Presently bigger cement plants are having all mechanized mines for raising the
limestone for processing in cement plants. This mechanized mining is to utilize
heavy duty machinery like rock drills, excavators and dumpers, for raising and
transporting the lime stone from mines head to crushing plant. The following factors
are considered for selection of such equipment in a cost effective way.
Production of Limestone and the Total Handling from Mine Pit.
- Chemical & Physical properties of limestone
- Quality of Limestone and its distribution at mines face.
- Pit Dimensions and Lay out.
- Location of crusher.
- Average Lead and Lift of dump hopper from the loading point.
- General size of Run of Mines to be handled and feed size to the crusher.
- Output per Man-shift required.
- Traffic movement in the Mines.
Below table gives an idea of equipment requirement with various options @
clinker capacity 9500 tpd.
- SELECTION OF MINING EQUIPMENT FOR LIME STONE MINES
Description UOM Requirement
Limestone required from quarry TPD 15459
Waste to be handled @ 1:0.3 stripping ratio TPD 4638
Capacity required of quarry TPD 20097
Case 1: 6.5 cu. m Excavator with 55MT Dumpers
Rate of production for 6.5 M3 Excavator in limestone TPD 650
Excavator running hrs. h/shift 7
Excavator capacity for limestone t/shift 4550
No of shift operation Nos. 3
Say TPD 13650
No of excavator to be deployed of 6.5 M3 size Nos. 2
55MT dumper TPH @ 4 trips per hour TPH 220