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Activated Heavy Calcium Carbonate Activated CaCO3

Raw Materials

Natural Dolomite and Treatment Chemicals

Manufactured Process Summary

The natural dolomite is mechanically crushed to manufacture the powder of calcium carbonate. Then, the calcium carbonate is mixed with the appropriate amount of surface coated liquor. After the calcium carbonate is classified by fineness and packaged, it is called activated heavy calcium carbonate or surface treatment heavy calcium carbonate

Product Introduction

The heavy calcium carbonate adopts chemically surface treatment to become activated calcium carbonate. The type of calcium carbonate has better properties of dispersion, reinforcement, and insulation than the commonly heavy calcium carbonate. For the industrial products, it has better fluidity and extrudability during the product processing. It gives the finished product better tear resistance and flex break, or makes other kinds of products achieve the expected properties.

Product Specifications

Property	CS-2200Ｃ	CS-2000Ｃ	CS-1800Ｃ	CS-1600Ｃ	CS-1400Ｃ
Mean Particle Size (µm)	1.3	1.65	2.1	2.6	3.4
Surface Area (cm2/g)	21500	19500	17500	15600	14000
Bulk density (g/cm3)	0.81	0.86	0.91	0.96	1.01
True specific gravity (g/cm3)	2.5~2.7	2.5~2.7	2.5~2.7	2.5~2.7	2.5~2.7
whiteness (%GE)	95	95	95	95	95
All passing (µm)	18	20	24	38	48
Residue on 325 mesh	0.001%	0.01%	0.01%	0.1%	0.5%
Oil absorption (ml/100g)	25	22	17	15	13
Assay of CaCO3	97%	97%	97%	97%	97%
Surfactant coated agent	脂肪酸/偶合剂/滑剂/分散剂
Maximum Moisture	max. 0.4%	max. 0.4%	max. 0.4%	max. 0.6%	max. 0.4%
Insoluble in HCl	max. 2.0%	max. 2.0%	max. 2.0%	max. 2.0%	max. 2.0%
SiO2	max. 1.2%	max. 1.2%	max. 1.2%	max. 1.5%	max. 1.2%
MgO	max. 0.8%	max. 0.8%	max. 0.8%	max. 0.6%	max. 0.8%
Fe2O3	max. 0.3%	max. 0.3%	max. 0.3%	max. 0.3%	max. 0.3%
Al2O3	max. 0.3%	max. 0.3%	max. 0.3%	max. 0.6%	max. 0.3%
Loss on ignition	43±2%	43±2%	43±2%	43±2%	43±2%
pH value	8.3±1	8.3±1	8.3±1	8.3±1	8.3±1

(The above table is provided for reference only )

Scanning Electron Microscope(SEM)

Product characteristics

Modified calcium carbonate.
Low oil absorption.
Better fluidity.
Improvement of dispersion and reinforcement.
Hydrophobic material, i.e. not easy to absorb water to increase insulation.
Users could choose the type according to the applicable fineness, surface area, bulk density, whiteness and surface coated liquor.

Applications

Apply to rubber and plastic industries: Activated nanometer calcium carbonate plays the role of contamination-free reinforced filler in the material, and is commonly applied to the white or transparent products. These products have good aging resistance, insulation, abrasion resistance, anti-fading, enforcement to have better tear resistance and flex break. It is commonly used in tires, shoes, tapes, rubber tubes, electrical wire, sporting goods, and plastic products etc.
Apply to paints: printing ink, synthetic resin paints, glazes, oil-based paints, latex paints, primer paints.
Apply to agriculture and animal husbandry: soil modification, cropper protective agent, the additives of fertilizer or fodder, etc.
Apply to medicine or health-care food: calcium tablets, calcium-supplemental agents, capsules, tablets, the calcareous source of the food, etc.
Apply to articles for daily use：tooth paste, tooth powder, environment-friendly (garbage) bags, etc.

Package

The appearance of the product is white powder, which is packaged in a three-layered kraft sack per twenty five kilograms or a bag per one thousand kilograms.