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Minor Metals Glossary

Minor Metal-Cadmium

  1. Cadmium is a chemical element with symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Cadmium is soluble in acids but not alkalis. Cadmium is a soft, bluish-white metal present generally in zinc ore deposits as greenockite. The principal source of cadmium is zinc ore, sphalerite. Other sulphides and sulphosalts may also carry small amounts of metal.

  2. Applications: Cadmium is used to control the fissionable elements in nuclear reactors. Along with nickel, it is used in electrical storage batteries. The main use of cadmium is in electroplating where it can be applied as a very thin coating to protect iron, steel, copper alloys and other metals and alloys from corrosion.

  3. Cadmium Alloys: Cadmium-based bearing alloys are used in high-speed internal combustion engines. Copper-cadmium alloys possess high strength, high conductivity and high resistance to abrasion, and therefore, the alloys are used in electric transmission wires.

  4. Cadmium sulphide: It forms brilliant golden yellow, orange-red, or reddish brown pigments used in paint, enamel, soap, rubber, glass and ceramic glazes. Some cadmium salts are also used in photographic films and in lithography

  5. Cadmium Coated: The products are preferred for a wide range of critical and safety related applications in the aerospace, electrical, defence, mining, nuclear and offshore industries.

  6. Cadmium Plating: It is used mainly in the aviation and aerospace industries to protect fasteners exposed to hostile environments.

Major Producers of Refined Cadmium

  1. World Production: The world production of cadmium was estimated at 25,027 tonnes in 2014. Most of the world's primary cadmium was being produced mainly in China, Republic of Korea, Japan, Canada, Mexico, Kazakhstan, Russia, Peru, Netherland, Poland, Australia, Bulgaria and USA.

  2. China: As a major cadmium producers, China produced 7400 metric tonnes in 2016 and the production dropped by 2.63 percent as compared to the previous year production of 7600 metric tonnes. The country shares 31.68 percent to the total global cadmium production.

  3. South Korea: In 2016, South Korea produced 4500 metric tonnes of refined cadmium and the production increased by 7.14 percent as compared to the previous year production of 4200 thousand metric tonnes. The country contributes 18.37 percent to the total global refined cadmium production.

  4. Japan: The country produced 1900 metric tonnes of refined cadmium in 2016 and the production declined by 3.06 percent as compared to the previous year production of 1960 metric tonnes. Japan shares 8.15 percent to the total global refined cadmium production.

  5. Kazakhstan: In 2016, Kazakhstan produced 1500 metric tonnes of refined cadmium and the production remain unchanged as compared to the previous year production. The country shares 6.34 percent to the total global refined cadmium production.

  6. Russia:  In 2016, Russia produced 1350 metric tonnes of refined cadmium and the production increased by 3.85 percent as compared to the previous year. The countries contribution to the total global refined cadmium production is 5.6 percent.

  7. Mexico: In 2016, the country produced 1250 metric tonnes of refined cadmium and the production decreased by 3.85 percent as compared to the previous year production of 1300 metric tonnes. The country shares 5.39 percent to the total global production.

  8. Canada: The country produced 1140 metric tonnes refined cadmium in 2016 and the production dropped by 1.72 percent as compared to the previous year production of 1160 metric tonnes. Canada’s contribution to the total global refined cadmium production is 4.86 percent.

  9. Peru: Peru produced 760 metric tonnes of refined cadmium in 2016 and the production remained unchanged as compared to the previous day. Peru’s shares to the global refined cadmium production is 3.21 percent.

  10. Netherland: In 2016, the country produced 640 metric tonnes of refined cadmium in 2016 and the production remained unchanged as compared to the previous year. Netherland shares 2.7 percent to the global refined cadmium production.

  11. United States of America (USA): The US produced 550 metric tonnes of refined cadmium in 2016, and the production dropped by 8.33 percent as compared to the previous year. The US contribution to the global refined cadmium production is 2.42 percent.

  12. Poland: Poland produced 500 metric tonnes refined cadmium in 2016, while the production dropped by 20.63 percent as compared to the previous year production of 630 metric tonnes. Poland contribution to the total global refined production is 2.39 percent.

  13. Australia: In 2016, Australia produced 380 metric tonnes of refined cadmium and the production remained unchanged as compared to the previous year production. The country shares 1.61 percent to the total global refined cadmium production.

  14. Bulgaria: Bulgaria produced 300 metric tonnes of refined cadmium, while the production dropped by 2.13 percent as compared to the previous year. The country shares 1.39 percent to the total global refined cadmium production.