Burack Mining Corporation South Africa
Varieties of Dolomite Minerals
Dolomite is a naturally occurring, sedimentary carbonate mineral renowned for its unique composition of Calcium Magnesium Carbonate [CaMg(CO₃)₂]. Mined from select high-quality deposits, our dolomite mineral offers exceptional purity, consistent grain size distribution, and optimal physical properties essential for a wide range of industrial and agricultural applications.
Key Features & Specifications:
Composition: Predominantly CaMg(CO₃)₂, typically >95% purity.
Chemistry:
Calcium Oxide (CaO): 30-32%
Magnesium Oxide (MgO): 18-22%
Silica (SiO₂): <1-3% (Low silica content is a key advantage)
Iron (Fe₂O₃): <0.5%
Alumina (Al₂O₃): <0.5%
Appearance: Typically off-white, cream, light grey, or pink crystalline rock. Processed into granules or powder.
Hardness: 3.5-4 on the Mohs scale.
Density: Approximately 2.8 – 2.9 g/cm³.
Neutralizing Value: High acid-neutralizing capacity (comparable to or exceeding pure limestone).
Key Benefits:
Dual Nutrient Source: Provides essential plant nutrients Calcium (Ca) and Magnesium (Mg) in a single, readily available form.
Soil Conditioner: Effectively neutralizes acidic soils, improving pH balance, soil structure, microbial activity, and nutrient availability.
High Purity & Consistency: Guaranteed low levels of deleterious impurities (like silica, iron, alumina) ensure optimal performance in demanding industrial processes.
Cost-Effective: Offers an economical solution for pH adjustment and magnesium supplementation compared to alternatives.
Versatile Physical Forms: Available in various mesh sizes (coarse aggregates to fine powders) to suit specific application requirements.
Refractory Properties: Excellent thermal stability and resistance to basic slags make it valuable in refractories.
Fluxing Agent: Efficiently lowers the melting point of raw materials in iron & steel production and glass manufacturing.
Primary Applications:
Agriculture: Soil amendment for pH correction (liming), source of Mg and Ca for crops and pastures.
Construction:
Aggregate in concrete and asphalt.
Dimension stone (building stone, veneer, tiles).
Manufacture of magnesia cements.
Glass & Ceramics: Essential flux to control melting temperature and viscosity; source of MgO for durability and chemical resistance.
Iron & Steel Production: Sintering plant flux, blast furnace flux, slag conditioner, refractory material.
Environmental:
Flue Gas Desulfurization (FGD) to remove SO₂.
Acid mine drainage (AMD) neutralization.
Water treatment (pH adjustment).
Fillers & Extenders: Used in paints, plastics, rubber, sealants, and adhesives due to its brightness, low oil absorption, and chemical inertness.
Magnesium Metal Production: A primary raw material source.
Animal Feed: Supplement to provide essential Calcium and Magnesium for livestock.
Packaging & Availability:
Bulk: Shipped by truck (dump, pneumatic), railcar, or barge.
Bags: Standard 50 lb (22.7 kg) or 1-ton bulk bags (FIBCs).
Custom Sizing: Available in a wide range of crushed and ground sizes (e.g., coarse rock, chips, granules, 20×50 mesh, 50×100 mesh, 100 mesh, 200 mesh, 325 mesh).
Stock: Consistently maintained for reliable supply.
Why Choose Our Dolomite Mineral?
Consistent Quality: Rigorous quality control from mining through processing ensures product uniformity.
Technical Expertise: Dedicated support to help you select the optimal grade and size for your application.
Sustainable Sourcing: Commitment to responsible mining and environmental stewardship.
Reliable Logistics: Efficient bulk handling and transportation solutions.
Ideal For: Farmers, Soil Scientists, Construction Material Suppliers, Steel Mills, Glass Manufacturers, Foundries, Chemical Processors, Environmental Remediation Companies, Feed Formulators, Paint & Plastic Producers.
Unlock the versatility and performance of high-purity Dolomite Mineral. Contact us today for specifications, pricing, and samples tailored to your specific needs!
