Flow property measurement of food powders and sensitivity of Jenike’s hopper design methodology to the measured values

Fitzpatrick, John J.; Barringer, Sheryl A.; Iqbal, Tarıq

doi:10.1016/s0260-8774(03)00147-x

Cited by 290 publications

(228 citation statements)

References 3 publications

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“…Even a minor change of particles can lead to significant changes of flours mobility. A decrease of the particles size leads to the reduction of the flowability of certain flour [4][5]. The smaller the size of particles and the larger the range of particles size distribution, the higher the adhesive power and the lower the flowability are [1,6].…”

Section: Introductionmentioning

confidence: 99%

Flowability and durability of cement containing technological additives during grinding process

Shahova¹,

Chernositova

Denisova³

2017

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" 2017 (AIME 2017)

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Abstract-This paper considers the major factors influencing cement flowability and its conservation in humid environment with the presence of processing additives during grinding. It describes cement flowability quantitative measurement methods developed and introduced by the authors and implemented on the basis of several cement plants of Russia. The influence of storage conditions on altering cement flowability in humid environments, which simulate absorption of significant moisture quantity in the accelerated mode, was studied. The influence of grinding intensifiers on cement flour rheological characteristics and their conservation under the conditions of storing cement in humid environments was studied as well. The correlation regression analysis of the impact of physical and chemical characteristics of the samples of cement on its flowability was performed. As follows from the analysis, cement flowability has weak correlation dependence on studying variables, which indicates it being influenced by a variable factor not quantitatively measured yet.

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Section: Introductionmentioning

confidence: 99%

Flowability and durability of cement containing technological additives during grinding process

Shahova¹,

Chernositova

Denisova³

2017

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" 2017 (AIME 2017)

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“…The complexity surrounding hopper design is mostly due to the mass flow ability, which depends principally on the mechanical behaviour of the stored material, semi-included angle, flow factor and the critical applied stress [1], [2]. Designing and troubleshooting mass flow hoppers require the measurement of powder flow [3], [4].…”

Section: Introductionmentioning

confidence: 99%

“…He also applied measured property data to twodimensional stress analysis to develop charts and a mathematical model for determining the minimum hopper angle and hopper exit opening size for material flow from conical and wedge-shaped hoppers. The geometrical characteristics of the hopper affect the rate of flow of the material out of the hopper [4], [10], [11], [12]. Jenike and Johanson [13] explained the various ways that grains might move during emptying, and the flow patterns that are developed.…”

Section: Introductionmentioning

confidence: 99%

Conical Hopper Design Parameters for Selected Food Powders using MS Excel Add-in

Oko¹,

Diemuodeke²,

Edet³

2015

IJCA

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This paper presents the design parameters for conical hopper, using MS Excel Add-in for hopper design, in the popular range of the wall friction angles for ten food powders in common use, and also correlates these parameters with the physical/flow properties of the powders. The design parameters are the opening diameter, critical applied stress, semi-included angle and the flow factor. The physical properties and direct shear test data of the ten food powders served as input parameters for computer based procedure developed for hopper design. The numerical results and correlations obtained are shown to be sufficiently accurate for engineering practice. They will enhance the efficient design of conical hoppers for these food powders.

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“…Two basic patterns of the flow in silos can be distinguished: mass flow and funnel flow (KNOWLTON et al 1994;FITZPATRICK et al 2003;JENIKE 1964;SCHWEDES 1996). During mass flow all the powder is in motion and moving downward towards the discharge opening while for funnel flow powder discharge through a flow channel formed within the grain bulk and no sliding along the wall is present.…”

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confidence: 99%

“…It was suggested by many researchers that physical properties have strong influence on flow properties of powders (JOHANSON 2000). FITZPATRICK et al (2003) determined flow properties of 13 food powders of various particle sizes, moisture contents, bulk densities and particle densities using annular shear cell. Based on results obtained materials were classified in groups from easy flowing to very cohesive.…”

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confidence: 99%

Direct shear testing of flowability of food powders

Stasiak¹,

Molenda²

2004

Res. Agric. Eng.

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ABSTRACT:The flow properties were determined for two groups of food powders used in industry: cereal powders and non-starch powders. Materials were different in mean sizes of particles d* ranging from 0.033 mm for potato flour to 4.449 mm for oatmeal. Experiments were performed in 60 mm in diameter direct shear tester (Jenike shear tester) for four values of consolidating stress σ r : 30, 60, 80 and 100 kPa. The highest values of flow function (FF) and the widest range of its variability (ranging from 0.5 kPa to 35 kPa) were found in the case of pearl barley groats. For the non-starch powders values of FF were more stable and did not exceed a limit characteristic for easy flowing materials. The highest values of FF in the group of the non-starch materials were obtained for icing sugar (from 19 kPa to 24 kPa) while the lowest found were values of FF for salt (from 3 kPa to 7 kPa). Powdered milk and potato flour showed the widest variability of FF values within the non-starch materials.

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Flow property measurement of food powders and sensitivity of Jenike’s hopper design methodology to the measured values

Cited by 290 publications

References 3 publications

Flowability and durability of cement containing technological additives during grinding process

Flowability and durability of cement containing technological additives during grinding process

Conical Hopper Design Parameters for Selected Food Powders using MS Excel Add-in

Direct shear testing of flowability of food powders

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