Dolomite

Industrial Product Profile

Product Overview

Dolomite is a naturally occurring calcium magnesium carbonate mineral widely used across steel, glass, ceramics, agriculture, construction, paints, rubber, plastics, fertilizers, water treatment, and refractory industries. Due to its high purity, excellent whiteness, controlled chemistry, and superior physical properties, dolomite serves as an essential industrial raw material.

Chemical Formula

CaMg(CO₃)₂

Physical Properties

Property & Specification

Appearance White, Off White, Cream
Hardness 3.5–4 Mohs
Specific Gravity 2.80–2.90
Bulk Density 1.6–1.9 g/cm³
Moisture <0.5%
pH Neutral to Slightly Alkaline

Product Features

 High Calcium & Magnesium Content
 Excellent Whiteness
 High Bulk Density
 Low Silica Content
 Low Iron Content
 Excellent Dispersion
 Good Wettability
 Low Reactivity
 High Plasticizer Absorption
 High Specific Gravity
 Uniform Particle Size
 Chemically Stable
 Export Quality Material

Available Forms

Dolomite Lumps

 20–40 mm
 30–80 mm
 40–80 mm
 40–100 mm
 50–100 mm
 100–200 mm
 200–300 mm

Dolomite Powder

Mesh Size Micron

100 Mesh 150 μm
200 Mesh 75 μm
250 Mesh 63 μm
300 Mesh 45 μm
400 Mesh 38 μm
500 Mesh 25 μm
600 Mesh 20 μm
800 Mesh 15 μm
1250 Mesh 10 μm

Customized particle sizes available upon request.

Grade A – Steel & Refractory Grade

Parameter & Specification

CaCO₃ 54–58%
MgCO₃ 40–45%
CaO 30–32%
MgO 20–22%
SiO₂ ≤1.5%
Fe₂O₃ ≤0.30%
Whiteness Natural

Applications

 Steel Plants
 Iron & Steel Flux
 Sinter Plants
 Refractory Bricks
 Lime Manufacturing
 Furnace Linings

Grade B – Glass & Ceramic Grade

Parameter & Specification

CaCO₃ 55–58%
MgCO₃ 40–43%
SiO₂ ≤0.80%
Fe₂O₃ ≤0.15%
Al₂O₃ ≤0.30%
Whiteness High

Applications

 Float Glass
 Container Glass
 Ceramic Tiles
 Sanitary Ware
 Porcelain
 Ceramic Glazes

Grade C – Paint, Plastic & Polymer Grade

Parameter & Specification

CaCO₃ 54–57%
MgCO₃ 40–44%
Brightness 92–96%
Oil Absorption Controlled
Moisture <0.3%
Particle Size As Required

Applications

 Decorative Paints
 Industrial Coatings
 PVC Compounds
 Masterbatch
 Plastic Fillers
 Rubber Compounds
 Adhesives
 Sealants

Grade D – Agriculture Grade

Parameter & Specification

CaCO₃ + MgCO₃ >94%
Magnesium High
Moisture <1%

Applications

 Soil Conditioner
 Agricultural Lime
 Fertilizer Blending
 Animal Feed Mineral Supplement

Grade E – Construction Grade

Parameter & Specification

CaCO₃ Standard
MgCO₃ Standard
Parameter Specification
Size Customer Requirement

Applications

 Cement Manufacturing
 Asphalt Mixes
 Construction Aggregates
 Ready Mix Concrete
 Road Construction