Barium sulfate for most people is a strange word, in fact, in our daily life, the figure of permanent white can be said to be everywhere, but they will generally be made in the shape of products in our lives. In what ways can baritite be used? Can it be dissolved?
What is barium sulfate?
Classification of barium sulfate
USES and standards of barium sulfate in industrial production
What is barium sulfate?
In the textbook of physics and chemistry, the chemical formula of barium sulfate is BaSO4, which is generally a white rhombic body. It is colorless, odorless, with a density of 4.499 and a melting point of up to 1580℃. Its chemical properties are very stable, insoluble in water and acid, alkali resistance, non-toxic, non-magnetic, can also absorb x-rays and other x-rays. In nature, barium sulfate is also known as barite, is a kind of natural ore, the general shape is bifurcated crystal block, the color is mainly determined by the kind of impurities and how much, pure barite is colorless transparent. Barite has no direct harm to human body and can be directly contacted.
barium sulfate is stable and insoluble in water, acids, bases or organic solvents. In terms of medical treatment, radiological examination USES baritite agent mainly to make use of it in the gastrointestinal tract can absorb x-rays and make it develop, so it is mainly used as a contrast agent for the gastrointestinal tract. Permanent white is insoluble in water and lipid, so it will not be absorbed by the gastrointestinal mucosa, basically non-toxic to people. Industry, barium sulfate can be used as paint, ink, plastic, rubber and battery raw materials or filler, printing paper and copper plate paper surface coating agent. In the textile industry, barium sulfate can be used as sizing agent. Glass products used as clarifiers, can play a role in defoaming and increasing luster. Can be used as anti - radiation protection wall material. Also used in ceramics, enamel, spices and pigments and other industries. It is also used to make other barium salts. In addition, baritite products are also used in oil, natural gas drilling mud weight agent, in the barium chemical industry, fillers and other areas of consumption is also increasing year by year.
Classification of barium sulfate
1.Heavy barium, also known as barite powder or natural barium powder. People choose natural permanent white ore (barite) after cleaning, polishing, drying and other processes made, its impurities are more, the quality is mainly determined by the mine itself, but its price is low, usually used in white pigment production or low grade paint, plastic, ink industry as a filler.
2.Precipitated barium sulfate, also known as industrial barium sulfate or barium precipitation. It is manufactured by hand and unlike heavy barium is almost free of impurities. It is slightly soluble in water but insoluble in acids. It is not toxic in itself, but soluble barium can cause poisoning if it is present. Precipitated permanent white in industry is mainly generated by the reaction of baritite with sulfuric acid, barium chloride with sulfuric acid or sodium sulfate, and barium sulfide with sodium sulfate. Precipitated baritite because its stability by their specific indicators and application in medicine, high-grade paint printing ink, plastic, rubber, glass, ceramics and other fields of ACTS as filling material, people usually according to different application is divided into coating grade precipitated barium sulfate, plastic grade precipitated barium sulfate and so on, its relative to the heavy barium price is higher.
3.Modified barium sulfate, divide again for barium sulfate and modification of precipitated barium sulfate, is barite powder or precipitated permanent white through related treatment makes its performance enhancements in one aspect, the application is similar to precipitation, mainly depends on its related properties, including after further processing and refining it modification of ultrafine barium sulfate or modified superfine precipitated barium sulfate. The price is higher than that of precipitated barium sulfate.
4.Nano-sized precipitated barium sulfate, modified precipitated barium sulfate through deep processing, makes the D50 (median size distribution) control between 0.2 mu m 0.4 mu m, because of the high demand for its processing, at present our country to produce nano-sized precipitated baritite manufacturer also is less, the price also is higher, nano-sized precipitated permanent white is mainly used in high-grade paint, paint and other industries.
Uses and standards of barium sulfate in industrial production
The main use - drilling mud weight agent. The circulation mud containing barite powder can cool the drill bit, take away debris and seal the hole wall, thus strengthening the well wall, controlling the oil and gas pressure and effectively preventing blowout accidents. The fineness of barite powder should be more than 325 mesh, and if the fineness is not enough, precipitation is likely to occur. The specific gravity is greater than 4.2, the barium sulfate content is greater than 95%, and the soluble salts are less than 1%.
As an important industrial filler. Application: coatings, plastics, paper, rubber and other industries. Coating industry: barite powder filler can increase the film thickness, strength and durability, make the product bright color, good stability. Barite powder made of zinc barium white pigment, indoor use than lead white, magnesium white has more advantages. Plastic industry: barite powder can make the product bright color, and improve the product strength, stiffness and wear resistance. Rubber industry: a large number of barite powder use, can reduce the production cost, improve the hardness of the product, acid and alkali resistance and water resistance, and natural rubber and synthetic rubber has a good reinforcing effect. Papermaking industry: barite powder can be used as white paper, copper paper filler and coating filler, can improve whiteness and surface coverage. Paint with barite powder barium sulfate content is not less than 90%, fineness is less than 325 mesh, to have a higher degree of whiteness, production of zinc barium white barium sulfate content more than 95%, can not contain visible colored sundries; Barite powder used in rubber and papermaking generally requires barium sulfate content greater than 98%, calcium oxide content less than 0.36%, can not contain impurities such as magnesium oxide, lead, fineness more than 325 mesh.
The mineralization agent of cement industry and the cement industry of special cement making: adding the compound mineralization agent of barite and fluorite in the cement production can increase the whiteness and strength of cement; Barium cement, barite mortar, and barite concrete can be made and used in buildings that need to be protected from x-rays. Road construction: the rubber-and-barite asphalt mixture is a durable paving material that adds weight and helps strengthen the road. Industry standard: the barite content in the cement mineralization agent is 0.8 ~ 1.5%. As the barite powder of anti-ray mortar and concrete, the content of baritite is greater than 80% and the content of impurities is less than 7%. The barite powder used for paving is about 10%.
There are a lot of baritite models in the market, how to choose what type of barium sulfate to use, it is often difficult to choose, because the application of barium sulfate in various industries, the proportion of the addition of the formula, and the difference of the type, it is necessary to have some experience and technology.If you are considering purchasing barium sulfate, Shaanxi Fuhua Chemical Co., Ltd.will provide you with the best products.