Calcium Oxide Micron Powder (CaO, 99.95+%, < 5 µm)
Technical Specifications:
- Chemical Formula: CaO
- Purity: 99.95+% (high purity)
- Particle Size: < 5 µm (microns)
- Appearance: White to off-white powder
- Density: Approximately 3.34 g/cm³
- Melting Point: 2,572°C (4,662°F)
- Boiling Point: Sublimes at high temperatures (does not have a definitive boiling point under normal pressure)
- Molecular Weight: 56.08 g/mol
- Solubility: Reacts with water to form calcium hydroxide (Ca(OH)₂), but insoluble in water in its pure form.
- Crystal Structure: Cubic
- Refractive Index: ~1.6
Applications:
- Industrial & Environmental Applications:
- Calcium Oxide is widely used as a fluxing agent in the production of steel and other metals. It helps to remove impurities from metal ores by reacting with acidic impurities to form slags, which can then be separated from the metal.
- It is also used in the manufacturing of cement, where it is a key component in the production of quicklime (CaO), which is then mixed with other substances to make concrete.
- Desulfurization of Gases:
- Calcium Oxide is used in the desulfurization of gases in industrial settings, particularly in power plants and waste treatment facilities. It reacts with sulfur dioxide (SO₂) to form calcium sulfite (CaSO₃), reducing harmful emissions and making industrial processes more environmentally friendly.
- Carbon Dioxide Absorption:
- Calcium Oxide is employed in the capture of carbon dioxide (CO₂) in processes designed to reduce CO₂ emissions. It reacts with CO₂ to form calcium carbonate (CaCO₃). This is particularly useful in carbon capture and storage (CCS) technologies.
- Water Treatment:
- Calcium Oxide is used in water treatment plants to adjust the pH of water. It is commonly employed to neutralize acidity in drinking water, wastewater treatment, and other industrial water treatments.
- It also helps in the removal of phosphates and other contaminants, as well as in softening water by precipitating calcium salts.
- Food Industry:
- Calcium Oxide is used in certain food processing applications, such as in the production of sugar from sugarcane and sugar beets. It is employed to clarify juices and also acts as an acidulant in various food preparations.
- It is used in the lime cycle for the production of limewater (a solution of calcium hydroxide) used in certain foods and beverages.
- Agricultural Use:
- Calcium Oxide is applied in agriculture to correct soil acidity. It is used as lime in lime-based soil amendments to improve the fertility of acidic soils.
- It is also used in the production of fertilizers, particularly those that add calcium to the soil to improve plant growth and disease resistance.
- Chemical Synthesis:
- Calcium Oxide serves as an important reagent in chemical synthesis, especially in the production of calcium hydroxide (slaked lime), calcium carbide, and other calcium-based compounds.
- It is used in various organic and inorganic chemical reactions, where it acts as a strong base or as a dehydrating agent in reactions.
- Pulp and Paper Industry:
- Calcium Oxide is used in the pulp and paper industry in the Kraft process, which is the most widely used method for producing paper from wood. It is involved in the recycling of sodium hydroxide and the regeneration of sodium carbonate in the process.
- Heat Treatment:
- Calcium Oxide is employed as a refractory material in the heat treatment of metals, ceramics, and other materials. It is used in high-temperature processes due to its ability to withstand extreme temperatures without degrading.
- Production of Calcium-based Products:
- Calcium Oxide is used in the production of various calcium-based products, such as calcium stearate, calcium carbide, and calcium acetate. These compounds find applications in plastics, lubricants, and as intermediates in chemical processes.
- Glass Manufacturing:
- Calcium Oxide is used in the glass industry to make optical glass, specialty glass, and other types of glass products. It helps to improve the workability and melting characteristics of glass during production.
- Soil Stabilization:
- Calcium Oxide is used for soil stabilization in construction projects. It improves the strength and durability of soils used in road building, foundations, and earthworks, helping to create stable surfaces and structures.
Calcium Oxide Micron Powder (CaO, 99.95+%, < 5 µm) is a highly reactive and versatile compound with diverse industrial, agricultural, and environmental applications. Its small particle size and high purity make it particularly suitable for use in processes that require precision and efficiency, such as chemical synthesis, flue gas treatment, water purification, and construction.
