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What is natural barium sulfate and precipitated barium sulfateIssuing time:2019-10-25 14:55 Natural barium sulfate: Natural barium sulfate is made from barite raw ore by mineral processing, ore washing, crushing and other processes. Natural barium sulfate has a specific gravity of 4.0-4.5, moderate hardness, brittleness, stable chemical properties, insoluble in water, ethanol and hydrochloric acid. Acid and alkali resistance and water resistance. The chemical composition of barite is BaSO4, and its crystal belongs to orthorhombic sulfate mineral. They are usually thick plate-shaped or columnar crystals, mostly dense massive or plate-shaped or granular aggregates. When the quality is pure, it is colorless and transparent. When it contains impurities, it is dyed into various colors. The stripes are white, the glass luster is transparent to translucent. The cleavage of the three groups is complete and the included angle is equal to or close to 90 degrees. Non magnetic, ultrafine barium sulfate, stable chemical properties, pigment, colorless orthorhombic system. Precipitated barium sulfate has excellent physical properties, uniform fineness, and no qualitative white powder or paste. Precipitated barium sulfate: Precipitated barium sulfate is prepared by chemistry: barium sulfide solution is mixed with mirabilite solution added after removing calcium and magnesium, and reacted at 80 ℃ to form precipitate. After filtration, water washing and acid washing, pH value is adjusted to 5-6, and then filtered, dried and crushed. It can also be prepared by the reaction of barium yellow halide with mirabilite solution. Precipitated barium sulfate is insoluble in water and acid. The solubility in water is only 0.0024g/100. Soluble in heat. Insoluble in water, ethanol and dilute acid. Caking when dry. Industrial precipitation barium sulfate itself is not toxic, but if it contains soluble barium compounds, it can cause poisoning. We always insist "Quality assurance, reputation first" ”Our production and service tenet is "People oriented, honest business" ”Business philosophy, adhering to the“ Only in this way, can we become a business "development ideas, dedicated to the majority of new and old users to provide products and excellent services. Langfang Yinma Co., Ltd. takes "strong technical force, high-quality products, reasonable price and considerate and quick service" as the principle of unremitting progress, and constantly provides better, newer and more technical support to new and old customers. Since its inception, the company has been focusing on the quality of products and processing management of high difficulty products. At the same time, it can customize related products according to customer requirements. To realize the value of users is our goal. "Honesty in the market, relying on the quality of the world" is our company's business philosophy and foothold. Honesty as the root, quality-oriented, reasonable price is our purpose, welcome new and old customers to visit the company or call, letter to discuss business. |
