Titanium dioxide naturally exists in titanium ores such as titanium ore and rutile. Its molecular structure gives it high brightness and covering properties, but it must first be chemically extracted and purified. More than 60 years ago, DuPont invented the chlorinated titanium dioxide production process. Compared with the old sulfuric acid process, it can manufacture high-quality pigment products while reducing environmental emissions and Chemicalbook energy consumption. It has become the world's preferred technology. Titanium dioxide (or TiO2) is the most widely used white pigment in the industry. It is used in coatings for construction, industry and automobiles; plastics for furniture, electrical appliances, plastic tapes and plastic boxes; high-end magazines, brochures, and paper with films. And special products such as ink, rubber, leather and elastomer.

Edible-grade titanium dioxide, referred to as white pigment, is non-toxic and tasteless, edible, can not be used for chemical reaction in food, it can be directly added to food, only need to add a few thousandths, it acts as whitening and shielding Chemicalbook, and is widely used Used in white foods such as flour, beverages, meatballs, fish balls, aquatic products, candy, capsules, jelly, ginger, tablets, lipstick, toothpaste, children's toys, pet food, etc.

Rutile is one of the main minerals containing titanium. The tetragonal crystal system often has a good square columnar or needle-like crystal shape, and the aggregates are granular or dense. Dark red, maroon, yellow or orange, black in iron-rich ones; yellow to light brown streaks. Diamond luster, iron rutile is semi-metallic luster. It is brittle, with a hardness of 6 to 6.5, and a Chemicalbook density of 4.2 to 4.3g/cm3. The density of those rich in iron, niobium and tantalum increases, and the higher one can reach more than 5.5g/cm3. It can be dissolved in hot phosphoric acid. After cooling and dilution, adding sodium peroxide can make the solution turn yellow brown (reaction of titanium). Rutile can be produced in gneiss, pegmatite, eclogite (amphibolite) body and placer