Difference between revisions of "User talk:Alex Doll"
(→Ball and liner wear benchmarking) |
(→Ball and liner wear benchmarking) |
||
| Line 13: | Line 13: | ||
* Ball consumption: 3 kg/t (2-3.5 kg/t) or 0.16 g/kWh |
* Ball consumption: 3 kg/t (2-3.5 kg/t) or 0.16 g/kWh |
||
* Bond predicted ball mill ball consumption: 0.13 kg/kWh; ''actual ~ predicted'' |
* Bond predicted ball mill ball consumption: 0.13 kg/kWh; ''actual ~ predicted'' |
||
| − | * Grate wear: 0.06 g/kWh steel; 0.02 g/kWh rubbber |
||
* Bond predicted ball mill liner consumption: 9.5 g/kWh |
* Bond predicted ball mill liner consumption: 9.5 g/kWh |
||
| + | * Shell liners life of 6 months; assume 3" thick at end of life. 5 g/kWh wear (+ 3 g/kWh scrapped) |
||
| + | * Grate wear: 0.06 g/kWh steel; 0.02 g/kWh rubbber |
||
* Laboratory testwork: |
* Laboratory testwork: |
||
Revision as of 22:07, 11 April 2013
Not sure what to do with this benchmarking data yet, but I'll record it here so I can find it in the future
Ball and liner wear benchmarking
Ben Burger, Luis Vargas, Hamer Arevalo, Sergio Vicuna, Jim Seidel, Walter Valery, Alex Jankovic, Roberto Valle and Eduardo Nozawa, YANACOCHA GOLD SINGLE STAGE SAG MILL DESIGN, OPERATION, AND OPTIMIZATION, SAG 2011
Single-stage SAG mill, reported with slurry pooling
- New liner effective thickness: 7.7 inches (half-worn 5.5 inches)
- Ball charge: 19% v/v (18-20%)
- total charge: 22.5% v/v (20%-25%)
- grate open area 12%; wear rate 0.6 mm/day (rubber)
- Operating work index 23.0 - 25.2 metric
- Ball consumption: 3 kg/t (2-3.5 kg/t) or 0.16 g/kWh
- Bond predicted ball mill ball consumption: 0.13 kg/kWh; actual ~ predicted
- Bond predicted ball mill liner consumption: 9.5 g/kWh
- Shell liners life of 6 months; assume 3" thick at end of life. 5 g/kWh wear (+ 3 g/kWh scrapped)
- Grate wear: 0.06 g/kWh steel; 0.02 g/kWh rubbber
- Laboratory testwork:
- Bond abrasion index: 0.5 (0.467-0.555)
- DWi 3.45 kWh/m³
- Mia 12.3
- A: 82.8; b: 0.88; A×b: 72.9
- ta: 0.75
- density: 2.52 t/m³
