Description

Limestone, Dolomitic is a naturally occurring sedimentary rock composed primarily of calcium magnesium carbonate (CaMg(CO₃)₂). This mineral is a critical industrial raw material valued for its dual-source alkalinity and magnesium content. It is essential for manufacturers in the construction, agriculture, steelmaking, and environmental remediation sectors seeking a cost-effective and versatile mineral additive. The product is supplied under CAS No. 308068-13-5.

Application

• Construction Materials: As a key aggregate in concrete and asphalt, and as the primary raw material for producing Portland cement and lime.
• Soil Conditioner & Agricultural Lime: To neutralize acidic soils, supply essential calcium and magnesium nutrients, and improve crop yield.
• Flux Agent in Steel Production: Used in blast furnaces and basic oxygen furnaces to remove impurities (slag formation) and protect refractory linings.
• Flue Gas Desulfurization (FGD): A reagent of choice in power plants and industrial boilers to scrub sulfur dioxide (SO₂) from emissions.
• Glass & Ceramics Manufacturing: Provides calcium and magnesium oxides which act as stabilizers and fluxing agents in batch formulations.
• Water & Wastewater Treatment: Used for pH adjustment, precipitation of metals, and as a filter medium.
• Fillers & Extenders: In products such as paints, plastics, rubber, and animal feed to modify properties and reduce costs.

Basic Information

Product Name	Limestone, Dolomitic
CAS No.	308068-13-5
Molecular Formula	CaMg(CO₃)₂
Molecular Weight	184.40 g/mol
Synonyms	Dolomite; Dolomitic Limestone; Calcium Magnesium Carbonate; Dolostone; Bitterspar; Pearlspar; Taraspite; Magnesium Calcium Carbonate
EINECS	Contact for details

Quality Control

Our Dolomitic Limestone is sourced and processed under a stringent quality management system. Product specifications for key parameters such as chemical composition (CaO, MgO), particle size distribution, and brightness are rigorously tested. Certificates of Analysis (COA) are provided with each shipment to ensure batch-to-batch consistency and compliance with your technical requirements.

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 away from incompatible materials such as strong acids. Protect from excessive moisture to prevent caking.

Specification

Item	Specification
Identification (XRD)	Complies
Calcium Oxide (CaO) Content	≥ 30%
Magnesium Oxide (MgO) Content	≥ 20%
Acid Insolubles	≤ 3.0%
Loss on Ignition (LOI)	45 - 47%
Particle Size (Passing 200 mesh)	≥ 95%
Brightness (GE)	≥ 90%

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