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钛元素在地球表层中的总含量为0.62％,在目前已发现的元素中居第九位。但钛所赋存的具有开发利用价值的矿物种类却很少,目前主要是金红石和钛铁矿。铁在两百年前即被发现,但其在工业上的广泛应用是从本世纪几个具有历史意义的发现后开始的(钛铁合金,1906年;氧化钛颜料,1918年;钛金属,1948年)。目前钛精矿,特别是金红石精矿的主要用途是制造二氧化钛颜料(据估计美国在七十年代95％的钛矿物被用作制造二氧化钛颜料)。从1983年起,各国对二氧化钛颜料的需求量逐年增长,而且在今后几年中,全世界对二氧化钛颜料及钛金属的需求将继续以每年3％和5％的速度增长。而在我国,金红石型二氧化钛颜料属短缺产品,每年需花大量外汇
The total content of titanium in the Earth’s surface is 0.62%, ranking ninth in the elements found so far. However, the existence of titanium has the value of development and utilization of mineral species is very small, mainly rutile and ilmenite. Iron was discovered two hundred years ago, but its widespread industrial use began with several historic discoveries of the century (Titanium-iron alloys, 1906; titanium oxide pigments, 1918; titanium, 1948 ). Titanium concentrates, and especially rutile concentrates, are currently used primarily to make titanium dioxide pigments (it is estimated that 95% of the titanium minerals in the United States were used to make titanium dioxide pigments in the 1970s). Since 1983, the demand for titanium dioxide pigments in various countries has been increasing year by year. In the coming years, the demand for titanium dioxide pigments and titanium metal in the world will continue to grow by 3% and 5% annually. In our country, rutile titanium dioxide pigment is a shortage of products, each need to spend a lot of foreign exchange