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Barite- general information

      

    Chemical - electronics, TV screen, glass, ceramics and medical applications. Baryte used for drilling petroleum wells can be black, blue, brown or gray depending on the ore body.

    A dense mineral comprising barium sulfate [BaSO4]. Baryte commonly occurs in lead-zinc veins in dolomitized limestones, in hot spring deposits, and with hematite ore. 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.

    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. It is often associated with the minerals anglesite and celestine.2 drilling grade standards for baryte to include 4. 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. The ground baryte also must be dense enough so that its specific gravity is 4.

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

    Pure barium sulfate has a specific gravity of 4.  

     A range of accessory minerals, such as quartz, chert, dolomite, calcite, siderite and metal sulfides are usually occur with barite. In August 2010 API (American Petroleum Institute) published specifications to modify the 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.It has wide industrial uses, such as drilling mud weighting agent, Lithopone pigment,barium compound,filling industry,anti-ray cement,mortar and concrete etc.50 g/cm3, but drilling-grade barite is expected to have a specific gravity of at least 4. Commonly used as a weighting agent for all types of drilling fluids.5em; COLOR: #333333; VERTICAL-ALIGN: baseline; BORDER-TOP: 0px; BORDER-RIGHT: 0px">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.

     Application 

    Barite is an important non- metallic mineral raw material.20 g/cm3 to meet API specifications.1 SG materials.

    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
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    ارسال شده در تاریخ شنبه 13 تير 1394 [ گزارش پست ]

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