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Barite- general information

    Baryte or barite (BaSO4) is a mineral consisting of barium sulfate

    Baryte occurs in a large number of depositional environments, and is deposited through a large number of processes including biogenic, hydrothermal, and evaporation, among others. Baryte commonly occurs in lead-zinc veins in dolomitized limestones, in hot spring deposits, and with hematite ore. It is often associated with the minerals anglesite and celestine.  

     A range of accessory minerals, such as quartz, chert, dolomite, calcite, siderite and metal sulfides are usually occur with barite.

     Application 

    Barite is an important non- metallic mineral raw material.It has wide industrial uses, such as drilling mud weighting agent, Lithopone pigment,barium compound,filling industry,anti-ray cement,mortar and concrete etc.  

    Chemical - electronics, TV screen, glass, ceramics and medical applications.

    As a filling material,barite is also used in the field of paper-making industry,rubber and plastics industry since it can improve the hardness,insulation and aging resistance of rubber and plastics products.

    Some 77% worldwide is used as a weighting agent for drilling fluids in oil and gas exploration to suppress high formation pressures and prevent blowouts. Baryte used for drilling petroleum wells can be black, blue, brown or gray depending on the ore body. The baryte is finely ground so that at least 97% of the material, by weight, can pass through a 200-mesh (75-μm) screen, and no more than 30%, by weight, can be less than 6 μm diameter. The ground baryte also must be dense enough so that its specific gravity is 4.2 or greater, soft enough to not damage the bearings of a tricone drill bit, chemically inert, and containing no more than 250 milligrams per kilogram of soluble alkaline salts. In August 2010 API (American Petroleum Institute) published specifications to modify the 4.2 drilling grade standards for baryte to include 4.1 SG materials.

    A dense mineral comprising barium sulfate [BaSO4]. Commonly used as a weighting agent for all types of drilling fluids. 

    Pure barium sulfate has a specific gravity of 4.50 g/cm3, but drilling-grade barite is expected to have a specific gravity of at least 4.20 g/cm3 to meet API specifications. Contaminants in barite, such as cement, siderite, pyrrhotite, gypsum and anhydrite, can cause problems in certain mud systems and should be evaluated in any quality assurance program for drilling-mud additives.


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    Barite- general information

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