Lime is used extensively across various industries due to its chemical versatility, with major applications including steel production, environmental remediation, construction, chemical manufacturing, paper and pulp processing, water treatment, agriculture, and glass making[1][2][3][4][5].
- Steel Manufacturing: Lime is used to remove impurities during the basic oxygen and electric arc furnace processes, making it the largest single consumer of lime[1][5].
- Environmental Applications: Lime is vital for complying with air, water, and waste regulations. It’s used in flue gas desulfurization to neutralize acidic gases (like sulfur dioxide), in wastewater and drinking water treatment to adjust pH, and in solid waste management[2][4][5].
- Construction: Lime stabilizes soil for roads, dams, and airfields, and is a key ingredient in mortar and plaster. It improves asphalt performance and is used for building foundations[3][5].
- Chemical Manufacturing: Hydrated lime is employed for pH control, neutralization, and synthesis of other chemicals. It is crucial for producing various calcium compounds, neutralizing acids, and as a reagent in chemical processes[2][7].
- Pulp and Paper: Used in the manufacture and bleaching of pulp, lime enhances paper quality and is essential in recycling processes[3][7].
- Mining and Metals: Lime is utilized in non-ferrous metal refining (e.g., copper, gold, zinc) to treat ore, manage effluents, and aid dewatering and filtration[1].
- Agricultural Uses: Lime serves as a soil amendment to neutralize soil acidity and as a calcium source for plants[4].
- Glass Manufacturing: Both lime and dolime function as fluxing and stabilizing agents, improving furnace efficiency and determining glass properties[1].
- Leather Processing: Used for dehairing and cleaning hides prior to tanning[3].
- Pharmaceuticals and Personal Care: Lime-derived products such as precipitated calcium carbonate (PCC) are found in medicines (e.g., antacids), dietary supplements, and personal care items like toothpaste[1][7].
- Other Industrial and Niche Uses: Includes the production of chemicals like calcium hypochlorite for bleaching and disinfection, manufacturing of magnesium oxide, making de-icing agents (calcium magnesium acetate), purification of brines, CO₂ absorption, use as a desiccant, and more[7].
References
- [1] Applications of Lime – MPALIME
- [2] Hydrated Lime Uses in Chemical Industry – Elchemy
- [3] Diverse Industrial Applications of Lime – Sigma Minerals
- [4] Lime – a time-tested chemical – Science Learning Hub
- [5] Uses of Lime – National Lime Association
- [7] Other Uses of Lime – National Lime Association