chinese titanium dioxide manufacturers

The production of lithopone is associated with several environmental concerns, including air and water pollution. Zinc sulfide ore mining can lead to soil erosion and habitat destruction, while sulfuric acid leaching and calcination processes can release pollutants into the air and water. To address these issues, many Chinese lithopone factories have implemented environmental protection measures such as wastewater treatment and emission reduction technologies.

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Lithopone was discovered in the 1870s by DuPont. It was manufactured by Krebs Pigments and Chemical Company and other companies.[2] The material came in different seals, which varied in the content of zinc sulfide. Gold seal and Bronze seals contain 40-50% zinc sulfide, offering more hiding power and strength.[3] Although its popularity peaked around 1920, approximately 223,352 tons were produced in 1990. It is mainly used in paints, putty, and in plastics.[1]

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Apart from its coloring properties, Anatase Titanium Dioxide also acts as an anti-caking agent. In powdered or granulated products, it prevents clumping by keeping the individual particles separated. This ensures that the product flows freely and maintains its quality during storage and transportation. For example, in icing sugar or powdered milk, the addition of food-grade titanium dioxide helps to keep the product free-flowing and easy to use.

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