What are the key application differences between precipitated and ground barium sulfate in plastics and coatings?

What are the key application differences between precipitated and ground barium sulfate in plastics and coatings?
Barium sulfate serves distinct roles depending on its production route. Ground barite powder, produced by crushing and washing natural ore, has a density of 4.3-4.6 g/cm3 and is used primarily as a low-cost filler. Precipitated barium sulfate, made by reacting soluble barium sulfide with sulfuric acid or sodium sulfate, achieves finer particle sizes and whiteness above 92 degrees. In plastics modification, barium sulfate improves chemical resistance, heat stability, and surface appearance in PP, ABS, PA, and PET compounds used for appliance housings, automotive parts, and electric kettle shells. It also increases product density and enhances wear resistance and anti-aging properties. In quartz surfacing applications, however, its high density adds weight and shipping costs while contributing little to whiteness or hiding power, making it less cost-effective than alternatives in that specific niche.