Rare Metals

Gallium

GalliumMolycorp produces high purity gallium metal for metallurgical, chemical electronic, and compound semiconductor applications in the following grades:

  • 4N (99.99%) gallium for metallurgical, chemical and solar applications
  • 6N (99.9999%) and 7N (99.99999%) gallium for electronic and compound semiconductor applications
  • MBE grade (99.999999%) for molecular beam epitaxy applications

In addition to high purity gallium, Molycorp manufactures gallium nitrate that is produced from 4N gallium. Primary gallium production takes place at our Stade, Germany facility. Secondary gallium production takes place at both of our Blanding, Utah and Peterborough, Canada operations.

Gallium is a widely distributed element associated with many other minerals. Since it is not found in concentrated deposits, it is rarely mined directly. Gallium is primarily obtained as a by-product in the recovery of other metals such as zinc and aluminum.

Its chemical behavior is similar to aluminum. In general there is a thin oxide coating on the surface.

It is stable against water, but can react vigorously with halogens (even at low temperatures) and other strong oxidants and bases. With its very low melting point and high boiling point, gallium has the widest liquid range of any element. It also has a strong tendency to supercool below its freezing point.

>> Email us to learn more about Gallium at todd.hall@molycorp.com

 


Gallium Nitrate

Gallium NitrateGallium Nitrate solutions are available in various concentrations. The solution can be packaged in 500 mL bottles, 55 gallon drums, and 275 gallon bulk containers according to the quantity ordered. Current production capacity is over 1,000 kg of contained Gallium in solution per month.

Gallium NitrateOur Gallium Nitrate is produced from 4N pure Gallium.

Gallium Nitrate is a custom product and as such the specifications vary depending upon specific customer requirements.

 

Listed here are some typical specifications based on previous customer requests.

Concentrations Impurities Max. mg/L Typical mg/L
Ga content 10% w/w Ag 1 0.5
Nitrate:Gallium molar ratio 3.0 – 3.5 Al 3 1
As 2 1
B 20 0.1
Ga content 100 g/L Ca 5 1.1
Nitrate:Gallium molar ratio 3.5 – 4.0 Cl 10 2
Fe 5 1.2
Ge 1 0.5
Ga(NO3)3 content 42% w/v Mg 1 0.2
Na 50 9
Nitrate:Gallium molar ratio 2.6 – 2.8 P 25 0.6
SiO2 20 1.5

 

>> Email us to learn more about Gallium Nitrate at todd.hall@molycorp.com


Gallium Oxide

Gallium Oxide is available in a range of purities and particle sizes and can be delivered in quantities and packaging to meet client specifications.

Gallium Oxide is used as a constituent in plasma display panels and in fiber optic applications.

Chemical Formula: Ga2O3
Formula Weight: 187.44
Melting Point: 1807°C
Specific Gravity: ~6.0

>> Email us to learn more about Gallium Oxide at joel.redd@molycorp.com


Gallium Trichloride

Gallium TrichlorideGallium Trichloride is used to produce organometallic Ga compounds and as a cathode depolarizer in Lithium Thionyl Chloride batteries.

Chemical Formula: GaCl3
Formula Weight: 176.08
Boiling Point: 201.3°C
Melting Point: 77.9°C

Specific Gravity:

  • Solid, 25°C – 2.47
  • Liquid, 80°C – 2.2

Soluble in H20, NH3, CCl4, CS2, Benzene

>> Email us to learn more about Gallium Trichloride at huey.york@molycorp.com


Indium

We produce indium metal for low melting point alloys, solders, CIG and ITO targets in the following grades:

  • 2N5 (99.5%)
  • 4N5 (99.995%)
  • 5N (99.999%)

Indium was discovered in 1863 by Reich and Richter, and was named indium as a reminder of the characteristic indigo blue color of its spectrum.

Indium does not occur in the native stage in nature. It is present in trace moments in many lead-, tin-, and zinc-bearing ores, from which it can be recovered as a by-product. It is a shiny, very malleable and ductile metal that melts at 156.6 degrees Celsius. Indium is not attacked in moist air, but dissolves in acid. It forms compounds with selenium, tellurium, antimony, and arsenic.

Indium was first used for the manufacturing of bearings for aircraft engines. It is a component of low-melting-point alloys, but its main usage presently is as indium oxide and indium-tin oxide (ITO) applied to glass as a conducting layer in optical-electronic devices (flat screens). High-purity indium (6N and above) has found applications in electronics, such as the InP single crystal.

>> Email us to learn more about Indium at joel.redd@molycorp.com


Rhenium

Our Molycorp Napanee, Ontario operations recycles super-alloy scrap and produces Ammonium Perrhenate (APR) NH4Re04, Re (69.5%).

RheniumRhenium is a ductile, malleable, silvery metal.

Density – 21.02 grams per cubic centimeter
Melting point – 3,180°C (5,760°F)
Boiling point – 5,630°C (10,170°F)
These melting and boiling point numbers are among the highest to be found for any of the chemical elements. When heated, unlike most metals, it does not have a ductile/brittle transition. It remains ductile up to its melting point. The unusual behavior of rhenium means that it can be heated and recycled many times without breaking apart. It has an extremely high re-crystallization temperature (2800°C) giving it excellent creep resistance.
Rhenium is one of the rarest elements in the world with an average crystal abundance of less than 0.5 ppm. It does not occur free in Nature, but is generally associated to molybdenites, MoS2 ores, that contain about 0.002 to 0.02% of this element. The molybdenites can be found in copper sulfide ores which represent an important commercial source of the element.
The two most important uses of rhenium are in super-alloys and platinum-rhenium catalysts. The aircraft industry is the major consumer of Re containing super-alloys. They are used primarily in single-crystal turbine blades in the hot sections of turbine engines. Platinum-rhenium catalysts are used to produce high-octane, lead-free gasoline. Rhenium is also used in tungsten-rhenium and molybdenum-rhenium alloys for electrical contact points, flashbulbs, heating elements, metallic coatings, temperature controls, thermocouples, vacuum tubes, and x-ray tubes and targets.

Tantalum & Niobium

Molycorp Silmet AS has longstanding experience in niobium and tantalum processing. The assortment of products includes hydroxides, oxides, various grades of metal, metal hydrides and metal powders.

For more information, click on the products listed below or send us an inquiry.

Tantalum

NSilmet - Rare Metalsiobium

Alloys

Comments are closed.