For the manufacture of Portland cement, the proportions of raw materials used, are
1. lime 63% ; silica 22% ; other ingredients 15%
2.lime 22% ; silica 63% ; other ingredients 15%
3.silica 40% ; lime 40% ; other ingredients 20%
4.silica 70% ; lime 20% ; other ingredients 10%.
Posted Date:-2021-03-26 06:50:33