Titāna resursi

Ten kilometers of the earth's surface contains six per thousand of titanium, 61 times more than copper, making it the tenth largest in the earth's crust (elements: oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, hydrogen, titanium), just grab a handful of soil from the ground, which contains a few thousandths of titanium.It is not unusual for the world to have reserves of more than 10 million tons of titanium ore, and there are hundreds of millions of tons of sand on earth.Titanium and zirconium, two heavier minerals than sand and gravel, are mixed in the gravel.Over eons of years, as the water washed day and night, the heavier ilmenite broke up with zircalite sand, forming layers of titanium and zirconium along the long coast. This mineral layer is black sand, usually a few centimeters to tens of centimeters in thickness.Titanium is not ferromagnetic, and nuclear submarines built with high purity titanium do not have to worry about magnetic mines.

China has 965 million tons of titanium resources, ranking first in the world, accounting for 38.85 percent of the world's proven reserves.They are mainly concentrated in Sichuan, Yunnan, Guangdong, Guangxi and Hainan, among which Panzhihua Xichang area is the largest titanium resource base in China, with a titanium resource of 870 million tons.

The main ores of titanium are rutile TiO2 and ilmenite FeTiO3, and the discovery comes from the analysis of these two ores.  As early as 1791, the Reverend Gregor in the diocese of Menacan in the south-western  England was also a scientist.  He analyzed a black ore produced in his parish, today's ilmenite, and discovered a new metal substance.  Three years later, in 1795, Kraprot analyzed rutile from Boynik, Hungary, realizing that it was a new metal oxide with acid-alkali resistant. Titan, the first son, named titanium, the symbol of the element Ti.  Two years later, Kraprot confirmed that the nicktite discovered by Gregor was titanium.

Titanium has strong corrosion resistance to acid and alkali, and has become an important material in chemical production.  

Titanium is usually considered a rare metal.  In fact, the amount of it in the earth's crust is substantial, larger than common metals like zinc, copper, and tin, and even larger than chlorine and phosphorus.