<p>Recently several technologies have been developed for the beneficial uses of coal fly ash in different fields. The present research deals with the coal fly ash of Barapukuria Thermal Power Plant, Bangladesh as a source of materials for the production of Portland cement, which carries 40% Al₂O₃, 50% SiO₂, 3% Fe₂O₃, 0.45% SO₃, and 1.29% CaO, respectively. When it is mixed with hydrated lime and fired at 1250℃, cementitious clinkers were produced as tricalcium silicates, dicalcium silicates, tricalcium aluminates, and tetracalcium aluminferrite with free CaO, identified by XRD analysis. The XRF analysis showed that the major constituent of the produced clinker was approximately 60.26% CaO, 14. 56% Al₂O₃, 18% SiO₂ and 2.79% Fe₂O₃, respectively. The compressive strength of such clinkers was measured at 25.62&#xa0;MPa, 37.15&#xa0;MPa, 50.28&#xa0;MPa, and 62.48&#xa0;MPa for 3, 7, 14, and 28-day periods of curing, respectively. This result revealed that the chemical composition values of the ASTM C150 standard and those of synthesized Portland cement clinkers examined in this study showed no significant differences. So, the use of fly ash as a raw mixture component for the production of cement clinker not only enables the substitution of natural raw materials but could also have a positive influence on the reduction of the sintering temperature of cement clinker, which reduces Green House Gas (GHG) emission from the environment with saving in product cost. Its novelty lies in its ability to replace cement and promoting resource conservation, while also enhancing concrete’s durability, workability and strength.</p>