scholarly journals Reduction of wheat middlings using a conventional and eight-roller milling systems

2009 ◽  
pp. 25-34
Author(s):  
Aleksandar Fistes ◽  
Djuro Vukmirovic
Keyword(s):  
Processing Parameters ◽  
Milling Process ◽  
Ash Content ◽  
Roller Mill ◽  
Flour Milling ◽  
Wheat Middlings ◽  
Flour Yield ◽  
Wheat Flour Milling ◽  
Roller Milling ◽  
Roll Gap

Possibilities for the rationalization of the wheat flour milling process using the eightroller mill on the 1M and 2M passages of the reduction system have been investigated. At the same roll gaps and under the same sieving conditions, the lower flour yield has been obtained using an eight-roller mill compared to the conventional milling system (5-8 %) followed by a higher energy requirements for grinding. By decreasing the roll gap setting and increasing the upper size limit of flour in the process with the eight-roller mill it is possible to increase flour yield and therefore decrease milling energy consumption per unit mass of flour produced without deterioration of flour quality as determined by ash content. With appropriate adjustments of the processing parameters in the eight-roller milling system it is possible to achieve similar milling results to those in the conventional system, while the overall investment, energy and maintenance costs are significantly lower.

scholarly journals Comparative analysis of milling results on the tail-end reduction passages of the wheat flour milling process: Conventional vs. eight-roller milling system

2015 ◽  
Vol 69 (4) ◽  
pp. 395-403
Author(s):  
Aleksandar Fistes
Keyword(s):  
Wheat Flour ◽  
Milling Process ◽  
Ash Content ◽  
Roller Mill ◽  
Flour Milling ◽  
Yield And Quality ◽  
Flour Yield ◽  
Wheat Flour Milling ◽  
Roller Milling ◽  
Roll Gap

Introduction of the eight-roller mill into the wheat flour milling process significantly reduces the investment costs and overall energy requirements compared to the conventional milling system. However, the conditions for controlled milling are less favorable and could result in deterioration of flour yield and quality. Paper compares milling results obtained using a conventional process and process with an eight-roller mill employed on the tail-end passages of the reduction system. At the same roll gap and under the same sieving conditions, the flour release was lower in the process with the eight-roller mill compared to the conventional milling system. By decreasing the roll gap and increasing the upper size limit (granulation) of flour in the process with the eight-roller mill it is possible to increase flour yield and decrease milling energy consumption per unit mass of flour produced. This can be achieved without deterioration of flour quality as determined by ash content.

scholarly journals The function for estimating the separation efficiency of the wheat flour milling process

2012 ◽  
Vol 50 (3) ◽  
pp. 609-614
Author(s):  
Aleksandar Fistes ◽  
Dusan Rakic ◽  
Aleksandar Takaci
Keyword(s):  
Wheat Flour ◽  
Separation Efficiency ◽  
Milling Process ◽  
Flour Milling ◽  
Wheat Flour Milling

Application of Response Surface Methodology for Optimization of Wheat Flour Milling Process

2021 ◽  
Author(s):  
John Kalitsis ◽  
Budiman Minasny ◽  
Ken Quail ◽  
Alexander McBratney
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Wheat Flour ◽  
Milling Process ◽  
Flour Milling ◽  
Wheat Flour Milling

Using the breakage matrix approach for monitoring the break release in the wheat flour milling process

2016 ◽  
Vol 97 (7) ◽  
pp. 2205-2214
Author(s):  
Nemanja Bojanić ◽  
Aleksandar Fišteš ◽  
Dušan Rakić ◽  
Aleksandar Takači ◽  
Tatjana Došenović
Keyword(s):  
Wheat Flour ◽  
Milling Process ◽  
Matrix Approach ◽  
Flour Milling ◽  
Wheat Flour Milling

scholarly journals Control of the size and compositional distributions in a milling process by using a reverse breakage matrix approach

2021 ◽  
pp. 4-4
Author(s):  
Nemanja Bojanic ◽  
Aleksandar Fistes ◽  
Tatjana Dosenovic ◽  
Aleksandar Takaci ◽  
Mirjana Brdar ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Milling Process ◽  
Matrix Approach ◽  
Flour Milling ◽  
Input And Output ◽  
Input Material ◽  
Compositional Distribution ◽  
Wheat Flour Milling

