Zirconium ore

Zirconium is a chemical element whose chemical symbol is Zr, atomic number 40, is a silver-white transition metal. The surface of zirconium is easy to form an oxide film with a luster, so the appearance is similar to steel. It is corrosion-resistant, insoluble in hydrofluoric acid and aqua regia; at high temperatures, it reacts with non-metallic elements and many metal elements to form solid solution compounds. Zirconium has good plasticity and is easy to process into sheets and wires. Zirconium can absorb a large amount of gases such as oxygen, hydrogen, and nitrogen when heated, and can be used as a hydrogen storage material. Zirconium has better corrosion resistance than titanium and is close to tantalum and niobium . Zirconium and strontium are two metals that are similar in chemical history and are symbiotic together and contain radioactive materials. The content of zirconium in the earth's crust is ranked 20th, almost equal to chromium . Zirconium-containing minerals of industrial value in nature, mainly zircon and oblique zircon.

First, the nature of zirconium

The outer surface of the metal zirconium is covered with a dense oxide layer at room temperature, but still has a metallic luster. Powdered zirconium is dark gray. The metal zirconium has a melting point of 1852 ° C and a density of 6.49 g 3 . It has good plasticity and is easy to process into boards, wires and the like. Zirconium can absorb a large amount of gases such as oxygen, hydrogen, and nitrogen when heated, and can be used as a hydrogen storage material. Zirconium has better corrosion resistance than titanium and is close to tantalum and niobium. Zirconium and strontium are two metals that are very similar in chemical properties and are symbiotic together and contain radioactive materials. The content of zirconium in the earth's crust is ranked 20th, almost equal to chromium.

Second, the use of zirconium

The thermal neutron capture cross section in zirconium has outstanding nuclear properties and is an indispensable material for the development of the atomic energy industry. It can be used as a reactor core structure material. Zirconium powder is easy to burn in the air and can be used to detonate detonators and smokeless gunpowder. Zirconium can be used as an additive for deoxidation and desulfurization of high-quality steel. It is also a component of armor steel, artillery steel, stainless steel and heat-resistant steel. Zirconium is an important alloying element of magnesium alloy, a magnesium alloy can be improved tensile strength and processability. Modifier zirconium or aluminum magnesium alloys, grain refinement can. Zirconium dioxide and zircon are the most valuable compounds in refractories. Zirconium dioxide is the main material for new ceramics and can also be used as a heating material for high temperature oxidation. Zirconium dioxide can be used as an additive for acid-resistant enamel and glass, which can significantly improve the elasticity, chemical stability and heat resistance of the glass. Zircon has strong light reflection properties and good thermal stability, and can be used as an opacifier in ceramics and glass. Zirconium can absorb a large amount of gases such as oxygen, hydrogen and nitrogen when heated. It is an ideal getter. For example, zirconium powder is used as a deaerator in the electron tube, and a zirconium wire zirconium sheet is used as a grid support and an anode support.

Third, zirconia ceramics

Zirconium oxide precision ceramics are characterized by electrical insulation, piezoelectricity, heat resistance, high hardness and wear resistance. They can be used as electrical ceramics for artificial bones, artificial teeth and immobilized catalyst carriers, so they are in the material family. Rookie. Zirconium oxide toughness ceramics are comparable in strength to high-strength alloy steels and can be used as ceramic hoes, scissors and kitchen knives. Ceramic scissors. Ceramic scissors are very sharp, without magnetism, suitable for editing recordings and video tapes. The ceramic kitchen knife is suitable for cutting cooked food and will not leave irony smell on the food. Partially stabilized zirconia ceramics with high hardness characteristics for the manufacture of wear parts such as nozzles, threaded conduits, extrusion and wire drawing.

Fourth, the country of zirconium - Australia

Australia is rich in mineral resources. Among them, zircon reserves rank first in the world, and its output accounts for about 80% of the world's total output. The zircon mining industry plays an important role in the country's mining industry, with a focus on the three states of New South Wales, Western Australia and Queensland. Australia is the world's largest supplier of zirconium. The trade targets are mainly the United Kingdom, the United States, Japan, Germany and Canada.

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