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Titanium Raw Materials Compound
Sep 26, 2017

Titanium is a chemical element, chemical symbol Ti, atomic number 22, in the periodic table of chemical elements in the 4th cycle, the IVB family. It is a kind of silver - white transition metal, characterized by light weight, high strength, metallic luster and corrosion resistance to wet chlorine. Titanium but cannot be applied to dry chlorine, even the temperature below 0 ℃ dry chlorine gas, also can produce severe chemical reaction, generate titanium tetrachloride, more decomposition generated titanium dichloride, even burning. Only when the moisture content of chlorine gas is more than 0.5%, titanium can maintain reliable stability.

Titanium is considered a rare metal, because it is scattered and difficult to extract in nature. But it is relatively abundant and ranks tenth among all the elements. The titanium ore is mainly titanium iron ore and rutile, which is widely distributed in the crust and lithosphere. Titanium is also found in almost all living things, rocks, water and soil. The extraction of titanium from the main ore requires the use of the croilor or hunter method. The most common compound of titanium is titanium dioxide, which can be used to make white pigment. Other compounds include titanium tetrachloride (TiCl4) (a catalyst and a cover for smoke) and titanium trichloride (TiCl3) (for catalytic polypropylene production).

Content distribution: ten kilometers thick stratum in the earth's surface, including titanium six over one thousand, 61 times more than copper, in the earth's crust in the first ten (elements in the crust ranking: oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, hydrogen, titanium), literally from underground grabbed a handful of earth, which contain a few parts per thousand of titanium, the world's reserves of more than ten million tons of titanium ore is not rare. Has one hundred million tons of sand on earth, titanium and zirconium both than sandstone heavy mineral, is mixed in the sand and gravel, after water elutriation round the clock in ten million, the heavier ilmenite and zircon sand rushed together, in the long coast, formed a piece of titanium and zirconium seam of ores. The seam is a black sand, usually a few centimeters to a few inches thick. Titanium is not ferromagnetic, and a nuclear submarine built with titanium does not have to worry about a magnetic mine.

Titanium compound

Titanium oxide is titanium dioxide, natural TiO2 is the golden red stone, pure TiO2 is the white powder, is the best white pigment, commonly known as titanium white, when cold is white, when hot is light yellow. In the past, titanium was mined for titanium dioxide. Titanium white adhesion force, not easy to change chemical change, always is Snow White, is extremely good white paint, its refractive index is high, the color is strong, the covering force is large, the chemical performance is stable. Other white coatings, such as zinc white ZnO and lead white 2PbCO3 Pb(OH) 2, do not have these excellent properties of titanium white. What is particularly valuable is that titanium is not toxic. It has a high melting point and is used to make fire-resistant glass, glaze, enamel, clay, and high temperature test vessels.

Titanium dioxide is the whitest thing in the world. The titanium dioxide can be used to coat more than 450 square centimetres of titanium. It is five times more white than the usual white paint, so it is the best pigment for white paint. The world is used as a pigment titanium dioxide, a year to several hundred thousand tons. Titanium dioxide can be added to paper to make the paper white and opaque, which is 10 times more effective than other materials. Therefore, paper and art paper are to be added titanium dioxide. In addition, in order to make the color of plastic lighter, make rayon sheen soft, sometimes also add titanium dioxide. In the rubber industry, titanium dioxide is also used as a filler for white rubber.

Titanium tetrachloride is very interesting, it is usually under the condition of colorless liquid (136.4 ℃ to 25 ℃ melting point, boiling point), a pungent smell, will be big white smoke in the wet air - it hydrolysis, you become white titanium dioxide hydrogel. In the water, the hydrolysis of the hydrolysis is h2 TiO 3. On the military front, people have used this strange form of titanium tetrachloride as an artificial smoke agent. Especially in the ocean, the water vapor, a titanium tetrachloride, smoke is like a white wall, blocking the enemy's line of sight. In agriculture, people use titanium tetrafluoride to prevent frost.

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