Coating grade light calcium carbonate

The company's products are widely used in paper, rubber, plastics, coatings, building materials and other fields, but also according to customer requirements, the production of customer demand products. The company uses the advantages of local high-quality limestone and water resources to produce "Shiyuan Brand" calcium hydroxide and calcium oxide, dominated by special low-lead calcium hydroxide, which is mainly used in medicine, food industry, sewage treatment, acidic water neutralization treatment, flue gas desulfurization, garbage incineration, coatings, building materials, leather and other fields.

Classification: Products

Keywords: nano calcium light calcium carbonate calcium hydroxide calcium oxide

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Product Details

1. Appearance and properties: odorless, tasteless white powder or colorless crystal.

2. Melting point (℃): 825 (decomposition)

3. Relative density (water = 1): 2.70-2.95

4, solubility: insoluble in water and alcohol, soluble in acid, while releasing carbon dioxide, exothermic reaction. Also dissolved in ammonium chloride solution. Stable in air, with slight moisture absorption capacity. It has better hiding power.

5. Sample detection index:

Sample Name	Industrial precipitated calcium carbonate	Sample delivery date	2016-11-13
Detection basis	HG/T2226-2010	Test Items	full inspection
Trademark	cloth stone	Production batch number	20161113
Project		Indicators	Test Results
		HG/T2226-2010
Appearance		White powder	Qualified
Calcium carbonate (CaCO3) content%>=		97.0	98.73
PH(100g/L suspension)		9.0-10.5	10.1
Volatile content%<= 105 degrees Celsius		0.5	0.19
Content of insoluble matter in hydrochloric acid%<=		0.2	0.1
Sedimentation volume ml/g >=		2.4	2.8
Iron (Fe) content%<=		0.08	0.035
Manganese (Mn) content%<=		0.008	0.004
Whiteness> =		92	95.2
Screen residue: 125um %<=		0.005	0
Screen residue: 45um %<=		0.4	0.14
Test conclusion: The tested product meets HG/T2226-2010 standard Product qualified.

In the coating, calcium carbonate can be used as a white pigment, play a skeleton role; in the coating industry can be used as an extender pigment. The incorporation of calcium carbonate can enhance the deposition and penetration of the primer to the surface of the base layer. At the same time, heavy calcium carbonate (heavy calcium powder, heavy calcium) is the main body of putty filler. In thick paint, calcium carbonate can thicken and thicken the coating, and play a filling and leveling role. Therefore, heavy calcium carbonate and light calcium carbonate are usually added in thick paint, and the addition of heavy calcium carbonate (heavy calcium powder, heavy calcium) can reach 24.6%~ 78.5%. In the top coat, that is, in the top coat, semi-gloss and matte paint should be used to increase the body pigment to reduce the gloss, calcium carbonate is the ideal matting filler.

Calcium carbonate can be used as one of the additives in colorful coatings to play its role, so as to reduce the material cost and improve the decorative effect. Light calcium carbonate (light calcium, light calcium powder), I .e. precipitated calcium carbonate, can be used in colorful coatings. Its oil absorption is about 80%, particle size is about 15 microns, specific gravity is about 2.7, and refractive index is about 1.60. Can also be ground calcium carbonate (calcite powder) that is naturally produced marble and other grinding. In the metal anti-rust coating, calcium carbonate is the body pigment, there is a little anti-rust effect, the appropriate amount of calcium carbonate in the metal anti-rust coating is 30%. In recent years, the development of the coating industry has led to a sharp increase in the demand for calcium carbonate.

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Email：jason@zjbushi.com
Add：Shiping industrial park, jiande hangtou town, hangzhou city, zhejiang province

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