An experimental investigation on rock crushability using jaw and cone crushers
Özet
This study covers the investigation of rock crushability using laboratory-scale cone and jaw
crushers for five types of hardrocks. For this purpose, physico‒mechanical properties of the investigated
rocks are determined. Aggregate samples with a particle size range of 10.00 – 14.00 mm are prepared
for crushability tests. After performing crushability tests, crushed particles are sieved and considering
sieve analysis results, crushability indices are identified for each rock and crusher type. The performance
of the crushers concerning their experimental setup is investigated by Taggart method.
It is achieved from crushability tests that, the performance of the cone crusher is approximately
two times better than the one of the jaw crusher for their experimental setups. The crushing time (Tc)
seems to increase with increasing in rock strength properties. Furthermore, remarkable relationships
are obtained between several rock properties and crushability test results. It can be claimed that
crushability of rocks are dependent upon crusher type, setup of crushing process, rock strength as well
as the mineral hardness. Considering these types of variables, higher achieving benefits of aggregate
production could be satisfied at lower costs.
