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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.17 [2010] >
IJCT Vol.17(6) [November 2010] >
| Title: | Comminution behaviour of microwave heated two sulphide copper ores |
| Authors: | Kaya, Erol |
| Keywords: | Microwave irradiation
Comminution
Copper ore |
| Issue Date: | Nov-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The effect
of microwave irradiation on the comminution of two sulphide copper ores with
different mineralogy were investigated to enhance the milling processes. Each
ore was subjected to microwave radiation for varying time periods to determine
their heating profiles. Changes in breakage characteristics with the microwave
exposure time were quantified by sieving breakage, standard Bond work index
grindability and single particle drop weight comminution tests. The results of
the sieving breakage tests with the untreated and microwaved samples indicated
significant improvements in the size reduction due to microwave energy induced
macro fracturing. Differing ore mineralogy has been shown to affect the
effectiveness of microwave assisted size reduction. The results of the standard
Bond work index grindability tests performed with both the microwave treated
copper ores, on the other hand, suggested no significant improvements in
grindability. The single particle fracture experiments performed with an
Ultrafast Load Cell (UFLC) indicated similar results of no significant
improvements in the fracture energies of the microwave treated ore samples. |
| Page(s): | 455-461 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.17(6) [November 2010]
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