What is barite used for? Every major use, explained

Barite is useful for three reasons. It is very dense, with a specific gravity above 4. It is chemically inert and barely dissolves. And it is soft, so it does not wear out the equipment it passes through.

1. Drilling fluids

In oil and gas drilling, barite is added to the drilling mud to make it heavier. The weight of the fluid column holds back the pressure in the rock formations and keeps the well under control. In the United States, more than 90% of barite sold goes into this use, and USGS reports there is no large-scale alternative.¹

Drilling barite is specified under API 13A, which sets limits for density, particle size and soluble calcium. Read more in our guide to the API 13A barite specification.

2. Paints and coatings

Ground and micronized barite is used as a filler and extender in paints and coatings. USGS lists automobile paint primer, used for metal protection and gloss, as a specific application.¹ Barite is chemically resistant and has a refractive index of about 1.64, and coatings suppliers market it for weather resistance, chemical resistance and gloss control.³

Barium sulphate can also make paint very white. Researchers at Purdue University developed an experimental barium sulphate paint that reflects 98.1% of sunlight and kept surfaces cooler than the surrounding air in direct sun.⁴

3. Plastics and rubber

Barite is used as a filler and weighting agent in plastics and rubber.¹ Its density adds mass and its inertness means it does not react with the polymer.

4. Brake and clutch pads

USGS lists automobile brake and clutch pads among the specific uses of barite.¹ In friction materials it acts as a dense, stable filler.

5. Radiation shielding

Barite blocks X-rays and gamma rays well. It is used as aggregate in high-density concrete for radiation shielding around X-ray units in hospitals, in nuclear power plants and in research facilities.¹

6. Lead-acid batteries

Small amounts of barium sulphate are added to the negative plates of lead-acid batteries as part of the expander. It helps lead sulphate crystals form evenly during discharge. A 2010 study in the Journal of Power Sources found the strongest effect at 1.0% by weight relative to the leady oxide used to make the paste.⁵

7. Medical imaging

Ultrapure barium sulphate is used as a contrast medium in X-ray and CT examinations of the digestive tract.¹ Medical barium sulphate is a regulated pharmaceutical product, made to drug standards and approved by authorities such as the US Food and Drug Administration.⁶

8. Other industrial uses

• As a weighting agent in the cement jacket around underwater petroleum pipelines¹
• In mould-release compounds in the metal-casting industry¹

Frequently asked questions

Sources

1. U.S. Geological Survey, Mineral Commodity Summaries 2026: Barite, February 2026. pubs.usgs.gov
2. General Directorate of Mineral Research and Exploration (MTA), "Barit". mta.gov.tr
3. Sibelco, Baryte for coatings. sibelcotools.com
4. Purdue University, "The whitest paint is here, and it's the coolest. Literally.", April 2021. purdue.edu
5. Pavlov D., Nikolov P., Rogachev T., "Influence of expander components on the processes at the negative plates of lead-acid cells on high-rate partial-state-of-charge cycling. Part I", Journal of Power Sources, vol. 195, 2010. osti.gov
6. U.S. Food and Drug Administration, prescribing information for barium sulfate products, 2017. fda.gov

Looking for a barium sulphate supplier?

KHN Minerals mines barite at its own licensed sites in Konya and Isparta, micronizes it in Akyazı and tests it in its own laboratory. Tell us your application, grade and volumes.

• 97%typical BaSO₄ in our ore
• 3barite mining licences
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