Calcium Oxide

Plg minerals offers high quality manakpur limestone’s calcium oxide powder
• heat: quicklime releases heat energy by the formation of the hydrate, calcium hydroxide, by the following equation:
cao (s) + h2o (l) ca(oh)2
• light: when quicklime is heated to 2,400 °c (4,350 °f), it emits an intense glow. This form of illumination is known as a limelight, and was used broadly in theatrical productions prior to the invention of electric lighting.
• cement: calcium oxide is a key ingredient for the process of making cement.
• as an alkali in biodiesel production
• petroleum industry: water detection pastes contain a mix of calcium oxide and phenolphthalein. Should this paste come into contact with water in a fuel storage tank, the cao reacts with the water to form calcium hydroxide. Calcium hydroxide has a high enough ph to turn the phenolphthalein a vivid purplish-pink color, thus indicating the presence of water.
• paper: calcium oxide is used to regenerate sodium hydroxide from sodium carbonate in the chemical recovery at kraft pulp mills.
• plaster: there is archeological evidence that pre-pottery neolithic b humans used limestone-based plaster for flooring and other uses.such lime-ash floor remained in use until the late nineteenth century.
• chemical or power production: solid sprays or slurries of calcium oxide can be used to remove sulfur dioxide from exhaust streams in a process called flue-gas desulfurization.
• aac block manufacturing
• effluent treatment plant
• road & building construction, paint.