TiO2 Production: Sulfate vs. Chloride Methods
The titanium dioxide manufacturing process differs significantly between the sulfate and chloride methods. Below is a detailed comparison of both production techniques:
| Sulfate (Sulfuric Acid) Method |
Chloride Method |
| Drying, grinding concentrate |
Drying, grinding concentrate |
| Decomposition |
Drying, grinding of coke |
| Reduction of iron 3+ to iron 2+ |
Burden mix melting in ore-thermal furnaces |
| Solution purification |
Hot metal and slag casting into moulds |
| Pan crystallization |
Cooling and water hardening |
| Centrifugal removal of copperas |
Slag crushing and grinding |
| Vacuum-evaporating |
Slag mixing with tar |
| Hydrolysis |
Slag briquetting |
| White filtration |
Slag chlorination |
| Whitening and salt treatment |
Capture of TiCl4 in refrigerators |
| Calcination |
1st rectification of TiCl4 |
| Dry grinding |
2nd rectification of TiCl4 |
| Wet grinding |
TiCl4 burning |
| Hydraulic classification |
TiO2 and Cl2 capture |
| Surface treatment |
Surface treatment |
Diverse Applications of Titanium Dioxide
Fiber Optic Products
Titanium dioxide with 99.9998% chemical purity is essential for manufacturing optical fibers, medical equipment, and radio-electronic components. It serves as a purity benchmark in ultra-pure glass production.
Synthetic Fibers and Textiles
Used for matting twisted fibers to achieve desired optical properties in textile products.
Cosmetics
- UV protection in sunblock creams
- Whitening agent in toothpastes and soaps
Food Industry
- Whitening agent for food products
- UV protection for plastic packaging
Pharmaceutical Industry
Enhances whiteness and opacity in pharmaceutical products and packaging.
Printing Paints
Improves weather resistance and durability of coatings and inks.
Catalyst Applications
- Photocatalyst for chemical reactions
- Inert ceramic base material for active components
Nanotechnology
- TiO2 nanopowders for urban air purification
- Production of nanofiber paper
- Applications in hydrogen energy systems