Titanium Dioxide Production Method

    At present, there are two methods for the production of titanium dioxide, namely the sulfuric acid method and the chlorination method. Globally speaking, the chlorination method has slightly more production capacity than the sulfuric acid method. In my country, due to technical reasons, the sulfuric acid method The number of manufacturers is much larger than that of the chlorination method, and the annual output of the chlorination method only accounts for 5 to 8% of the total output.

    The reason why the sulfuric acid method is widely used is that it has a long history of development, the process route is quite mature, the requirements for equipment configuration are very low, and the requirements for raw materials are not high. Both titanium ore and titanium slag can be used, and this method can produce rutile type Titanium dioxide can also produce anatase titanium dioxide, with low infrastructure requirements and short production time. Due to the above reasons, sulfuric acid titanium dioxide has been widely copied and occupies a very important position in the titanium dioxide industry. Compared with the chlorination method, the sulfuric acid method has its own shortcomings, which are mainly reflected in the long operating process, complex operations at each position, low degree of mechanization, many process variables, low parameter controllability, and large emissions of "three wastes". The pollution is serious and the energy consumption is huge. It is a high energy consumption and high pollution enterprise. Although the sulfuric acid method has many shortcomings and is likely to be replaced by other methods, people's enthusiasm for it has not diminished at this stage, its vitality is still tenacious, and it will still occupy an important position for a long time in the future.

    Although the chlorination method is relatively advanced, has the advantages of short process, high degree of automation, and stable product quality, its raw material sources are difficult and the cost is high. Although the "three wastes" emissions are small, the emissions from the production of high titanium slag and artificial rutile will be Including waste, the total amount of "three wastes" emissions is also quite large. At the same time, its technology is complex, production is difficult, and it requires high equipment and materials, so it is still difficult to promote it.