Zircon sand processing method varies with zircon deposit conditions, the introduction of common zircon sand processing as below.
What is Zircon Sand?
Zirconium sand, also known as zircon sand, is a mineral composed mainly of zirconium silicate. Pure zircon sands are colorless transparent crystals, which are often dyed yellow, orange, red and brown due to different origins and impurities. The crystalline structure belongs to the tetragonal crystalline system. The crystalline structure is tetragonal cone-columnar with a specific gravity of 4.6-4.71. The refractive index is 7~8, and the refractive index is between 1.3 and 2.0. The melting point fluctuates at 2190~2420 C with the impurity.
Zircon is a mineral consisting mainly of zirconium, silicon and oxygen crystallized from magma during igneous rock formation. Zircon is also found in dikes and metamorphic rocks. It is a tetragonal system and is usually well-developed pyramidal small tetragonal cylinder and irregular granular. Crispy and factoid. It is a high-quality refractory material. Most of them coexist with ilmenite, rutile, monazite and yttrium phosphate rock in seashore sand and are obtained by water separation, electric separation and magnetic separation.
Zircon sand distribution in the world
The regional distribution of zirconium reserves is highly concentrated, and the zirconium reserves are mainly distributed in Australia, South Africa and other countries, and the distribution is highly concentrated. From the perspective of regional distribution of zirconium resources, the world zirconium reserves are mainly in the hands of Australia, South Africa, Ukraine, India and Brazil. Five countries occupy 86%of the world’s zirconium resources, and the resource monopoly is very obvious. According to the US Geological Survey, China’s zirconium ore reserves are only 500 thousand tons, accounting for less than 1%of the world’s Zirconium resources. Output growth is moving steadily, and supply structure is changing.
Zircon Sand Applications
Zircon sand is extremely resistant to high temperature with a melting point of 2750 degrees Celsius. And acid corrosion resistance.80%of the world is directly used in casting industry, ceramics, glass industry and refractories. A small amount is used in ferroalloys, pharmaceuticals, paints, tanning, abrasives, chemical and nuclear industries. A very small amount of used for smelting zirconium.
High-quality zircon and other adhesives together have good adhesion and are used in the foundry industry. Zircon sand is also used as a brick for glass kilns. Zircon sand and zircon powder are mixed with other refractory materials for other uses.
Zirconium in metallic form is mainly used in the chemical and nuclear reactor industries, as well as in other industries requiring corrosion resistance, high-temperature resistance, special fusion properties or the absorption of special neutrons. In the United States, about 8%of the total consumption of zirconium is used in these industries, and the only meaningful application of hafnium metal is in Naval Nuclear reactors.