Cement grinding with Horomill

Horomill concept, first demonstrated in Italy in 1993, offers an attractive alternative. In the Horomill, a horizontal roller within a cylinder is driven. The centrifugal forces resulting from the movement of the cylinder cause a uniformly distributed layer to be carried on the inside of the cylinder. The layer passes the roller (with a pressure of 700-1000 bar). The finished product is collected in a dust filter. The Horomill is a compact mill that can produce a finished product in one step and hence has relatively low capital costs. Grinding Portland cement with a Blaine of 3200 cm2/g consumes approximately 23 kWh/t and even for pozzolanic cement with a Blaine of 4000, power use may be as low as 30 kWh/t.

Development Status Products
Commercial
Cement

Cement grinding with HoromillCosts & Benefits

Parent Process: Finish Grinding
Energy Savings Potential

Power consumption can be reduced by 10-25 kWh/ton of cement  based on  clinker  grindability and product blaine. 

CO2 Emission Reduction Potential

In the Chinese context, emissions can be reduced 7.9 to 19.8 kg of CO2/t-cement with this technology.

In the Indian context, emissions can be reduced 8.1 to 20.3 kg of CO2/t-cement with this technology.

Costs

Not available

Cement grinding with HoromillSchematic

Cement grinding with Horomill Publications

Energy Efficiency Improvement Opportunities for the Cement Industry

The U.S. Environmental Protection Agency’s (EPA) energy guide, Energy Efficiency Improvement and Cost Saving Opportunities for Cement Making, discusses energy efficiency practices and technologies that can be implemented in cement manufacturing plants. This ENERGY STAR guide provides current real world examples of cement plants saving energy and reducing cost and carbon dioxide emissions.

Page Number: 

19-20