Limestone Specifications (Composition) + Example (PDF)

Limestone is a sedimentary rock composed mainly of calcium carbonate that is made up of different ratios of the following chemicals:

• Calcium carbonate (CaCO3)
• Calcium oxide (CaO)
• Magnesium Oxide (MgO)
• Silicon dioxide or Silica (SiO2)
• Aluminum oxide or alumina (Al2O3)
• Iron (III) oxide or hematite (Fe2O3)
• Sulphate (SO3)
• Phosphorus (P2O5)

As mentioned, the main elements in the chemical analysis of Limestone are CaCO3 and CaO, but like other minerals, Limestone contains trace impurities like SiO2, Al2O3, etc.

The most workable amount of SiO2 should be under 1%, and our Limestone has 0.94% of Silica.

Another important point is the L.O.I., which is an abbreviation for Loss of ignition that results from heating a sample of the material to a high temperature. It is also called free moisture. This grade of Limestone has 42.1% L.O.I.

White Limestone:

This particular grade has 92% Whiteness and 88.5% Brightness, and that Whiteness can be up to 97%.these parameters are measured by Elrepho 450X. Detector Elrepho is made to control the production of color, brightness, opacity, yellowness, and whiteness measurements of pulp, paper, and chemicals.

This specification of limestone contains Ry (luminous reflectance factor) and L*, a*, and b* (“Lab” color space), which are defined in the German Standard DIN. It has an additional number that is used in combination with the brightness, which is called the yellowness index. this product can be offered in various sizes of fine, lump, and micronized powder in accordance with our customer requisition.

Limestone wholesale specifications Example:

We, Arij Global Trading Co, have an industrial grade of limestone that is suitable for different industries like paper and pulp, with 98.75% purity of CaCO3 and 55.3% of CaO.

Example of Raw Limestone Wholesale Supplier Industrial Grade Specification (Download PDF version):