Scale-up effect on size-segregation of sugar during flow

C. A. Markley, Virendra Puri

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The size-segregation pattern was determined for two nearly binary mixtures (particle size ratios 2:1 and 5.7:1) of equal mass (1:1) granulated sugar under funnel flow and mass flow conditions from two bin sizes (small and large). The binary mixtures were deposited in the bins using the sprinkle-fill method to have a homogeneous initial fill. For funnel flow conditions, a distinctly fines-predominant flow stream was observed during initial discharge and a coarse-predominant flow stream was observed during the remainder of the discharge. Mixtures from the mass flow bins tended to remain and fluctuate about the ideal mass ratio of one. The mass ratio is defined as the mass of fines divided by the mass of coarse particles in the sample. Statistical analysis (0.05 level of significance) confirmed that an increase in segregation occurs during funnel flow-type compared to mass flow-type. As bin size increased, segregation appeared to decrease for both particle size ratios. The greatest segregation ratio of normalized fines to coarse ratio was observed for 5.7:1 particle size ratio during funnel flow in the small bin where the range was 0.39. The least segregation was seen in the large bin for 2:1 particle size ratio under mass flow conditions, where the range was 0.02.

Original languageEnglish (US)
Pages (from-to)1469-1476
Number of pages8
JournalTransactions of the American Society of Agricultural Engineers
Volume41
Issue number5
StatePublished - Sep 1998

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Bins
Particle Size
Sugars
mass flow
sugar
particle size
sugars
Particle size
stream flow
Binary mixtures
streamflow
fill
statistical analysis
effect
Statistical methods
sampling

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

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title = "Scale-up effect on size-segregation of sugar during flow",
abstract = "The size-segregation pattern was determined for two nearly binary mixtures (particle size ratios 2:1 and 5.7:1) of equal mass (1:1) granulated sugar under funnel flow and mass flow conditions from two bin sizes (small and large). The binary mixtures were deposited in the bins using the sprinkle-fill method to have a homogeneous initial fill. For funnel flow conditions, a distinctly fines-predominant flow stream was observed during initial discharge and a coarse-predominant flow stream was observed during the remainder of the discharge. Mixtures from the mass flow bins tended to remain and fluctuate about the ideal mass ratio of one. The mass ratio is defined as the mass of fines divided by the mass of coarse particles in the sample. Statistical analysis (0.05 level of significance) confirmed that an increase in segregation occurs during funnel flow-type compared to mass flow-type. As bin size increased, segregation appeared to decrease for both particle size ratios. The greatest segregation ratio of normalized fines to coarse ratio was observed for 5.7:1 particle size ratio during funnel flow in the small bin where the range was 0.39. The least segregation was seen in the large bin for 2:1 particle size ratio under mass flow conditions, where the range was 0.02.",
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Scale-up effect on size-segregation of sugar during flow. / Markley, C. A.; Puri, Virendra.

In: Transactions of the American Society of Agricultural Engineers, Vol. 41, No. 5, 09.1998, p. 1469-1476.

Research output: Contribution to journalArticle

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AU - Markley, C. A.

AU - Puri, Virendra

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AB - The size-segregation pattern was determined for two nearly binary mixtures (particle size ratios 2:1 and 5.7:1) of equal mass (1:1) granulated sugar under funnel flow and mass flow conditions from two bin sizes (small and large). The binary mixtures were deposited in the bins using the sprinkle-fill method to have a homogeneous initial fill. For funnel flow conditions, a distinctly fines-predominant flow stream was observed during initial discharge and a coarse-predominant flow stream was observed during the remainder of the discharge. Mixtures from the mass flow bins tended to remain and fluctuate about the ideal mass ratio of one. The mass ratio is defined as the mass of fines divided by the mass of coarse particles in the sample. Statistical analysis (0.05 level of significance) confirmed that an increase in segregation occurs during funnel flow-type compared to mass flow-type. As bin size increased, segregation appeared to decrease for both particle size ratios. The greatest segregation ratio of normalized fines to coarse ratio was observed for 5.7:1 particle size ratio during funnel flow in the small bin where the range was 0.39. The least segregation was seen in the large bin for 2:1 particle size ratio under mass flow conditions, where the range was 0.02.

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