INVESTIGATION OF OPTIMAL PARAMETERS FOR LIMESTONE MILLING PROCESS IN MORTAR PRODUCTION
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Abstract
Mortar cement has been developed for widespread use in the construction industry. One of the important raw materials used in the mortar production is sand. Milling process was once used to digest aggregated limestone to produce sand of the desired size (0.1-0.6 mm), with the residue being a significant volume of powder smaller than 0.1 mm. The powder or fine dust can pollute the air, interrupt the milling process, and necessitate storage and removal of the powder. The optimal set parameters of the vertical roller mill were investigated in this study to improve the limestone milling operation, increase the desired sand, and decrease powder. According to the experimental results, the estimated values of parameters reflected that feed rate of raw material at 130 tons per hour, milling pressure 103 bar, table rotating speed 9.5 rpm, and fine dust suction rate at 37,838 m3/h could increase the proportion of sand from 62.91% to 77.34%, implying productivity risen by 14% while the proportion of the percentage of fine powder decreased from 37% to 14.80 %.
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The published articles are copyright of the Engineering Journal of Research and Development, The Engineering Institute of Thailand Under H.M. The King's Patronage (EIT).
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