LIMESTONE

lIMESTONE

Limestone is a sedimentary rock primarily composed of calcium carbonate (CaCO₃) in the form of the mineral calcite. With a high CaCO₃ content, this product is classified as high-grade limestone, making it highly suitable for heavy industrial applications such as cement manufacturing, steelmaking flux, production of quicklime, and as a filler in the chemical, paper, and paint industries.

The high purity level ensures excellent chemical stability, good reactivity, and consistent end-product quality.

Chemical Composition (Typical Laboratory Result)

CaCO₃ (Calcium Carbonate) = 95–98%

CaO (Calcium Oxide) = 53–55%

MgO (Magnesium Oxide) = ≤ 1.0%

SiO₂ (Silicon Dioxide) = ≤ 1.5%

Fe₂O₃ (Iron Oxide) = ≤ 0.2%

Al₂O₃ (Aluminum Oxide) = ≤ 0.5%

Loss on Ignition (LOI) = 42–44%

Moisture Content = ≤ 1%

Physical Characteristics

Appearance: White to light cream / light gray
Grain Shape: Granular / crushed
Hardness: 3 (Mohs scale)
Specific Gravity: ±2.70
Bulk Density: 1.4 – 1.6 ton/m³
Size: Customizable (lump 10–50 cm, crushed 0–5 cm, 0–3 cm, powder 200–325 mesh, etc.)

Key Advantages

High purity (CaCO₃ up to 98%)
Low magnesium and iron content
High reactivity when calcined
Bright color with good whiteness
Consistent particle size distribution
Abundant and stable natural supply

Applications

A. Cement Industry

Main raw material for Portland cement production

B. Steel & Metallurgy Industry

Flux to lower melting point and form slag

C. Lime Production (Quicklime & Hydrated Lime)

Primary raw material for producing quicklime and hydrated lime

D. Chemical & Filler Industry

Production of calcium carbide, paper, paint, plastics, rubber, and fertilizer

E. Construction & Environmental

Concrete aggregate, soil acidity neutralizer, wastewater treatment, and flue gas desulfurization (FGD)

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