Percolation segregation of binary mixtures under periodic movement

Anjani K. Jha, Virendra Puri

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Three strain rates of 1.0, 0.5, and 0.25 Hz were selected for studying percolation segregation in binary mixtures of urea (spherical) and potash (angular). Mixed binary samples prepared from three mean coarse sizes with their corresponding three and two fines sizes for potash and urea, respectively. Herein, three coarse mean sizes 3675, 3075, and 2580 μm and three mean fine sizes 2180, 1850, and 1550 μm were selected for tests. Percolation segregation in mixed binary sample was quantified using the primary segregation shear cell (PSSC-II). Based on experimental results, the segregated fines mass, normalized segregation rate (NSR) and segregation rate of fines for binary mixtures increased with increasing strain rate from 0.25 Hz to 1.0 Hz. The NSR decreased with decreasing strain rate from 1.0 Hz > 0.5 Hz > 0.25 Hz for size ratios 1.7, 2.0, and 2.4 (p < 0.05). At these three strain rates, for size ratio 2.0, the NSR of coarse size 3675 μm with fines size 1850 μm was smaller than the NSR of coarse size 3075 μm with fine size 1550 μm in the binary mixtures (p < 0.05). At three strain rates of 1.0, 0.5, and 0.25 Hz, the NSR for potash was higher (53%, 56%, and 46%) than the NSR for urea for the same size ratio (p < 0.05).

Original languageEnglish (US)
Pages (from-to)73-82
Number of pages10
JournalPowder Technology
Volume195
Issue number2
DOIs
StatePublished - Oct 25 2009

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Binary mixtures
Strain rate
Potash
Urea
potash

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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title = "Percolation segregation of binary mixtures under periodic movement",
abstract = "Three strain rates of 1.0, 0.5, and 0.25 Hz were selected for studying percolation segregation in binary mixtures of urea (spherical) and potash (angular). Mixed binary samples prepared from three mean coarse sizes with their corresponding three and two fines sizes for potash and urea, respectively. Herein, three coarse mean sizes 3675, 3075, and 2580 μm and three mean fine sizes 2180, 1850, and 1550 μm were selected for tests. Percolation segregation in mixed binary sample was quantified using the primary segregation shear cell (PSSC-II). Based on experimental results, the segregated fines mass, normalized segregation rate (NSR) and segregation rate of fines for binary mixtures increased with increasing strain rate from 0.25 Hz to 1.0 Hz. The NSR decreased with decreasing strain rate from 1.0 Hz > 0.5 Hz > 0.25 Hz for size ratios 1.7, 2.0, and 2.4 (p < 0.05). At these three strain rates, for size ratio 2.0, the NSR of coarse size 3675 μm with fines size 1850 μm was smaller than the NSR of coarse size 3075 μm with fine size 1550 μm in the binary mixtures (p < 0.05). At three strain rates of 1.0, 0.5, and 0.25 Hz, the NSR for potash was higher (53{\%}, 56{\%}, and 46{\%}) than the NSR for urea for the same size ratio (p < 0.05).",
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Percolation segregation of binary mixtures under periodic movement. / Jha, Anjani K.; Puri, Virendra.

In: Powder Technology, Vol. 195, No. 2, 25.10.2009, p. 73-82.

Research output: Contribution to journalArticle

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