Limestone is by definition a rock that contains at least 50% calcium carbonate in the form of calcite by weight. Limestone is a rock with an enormous diversity of uses. It could be the one rock that is used in more ways than any other. Most limestone is made into crushed stone and used as a construction material. It is used as a crushed stone for road base and railroad ballast. It is used as an aggregate in concrete. It is fired in a kiln with crushed shale to make cement.

Raw material:limestone Moh's hardness:3 Feeding size:20-40cm Capacity:150t/h Discharging size:0-2cm/2-3cm/3-4cm Application:hydropower station dam building Equipment list: 

< 0.25 mm is called extra fine sand
 0.25-0.35 mm called fine sand
 0.35-0.5 mm called medium sand
 0.5 mm or more called coarse sand or coarse aggregate, namely stones.