A method based on the reverse breakage matrix approach is proposed for controlling the effects that milling has on the particle size distribution and composition of the comminuted material. Applicability, possibilities, and limitations of the proposed method are tested on examples related to the process of wheat flour milling. It has been shown that the reverse matrix approach can be successfully used for defining the particle size distribution of the input material leading to the desired, predetermined particle size and compositional distribution in the output material. Moreover, we have illustrated that it is possible to simultaneously control both, input and output particle size distribution, together with the composition of the output material.

scholarly journals The Grinding Resistance of the Wheat Grain Related to the Grinding Degree For The First Break In The Wheat Milling

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Cristina DANCIU ◽  
Ioan DANCIU
Keyword(s):  
Milling Process ◽  
Wheat Grain ◽  
Total Energy Consumption ◽  
Work Volume ◽  
Roll Wear ◽  
Large Particles ◽  
Compositional Distribution ◽  
Roller Milling ◽  
Roll Gap ◽  
Milling Equipment

Breakage of wheat grain during first break roller milling depends on the characteristics of the wheat (including the distributions of kernel size, hardness and moisture content) and on the design and operation of the roller mill (including roll speeds and differential, roll disposition, fluting profile, number of flutes, fluting spiral, roll gap, the degree of roll wear and the feed rate). The effects of these factors are manifest in the particle size distribution exiting first break, the compositional distribution of those particles (as large particles tend to be richer in bran, while small particles are pure endosperm), the power required to mill the wheat and the rate of roll wear. For this research, was used a new designed micromill which can perform in the grinding process of the wheat and of the middling too, in the same conditions as in the milling industry. The micromill is used to determine the grinding resistance of the cereals.The method has the same accuracy as the classical one and it has the advantage to be quicker and less demanding as work volume. The assessment of the grinding resistance in the wheat breaking process is related to the settings of the milling equipment which can lead to a diminuate total energy consumption, in the milling process.

255 Evaluation of Different Corn Milling Methods for High-moisture and Dry Corn on Nutrient Digestion

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 124-125
Author(s):  
Caitlin A Coulson ◽  
Nicole Woita ◽  
Tyler Spore ◽  
Hannah Wilson ◽  
Kylie Butterfield ◽  
...  
Keyword(s):  
Dry Matter ◽  
Milling Process ◽  
Nutrient Digestibility ◽  
Hammer Mill ◽  
High Moisture ◽  
Roller Mill ◽  
Nutrient Digestion ◽  
Milling Method ◽  
Feeding Diets ◽  
Effect Of Feeding

Abstract A 2 × 2 factorial digestion study using seven ruminally cannulated steers evaluated the effect of feeding diets containing 70% (dry matter-basis) high-moisture (HMC) or dry corn (DC), processed with either a hammer mill or Automatic Ag Roller Mill (Pender, NE), on nutrient digestion. Feeding HMC decreased the amount of excreted dry matter (DM) and organic matter (OM; P ≤ 0.01) regardless of mill type, but there was a tendency (P ≤ 0.13) for an interaction between corn type and mill type for DM and OM digestibility. There was no difference between either milling treatments fed as HMC (P ≥ 0.69), but the hammer mill DC diet was more digestible than the roller mill DC (P = 0.05). There was no effect on NDF digestibility, but there was a tendency for an interaction between grain type and processing method for ADF digestibility, with the roller mill DC diet having the lowest (P = 0.02) ADF digestibility and no differences (P ≥ 0.15) among the other treatments. As expected, HMC based diets had greater (P < 0.01) starch digestibility compared to DC, but milling method had no effect (P = 0.56). High moisture corn diets had greater (P = 0.01) DE intake (Mcal/kg), and hammer mill DC tended to be greater (P = 0.07) than roller mill DC. There tended (P = 0.07) to be an interaction for minimum pH, with roller mill HMC and hammer mill DC having the lowest average pH, but not different from hammer mill HMC (P ≥ 0.32). There were no differences (P = 0.56) in average pH, but HMC diets had greater variance (P = 0.04) and greater area under pH 5.6 (P = 0.05) compared to DC based diets. Feeding cattle HMC compared to DC increases nutrient digestibility but milling process had little impact.

