri-ciri taburan yang diberikan oleh SKCS. Model tersebut telah diuji ke atas hasil keluaran pengisaran pada disposisi (roll disposition) pengisaran sharp-to-sharp dan dull-to-dull, dan didapati menunjukkan keseragaman dengan data bebas (independent data). Kata kunci: Tingkah laku pengisaran, taburan saiz partikel, pemecahan, pengujian satu–kernel, bijirin Wheat flour milling involves repeated breakage (by roller milling) and separation (by sifting) of flour particles to give efficient recovery of fine flour relatively free from bran contamination. A starting point for modelling the behaviour of mixtures of wheat kernels is to be able to measure the variation in kernel properties within the mixture. The Perten Single Kernel Characterisation System (SKCS) gives the distributions of kernel mass, moisture content, diameter and hardness within a mixture, from 300 kernels within 5 minutes. A challenge remains to relate these measured distributions to predictions of milling performance. To this end, a breakage function in terms of these measured parameters for individual kernels has been constructed, and integrated over the distribution of kernel properties using the breakage equation. These models allow prediction of the output particle size distribution delivered by First Break roller milling of kernels varying in size, hardness and variety, based entirely on SKCS characteristics. Predictions have been developed for both sharp-to-sharp and dull-to-dull roll dispositions, and show encouraging agreement with independent data. Key words: Milling behaviour, particle size distribution, breakage, single kernel testing, wheat

Effects of Particle Size Distribution on Corrosion Rate of Carbon Steel in Soil

2020 ◽  
Vol 69 (4) ◽  
pp. 102-106
Author(s):  
Shota Ohki ◽  
Shingo Mineta ◽  
Mamoru Mizunuma ◽  
Soichi Oka ◽  
Masayuki Tsuda
Keyword(s):  
Particle Size ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Particle Size Distribution ◽  
Size Distribution

DENSE SPRAY CORRECTIONS FOR DIFFRACTION-BASED PARTICLE SIZE DISTRIBUTION MEASUREMENTS

1995 ◽  
Vol 5 (1) ◽  
pp. 75-87 ◽  
Author(s):  
Christine M. Woodall ◽  
James E. Peters ◽  
Richard O. Buckius
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution

Influence of Cementite Particle Size Distribution on Machinability and Tool Life of High Carbon Cr-bearing Steels

1998 ◽  
Vol 84 (5) ◽  
pp. 387-392 ◽  
Author(s):  
Takashi INOUE ◽  
Yuzo HOSOI ◽  
Koe NAKAJIMA ◽  
Hiroyuki TAKENAKA ◽  
Tomonori HANYUDA
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Tool Life ◽  
Cementite Particle ◽  
High Carbon ◽  
Bearing Steels
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