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Journal ArticleDOI

Studies on solids mixing in a double-cone blender

01 Jan 1972-Powder Technology (Elsevier)-Vol. 5, Iss: 2, pp 115-118
TL;DR: In this article, the mixing of free-flowing sand particles of larger size (−0.422+0.595 mm) with non-free-fluctuating salt particles of smaller size (0.252+ 0.353 mm) has been studied in an experimental double-cone blender with no deflectors and with deflectors.
About: This article is published in Powder Technology.The article was published on 1972-01-01. It has received 13 citations till now. The article focuses on the topics: Complete mixing & Mixing (physics).
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Journal ArticleDOI
TL;DR: In this article, the essential points to be examined for the treatment of solids mixing are reviewed and the definitions of the quality of a mixture, the mixing mechanisms, the possibilities for the choice of solid mixer, the experimental assessment of homogeneity and mixing indexes and the numerical simulation of mixing processes are reported.

300 citations

Journal ArticleDOI
TL;DR: In this article, the effects of fill level, mixing time, and use of baffles on the mixing performance of a pilot plant scale tote (bin)-blender were investigated.

84 citations

Journal ArticleDOI
TL;DR: In this paper, a double-cone blender was modified by means of a stationary deflector plate in order to enhance axial particle flow, which increased the mixing rate by a factor of 25:1.

83 citations

Journal ArticleDOI
TL;DR: This survey presents a general evaluation of the subject of powder mixing and a comprehensive classified list of 650 references to the topic and a selection of those of general background interest.

81 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigate granular segregation in a double-cone blender and report several new and spontaneously occurring segregation patterns, including stripes, bands, and a symmetry-breaking state in which one species vacates half the tumbler.
Abstract: We investigate granular segregation in one of the most common industrial devices used in granular processing: the double-cone blender. We report several new and spontaneously occurring segregation patterns, including stripes, bands, and a symmetry-breaking state in which one species vacates half the tumbler. By varying the tumbling speed along with particle size and size ratio, we find that the transitions between segregated patterns are extremely sharp: Changes in fill level or speed of under one percent are sufficient to produce a reproducible qualitative change in the observed pattern. We show that the several distinct segregation patterns observed experimentally can be reproduced from a simplified model in which outward rolling on the convective granular cascade competes against inertial motion of rapidly moving large particles. Finally, we identify a cutoff particle size ratio above which large particles become buried in the cascading flow, and segregation appears to cease.

53 citations