Home > news > Content
What is natural barium sulfate and precipitated barium sulfate
- 2020-07-16-

What is natural barium sulfate and precipitated barium sulfate


Natural barium sulfate


Natural barium sulfate is raw barite ore, processed by ore beneficiation, ore washing, crushing, etc. Natural barium sulfate has a specific gravity of 4.0-4.5, moderate hardness, brittleness, stable chemical properties, and is insoluble in water, ethanol and hydrochloric acid. Acid and alkali resistance and water resistance etc. The chemical composition of barite is BaSO4, and the crystal belongs to the orthorhombic (orrhombic) sulphate mineral. It is often thick plate-like or columnar crystals, mostly dense block or plate-like, granular aggregates. When it is pure, it is colorless and transparent, and when it contains impurities, it is dyed into various colors, with white streaks, glass luster, and transparent to translucent. The three groups of cleavage are complete and the included angle is equal to or close to 90°. Non-magnetic, ultra-fine barium sulfate has extremely stable chemical properties, high-quality pigment, colorless orthorhombic crystal system. Precipitated barium sulfate, superior physical properties, uniform fineness, amorphous white powder or paste.


Precipitated barium sulfate


  Precipitated barium sulfateIt is made by chemistry: mix barium sulfide solution with Glauber's salt solution after removing calcium and magnesium, react at 80°C to form precipitation, after suction filtration, washing with water and pickling, adjust the pH value to 5-6, and then Filtered, dried and crushed. It can also be prepared by reacting barium yellow halogen with Glauber's salt solution. The precipitated barium sulfate is insoluble in water and insoluble in acid. The solubility in water is only 0.0024g/100g water. Dissolved in hot concentrated sulfuric acid. Insoluble in water, ethanol and dilute acid. Agglomerates when dry. Industrial precipitated barium sulfate itself is not toxic, but if it contains soluble barium compounds, it can cause poisoning.