API BARITE.

 

Product Description: API Specification 13A – 7.1.1

 

Drilling-grade barite is produced from commercial barium sulfate-containing ores. The manufacturer shall retain certificates of analysis or similar documentation on these commercial barium sulfate ores. It may be produced from a single ore or a blend of ores and may be a straight-mined product or processed by beneficiation methods, i.e. washing, tabling, jigging or flotation. It may contain accessory minerals in addition to the barium sulfate (BaSO4) mineral. Because of mineral impurities, commercial barite can vary in colour from off-white to grey to red or brown.

 

Barite physical and chemical requirements 

 

• Requirement Standard: Density 4,10 g/ml. Minimum.

• Water-soluble alkaline earth metals, as calcium 250 mg/kg, maximum. 

• Residue greater than 75 µm Maximum mass fraction 3,0 % 

• Particles less than 6 µm in equivalent spherical diameter Maximum mass fraction 30 %