Technical Guide to 400 Mesh Dolomite Powder: Composition, Particle Fineness & Uses

Kiran Minichem, a reputed Wholesale Supplier and Wholesaler of mineral powders, specializes in delivering high-quality 400 Mesh Dolomite Powder that meets stringent industrial standards. With advanced processing systems and strict quality control, the company ensures consistent particle size, superior whiteness, and low silica content — making it ideal for precision applications.

Understanding Dolomite and Its Chemical Structure

Dolomite (CaMg(CO₃)₂) is a double carbonate of calcium and magnesium. The ratio of calcium carbonate to magnesium carbonate determines its quality and suitability for industrial use. In its powdered form, the mineral exhibits excellent dispersion, chemical inertness, and controlled hardness.

For 400 Mesh Dolomite Powder, the mesh size represents the fineness — meaning that the particles pass through a 400 openings-per-inch screen. This ultra-fine consistency allows even distribution in mixtures, providing superior results across varied industrial processes.

Key Characteristics of 400 Mesh Dolomite Powder

The 400 mesh grade of Dolomite Powder is considered a premium quality filler material due to its micro-fineness and excellent physical attributes. Below are the primary features that distinguish it:

• Mesh Size: 400 mesh (fine particle size for high precision applications)
• Whiteness: Typically above 95% for better reflectivity in paints and coatings
• Hardness (Mohs Scale): 3.5 to 4 – suitable for polishing and as a mild abrasive
• Specific Gravity: Approximately 2.85
• Moisture Content: Below 0.2% ensuring stability in storage and mixing
• Chemical Composition:

• CaCO₃ (Calcium Carbonate): 54–56%
• MgCO₃ (Magnesium Carbonate): 44–46%
• SiO₂ (Silica): < 0.5%
• Fe₂O₃ (Iron Oxide): < 0.1%

These balanced properties make 400 Mesh Dolomite Powder ideal for industries where fine consistency and purity define product performance.

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Processing and Quality Control

At Kiran Minichem, every batch of Dolomite undergoes a multi-stage refining and micronizing process. The procedure involves:

1. Raw Material Selection:
   Carefully sourced Dolomite stones from high-purity deposits.
2. Crushing and Grinding:
   Mechanical crushers reduce the size of raw minerals into granules suitable for fine milling.
3. Micronization:
   Jet mills and ball mills refine the powder to the 400 mesh level, ensuring uniformity in particle size.
4. Screening and Classification:
   Precision sieves guarantee accurate mesh grading.
5. Quality Testing:
   Each batch undergoes chemical and physical tests for purity, brightness, pH value, and mesh consistency.

This meticulous process guarantees that every shipment from Kiran Minichem meets international standards of industrial minerals.

Applications of 400 Mesh Dolomite Powder

The versatility of 400 Mesh Dolomite Powder makes it suitable for a wide array of applications across multiple sectors. Some of its most significant uses include:

1. Paints and Coatings

• Acts as a filler providing high whiteness and opacity.
• Improves paint smoothness, dispersion, and weather resistance.
• Enhances the gloss level and durability of surface coatings.

2. Plastics and Polymers

• Used as a functional filler to improve rigidity and dimensional stability.
• Reduces production cost without compromising on quality.
• Enhances mechanical strength and processing efficiency.

3. Rubber Industry

• Provides excellent reinforcement properties to rubber compounds.
• Improves hardness and resistance to deformation under pressure.
• Adds to wear resistance, especially in automotive applications.

4. Glass Manufacturing

• Acts as a fluxing agent, reducing melting temperature.
• Improves transparency and chemical durability of glass products.

5. Ceramics

• Enhances vitrification and glaze texture.
• Used to control thermal expansion in ceramic tiles and sanitary ware.

6. Construction and Cement

• Used as an additive in white cement and concrete mixtures.
• Increases bonding and reduces shrinkage during curing.

7. Agriculture and Soil Treatment

• Serves as a pH neutralizer and magnesium supplement.
• Improves nutrient absorption in acidic soils.

Technical Advantages of 400 Mesh Dolomite Powder

The ultra-fine particle size of 400 Mesh Dolomite Powder offers multiple performance benefits that coarse grades cannot achieve:

• Enhanced Surface Finish: Improves gloss and texture uniformity.
• Better Dispersion: Ensures even mixing with resins and binders.
• Low Oil Absorption: Reduces material consumption in formulations.
• High Thermal Stability: Maintains structure under high-temperature conditions.
• Chemical Inertness: Compatible with a variety of industrial chemicals.
• Eco-Friendly: 100% natural and non-toxic mineral material.

Kiran Minichem – Trusted Wholesale Supplier and Wholesaler

With years of experience in the mineral industry, Kiran Minichem has established itself as a leading Wholesale Supplier and Wholesaler of 400 Mesh Dolomite Powder in India. The company focuses on delivering consistent quality and technical excellence across every product.

• Advanced infrastructure for grinding and micronization.
• In-house quality control laboratories.
• Customizable packing options as per industrial requirements.
• Timely delivery and competitive pricing.

Their commitment to quality and customer satisfaction makes Kiran Minichem a trusted partner for various industries including paints, ceramics, and plastics.

Technical Data Sheet (Typical Analysis)

Packaging and Supply Information

Kiran Minichem ensures convenient packaging for industrial use.

• Available Pack Sizes: 25 kg, 50 kg, and 1-ton jumbo bags.
• Packaging Type: HDPE laminated bags with inner liners.
• Supply Capacity: Bulk orders with consistent monthly dispatch.
• Storage Advice: Keep in a dry, covered place away from moisture.

Why Choose Kiran Minichem for 400 Mesh Dolomite Powder?

• Precision-micronized Dolomite with consistent particle size.
• Highly reliable as an industrial-grade filler.
• Environmentally sustainable and economically efficient.
• On-time supply and flexible shipping solutions.
• Technical assistance and material documentation support.

FAQs About:

Q1. What does 400 mesh mean in Dolomite Powder?
It represents the fineness level of the powder, meaning particles pass through a 400 openings-per-inch sieve, ensuring very fine and consistent granulation.

Q2. Is 400 Mesh Dolomite suitable for plastics and rubber?
Yes, its micro-fine nature ensures smooth dispersion and improved physical strength in plastic and rubber formulations.

Q3. How is Kiran Minichem’s Dolomite Powder different from regular grades?
It offers higher brightness, lower silica content, and guaranteed uniformity — qualities ensured through strict quality control and precision grinding.

Q4. Can it be used in water-based paints?
Absolutely. The powder’s low oil absorption and chemical inertness make it ideal for both solvent-based and water-based paint systems.

Q5. What industries use 400 Mesh Dolomite Powder the most?
Paints, plastics, ceramics, glass, rubber, and agriculture sectors are major users.