Titanium dioxide production enterprises are large energy, resource consumption, but also environmental pollution." Recently, China University of Geosciences (Beijing) materials science and Engineering Manager Ding Hao in a micro nano composite materials and special industrial applications that use mineral and titanium dioxide (TiO2) micro nano particle composite, which can effectively reduce the amount of titanium dioxide, and to achieve the desired effect.
According to Ding Hao, a white pigment as the best performance, the most widely used and the amount of absolute advantage, titanium dioxide once was known as the "industrial monosodium glutamate", while China is the world's largest titanium dioxide production and consumption country. However, the current production of 1 tons of titanium dioxide consumes 59% of titanium dioxide containing 1.9 tons of titanium ore by sulfuric acid, sulfuric acid 3.2 tons, 100 tons of water, 0.15 tons of iron. The chlorination to produce 1 tons of titanium dioxide will consume 1.2 tons of rutile minerals, 0.12 tons of chlorine, 0.25 tons of petroleum coke, 30 kg of aluminium chloride and 0.5 tons of oxygen. At the same time, will also discharge acid wastewater, 100 tons 5-8 tons of solid waste, 25 thousand cubic meters of containing sulfur dioxide, acid mist and dust exhaust. In recent years, with the development of industry, looking for alternatives to titanium dioxide has increasingly become the focus of social concern.
According to Ding Hao introduction, minerals and titanium dioxide micro nano particle composite is a component, a specific phase of inorganic mineral and crystal phase TiO2 interface and realize the ordered composite, composite product function of technology, including the formation of the -TiO2 composite mineral pigments, opacifying agent and composite photocatalyst and other new functional materials.
The mineral -TiO2 composite white pigment can greatly reduce the amount of TiO2, has a practical role to alleviate the problems of resources and environment, and the cost of production and consumption of the titanium dioxide in the application of industry control and so on, can be used to play the physical properties of titanium dioxide, such as coatings, paints, plastics, rubber, paper, ink, etc.. Mineral -TiO2 composite opacifier zirconium silicate can replace the become a new type of emulsion, can be used in the manufacture of green ceramic sanitary ware and ceramic tiles, eliminate radioactive harm using traditional opacifier glaze, is conducive to the solution of China's dependence on imported raw materials of zirconium silicate, high price, large processing difficulty and the presence of radioactive pollution and other issues, in favor of green building materials industry development and upgrading of products. -TiO2 composite photocatalytic materials can improve the photocatalytic capacity and efficiency of nano TiO2, reduce the cost and achieve the recycling and reuse, which is mainly used for photocatalytic degradation of pollutants, hydrogen production and water treatment.
In this regard, the Ministry of environmental protection, said Li Xinmin, former inspector general of the Department of pollution, the per capita amount of titanium dioxide has been used to measure the level of development of an important indicator of a country. But as high energy consumption and high pollution "double high" large enterprises, titanium dioxide production has often been included in the environmental management of the blacklist, now has a new composite materials can effectively reduce the use amount of titanium dioxide, is a piece of exciting news to all the other, to promote the transformation and upgrading of traditional industries has an important role."