scholarly journals The essentials of the flour-milling process

1958 ◽  
Vol 17 (1) ◽  
pp. 7-15 ◽  
Author(s):  
C. R. Jones
Keyword(s):  
Milling Process ◽  
Flour Milling

An alternative method for producing wheat-flaxseed flour

2021 ◽  
Vol 30 (4) ◽  
pp. 51-55
Author(s):  
G. N. Pankratov ◽  
◽  
E.P. Meleshkina ◽  
I.S. Vitol ◽  
I.A. Kechkin ◽  
...  
Keyword(s):  
Fat Distribution ◽  
Ash Content ◽  
Grinding Process ◽  
Roller Mill ◽  
Linear Character ◽  
Alternative Method ◽  
Flaxseed Flour ◽  
Confectionery Products ◽  
Flax Seeds ◽  
Flour Color

An alternative method of obtaining wheat-flax flour, based on the use of coarse reduction wheat grits and semolina (from Triticum aestivum) for its subsequent grinding combined with flax seeds, has been developed. This allowed to significantly simplify the grinding process, to eliminate the non-uniform fat distribution among flour grades, which is typical for multi-grade grinding. The technological scheme of a binary grain mixture grinding included one break system and three reduction systems. Break process was performed on a roller mill RSA with an inter-roller gap of 0,05 mm which ensured flour release of at least 50%. Reduction was performed on the reduction part of the facility MLU 202 with a minimal inter-roller gap of 0,01 mm. It was found that the flax seeds introduction into the mixture significantly influenced on all quality indicators, at that the greatest influence was detected at the semolina and flax seeds mixture processing. Statistical analysis enabled to determine a linear character of the dependence of flour color on the yield (R = 0,96–0,99). In comparison to the control the ash content of flour made from a mixture of wheat grits and flax seeds increased by 0,03%, of flour made from semolina and flax seeds mixture – by 0,1%. The fat content of wheat-flax flour (wheat grits + flax seeds) is 3,8%, of wheat-flax flour (semolina + flax seeds) – 3,6%. Flour and bread made from these types of mixtures had high consumer properties that indicates the possibility of its use for obtaining specialized types of bread and production of flour confectionery products.

High Definition Metrology-Based Quality Improvement of Surface Texture in Face Milling of Workpieces with Discontinuous Surfaces

2021 ◽  
pp. 1-38
Author(s):  
Guilong Li ◽  
Shichang Du ◽  
Bo Wang ◽  
Jun Lv ◽  
Yafei Deng
Keyword(s):  
Quality Improvement ◽  
Surface Texture ◽  
Mechanical Performance ◽  
Processing Parameters ◽  
Milling Process ◽  
Face Milling ◽  
Measurement Instruments ◽  
High Definition ◽  
Tool Marks

Abstract In face milling process, the quality of surface texture is vital for mechanical performance of workpieces. The quality of surface texture, especially for waviness, is directly affected by tool marks, a commonly observed phenomenon in face milling. However, appropriate approaches for evaluation and modeling of tool marks are absent to date. Limited to the resolution as well as the efficiency of conventional measurement instruments, the height data of tool marks is hard to be entirely obtained, leading to valuable information omission. Besides, most existing models of tool marks are established for general workpieces with regular geometry and continuous surfaces. Since the cutter-workpiece engagement mode has a significant impact on the generation of tool marks, current models could be inaccurate or invalid when dealing with workpieces with discontinuous surfaces. To overcome this shortage, a novel approach is proposed in this paper, aimed at quality improvement of surface texture in face milling of workpieces with discontinuous surfaces. Firstly, the evaluation indexes for tool marks are defined based on the recently developed high definition metrology (HDM). Secondly, the physical modeling of tool marks is presented, taking the face milling mechanism into account. Thirdly, the physical-informed optimization model is developed to search for the optimal processing parameters for surface quality improvement. At last, the effectiveness of the proposed approach is verified by a face milling experiment on the engine blocks.

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