High-calcium oxide lumps (CaO 85%–90%) produced by calcining Rajasthan's finest limestone. Fast-reacting, consistent purity. Used in steel manufacturing, paper & pulp, sugar, and chemical industries, supplied pan-India from Jodhpur.
Quick Lime (Calcium Oxide, CaO) is produced by calcining high-purity limestone at temperatures above 900°C in kilns. The result is hard, irregular calcium oxide lumps with high reactivity, known as Calcined Lime or Burnt Lime.
Shreenath Metchem has produced Quick Lime from Rajasthan's high-calcium limestone since 1988. Our calcined lime consistently achieves 85%–90% CaO content with low MgO (≤1.5%) and low SiO₂ (≤1.5%), making it suitable for demanding applications in steel, paper, sugar, and chemical synthesis. Available in both lump and powder form.
Supplied as flux to BOF and EAF furnaces to remove sulphur, phosphorus, and silica from molten metal and control slag basicity. One of the largest-volume lime applications in Indian industry.
At steelmaking temperatures, quick lime combines with impurities in the melt to form slag, which floats on the molten metal and is removed. CaO 85%–90% with low MgO ensures clean, predictable slag chemistry. Consistent lump size enables controlled charge rates, reducing handling cost per heat and supporting stable furnace productivity.
Applied to weak or clay-heavy subgrade soils for permanent stabilisation before road and runway construction. Eliminates costly excavation of poor foundation material on large infrastructure projects.
Quick lime reacts exothermically with soil moisture, drying the material and improving workability. It then reacts with clay minerals through cation exchange and pozzolanic action, permanently increasing load-bearing capacity. This reduces the required pavement thickness and removes the need for deep excavation and replacement of weak foundation soils on highway and runway projects.
A key raw material for bleaching powder, calcium carbide, PVC stabilisers, and other industrial chemicals. Lime purity and reactivity directly determine output quality across these manufacturing processes.
High-purity quick lime (85%–90% CaO) is required in chemical synthesis. Even minor silica or magnesia contamination affects reaction yield and product quality in downstream processes. We supply low-impurity quick lime with a consistent CaO assay for reliable performance in both batch and continuous chemical manufacturing operations.
Used as primary feedstock, fused with coke in electric arc furnaces to produce calcium carbide for acetylene generation and PVC manufacturing. Lump size uniformity and CaO purity are both critical in this process.
The process requires CaO 85%–90% with minimal silica and magnesia to limit slag formation. Consistent lump size determines how the charge packs in the furnace, which governs heat distribution and the yield of calcium carbide produced per unit of electrical energy consumed.
Slaked on-site to produce fresh, high-reactivity lime slurry for pH correction, water softening, and heavy metal removal in large industrial and municipal treatment plants.
On-site slaking produces freshly formed Ca(OH)₂ with higher surface area and reactivity than pre-packaged hydrated lime, resulting in more efficient heavy metal precipitation. Quick lime is also more economical to transport and store per unit of available Ca(OH)₂ content, reducing total reagent cost for high-volume treatment plants.
Slaked on-site to produce milk of lime, dosed into raw sugarcane juice during defecation to remove non-sugar impurities and clarify the juice before crystallisation.
Fresh milk of lime produced on-site is more reactive and effective for juice clarification than pre-made hydrated lime. In defecation, it raises juice pH to 10-11, causing proteins and colloidal impurities to coagulate and settle. Lime purity governs the clarity of clarified juice and the colour and whiteness of the finished sugar.
Used in the kraft pulp chemical recovery cycle, where it is slaked to Ca(OH)₂ to causticise spent cooking liquor back into active white liquor for reuse.
Ca(OH)₂ reacts with sodium carbonate in spent green liquor to regenerate sodium hydroxide for pulp cooking. The lime mud by-product is calcined back to quick lime in a recovery kiln, completing the cycle. Consistent CaO content maintains causticising efficiency and minimises make-up lime required per tonne of pulp produced.
Used to control pH in ore flotation circuits and manage cyanide-bearing wastewater at gold, silver, and base metal mining operations across India.
In sulphide ore flotation, precise pH control governs mineral selectivity. Quick lime is the most economical reagent for large-volume pH management in this application. It also maintains the alkaline conditions required to prevent HCN gas evolution during cyanide treatment, ensuring safe and compliant plant operation.
Slaked on-site to produce reactive hydrated lime for injection into flue gas scrubbing systems, removing SO₂ and other acid gases from power plant and industrial stack emissions.
On-site slaking produces freshly formed Ca(OH)₂ with higher surface area and reactivity than pre-packaged hydrated lime, resulting in better acid gas capture per kilogram of reagent. Quick lime also offers a logistical advantage, with higher available Ca(OH)₂ per tonne than pre-hydrated lime, reducing transport cost for large-scale continuous operations.
Used for lime mortar, plaster, and whitewash in construction. Also slaked on-site for soil stabilisation under building foundations and for waterproofing applications.
Quick lime is slaked with water on-site to produce fresh Ca(OH)₂ for lime mortar and plaster that bonds well with brick and stone. Freshly slaked lime produces a more reactive putty than bagged hydrated lime, giving better workability and bond strength. In foundation work, it is mixed into weak or expansive soils to permanently increase load-bearing capacity before construction begins.
Send us your requirements and we'll respond within 1 business day.
CaO 85%–90% with low impurities. Manufactured near Jodhpur since 1988. Contact us for pricing and availability.