Description

Dolomite is a naturally occurring calcium magnesium carbonate mineral with the chemical formula CaMg(CO3)2. It serves as a vital industrial mineral and chemical feedstock, prized for its dual-source composition of calcium and magnesium oxides. This material is essential for manufacturers in the construction, agriculture, steelmaking, glass, and environmental remediation sectors, providing a cost-effective source of magnesia and acting as a pH buffer and fluxing agent.

Application

• Construction Aggregate & Cement: Used as a high-quality aggregate in concrete and asphalt, and as a raw material in the production of Portland cement and magnesium-based cements.
• Soil Conditioner & Agricultural Lime: Applied to agricultural land to neutralize acidic soils, supply essential magnesium and calcium nutrients, and improve crop yield.
• Steel Production: Employed as a fluxing agent in iron and steel furnaces to remove impurities, protect refractory linings, and control slag viscosity.
• Glass & Ceramics Manufacturing: Acts as a source of magnesium oxide and calcium oxide to improve the thermal and chemical durability of glass and ceramic products.
• Flue Gas Desulfurization (FGD): Used in scrubbing systems to remove sulfur dioxide (SO2) from industrial exhaust gases, aiding in environmental compliance.
• Fillers & Extenders: Processed into fine powders (whiting) used as functional fillers in plastics, paints, coatings, and rubber to modify properties and reduce costs.
• Water Treatment: Utilized to adjust pH and remove impurities in both industrial wastewater and drinking water treatment processes.
• Animal Feed Supplement: Incorporated into livestock and poultry feed as a dietary source of calcium and magnesium for bone development and metabolic functions.

Basic Information

Product Name	Dolomite
CAS No.	16389-88-1
Molecular Formula	CaMg(CO3)2
Molecular Weight	184.40 g/mol
Synonyms	Calcium Magnesium Carbonate; Dolomitic Limestone; Dolostone; Magnesium Calcium Carbonate; CaMg(CO3)2; Pearlspar; Bitterspar; Taraspite
EINECS	240-440-6

Quality Control

Our Dolomite products are sourced and processed under strict quality protocols to ensure batch-to-batch consistency and performance. We offer various grades—including industrial, agricultural, and filler grades—tailored to specific application requirements. Quality is verified through parameters such as chemical composition (CaO, MgO content), particle size distribution, brightness, and acid neutralization value. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the material away from strong acids. Although not highly hygroscopic, prolonged exposure to high humidity should be avoided to prevent caking. Store separately from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (XRD)	Complies
Calcium Oxide (CaO) Content	30 - 32 %
Magnesium Oxide (MgO) Content	19 - 22 %
Acid Insolubles	< 2.0 %
Loss on Ignition (LOI)	44 - 47 %
Particle Size (as per grade)	Contact for details
Heavy Metals (as Pb)	< 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.