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Technical Guide to Calcium Carbonate Powder (CaCO₃) for Bangladesh Market

Calcium carbonate powder (CaCO₃) is one of the most widely used mineral fillers in industrial production worldwide. In Bangladesh, with the rapid growth of plastic manufacturing, construction, paint, and paper industries, the demand for high-quality calcium carbonate powder is increasing every year.

This technical guide provides a clear overview of calcium carbonate powder types, specifications, applications, and how to choose the right product for Bangladesh manufacturers.

What Is Calcium Carbonate Powder?

Calcium carbonate powder is produced from natural limestone through crushing, grinding, and classification processes. The final product is a fine white powder with high purity, stable chemical composition, and excellent dispersion properties.

Chemical Composition

• CaCO₃ content: ≥ 97%

• Low impurities: MgO, Fe₂O₃, SiO₂

• High whiteness and brightness

These properties make calcium carbonate powder suitable for many industrial applications in Bangladesh.

Coated vs Uncoated Calcium Carbonate Powder

One of the most important technical considerations for buyers in Bangladesh is choosing between coated and uncoated calcium carbonate powder.

Uncoated Calcium Carbonate Powder

Characteristics:

• Natural surface

• Good dispersion in water-based systems

• Cost-effective

Recommended applications in Bangladesh:

• Paint & coatings

• Construction materials

• Paper industry

• Rubber products

Coated Calcium Carbonate Powder

Coated calcium carbonate powder is treated with stearic acid to improve compatibility with polymers.

Advantages:

• Better dispersion in plastic resin

• Improved mechanical strength

• Reduced moisture absorption

Recommended applications:

• PP, PE, PVC plastic products

• Masterbatch production

• Plastic packaging and woven bags

Mesh Size and Its Impact on Production Performance

Mesh size (or particle size in micron) directly affects processing efficiency and product quality.

Common mesh sizes for Bangladesh market:

• 200–400 mesh: Construction, filler applications

• 800–1250 mesh: Paint, rubber, general plastics

• 2500 mesh: High-end plastic and masterbatch

Why Mesh Size Matters

• Finer particles → smoother surface finish

• Better dispersion → improved strength and appearance

• Reduced wear on machinery when particle size is stable

Choosing the correct mesh size helps Bangladesh manufacturers optimize cost and product performance.

Key Applications of Calcium Carbonate Powder in Bangladesh

Plastic Industry

Calcium carbonate powder is widely used as a filler to:

• Reduce raw material cost

• Improve stiffness and dimensional stability

• Enhance processing efficiency

Paint & Coatings

In paint formulations, CaCO₃:

• Improves opacity and coverage

• Enhances brightness

• Controls viscosity

Construction Industry

Used in cement, concrete, and putty to:

• Increase compressive strength

• Improve workability

• Reduce overall production cost

Paper Industry

CaCO₃ powder improves:

• Paper brightness

• Printability

• Surface smoothness

How to Choose the Right Calcium Carbonate Powder for Bangladesh Buyers

When selecting a calcium carbonate powder supplier, Bangladesh manufacturers should consider:

• Stable CaCO₃ content and whiteness

• Consistent mesh size between batches

• Suitable coating for plastic applications

• Reliable supply capacity and export experience

Technical support and customization according to industry needs are also key factors for long-term cooperation.

Why Vietnam Calcium Carbonate Powder Is Suitable for Bangladesh

Vietnam is one of the leading producers of high-quality calcium carbonate powder thanks to:

• Abundant high-purity limestone resources

• Advanced grinding and coating technology

• Competitive pricing and stable supply

Vietnamese calcium carbonate powder is widely exported to Bangladesh and meets the technical requirements of local industries.

Calcium carbonate powder plays a vital role in Bangladesh’s industrial development. Understanding technical factors such as coated vs uncoated types, mesh size, and application requirements helps manufacturers choose the most suitable product.

A reliable calcium carbonate powder supplier not only delivers consistent quality but also provides technical support to optimize production efficiency and cost.

Contact: salesmanager@tankymineral.com.vn
Website: www.tankymineral.com.vn