Effect of conditioners on the flow properties of powdered sucrose

Peleg, Micha; Mannheim, C. H.

doi:10.1016/0032-5910(73)80007-5

Cited by 74 publications

(41 citation statements)

References 2 publications

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“…Higher surface area increases number of contact points for chemical reactions [7], which may require grinding to a nominal particle size of about 1 mm. Peleg and Mannheim [8] found that the particle size affects the material binding properties. The smaller particles have more contact area, which causes a greater bond energy per mass unit, regardless of their physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

The Characteristics of Shredded Straw and Hay Biomass: Part 2—The Finest Particles

Lisowski

Kostrubiec

Dąbrowska

et al. 2016

Waste Biomass Valor

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The aim of this study was to determine the characteristics of fine shredded pan fraction of biomass from sieve analyzer of oscillatory motion and as significance it was comparison the geometric mean particle size calculated according to the S319.4 standard with the arithmetic mean particle size that is assumed as half size of the last sieve 1.65 mm, according to the S424.1 standard. It was found that the finest particles size distributions are less varied between types of biomass (straw, hay and their mix) and are more aligned than particle size distributions for whole mixtures. The particles of hay were more uniform and belonged to ''well sorted'' category than particles of straw and mix, which were non-uniform and belonged to ''moderately well sorted'' category. All biomass particles size belonged to ''very well sorted'' category and particle size distribution were ''very fine skewed'' and ''mesokurtic''. The geometric mean of the finest fraction particle size is almost by half smaller than the value resulting from the half value of the last sieve hole size (1.65 mm) of sieve separator with oscillatory motion in the horizontal plane, as these values are 0.45 and 0.82 mm, respectively. Assuming the 0.1 mm for a pan and the last sieve size of 1.65 mm we suggest to calculate the geometric mean (0.41 mm), which is closer to the experimental value. Application of this recommendation to the standard requires further comparative studies.

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Section: Introductionmentioning

confidence: 99%

The Characteristics of Shredded Straw and Hay Biomass: Part 2—The Finest Particles

Lisowski

Kostrubiec

Dąbrowska

et al. 2016

Waste Biomass Valor

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“…It is practically well known that a small amount of additives could improve the flowability of powders. Such an additive is called glidant and often incorporated into various cohesive powders (Peleg and Mannheim, 1973;York, 1975;Jonat et al, 2004;Meyer and Zimmermann, 2004;Zimmermann et al, 2004). However, the mechanism of the function of glidant is not yet clear.…”

Section: Introductionmentioning

confidence: 99%

“…However, the mechanism of the function of glidant is not yet clear. The following factors have been suggested for the flowability improvement: (a) change in the surface properties, (b) alteration in particle arrangement, (c) reduction of interaction forces between particles, (d) enhancement in electrostatic discharge (Peleg and Mannheim, 1973;York, 1975;Yokoyama, 1997). Also, it has been pointed out that composite particles formed by a mechanical treatment show higher flowability (Yokoyama, 1997;Pfeffer, et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Flowability of Composite Particles and Powder Mixtures by a Vibrating Capillary Method

Jiang

Matsusaka

Masuda

et al. 2006

J. Chem. Eng. Japan

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Flowability of micrometer-sized particles treated with nanometer-sized particles has been studied by a vibrating capillary method. Two different types of treatments, i.e. dry particle coating based on the mechanofusion and simple mixing through shaking manually, were adopted to prepare composite particles and powder mixtures, respectively. The micrometer-sized core particle was polymethylmethacrylate (PMMA), and the coating nano-particles were TiO 2 , Al 2 O 3 , or SiO 2 . Surface morphology of the treated particles was * To whom correspondence should be addressed. E-mail: matsu@cheme.kyoto-u.ac.jp 2 analyzed by digital processing of SEM photographs, and flow behavior of powders in the vibrating capillary tube was studied with particular attention to the effects of the kind of nano-particles, its concentration, and the treatment method. Two factors were introduced to evaluate the flowability; one is the critical amplitude of vibration making the powder flow, and the other is the mass flow rate as a function of the vibration amplitude. The experimental results show that the mechanofusion treatment gave a remarkable improvement in the powder flowability evaluated by the two factors mentioned above. The general tendency of the improvement can be explained by the projected-area ratio defined as the ratio of the total projected-area of nano-particles adhering to core-particle surface and the projected-area of the core-particle itself.

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“…The tapped density of VCO cake flour, however, followed an increasing trend with moisture, whereas there was no definite tapped density trend for coconut milk residue flour. Formation of an open-bed structure supported by inter-particle forces might have resulted in decreased bulk density of both flours with increased moisture (Fitzpatrick et al, 2004;Peleg and Mannhei, 1973). Bulk density and tapped density of VCO cake flour was greater than for coconut milk residue flour.…”

Section: Resultsmentioning

confidence: 97%

Flow-specific physical properties of coconut flours

Manikantan¹,

Ambrose²,

Alavi³

2015

International Agrophysics

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A b s t r a c t. Coconut milk residue and virgin coconut oil cake are important co-products of virgin coconut oil that are used in the animal feed industry. Flour from these products has a number of potential human health benefits and can be used in different food formulations. The objective of this study was to find out the flow-specific physical properties of coconut flours at three moisture levels. Coconut milk residue flour with 4.53 to 8.18% moisture content (w.b.) had bulk density and tapped density of 317.37 to 312.65 and 371.44 to 377.23 kg m -3 , respectively; the corresponding values for virgin coconut oil cake flour with 3.85 to 7.98% moisture content (wet basis) were 611.22 to 608.68 and 663.55 to 672.93 kg m -3 , respectively. The compressibility index and Hausner ratio increased with moisture. The angle of repose increased with moisture and ranged from 34.12 to 36.20 and 21.07 to 23.82 o for coconut milk residue flour and virgin coconut oil cake flour, respectively. The coefficient of static and rolling friction increased with moisture for all test surfaces, with the plywood offering more resistance to flow than other test surfaces.

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Effect of conditioners on the flow properties of powdered sucrose

Cited by 74 publications

References 2 publications

The Characteristics of Shredded Straw and Hay Biomass: Part 2—The Finest Particles

The Characteristics of Shredded Straw and Hay Biomass: Part 2—The Finest Particles

Evaluation of Flowability of Composite Particles and Powder Mixtures by a Vibrating Capillary Method

Flow-specific physical properties of coconut flours

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