| Chemical Composition | % Composition of BLA at 500˚C calcinating temperature | % Composition of BLA at 600˚C calcinating temperature | % Composition of BLA at 700˚C calcinating temperature |
| Silicon Oxide | 75.80 | 75.90 | 78.27 |
| Aluminum Oxide | 3.75 | 4.15 | 1.69 |
| Ferric oxide | 4.98 | 1.27 | 1.63 |
| Titanium oxide | 1.54 | 0.20 | 2.02 |
| Calcium oxide | 6.49 | 8.02 | 5.98 |
| Lead oxide | 0.21 | 2.19 | 0.81 |
| Magnesium oxide | 3.70 | 2.06 | 1.65 |
| Manganese oxide | 0.014 | 0.02 | 0.02 |
| Chromium oxide | 0.32 | 0.12 | 0.14 |
| Sodium Oxide | 0.16 | 0.24 | 0.28 |
| Potassium Oxide | 0.40 | 5.62 | 3.16 |
| Sulphide | 1.20 | 1.08 | 3.01 |
| Loss on Ignition | 1.12 | 0.09 | - |