Calcite Fine Powder
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Calcite Fine Powder factory
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Calcite Fine Powder

Calcium Carbonate (CaCO₃) Content:95.0% - 98.0%
Whiteness:80% - 96%
Fineness (Sieve Residue):200 mesh - 1250 mesh
Particle Size (D50):5 μm - 15 μm (adjustable by mesh)
Moisture Content:≤0.3% - 0.5%
Hydrochloric Acid Insoluble:≤0.1% - 0.3%
pH Value (10% Suspension):8.5 - 10.0
Oil Absorption (DBP Absorption):20 - 35 ml/100g
Fe₂O₃ Content:≤0.08%
200 mesh:≈75 μm
325 mesh:≈45 μm
400 mesh:≈38 μm
600 mesh:≈23 μm
800 mesh:≈18 μm
1000 mesh:≈13 μm
1250 mesh:≈10 μm

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Product Introduction

Ultra-Fine and High-Performance for Advanced Composites

We offer Calcite Fine Powder. This product reflects our pursuit of "ultra-fineness" and "high performance." We use natural high-purity calcite as the raw material. It is processed through dry grinding or wet grinding combined with precision classification technology.

Our factory has six automated production lines with an annual capacity of 300,000 tons. Our R&D team includes nine senior engineers specializing in ultra-fine powder grinding technology. We are not just a supplier-we are a partner in improving the performance of your composite materials. Our Calcite Fine Powder is a high-performance product.

Key Specifications and Superior Quality

We maintain strict quality control throughout the entire process, ensuring stable chemical composition and excellent physical properties. The table below presents our key specifications.

The calcium carbonate content ranges from 95.0% to 98.0%. The whiteness ranges from 80% to 96%. The fineness is adjustable from 200 mesh to 1250 mesh, with a median particle size (D50) of 5 μm to 15 μm. Our Calcite Fine Powder is designed for demanding applications.

Test Items

Test Item	Technical Parameter	Executive Standard	Note
Calcium Carbonate (CaCO₃) Content	95.0% - 98.0%	GB/T 19281-2014	Equivalent CaO is about 53.2%–54.9%
Whiteness	80% - 96%	HG/T 3249.1-2013	≥93% suitable for light-colored products
Fineness (Sieve Residue)	200 mesh - 1250 mesh	GB/T 2910-2009	45 μm or 125 μm sieve residue ≤0.5%
Particle Size (D50)	5 μm - 15 μm (adjustable by mesh)	Laser particle size analyzer	-
Moisture Content	≤0.3% - 0.5%	GB/T 19281-2014	Excess moisture may cause agglomeration
Hydrochloric Acid Insoluble	≤0.1% - 0.3%	GB/T 19281-2014	Premium grade ≤0.1%
pH Value (10% Suspension)	8.5 - 10.0	GB/T 19281-2014	Weakly alkaline
Oil Absorption (DBP Absorption)	20 - 35 ml/100g	HG/T 3249.1-2013	Affects processing flowability; ≤28 is optimal
Fe₂O₃ Content	≤0.08%	Atomic absorption method	Impurity control indicator

Specification (Mesh)

Mesh	Median Particle Size D50 (μm)	Sieve Residue	Typical Application Areas
200 mesh	≈75 μm	125 μm sieve residue ≤0.5%	Feed additives, building material base
325 mesh	≈45 μm	45 μm sieve residue ≤0.5%	Paper filler, artificial marble
400 mesh	≈38 μm	45 μm sieve residue ≤0.3%	Plastic masterbatch, rubber filling
600 mesh	≈23 μm	45 μm sieve residue ≤0.1%	Fireproof materials, PVC pipes
800 mesh	≈18 μm	45 μm sieve residue ≤0.05%	Cable materials, rubber products, primers
1000 mesh	≈13 μm	45 μm sieve residue ≤0.02%	Water-based coatings, inks
1250 mesh	≈10 μm	45 μm sieve residue ≤0.01%	High-grade PVC, PE, coil coatings, paper coating

Wide Applications and Simple Process

Our Calcite Fine Powder is widely used across many industries. It is used in plastics for PVC pipes, profiles, and cable materials. It is used in coatings for interior and exterior paints, as well as industrial primers. It is used in rubber products such as tires and seals, and also in inks, paper, and artificial stone.

We conduct particle size testing on every batch to ensure consistent fineness. With a monthly capacity of 300,000 tons, we can ship standard orders within 3–5 working days after receiving the deposit.

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