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.