china lithopone

Moreover, anatase titanium dioxide is non-toxic and environmentally friendly, making it a safe choice for use in paints for both indoor and outdoor applications. This pigment is free from heavy metals and harmful chemicals, making it suitable for use in residential, commercial, and industrial settings. In addition, anatase titanium dioxide is readily available in various grades and particle sizes to meet the specific requirements of different paint formulations.

...

 At present, Lide powder is mainly produced in China. Most of the domestic Lide powder production is still using traditional methods. The main raw materials are zinc oxide, sulfuric acid and barium sulfide (barite and coal are produced by high temperature reduction). Zinc 45% ~ 70%. The traditional method for producing the Liede powder process is to use zinc bakelite containing more than 45% zinc as a raw material to be leached with sulfuric acid to obtain a crude zinc sulfate solution, and then to remove iron by potassium permanganate, and then replace the heavy metal with zinc powder and filter to obtain zinc sulfate. The refined liquid is further subjected to metathesis reaction, pressure filtration, calcination, rinsing, drying, and pulverization with strontium sulfide to obtain a series of different types of lindose powder containing zinc sulfide of 30% or more. The whole process is carried out in an acidic (ra<7) environment, which consumes a large amount of sulfuric acid. The sulfuric acid has strong corrosiveness and requires high production equipment. The final discharged slag is acidic slag, which brings new pollution to the environment. High requirements, high production costs, and poor quality of the products obtained.

...

Anatase titanium dioxide (TiO2) is a widely used food-grade additive that imparts various functionalities to food products. It is a naturally occurring mineral that has been extensively studied for its safety and effectiveness in food applications. TiO2 is classified as GRAS (Generally Recognized As Safe) by the FDA (Food and Drug Administration) and is approved for use in a wide range of food products, including beverages, confectionery, and pharmaceuticals.

...