Quicklime (CaO) Supplier & Exporter

Q: What CaO purity is available in your quicklime?

Standard Mesh 70 grade runs 88-90% CaO, fine Mesh 170 grade runs 90-92% CaO, and the high-reactivity milled Super-90 grade guarantees a minimum 85% active CaO with 88% total CaO. Each shipment is covered by a batch-specific Certificate of Analysis.

Q: Which quicklime grade suits steelmaking?

Steel mills typically use the Mesh 70 standard grade as a converter and ladle flux because the coarser particle size resists dusting during charging. Where fast slag formation is required, the high-reactivity milled Super-90 grade is preferred for its sub-5-minute slaking response.

Q: How should quicklime be stored?

Store in a dry, covered area away from moisture and humidity. Quicklime reacts exothermically with water, so bags must be kept sealed and off the ground. Under proper storage conditions shelf life is up to 2 years.

Q: What packaging is available for quicklime?

25 kg 3-ply laminated PP bags, 1-1.5 MT woven jumbo bags, or bulk loading. Moisture-proof polyethylene lining is available on request for humid destinations and long sea transit.

Q: What is the minimum order quantity for quicklime?

One 20 ft container, approximately 25 MT, for bagged quicklime. Bulk vessel shipments start at 500 MT. Trial quantities can be arranged for qualification testing.

CaO Calcium Oxide · 88–92%

High-calcium burnt lime produced by calcining limestone, supplied in three standard grades — Mesh 70, Mesh 170 and high-reactivity milled Super-90 — for steelmaking flux, flue-gas desulfurization, water treatment, soil stabilization and chemical manufacturing. Batch-specific Certificate of Analysis issued per shipment.

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Bulk quicklime powder (calcium oxide, CaO) for steelmaking flux and water treatment — B2B export supplier Raivaco

CaO ≥ 88%

Physical Properties

Formula

CaO

Molecular Weight

56.08 g/mol

Specific Gravity

3.2 – 3.4

Bulk Density

700–1200 kg/m³

11 – 12

Solubility

1330 mg/L

Synonyms: Quicklime, Unslaked Lime, Industrial Lime, Burnt Lime, Calcined Limestone · White powder / granular.

Grades & Chemical Analysis

Three quicklime grades to match your process — from coarse standard lime to fast-slaking milled powder. Select a grade to view its full analysis; every shipment includes a certificate of analysis.

Standard Grade — Coarse, general-purpose

Mesh 70

CaO 88 – 90%

Particle Size: ≤ 2 mm (No.10–100)
CaO: 88 – 90%
CaCO₃: 3 – 6%
Free CaO: < 1.5%
MgO: < 0.5%
SiO₂: < 0.7%
Al₂O₃: < 0.5%
Fe₂O₃: < 0.2%
Na₂O / K₂O: < 0.1 / 0.1%
L.O.I.: < 3%

Also across grades: P₂O₅ < 0.03%, MnO < 0.02–0.5%, SO₃ trace. Values are typical specification ranges; a batch-specific CoA is issued per shipment.

Bespoke Production

Don’t see the grade you need?

If none of the grades above matches your target chemistry, fineness, or packaging, tell us your requirements — we produce custom quicklime grades to your exact specification.

Request a Custom Grade

Applications

Quicklime is a core reagent across metallurgy, environment, and process industries.

Steelmaking Flux

Slag formation and impurity removal in BOF & EAF.

Water & Wastewater Treatment

pH correction, softening and sludge conditioning.

Flue-Gas Desulfurization

SO₂ capture in power and industrial plants.

Soil & Ground Stabilization

Subgrade drying and load-bearing improvement.

Sugar Refining

Milk-of-lime for juice purification.

Construction & AAC Blocks

Autoclaved aerated concrete and mortars.

Chemical Manufacturing

Carbide, precipitated CaCO₃ and calcium salts.

Pulp & Paper

Causticizing in the kraft recovery cycle.

Leather Processing

Liming and unhairing of hides.

Packaging, Logistics & Trading Terms

How we package, certify and ship bulk quicklime. Terms can be adapted by agreement — tell us what your operation needs.

Minimum Order Quantity: 1 × 20 ft container (approx. 25 MT) bagged. 500 MT minimum for bulk vessel. Trial quantities available for qualification.
Packaging: 25 kg 3-ply laminated PP bags · 1–1.5 MT woven jumbo bags · bulk. Moisture-proof PE lining on request — recommended for humid destinations.
Incoterms & Loading Ports: EXW, FOB, CFR, CIF (Incoterms® 2020). Standard loading Bandar Abbas / Bandar Imam Khomeini; other ports by arrangement.
Quality Certification: Batch-specific CoA with every shipment covering CaO, CaCO₃, LOI and sieve residue. SGS / Bureau Veritas inspection at buyer's cost.
Lead Time: 7–14 days for standard grades after order confirmation; 15–25 days for custom-milled or specially packed material.
Storage & Shelf Life: Keep dry and covered, away from moisture — quicklime reacts exothermically with water. Shelf life up to 2 years when stored correctly.

Quicklime Technical Data Sheet Full analysis, all three grades · PDF, 6 pages

Ready to quote

Send us your grade, tonnage, destination port and packaging and we will return a firm FOB/CFR/CIF price with lead time.

Request a Quicklime Quote

Quicklime — Frequently Asked Questions

What CaO purity is available in your quicklime?

Standard Mesh 70 grade runs 88–90% CaO, fine Mesh 170 grade runs 90–92% CaO, and the high-reactivity milled Super-90 grade guarantees a minimum 85% active CaO with 88% total CaO. Every shipment is covered by a batch-specific Certificate of Analysis.

Which quicklime grade suits steelmaking?

Steel mills typically use the Mesh 70 standard grade as a converter and ladle flux, because the coarser particle size resists dusting during charging. Where fast slag formation matters, the high-reactivity milled Super-90 grade is preferred for its sub-5-minute slaking response and 70°C peak temperature.

How should quicklime be stored?

Store in a dry, covered area away from moisture and humidity. Quicklime reacts exothermically with water, so bags must be kept sealed and off the ground. Under proper storage conditions shelf life is up to 2 years. For humid destinations we recommend moisture-proof PE-lined bags.

What packaging is available for quicklime?

25 kg 3-ply laminated PP bags, 1–1.5 MT woven jumbo bags, or bulk loading. Moisture-proof polyethylene lining is available on request for humid destinations and long sea transit.

What is the minimum order quantity for quicklime?

One 20 ft container, approximately 25 MT, for bagged quicklime. Bulk vessel shipments start at 500 MT. Trial quantities can be arranged so you can qualify the material before a full order.

Do you supply hydrated lime as well?

Yes. If your process needs a stable, pre-slaked product, see our hydrated lime (Ca(OH)₂) grades — available from economy construction grade up to food and sugar-refining ultra-pure grade.

Related Lime Products

Hydrated Lime (Ca(OH)₂) grades Pre-slaked calcium hydroxide, 88–96.5%, five grades including food & sugar. All lime products & trade terms Compare quicklime and hydrated lime, MOQ, Incoterms and packaging.