Top 10 Application Of Barium Sulphate

     Barite is a non-metallic mineral product with barium sulfate (BaSO4) as the main component. Pure barite is white and glossy.

     Barite is chemically stable, insoluble in water and hydrochloric acid, non-magnetic and toxic, Mohs hardness 3 ~ 3.5,specific gravity 4.0 ~ 4.6. Barite is a very important non-metallic mineral raw material, which has a wide range of industrial applications.

1.Drilling Mud Weighting Agent

        In some oil and gas Wells drilling, the general use of drilling mud, clay specific gravity is about 2.5, water specific gravity is 1, so the mud specific gravity is low, sometimes mud weight can not be balanced with underground oil and gas pressure, resulting in blowout accidents. In the case of higher underground pressure, it is necessary to increase the gravity of mud, adding barite powder to mud is an effective measure to increase the gravity of mud. For drilling mud with barite fineness in 200-325 mesh, such as barite fineness is not enough, it is easy to precipitate. The barite content of drilling mud should be greater than 4.2, BaSO4 content should be at least 95%, and soluble salt should be less than 1%.

2.Application for paints

     Barium sulfate is better than most other filling powders, with low cohesion, low dispersion and fine particles. It is especially suitable for pigment topcoat, varnish, spray paint, etc., with chemical resistance and weather resistance. It is inert, insoluble in water, acid, alkali and other organic intermediaries, excellent luster and particle fineness make the finish is maintained in long-term exposure. Barium sulfate is recommended for top paints to increase surface hardness and color stability.

       Barium sulfate has high fillability and can be used in all coating series, such as primer, thick paste coating and other types. Its low specific surface area, particle size distribution and easy fluidity make barium sulfate have low wear resistance in the processing process. Barium sulfate is recommended for automatic primer surface layer, which maintains good uniformity and smoothness even in high filling.

3.Application in latex paint

    Barium sulfate is used in latex paint, known as "acid-resistant" latex paint. It is resistant to acid even when exposed. The chemical properties of barium sulfate can be enhanced by its easy dispersion, optical preservation and fluidity.

4.Application In Powder Coating

      Barium sulfate has high whiteness and good covering performance. Barium sulfate used in powder coatings can improve its luster, fluidity, filling and compatibility with various pigments. Ultrafine barium sulfate as filler can reduce the cost of coating production.

5.Plastic and Rubber Industry

      The mechanical properties of the polymer matrix can be greatly affected by the introduction of some ultrafine barium sulfate. The addition amount of barium sulfate has a crucial impact on the mechanical properties of composite materials. Generally speaking, with the increase of the addition amount of barium sulfate, the toughness and strength of composite materials will first increase and then decrease. A small amount (mass fraction < 5%) of nano-barium sulfate can significantly improve the mechanical properties of composite materials, while too much addition will lead to agglomeration and reduce the properties of composite materials.

      In the cooling crystallization process of polymer melt, superfine barium sulfate will become the heterogeneous core of crystal growth, which can promote the crystallization process to a certain extent, such as increasing the crystallization temperature, accelerating the crystallization rate, improving the degree of crystallinity, forming special crystallinity, etc., but also damage the perfection of crystal and have the effect of refining grains.

6.Radioactive cement, mortar and concrete

       Barium cement, barite mortar and barite concrete are made of barite, which can replace metal lead plate to shield nuclear reactors and build X-ray proof buildings for scientific research and hospitals.

        Barium cement is made of barite and clay as the main raw materials. After sintering, clinker composed of barium silicate as the main mineral is obtained, and an appropriate amount of gypsum is added to grind together. The proportion is higher than the general Portland cement, up to 4.7 ~ 5.2.

        Barite concrete is a kind of concrete with large bulk density and X-ray shielding ability. The cementing material is generally Portland cement with low hydration heat or special cement such as high aluminum cement, barium cement and strontium cement. Portland cement is the most widely used. For ray-proof mortar and concrete barite, BaSO4 content should not be less than 80%, which contains gypsum, pyrite, sulfide and sulfate impurities should not exceed 7%.

7.Road construction

      A mixture of rubber and asphalt containing about 10% barite has been successfully used in parking lots and is a durable paving material. At present, the tires of heavy road construction equipment have been partially filled with barite to increase weight and facilitate compaction of fill areas.

8.Various Barium Compounds
     Barite can be used as raw materials to manufacture barium oxide, barium carbonate, barium chloride, barium nitrate, precipitated barium sulfate, barium hydroxide and other chemical raw materials. Chemically pure barium sulfate is the standard for measuring whiteness. Barium carbonate is an important raw material of optical glass. It introduces BaO into glass, which increases the refractive index of glass and improves other optical properties. Used in ceramics to prepare glazes; Barium chloride is a kind of agricultural insecticide; Barium nitrate is used in the fireworks and glass industries; Barium permanganate is a green pigment.

9.Application in printing ink
     The thermal conductivity and fluidity can reduce the injection forming time. Barium sulfate can be used as nucleating agent to improve its strength and thermal stability.

10.Application In Brake Pad

     Barium sulfate as a stable filler can improve the performance of the product. No harmful substances, ensure product safety. Acid resistance, alkali resistance, high temperature resistance, do not lose luster, good weather resistance. Brake pad grade barite purity is high, can improve the strength of auto parts and acid and alkali resistance.