Determination of particle size distributions of industrial side streams by using laser diffraction and sieving methods
Huseynova, Shahla (2018)
Diplomityö
2018
School of Engineering Science, Kemiantekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2018091035391
https://urn.fi/URN:NBN:fi-fe2018091035391
Tiivistelmä
Due to high transportation and treatment costs, the disposal of industrial solid residues has been preferred for backfilling mine openings over years. Recently, utilization of such residues has gained an increasing interest in different areas, especially as a supplementary cementitious material in concrete industry. Achieving this will also contribute to building long-term sustainable method to decrease GHG emission.
The aim of this work was to measure particle size distribution (PSD) of the materials as it plays a key importance in the product quality. For this purpose, different PSD determination and classification techniques were studied, and laser diffraction and sieving methods were decided to use. The samples to be analyzed were ashes, green liquor dregs, tailings, lime mud consisting mainly of CaCO3, coating sludge, deinking flotation reject foam, lime and construction waste. LD and sieving measurements were performed with Malvern Mastersizer 3000 and Haver & Boecker sieve shaker, respectively. It was found that ash samples, construction waste and tailings gave good correlation between two methods while lime samples (# 3, 12, 13) had poor correlation. Deviation between results happened mostly when the particles were elongated, rods, irregular shaped and sticky. Moreover, it was observed that the results are more reliable when the combination of these methods was used, especially for the samples that have non-uniform particle population.
The aim of this work was to measure particle size distribution (PSD) of the materials as it plays a key importance in the product quality. For this purpose, different PSD determination and classification techniques were studied, and laser diffraction and sieving methods were decided to use. The samples to be analyzed were ashes, green liquor dregs, tailings, lime mud consisting mainly of CaCO3, coating sludge, deinking flotation reject foam, lime and construction waste. LD and sieving measurements were performed with Malvern Mastersizer 3000 and Haver & Boecker sieve shaker, respectively. It was found that ash samples, construction waste and tailings gave good correlation between two methods while lime samples (# 3, 12, 13) had poor correlation. Deviation between results happened mostly when the particles were elongated, rods, irregular shaped and sticky. Moreover, it was observed that the results are more reliable when the combination of these methods was used, especially for the samples that have non-uniform particle population.