A study on the production of high quality aggregates from metso barmac rock on rock vertical shaft impact crusher and cone crusher

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dc.contributor.authorAmir, Mahathir
dc.date.accessioned2014-10-27T03:56:48Z
dc.date.available2014-10-27T03:56:48Z
dc.date.issued2009
dc.descriptionMasteren_US
dc.description.abstractA study was conducted to evaluate the performance of cone crusher and Metso Barmac VSI crusher in producing high quality aggregates. Various analyses were completed to study the characteristics of crushed products such as shape (Elongation Index (EI); Flakiness Index (FI); and voids content analysis), size distribution, surface texture (Scanning Electron Microscopy (SEM)) and strength (Aggregate Crushing Value (ACV) and Aggregate Impact Value (AIV)). A study was also conducted to evaluate a good rock build-up formation in influencing the crushing mechanism. Crushed products of Feed B displayed better results compared to the crushed products of Feed A. Crushing with CSS of 12mm and increasing the feed rate of the cone crusher to 2.6 t/h which was the choked feeding crushing, gave improvement to the characteristics of crushed products in terms of shape and surface texture with EI and FI values of 31.25% and 16.29% respectively. ACV and AIV analyses showed values of 19.58% and 24.42% respectively. Operating the Barmac crusher at 60 Hz rotor speed and 0% cascade ratio was found to produce crushed products with lower percentage of EI and FI which were 19.96% and 12.02% respectively compared to the cone crusher. Similarly, lower values of ACV and AIV were obtained, which were 15.61% and 21.06% respectively. Overall, Barmac crusher was capable to produce better quality of products in terms of shape and surface texture compared to the cone crusher.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/153
dc.language.isoenen_US
dc.subjectBiological Scienceen_US
dc.subjectMetso barmac rocken_US
dc.subjectCone crusheren_US
dc.titleA study on the production of high quality aggregates from metso barmac rock on rock vertical shaft impact crusher and cone crusheren_US
dc.typeThesisen_US
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