Compared with ordinary lime, the advantages of active lime are:

Less volume density (1.5～1.7g/cm3)

Larger specific surface area (1.2～2m2/g)

Higher porosity (up to 50%）

Mineral crystal of calcium oxide is finer (1-3μm)

Higher chemical purity (CaO＞92%，SiO2+Fe2O3+Al2O3＜3%，S＜0.02～0.05%)

Lower content of residual CO2 (LOI≤2～5%）

Higher activity (up to 380ml)

Most of premium active lime are being produced with rotary kiln technology in USA, Germany and Japan. More rotary kilns instead of shaft kilns are being installed for high quality active lime in China since 2015.

Advantages of rotary kilning:

1.Maximum single line output – 1200TPD in China, 1500TPD in Germany.

2.Independent control of major equipment (preheater, kiln & cooler).

3.Flexible adjustment as per customer’s requirement on quality and output.

4.The best quality –

5.Limestone, sized at 10-30mm, can be used to reduce the raw material cost.