Precious metal recycling_ Introduction to Rhodium, a Rare and Precious Metal

The History of Rhodium Metal:

Rhodium is a rare silver white precious metal that is highly valued for its strength, luster, and corrosion resistance. Its Chemical symbol is Rh, its Atomic number is 45, and its Atomic mass is 102.9055. Rhodium has a melting point of 2237F (1234C) and a boiling point of 4982F (2745C). It belongs to the platinum metal family and is often used as a polishing agent for jewelry and other valuable items. Rhodium is also used in the production of automotive catalytic converters, as well as optical and electronic products.

In 1803, British chemist and physicist William Hyde Wollaston discovered Rhodium. He separated this metal by dissolving platinum ore in aqua regia, which is a mixture of nitric acid and hydrochloric acid. After analyzing the solution with a Beam splitter, he noticed a bright line in the spectrum that he had never seen before. The bright line is metal rhodium, named after the Greek word "rodon" for rose.

Application of rhodium metal:

1. Rhodium is a hard and fragile metal that can be polished to a mirror like surface. It is highly resistant to acid and alkali corrosion and is very suitable for chemical processing, electroplating, and other industrial processes. Rhodium also has strong reflectivity, so it is used in optical devices and other applications where reflectivity is important.

2. In order to manufacture stronger and more durable materials, rhodium is usually alloyed with other metals. For example, it can be alloyed with copper to form a material called copper alloy, which is used for electronic components and connectors.

3. In addition to its various industrial uses, rhodium is also used for some medical purposes. For example, it is used to treat patients with Rheumatoid arthritis and is studied as a treatment for cancer.

4. Rhodium is also commonly used in jewelry. Its high reflectivity gives it a beautiful surface treatment that can be used to enhance the appearance of rings, necklaces, and other components. Rhodium plating is usually used to provide a hard protective layer to prevent discoloration and scratches.

Rhodium metal is generally not naturally found in pure form, but is extracted from ores containing other metals. The largest source of rhodium is South Africa, which accounts for over 80% of the world's supply. Other sources of rhodium include Canada, Russia and the United States. Due to its rarity and many industrial applications, rhodium is one of the most valuable metals. It is very popular among investors, and its high price makes it known as the "King of Metals". As demand for rhodium increases, its price is also rising, making it a potentially profitable investment metal.

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