
Laos 2006 10 6 Raw Materials and Energy required for production of 1 ton of Cement 1 095 Limestone 204 Clay 78 Silica 30 Iron ore 34 Gypsum 1 439 total Raw Materials kg 1 kg of coal equivalent where HHV of coal is 6 200 kcal kg 99 Electric power kWh 105 Fuel 1 Energy Consumption 4 Heavy oil