Factors Effecting Grinding Efficiency
The grinding efficiency factors should be checked and applied as required to place the operating work index at the same level as the results from grindability tests. The operating work index so calculated is referred to as Wioc. This operating work index divided by the work index from the grindability test give a measure of grinding efficiency in terms of actual performance compared to calculated or rated performance as a percentage.
The multipliers for the efficiency factors can be determined as discussed in the following.
EF1 – Dry grinding – form the same range of work, dry grinding requires 1.3 tiems as much power as wet grinding. ■
Factors Effecting Grinding Efficiency
The grinding efficiency factors should be checked and applied as required to place the operating work index at the same level as the results from grindability tests. The operating work index so calculated is referred to as Wioc. This operating work index divided by the work index from the grindability test give a measure of grinding efficiency in terms of actual performance compared to calculated or rated performance as a percentage.
The multipliers for the efficiency factors can be determined as discussed in the following.
EF1 – Dry grinding – form the same range of work, dry grinding requires 1.3 tiems as much power as wet grinding. ■
Factors Effecting Grinding Efficiency
The grinding efficiency factors should be checked and applied as required to place the operating work index at the same level as the results from grindability tests. The operating work index so calculated is referred to as Wioc. This operating work index divided by the work index from the grindability test give a measure of grinding efficiency in terms of actual performance compared to calculated or rated performance as a percentage.
The multipliers for the efficiency factors can be determined as discussed in the following.
EF1 – Dry grinding – form the same range of work, dry grinding requires 1.3 tiems as much power as wet grinding. ■
Forged Steel or Cast Balls?
Grinding with Forged Steel or Cast Balls?
Are you are looking for grinding efficiency or grinding costs?
Grinding efficiency: as a first estimate, I would tend to say no major difference if you ad the same ball sizes (to control mill power draw).
Grinding costs: very much depends on the milling conditions. Main parameters are corrosion (ie iron ore), impact (ie grate discharge ball mills) and abrasion (ie sand milling industry).
One approach is to take a sample at the outlet of the mill (to analyze for corrosion and abrasivity) and to go into the mill (to evaluate impact conditions such as liner design, filling degree, OF/GD, mill revolution speed). Then do a “marked steel ball test” with different alloys and check which ones gives you the best results.
If you are looking for grinding media,please contact me:banyechan@gmail.com ■