Spreading segregation of bulk blends

(2005)

Grey level intercepts distributions and grain size estimation

in Proceedings 8th European Congress for Stereology and Image Analysis (2005)

Robustness of Planar Shape Descriptors of Particles

in Chung, C.-F. (Ed.) Proceedings Mathematical Geology Congress (2005)

Segregation Of The Bulk Blend Fertilizers

in Chemometrics and Intelligent Laboratory Systems (2004), 74(1),

Monitoring color alteration of ornamental flagstones using digital image analysis.

in Prykryl, R. (Ed.) Dimension Stone (2004)

Analisis Mineralogico Cuantitativo

in XVI Congreso Geologico Boliviano (2004)

Quality control of particulate materials through image analysis.

in Optics and Industrial Vision (2004)

Direct estimation of sieve size distributions from 2-D image analysis of sand particles

in Proceedings PARTEC 2004 (2004)

Image Measurements

in Francus, P. (Ed.) Image analysis, sediments and paleoenvironments (2004)

Segregation of the bulk blend fertilizers

in Chemometrics and Intelligent Laboratory Systems (2004), 74(1), 215-224

Bulk blend fertilizers are a mixture of different kinds of fertilizers in order to obtain a predicted N-P-K chemical composition. Although this production method has some advantages, segregation appears ... [more ▼]

Bulk blend fertilizers are a mixture of different kinds of fertilizers in order to obtain a predicted N-P-K chemical composition. Although this production method has some advantages, segregation appears at different stages, from the production to the final spreading on the field. An experiment has been implemented to predict and quantify the influence of some physical properties on the occurrence of segregation. The principle was to blend two fertilizers having identical physical properties except for one, such as size, shape or density and to measure the segregation of the blend following various operations, such as filling or emptying a container. Results show that the spread of the fragment size distribution has a big influence on the segregation of the generated heap. In order to reduce this phenomenon, the granulometric spread index (GSI) [(d(84)-d(16))/2d(50)] must be smaller than 10. Other properties don't seem to have an influence. The granulometric segregation can lead to a chemical heterogeneity. The absolute sum of the difference between d(16) and d(84) must be limited around 0.5 mm. Above this value, the chemical segregation begins to be excessive. It seems also that if there is a limited difference in size for the components, the chemical segregation is amplified if the density of the fertilizer with the biggest particles is lower. It is not the case for the difference in shape. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]