Investigation on compression and mildew of mixed and separated maize

Liu, Chaosai; Chen, Guixiang; Zhou, Yang; Yue, Longfei; Liu, Wenlei

doi:10.1002/fsn3.2985

Cited by 3 publications

(3 citation statements)

References 34 publications

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“…And Fan et al 2 revealed that there were three distribution forms of particles in this process, i.e. alternating state distribution, segregated state distribution and mixed state distribution, and we further discussed the in uence of three segregation states on compression and fungal heat production in previous reports 13 .…”

Section: Introductionmentioning

confidence: 53%

Segregation of particles during maize loading process in a center-loaded silo

Chen,

Liu,

Zheng

et al. 2024

Preprint

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Kernel breakage and segregation are an unavoidable phenomenon during maize loading process in the silo, and the study of this phenomenon is beneficial for solving the aeration, drying and insect control in grain storage. Distribution and segregation of broken kernels, dust, and fragments (BKDF), inorganic impurities, foreign kernels and other organic impurities were studied by maize loading process in a center-loaded silo. Maize was loaded through a vertical funnel into the silo from four drop heights (0.3, 1, 2 and 3.1 m). Samples were collected using a sampling tube inserted vertically at a Y-shaped locations along three radii of the silo for each drop heights. The difference in porosity distribution in the spatial position of the maize bulk caused by kernel breakage and segregation was determined. Higher drop heights increased the content of BKDF, and the BKDF decreased nonlinearly with the increase of distance from the center of the silo. The foreign kernels concentration near the center of the silo was higher than that near the silo wall. Inorganic impurities mainly accumulated in the 1/4 ~ 3/4 radius, while other organic impurities accumulated mostly near the wall of the silo. A nonlinear model considering kernel breakage and segregation was developed to predict the porosity distribution in the vertical and radial direction in the silo. Kernel breakage and segregation minimize the porosity at the center of the silo. The porosity of the silo center was 0.421 ~ 0.438, and it increased with the distance from the center of the silo increased.

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Section: Introductionmentioning

confidence: 53%

Segregation of particles during maize loading process in a center-loaded silo

Chen,

Liu,

Zheng

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similarly, the decrease of porosity will lead to the change of grain bulk density [150], In turn, it will cause changes in the pressure distribution at the bottom of the grain pile, and increase the stress value of corn grains at the bottom [151], the possibility of crushing grains at the bottom will also increase. In storage, the change of grain storage environment is affected by temperature, humidity, self pressure and other factors [11,12].…”

Section: Corn Breakage Harm Changing the Stacking Characteristicsmentioning

confidence: 99%

“…Breakage of corn kernels can cause difficulties in post-harvest production and storage. Complex segregation mechanisms such as sieving and impact separation after corn entry into the silo cause uneven mixing, stratification and segregation of intact and broken corn kernels in the form of distribution, resulting in uneven porosity distribution within the grain pile, which is exacerbated by uneven settlement caused by the self-weight of the grain [11,12], which ultimately leads to uneven distribution of the airflow resistance within the silo, and over drying of the low concentration pile and over wetting of the high concentration pile, which in turn induce the propagation of insects and molds. Breaking also changes the physicochemical properties of corn…”

Section: Introductionmentioning

confidence: 99%

Factors, Harms, and Control of Corn Kernel Breakage: A Review

GuiXiang,

YaHao,

ChaoSai

et al. 2023

Ann Food Process Preserv

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Corn kernel breakage is an important cause of corn losses. Beginning at harvest, corn kernels are broken by collisions with farm machinery and equipment, drying induces increased kernel breakage susceptibility, and equipment transfers and grain loading generate collisions between corn kernels and with equipment, increasing the amount of broken kernels. Meanwhile, broken kernels increase the risk of insect damage, mold and mildew, as well as aggravate segregation during warehousing, which is detrimental to the safety and quality of corn storage. The causes of corn kernel breakage from harvest to storage are summarized, the water content is a key factor in the post-production quality and quantity of corn, the research results on kernel breakage in recent years are summarized, and suggestions are made for the research related to the reduction of corn kernel breakage rate.

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Study of the pore structure characteristics of soybean grain piles using image processing technology

Ge,

Chen,

Liu

et al. 2023

Int. Agrophys.

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Pore structure is an important factor affecting the airflow distribution in a grain pile, and hence the variation in its structural parameters under different vertical pressures should be studied further. In this study, grain slice imaging and image processing technologies were comprehensively used to study the changes in the number, size, and shape of the pores in soybean grain piles under vertical pressures of 0, 50, 100, 150, 200, 250, and 300 kPa, and to explore the effects of vertical pressure on the porosity, pore volume, pore diameter, and pore fractal dimension of the grain piles. The results show that the porosity of the grain pile decreased with an increase in the vertical pressure, and the change rate of grain pile porosity was 28% when the vertical pressure was 0-300 kPa. When the vertical pressure increased from 50 to 300 kPa, the grain pile porosity variation increased from 6.49 to 24.33% as compared with the natural state (0 kPa). The pore area and diameter of the grain pile gradually decreased with the increase in vertical pressure. The distribution of the grain pile pore area along the horizontal direction from the side wall to centre showed great differences under different vertical pressures. With an increase in vertical pressure, the proportion of the pore diameter of < 2.5 mm increased, whereas the proportion of the pore diameter of > 2.5 mm decreased. An increase in the vertical pressure will lead to an increase in the grain pile pore fractal dimension. When the vertical pressure was 0-300 kPa, the change rate of the grain pile pore fractal dimension was 10%. The relevant research methods and conclusions drawn in this study may be used to provide theoretical support and a reference source for the airflow distribution and resistance changes in the bulk grain piles.K e y w o r d s: soybean grain pile, vertical pressure, pore structure, image processing technology

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Investigation on compression and mildew of mixed and separated maize

Cited by 3 publications

References 34 publications

Segregation of particles during maize loading process in a center-loaded silo

Segregation of particles during maize loading process in a center-loaded silo

Factors, Harms, and Control of Corn Kernel Breakage: A Review

Study of the pore structure characteristics of soybean grain piles using image processing technology

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