Precipitated barium sulfate by barium sulfide solution and to join after remove calcium and magnesium mirabilite solution mixing, reaction at 80 , precipitate, after the suction filter, washing and acid pickling, adjust pH 5 ~ 6, filtration, drying and crushing.Can also use barium with yellow halide solution of glauber's salt.In the water solubility of only 0.0024 g / 100 g of water.Soluble in hot concentrated sulfuric acid.Slightly soluble in water is not soluble in ethanol and dilute acid.The dry lump.Industrial precipitated barium sulfate itself has no poison, but such as soluble barium compounds, can cause poisoning. Used for paint, ink, plastic, rubber and raw materials of battery or filling machine, impression and bond paper surface coating agent, textile sizing agent.Glass is used as clarifying agent, defoaming and increase luster effect.Can be used as anti radiation protection wall.Also used in ceramic, enamel, spices and pigments and other industries.It is making other barium salt material. Barium sulfate due to the features of strong chemical inertness, good stability, acid and alkali resistance, moderate hardness, high density, high whiteness, can absorb harmful rays, etc, is the one which has the function of environmental protection material, so it is widely used in all kinds of paint, high-grade printing ink, medicine synthetic chemicals, rubber, paper, ceramics, cosmetics and other fields.Refined barium sulfate is widely used in all kinds of paint (water-based), oil and powder coating, ink, paper making, engineering plastics plastic) (home appliance shell, building materials, high-grade electrical insulating plastics and rubber products such as packing.Battery cathode expansion rod, also can be used in the manufacture of ceramic, enamel glaze material, etc.Precipitated barium sulfate BaSO4 can serve as a white coating, can also be used for rubber and paper filling agent, can increase the weight and the degree of smooth.Precipitated barium sulfate in rubber, plastic, papermaking, paint, printing ink, paint and other industries used as fillers, whitening agent, weighting agent.