Precipitated Barium Sulphate

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Precipitated Barium Sulphate

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Hoyonn Precipitated Barium Sulphate (HY-PBS) is a barium sulphate product with its original particle size, synthesized by controlling the chemical reaction between high-purity barium sulphide and sodium sulphate solution (BaS + Na2SO4 → BaSO4↓ + Na2S).

It has outstanding performances including high whiteness, low oil absorption, low wear rate, and low scattering.

It is usually applied for products that require more refined filler, such as coatings, plastics, electronic inks, etc.

Precipitated barium sulphate has a French name “blanc fixe” for “permanent white”, a fine powder manufactured and sold as a permanent, stable white pigment.

Hoyonn has been in the mining industry and providing barium sulphate products for 20 years. We offer customized product solutions to satisfy your demand.

Product Features

1. HY-PBS is acid and alkali resistant, and also has super stable resistance against light and weather in organic media.

2. We use advanced grinding technology and professional crystal form control in the production of HY-PBS. Its unique narrow particle size distribution, ultrafine particle size, good specific surface area, and low viscosity, makes it suitable for diversified applications.

3. HY-PBS has low wear rate due to its hardness value of 3Mohs 3.

4. HY-PBS can keep high light reflectivity not only in ultraviolet or infrared environments, but also in broader spectral range areas. It can be applied to any high gloss coating products, bringing more business value to our customers.

Applications

Technical Index

Index		National Standard CB/T2899-2008		HY-PBS
BaSO4（dry %）≥		98.0	97.0	98.80
Moisture %≤		0.30	0.30	0.10
Water Solubles %≤		0.30	0.30	0.10
Iron %≤		0.004	0.006	0.0015
Whiteness %≥		98	94	98.50
Oil Absorption g/100g		10-30	10-30	15
PH Value		6.5-9.0	5.5-9.5	7.5
Particle Size（45 um）%≤		0.2	0.2	0.01
Particle Size Distribution	Less than 10 um ≥	80	–	99
	Less than 5 um ≥	60	–	95
	Less than 2 um ≥	25	–	70

Advantages of Precipitated Barium Sulphate

Due to different processing, natural barium sulphate and precipitated barium sulphate are distinguished in the following aspects of performance.

Purity: The purity of natural barium sulphate generally depends on the barite in the mine, which may contain a certain impurities. Precipitated barium sulphate is chemically synthesised to remove a wide range of impurities. The BaSO4 content can reach 99% after extraction and precipitation treatments.

Particle size: Natural barium sulphate is processed by physical grinding, the particle size of which is ranging from 200 to 6,000 mesh. While precipitated barium sulphate has much higher fineness of about 10000 mesh or more.

Application areas: Natural barium sulphate is usually used in industries where don’t require much high performances in BaSO4 content, fineness, PH value, dispersion, whiteness, or oil absorption, such as ordinary paints and plastics. Precipitated barium sulphate can be used as filler for more high-end fine chemical products, including water-based coatings, automotive coatings, electronic ink, etc.

Why Hoyonn

Hoyonn Chemical has been in the polymer industry since 2001. We specialize in mineral development, powder processing, R&D innovation, and global sales of barium sulphate and various functional fillers and additives. We have our plants and know-how to supply worldwide customers from powder coatings, paints, plastics, rubber, ink, and more industries.