Spreading Segregation of Blended Fertilizers: Influence of the Particles Properties

Miserque, Olivier; Pirard, Eric; Schenkel, Yves; Mostade, O.; Huyghebaert, B.

doi:10.13031/2013.24258

Cited by 10 publications

(12 citation statements)

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“…These correspond to particle diameters (mm) below which 16%, 50%, and 84% (by weight) of the material respectively can be collected after sieving [48]. The 50 value equates to the median particle diameter [49]. Based on these percentiles, a granulometric spread index (GSI, %) was derived [49]…”

Section: Physical Propertiesmentioning

confidence: 99%

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Characterisation of Organomineral Fertilisers Derived from Nutrient-Enriched Biosolids Granules

Antille

Sakrabani

Tyrrel

et al. 2013

Applied and Environmental Soil Science

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Organomineral fertilisers (OMFs) were produced by coating biosolids granules with urea and potash. Two OMF formulations with N : P2O5 : K2O compositions: 10 : 4 : 4 (OMF10) and 15 : 4 : 4 (OMF15) were developed for application in grassland and arable crops. Routine fertiliser analyses were conducted on four batches of OMF and biosolids granules and compared with a sample of urea to determine key physical and chemical properties of the materials which affect handling and spreading, soil behaviour, and fertiliser value. Bulk and particle densities were in the range of 608 to 618 kg m−3, and 1297 to 1357 kg m−3, respectively. Compression tests showed that OMF particles undergo deformation followed by multiple failures without disintegration of the granules when vertical load was applied. Static particle strength was between 1.18 and 4.33 N mm−2depending on the particle diameter. The use of a model for fertiliser particle distribution studies showed that OMF granules should be between 1.10 and 5.50 mm in diameter with about 80% of the particles in the range of 2.25 to 4.40 mm to enable application at 18 m tramline spacing. This research utilises novel technology to improve the fertiliser value of biosolids, reduce disposal costs, and deliver a range of environmental benefits associated with recycling.

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Section: Physical Propertiesmentioning

confidence: 99%

“…The 50 value equates to the median particle diameter [49]. Based on these percentiles, a granulometric spread index (GSI, %) was derived [49]…”

Section: Physical Propertiesmentioning

confidence: 99%

Characterisation of Organomineral Fertilisers Derived from Nutrient-Enriched Biosolids Granules

Antille

Sakrabani

Tyrrel

et al. 2013

Applied and Environmental Soil Science

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show abstract

“…These correspond to particle diameters (mm) below which 16%, 50% and 84% (by weight) of the material respectively can be collected after sieving (Persson, 1996). The d 50 value equates to the median particle diameter (Miserque et al, 2008). Based on these percentiles, a granulometric spread index (GSI, %) was derived using Equation [1] (Lance, 1996;Miserque et al, 2008).…”

Section: Physical Propertiesmentioning

confidence: 99%

“…The d 50 value equates to the median particle diameter (Miserque et al, 2008). Based on these percentiles, a granulometric spread index (GSI, %) was derived using Equation [1] (Lance, 1996;Miserque et al, 2008).…”

Section: Physical Propertiesmentioning

confidence: 99%

Development of organomineral fertilisers derived from nutrient-enriched biosolids granules: product specification

Antille¹,

Sakrabani²,

Tyrrel³

et al. 2013

2013 Kansas City, Missouri, July 21 - July 24, 2013

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“…Particle properties of size, density, and shape are critical factors to consider when discussing spread quality. While acceptable bulk spreading results can be demonstrated based on a low CV (15%) for a blended product across the swath, segregation of particles based on particle density may still occur (Miserque et al, 2008). In this study, 50/50 blends of product placed in a spreader were found to exhibit a 70/30 spread ratio of the individual products in collection pans at a distance of 52 ft from the swath center.…”

Section: Introductionmentioning

confidence: 99%

Granular Fertilizer Spreader Swath Uniformity Achieved at Varying Target Application Rates

Crozier

Roberson

2014

Crop Management

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This study measured the within‐swath uniformity of both spinner and pneumatic spreaders over a range of material application rates commonly associated with precision agriculture schemes (25 to 200 lb/acre). Although small pan sampling is not appropriate for spreader rate calibration, results suggested that five of the spreaders delivered rates ranging from 50 to 200 lb/acre with reasonable accuracy. Four of the five spreaders also appeared capable of delivering an even lower rate, 25 lb/acre. Within swath coefficients of variability (CV) values ranged from 16 to 30% for the most uniform of the spreaders tested, and from 45 to 122% for the least uniform. When different products were applied by multi‐bin spreaders, substantial fluctuation in measured product ratios occurred for bulk bin products. For a single spreader evaluated with a micronutrient bin, micronutrient application rates and variability were relatively consistent regardless of the co‐applied bulk bin product rate. The type of spreader (spinner or pneumatic) did not appear to determine the uniformity of application. Our data suggests a within‐swath CV of 20 to 30% as a reasonable uniformity target for granular fertilizer spreaders under North Carolina commercial farm conditions.

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Spreading Segregation of Blended Fertilizers: Influence of the Particles Properties

Cited by 10 publications

References 0 publications

Characterisation of Organomineral Fertilisers Derived from Nutrient-Enriched Biosolids Granules

Characterisation of Organomineral Fertilisers Derived from Nutrient-Enriched Biosolids Granules

Development of organomineral fertilisers derived from nutrient-enriched biosolids granules: product specification

Granular Fertilizer Spreader Swath Uniformity Achieved at Varying Target Application Rates

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