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Introduction

• Rhodium is a chemical element with the symbol Rh and atomic number 45.
• Rhodium is a hard silvery white and durable metal that has a high reflectance.
• Rhodium metal is, as a noble metal, inert.
• Rhodium occurs natively with other platinum metals in river sands of the Urals and in North and South America.
• Rhodium is one of the rarest elements on Earth.

Extraction Process

• The industrial extraction of rhodium is complex as the metal occurs in ores mixed with other metals such as palladium, silver, platinum, and gold.
• Rhodium is often produced as a by-product of other metals extraction, when its production becomes more economical.
• Rhodium is usually obtained as a by-product in the recovery of platinum from its ores.
• Rhodium is separated by a series of chemical and physical reactions from other platinum metals with which it occurs.
• It has been found that although rhodium can be extracted under certain conditions , the PGMs are more readily extracted and therefore amines are useful only when Rh is the only precious metal in solution.

Uses

• The primary use of this element is as an alloying agent for hardening and improving the corrosion resistance[4] of platinum and palladium.
• Rhodium is used to make electrical contacts, as jewelry and in catalytic converters, but is most frequently used as an alloying agent in other materials, such as platinum and palladium.
• It is useful as an electrical contact material as it has a low electrical resistance, a low and stable contact resistance, and is highly resistant to corrosion.
• Rhodium is used primarily to make alloys with other metals. These alloys are used for specialized industrial purposes and in jewelry.
• Rhodium is also used in jewellery, where it is used to plate white gold via electrolytic deposition.

Market

• Demand from the glass industry for rhodium is also expected to be strong.
• The majority of demand will originate from Asia, where manufacturers of flat panel display glass have continued to invest heavily in new production capacity.
• The primary, or mine, production of rhodium will rise further, as will the amount of metal reclaimed from spent automotive catalysts.
• The rhodium price has risen predominantly on the back of increased use of the metal in autocatalysts manufactured for motor vehicles in the United States, Europe and Japan.

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