Particle shape effects on particle size measurement for crushed waste glass

Garboczi, Edward J.; Riding, Kyle A.; Mirzahosseini, Mohammadreza

doi:10.1016/j.apt.2016.12.002

Cited by 35 publications

(14 citation statements)

References 21 publications

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“…With consistent soil laser diffraction PSA results, the issue of equating laser diffraction and sedimentation results is transformed into an empirical problem with various practical solutions, as has been demonstrated by Fernlund et al (2007) for sieving and image analysis methods and by Garboczi et al (2017) for laser diffraction, sieving, and a combination of X‐ray computer tomography and spherical harmonic analysis. The solution chosen in this work was based on three steps: (i) separation of the sand fraction via sieving, as in the sieve/pipette method, (ii) choice of a nominal particle laser diffraction diameter that optimized the matching of clay and silt fractions between the two methods, and (iii) use of the results of the laser diffraction PSA to describe the nominal particle size distribution (i.e., the relative proportion of nominal light scatter particle diameter distribution within the clay and silt fractions).…”

Section: Discussionmentioning

confidence: 99%

Making Soil Particle Size Analysis by Laser Diffraction Compatible with Standard Soil Texture Determination Methods

Faé

Montes

Bazilevskaya

et al. 2019

Soil Science Soc of Amer J

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The standard sieving, pipette, and hydrometer methods for soil particle size analysis (PSA) have three main drawbacks: (i) the procedures are tedious, (ii) the procedures are time consuming, (iii) and the results are protocol dependent. Laser diffraction PSA delivers rapid results using standardized procedures, but so far it has been difficult to reconcile results with those from standard sedimentation methods. The objective of this study was to develop a protocol that would permit direct usage of laser diffraction PSA and render results compatible with current methods. The protocol was developed using 54 standard soil samples from different textural classes. Regression of the laser diffraction PSA against the hydrometer/pipette method yielded R2 values of 0.92/0.9, 0.92/0.94, and 0.99/0.99 and RMSE values of 0.04/0.05, 0.07/0.06 and 0.05/0.03 for clay, silt, and sand, respectively. These statistics are comparable to those obtained by regressing results of the hydrometer against the sieve and pipette methods. A key factor in securing accurate and precise results was limiting the particle size range of the samples by wet sieving the sand fraction. This created representative samples and stable soil dispersed suspensions, allowing accurate estimations of particle size distribution for clay and silt fractions without empirical transformations. Results obtained with the proposed protocol matched those of standard sedimentation analyses for a wide range of soils, encouraging further adoption of laser diffraction for soil PSA. Core Ideas Laser diffraction particle size analysis can produce results compatible with standard pipette and hydrometer methods. A key step is to wet‐sieve the sand fraction after suspending the soil sample in the dispersant solution. The proposed protocol is faster, uses smaller samples, and provides more detail than standard sedimentation methods.

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Section: Discussionmentioning

confidence: 99%

Making Soil Particle Size Analysis by Laser Diffraction Compatible with Standard Soil Texture Determination Methods

Faé

Montes

Bazilevskaya

et al. 2019

Soil Science Soc of Amer J

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“…where ψ is the sphericity of the particle, l the maximum width, h the maximum thickness, and L the maximum length. e length, width, and thickness are easily measured as basic sizes to estimate particle shape [23,24]. e relationship of the three size parameters is L ≥ l ≥ h, and their direction is perpendicular to each other in space.…”

Section: Methodsmentioning

confidence: 99%

Effects of the Shape and Size of Irregular Particles on Specific Breakage Energy under Drop Weight Impact

Gan

Gao

Zhang

et al. 2019

Shock and Vibration

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Particle shape and size are main factors influencing particle breakage. Single-particle breakage tests were conducted on irregular magnetite ore using modified drop weight impact equipment to analyze the effect of shape and size on specific breakage energy. A method to measure the effective breakage energy is presented. Ore particles with different sphericities and different sizes were broken into several fragments with differing impact energies in the tests. Experimental studies indicate that the shape of particles significantly influences the impact loading mode and breakage progress; the specific breakage energy has an obvious relationship with the sphericity and the initial size. The specific breakage energy decreases with larger initial loading area. The particle needs less specific breakage energy if the shape or placement state is more conducive to tensile fracture. There is an increase in specific breakage energy corresponding to an increase in particle sphericity with fixed initial size range. With the increase in the initial size of the particle, the specific breakage energy decreases with fixed sphericity range, which presents a power function with the exponent −0.5. The comprehensive relationship between specific breakage energy, particle sphericity, and initial size was established, showing that the input power of the crushing machinery and the optimization of crushing technology should be performed with consideration of the influence of particle shape and initial size to reduce specific energy consumption and improve energy efficiency.

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“…However, LDs may not be adequate for coal dust because of its irregular morphology [18][19] and tendency to agglomerate [20]. Although methods to compensate for the effects of morphology have been investigated [15,[21][22], most commercially available LDs do not include the sensing and analysis tools required to calibrate for irregular morphologies [12]. Including morphology effects is important in estimating particle diameter because assuming spherical shapes of particles has led to inaccuracies in sizing irregular particles [23][24].…”

Section: Introductionmentioning

confidence: 99%

Calibration of the cloud and aerosol spectrometer for coal dust composition and morphology

Barone

Hesse

Seaman

et al. 2019

Advanced Powder Technology

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Particle shape effects on particle size measurement for crushed waste glass

Cited by 35 publications

References 21 publications

Making Soil Particle Size Analysis by Laser Diffraction Compatible with Standard Soil Texture Determination Methods

Making Soil Particle Size Analysis by Laser Diffraction Compatible with Standard Soil Texture Determination Methods

Effects of the Shape and Size of Irregular Particles on Specific Breakage Energy under Drop Weight Impact

Calibration of the cloud and aerosol spectrometer for coal dust composition and morphology

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