At present, China only Pan Jin Titanium titanium dioxide production company uses chlorination technology , all the rest of sulfuric acid production . Titanium dioxide as a very important Titanium Casting Manufacturer industrial additive widely used in various kinds of industrial production , which can be used as a coloring agent in rubber , but also because it does not have any toxicity , but also used in cosmetics , meanwhile, is also used produce enamel , as well as non-toxic colors delicious GR composite titanium dioxide pigment
In recent years, enterprises in order to improve the production capacity of titanium dioxide , in addition to plant expansion , but also actively adopt new technology and new equipment. Technical aspects of the production uses : pre-mixed acid hydrolysis process , the vacuum crystallization technology , plus seed hydrolysis technology , membrane filter press is used to replace Moore leaf filter washing process , the rotary kiln exhaust heat for waste acid concentration process , etc. ; equipment technology is adopted : Raymond replaced with air swept mill grinding machine titanium , V = 130m3 large acid solution tank and v = 110m3 hydrolysis reactor utilization , disk filter centrifuge is used instead of ferrous separation , F = 200m3 large leaf filter and membrane filter press for a wash , (1) 3200 × 53000mm rotary kiln applications , rolling mill for grinding rutile titanium dioxide instead of Raymond crude , spray drying or flash drying instead of belt drying machine , DcS control technology, etc. , ultrafine mill which improves production efficiency and the level of production of white control devices , improved product quality , a significant reduction of raw material consumption and energy consumption , so that the whole enterprise technological level a certain upgrade and enhance the company 's competitiveness in the market . However , the concern is that the vast majority of improvements to enhance the technical level limited equipment units and local units of large-scale operations , while supporting the overall optimization of integrated innovation and technology is still insufficient production line , resulting in a performance with the domestic casting titanium production line a large gap still exists abroad compared .
In recent years, due to the foreign business enterprises within the industry to join the titanium dioxide industry expansion , and some areas , so that our titanium dioxide capacity expansion very quickly, construction, expansion projects have been started , the rapid expansion of production capacity , production increased significantly. 2000-2006 domestic titanium dioxide production capacity, annual production growth rates as high as 32 % and 26 %, significantly higher than the growth rate of the chemical industry , especially after 2003 titanium dioxide production capacity, production growth rate reached the highest value. 2007 production capacity and production reached 1.3 million t / a and 1 million t / a, ranking second in the world , accounting for 24% and 26 % of the world total. Domestic titanium dioxide production capacity is expected to speed growth momentum will be maintained for 4 to 6 years, competition among enterprises will be more intense. On the other hand , although the rapid expansion of domestic titanium dioxide production capacity , but production is still small -scale enterprises , according to statistics , China's titanium dioxide production of various types of enterprises more than 70 domestic backbone enterprises scale production of titanium dioxide are generally in the 15,000 to 4.5 between million t, few economies of scale can be achieved . Resulting in high production costs, so that titanium casting companies domestic enterprises to compete with international manufacturers towel at a disadvantage.
In short , China's titanium dioxide industry , there are many loopholes need to be filled , the need to develop , the state will support the development of titanium dioxide industry in the policy in the future,
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