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Investigation of Ball Mill and Vibrating Screen Parameters on Efficiency of Zinc Ash Recovery
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The main objective of this article is to investigate the effect of ball milling parameters, including the values of rotational speed, number of milling balls, and time of milling, as well as the amount of loaded ash, on the efficiency of zinc separation from its oxide and hence, the efficiency of zinc recovery from hot-dip galvanizing ash.The ball mill processing parameters were determined and optimized the processing parameters were then analysed and the optimum combination of ball mill processing parameters were suggested. All the tests were done in an industrial scale and are applicable to any hot-dip galvanizing plant. The milled ash was remelted and the efficiency of zinc recovery was obtained and compared to non-milled ash. The results showed a significant zinc recovery rate of 88 % from the largest ash particles (screened with mesh 10) with a ~17 % increase in the total rate of zinc recovery from three ranges of particle sizes (screened with mesh 10, 20 and 40).

Place, publisher, year, edition, pages
Keyword [en]
Zinc ash, Hot-dip galvanizing, recovery efficiency, dross, extractable zinc.
National Category
Mechanical Engineering
URN: urn:nbn:se:bth-11994OAI: diva2:934115
Subject / course
MT2412 Examination Thesis
Educational program
TMAMM Masters Programme in Mechanical Engineering, 60 points
Available from: 2016-06-08 Created: 2016-06-08 Last updated: 2016-06-08Bibliographically approved

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