![]() ![]() Cobalt is principally mined as a by-product of nickel and copper mining.The Democratic Republic of the Congo (DRC) holds over 50% of global reserves and is responsible for around 50% of global Cobalt production.Cobalt sources have changed throughout history, from Norway, Sweden, Hungary and Germany (Saxony) to a dependence on the African Copper Belt from the 1970s.They are similar in strength to neodymium magnets but have higher temperature resistance and coercivity (resistance to demagnetization). In 1966, the first samarium-Cobalt rare-earth magnets were developed, and in 1972, they were improved by Albert Gale and Dilip K.However, it was soon discovered that a combination of Cobalt, high alcohol intake and bad diet led to a high risk of heart failure. In the mid-20th century, some breweries used Cobalt as a beer additive because it helped to maintain foamy head.In the early 1900s, wear-resistant Cobalt alloys were developed.He was able to show that Cobalt was the source of the blue color in glass, which previously had been attributed to the bismuth found with Cobalt. Brandt demonstrated that the pigment contained a new element, later named Cobalt. In 1735, Swedish chemist Georg Brandt (1694-1768) analyzed a dark-blue pigment found in copper ore.In the Middle Ages, Cobalt was used in the manufacture of smalt, a blue colored glass produced by melting a mixture of the roasted mineral smaltite, quartz and potassium carbonate, yielding a dark-blue silicate glass that is finely ground.The oldest Cobalt colored glass was found in Egypt and dated from between 1550-1292 BCE.Cobalt has been found in ancient Roman and Persian jewelry, Egyptian sculpture, in the ruins of Pompeii and in China’s Ming and Tang Dynasties. Cobalt has been utilised by man for at least the last 2,600 years, providing blue pigments for glassware and ceramics.The other two naturally magnetic metals are iron and nickel. Cobalt is one of only three naturally occurring magnetic metals, making it very useful for the uniquely calibrated magnets found in generators and hard drives.Where does Cobalt come from? Why is it so important? Read on for 20 interesting facts about the “transition metal”, Cobalt! Cobalt is both an essential biological and industrial metal, considered an important strategic mineral by counties around the world, but most of us know little about this semi-precious metal. ![]()
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