Barite is a very important non-metallic mineral raw material and has a wide range of industrial applications. At present, the consumption structure of the world's barite is roughly: 85% for the drilling mud weighting agent; 10% for the raw materials of Sui Chemicals; 5% for other uses such as fillers, cement mineralizers, and road construction. In the region, the United States accounts for 40% of the world's total consumption, and China accounts for 14%. Then, Xiaobian will introduce you to the use of barite and barite.
What is barite
Barite is the most common mineral in earthworms. Its composition is barium sulfate. Produced in low-temperature hydrothermal veins, such as quartz-barite veins, fluorite-barite veins, etc., often with galena, sphalerite, chalcopyrite, cinnabar and other symbiotic. Most of the barite deposits produced in Hunan, Guangxi, Qinghai, and Jiangxi provinces are huge hydrothermal single mineral veins. Barite can also be produced in sedimentary rocks and appears as a nodule, mostly found in sedimentary manganese deposits and shallow-sea muddy and sandy sedimentary rocks. In the residual clay coating of the weathered residual deposit, it often forms a knot or a block. Chemical composition: BaO: 65.7%, SO3: 34.3%. There are Sr, Pb, and Ca isotopic substitutions in the composition.
The crystals of the barite are large tubes, and the crystals gather together sometimes to form a rose-shaped or bifurcated block, which is called crown-like barite. Pure barite is colorless and transparent, generally white, light yellow, with a shiny glass. And barite can be used as a white pigment (we are commonly known as Lithopone), it can also be used in chemical, paper, textile fillers, it can act as a flux in the glass production and increase the brightness of the glass. However, it is mainly used as a weighting agent in the drilling industry and refining cesium.
The use of barite
1. Drilling mud weighting agent: In some wells and gas wells drilling, the commonly used drilling mud and clay have a specific gravity of about 2.5, and the proportion of water is 1, so the specific gravity of the mud is relatively low. Sometimes the mud weight cannot balance with the underground oil and gas pressure. , it caused a blowout accident. In the case of high underground pressure, it is necessary to increase the proportion of mud. Adding barite powder to the mud is an effective measure to increase the proportion of mud. The barite used for drilling mud should have a fineness of more than 325 mesh. If the barite is not fine enough, it will precipitate easily. Barite for drilling mud requires a specific gravity greater than 4.2, a BaSO4 content of not less than 95%, and a soluble salt content of less than 1%.
2. Lithoprene white pigment: Liquor white is a commonly used high-quality white pigment that can be used as a raw material for paints and paints. The barium sulfate is heated and reduced to barium sulfide (BaS) using a reducing agent, and then a mixture of barium sulfate and zinc sulfide (70% of BaSO4 and 30% of ZnS) obtained by the reaction with zinc sulfate (ZnSO4) is the zinc gallium. White paint. The preparation of barite white barite requires a BaSO4 content of more than 95% and should not contain visible colored impurities.
3, a variety of antimony compounds: Barite as raw materials can be made of antimony oxide, antimony carbonate, antimony chloride, antimony nitrate, precipitated antimony sulfate, antimony hydroxide and other chemical raw materials. Chemically pure barium sulfate is a standard for measuring whiteness; barium carbonate is an important raw material for optical glass. It introduces BaO into the glass to increase the refractive index of the glass and improve other optical properties; it is used to formulate glazes in ceramics. Barium chloride is an agricultural pesticide; barium nitrate is used in the fireworks and glass industry; barium permanganate is a green pigment.
4. Barite for industrial use: In the paint industry, barite powder fillers can increase film thickness, strength and durability. Lithopone white pigments are also used to make white paints, which have more advantages than lead white and magnesium white in indoor use. The barite used in the paint industry requires sufficient fineness and high whiteness.
Paper industry, rubber and plastics industries also use barite as a filler, this filler can improve the hardness and wear resistance and aging resistance of rubber and plastics.
The barite fillers for rubber and papermaking generally require BaSO4 to be more than 98%, CaO to be less than 0.36%, and must not contain components such as magnesium oxide and lead.
5. Mineralizers for the cement industry: The use of barite and fluorite composite mineralizers in cement production has a significant effect on promoting the formation of C3S and activating C3S. The quality of clinker has been improved, and the early strength of cement can be approximately Increased 20~25%, the late strength increased by about 10%, clinker firing temperature decreased from 1450 °C to 1300 ± 50 °C. Barite dosage of 0.8 ~ 1.5%, the best results. In the production of white cement, the use of barite and fluorite composite mineralizers reduces the firing temperature from 1500°C to 1400°C. The free CaO content is low and the strength and whiteness are increased. The addition of an appropriate amount of barite to the cement raw meal using coal gangue as a raw material can greatly improve the cement strength, especially the early strength, where the saturation ratio of clinker is low. This is the comprehensive utilization of coal gangue and the production thereof. Low calcium, energy saving, early strength and high strength cement provide a useful way.
6. Ray-controlling cement, mortar and concrete: Using barite to absorb X-rays, using barite to make concrete, barite mortar and barite concrete instead of metal lead shielded nuclear reactor and construction Scientific research, hospital X-ray buildings.
7. Road construction: Rubber and asphalt mixtures containing about 10% barite have been successfully used in parking lots and are a durable paving material. At present, heavy-duty road construction equipment tires have been partially filled with barite to increase the weight, which is conducive to compaction in filling areas.
8. Others: After the weight of barite and oil are blended, it is applied to the cloth base to make linoleum; barite powder is used to refine kerosene; in the pharmaceutical industry, the digestive tract contrast agent is used; the pesticide, leather, and fireworks can also be produced. In addition, barite is also used as a getter for metal extraction and as a getter and binder for TVs and other vacuum tubes.é’¡ Alloyed with other metals (aluminum, magnesium, lead, calcium) for bearing manufacturing.
Editor's summary: The use of barite and barite is introduced here and I hope to help everyone. If you want to know more related information, you can pay attention to this website information.
Decoration use
Pvc Self-adhesive Floor Stickers
pvc self adhesive flooring,peel and stick vinyl floor stickers,removable vinyl floor stickers,PVC floor glue floor sticker,pvc adhesive floor wallpaper
JIANGSU ARTSTYLE DECORATION MATERIALS CO..LTD , https://www.artstyledecor.com