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particle size distribution.pdf

particle size distribution.pdf - Particle Size Distribution...

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1 Particle Size Distribution Using a MicroTrac S3500 Dynamic Light Scattering Laser William Smeltzer, [email protected] , 1 November, 2016 Abstract Particle size distribution is a measurement used in many different industries such as determining the proper proppant to use in hydraulic fracking or reflective paint used on highways. The three most important parameters that describe the distribution are mean, median, and standard deviation. The three samples used in this study depend highly on the particle size. Proppants used for hydraulic fracking need to have a narrow cut to keep fractures in the shale open to allow the gas or oil to escape without having smaller proppants get stuck and block the flow. Activated carbon needs to have a wider distribution of particles to be able to filter out a larger plethora of contaminants. With the recent improved boiler systems, coal particles need to be within a certain particle range to maximize the burning efficiency. Proppant 3B sample had a range of D 10 241.7um, D 90 411.7um and a standard deviation of 70um. This narrow cut with a Gaussian distribution demonstrates that this could be a useful proppant. The glass sphere sample came back with two peak values of 34.83um and 76.64um, which there should only be one. This means the particle size distribution analyzer is not calibrated correctly and will alter the accuracy of the data. Particle size distribution and its parameters have allowed for engineers to further the advancement of filtration systems, hydraulic fracking industry, concrete properties which allow for possible improvements in the future. Introduction Due to the average particle size being a single number which gives minimal information and cannot describe the distribution of the sample, gave rise to the use of particle size distribution. 1 The particle size distribution not only describes the sizes of the material but also the range of particle sizes in the sample. 1 The particle size influences many properties of particulate materials and is a valuable indicator of quality and performance. The size and shape of particles determines the flow and compaction properties. 1 There are many specific reasons why controlling and measuring particle size is important. In the paint industry, particle size influences the appearance properties including gloss and tinctorial strength. 1 The size and shape of the glass beads used in highway paint impacts the reflectivity useful for drivers at night. 1 Creating metal parts, the size and distribution of the metal particles impacts the powder behavior during die filling, compaction, and sintering which determines the properties of the metal. 1 Particle size distribution is a major tool in the fracking industry where proppants are utilized.
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