Re, Rhenium Ore Mineral Analysis

Only tungsten and carbon have higher melting points than rhenium. Rhenium is also the fourth highest element in terms of density (the most dense elements are platinum, iridium and osmium). Rhenium is one of the rarest elements found on earth.

Rhenium was discovered in Germany in 1925. This element has been detected in platinum ore and minerals of columbite, gadolinite and molybdenite.

Rhenium is a silvery-white element with a metallic sheen. The normal commercial form of rhenium is powder, but it can be combined with pressing and resistance sintering (bonding at high temperatures) in a vacuum or hydrogen atmosphere. When annealed, rhenium is twisted, wrapped, or rolled.

Commercial rhenium is obtained from molybdenum powders found in copper and sulfur ores. However, rhenium is not found in nature freely or as a compound in mineral ores. Molybdenum contains traces (up to 0.2 percent) of rhenium. Rhenium metal is obtained by reduction of hydrogen and ammonium phetate.

Rhenium is a metal with good wear resistance and is strong against corrosion. For this reason, it usually finds use in the electricity and electronics industry. Also, rhenium wire is used in flash photography and as an additive to tungsten and molybdenum based alloys.

Since rhenium sulfur is resistant to nitrogen and phosphorus poisoning, it is used as a catalyst in hydrogenation of fine chemicals, disproportion of alkenes and also in the production of lead-free, high-octane gasoline when combined with platinum.

In case of contact with the skin, it causes irritation and severe burns. In addition, inhalation or ingestion is dangerous for human health.

The world's largest rhenium reserve is located in Chile. Peru, USA and Kazakhstan follow.

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