, Cobalt is also a constituent of tobacco smoke. It is magnetic.It is a hard metal. Metallic cobalt occurs as two crystallographic structures: hcp and fcc. Cobalt is also a catalyst in the Fischer–Tropsch process for the hydrogenation of carbon monoxide into liquid fuels. Sources of Cobalt for many ocean bodies include rivers and terrestrial runoff with some input from hydrothermal vents. Cobalt naturally occurs in nickel-bearing laterites and nickel-copper sulfide deposits and, thus, is most often extracted as a by-product of nickel and copper. Boiling point: 5,301 F (2,927 C) 8.  By 2015, Democratic Republic of the Congo (DRC) supplied 60% of world cobalt production, 32,000 tons at $20,000 to $26,000 per ton. It dissolves slowly in acids.This reaction makes hydrogen and a salt of cobalt. It is ferromagnetic up to 1,121 °C (2,050 °F, the highest known Curie point of any metal or alloy) and may find application where magnetic properties are needed at elevated temperatures. Georg Brandt first showed cobalt to be a new metal in: G. Brandt (1735) "Dissertatio de semimetallis" (Dissertation on semi-metals), Donaldson, John D. and Beyersmann, Detmar (2005) "Cobalt and Cobalt Compounds" in, Central African Mining and Exploration Company, Occupational Safety and Health Administration, National Institute for Occupational Safety and Health, International Agency for Research on Cancer, Economy of the Democratic Republic of the Congo, Mining industry of the Democratic Republic of the Congo, "Atomic weights of the elements 2013 (IUPAC Technical Report)", "Electric car future spurs Cobalt rush: Swelling demand for product breathes new life into small Ontario town", "Cobalt oxide surface chemistry: The interaction of CoO(100), Co3O4(110) and Co3O4(111) with oxygen and water", "Zur Kenntnis des asymmetrischen Kobaltatoms.  Electromagnets are commonly used in electric motors and generators. , Cobalt is used in external beam radiotherapy, sterilization of medical supplies and medical waste, radiation treatment of foods for sterilization (cold pasteurization), industrial radiography (e.g. These samarium cobalt magnetic discs are made of an alloy of samarium and cobalt. Superalloys, such as stellite, are the largest consumer of cobalt metal, accounting for about 20% of demand. Answers: 2, question: answers I believe the correct answer is Cobalt, D. Which element is magnetic? Pressure leaching with air, sulfuric acid, and ammonia recover more nickel before cobalt powder is added as a seed to precipitate cobalt in a hydrogen gas atmosphere.  Nickel-cadmium (NiCd) and nickel metal hydride (NiMH) batteries also include cobalt to improve the oxidation of nickel in the battery. Coenzyme B12 features a reactive C-Co bond that participates in the reactions.  Cobalt alloys are also used for dental prosthetics as a useful substitute for nickel, which may be allergenic. A subsidiary of Zhejiang Huayou Cobalt, one of the world's largest cobalt producers, Congo DongFang supplied cobalt to some of the world's largest battery manufacturers, who produced batteries for ubiquitous products like the Apple iPhones. The use of CoCr rods in spinal fusion is relatively new, and there is no study in the existing world literature assessing the artifact caused by … , The "coast disease" of sheep in the Ninety Mile Desert of the Southeast of South Australia in the 1930s was found to originate in nutritional deficiencies of trace elements cobalt and copper. Many people want to understand how to use them, so we wrote this guide. 7-18-00 Sections 20.13-20.14 Ferromagnets. concrete density measurements), and tank fill height switches.  Cobalt-based alloys are also corrosion- and wear-resistant, making them, like titanium, useful for making orthopedic implants that don't wear down over time. , However, chronic cobalt ingestion has caused serious health problems at doses far less than the lethal dose. Cobalt is a trace metal involved in photosynthesis and nitrogen fixation detected in most ocean basins and is a limiting micronutrient for phytoplankton and cyanobacteria. Cobalt chemicals are used in the metallic cathodes of rechargeable batteries, as well as in petrochemical catalysts, ceramic pigments, and glass decolorizers. The Mukondo Mountain project, operated by the Central African Mining and Exploration Company (CAMEC) in Katanga Province, may be the richest cobalt reserve in the world. Cobalt also has valuable catalytic properties. Transparency Market Research estimated the global lithium-ion battery market at $30 billion in 2015 and predicted an increase to over US$75 billion by 2024. The… Davis, Joseph R. ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys. Phase at room temperature: Solid 6. Another important use for cobalt is in wear-resistant alloys (e.g., Vitallium), which can be found in orthopedic and dental implants, as well as prosthetic hips and knees.  Co is recycled in the ocean by decaying organic matter that sinks below the upper ocean, although most is scavenged by oxidizing bacteria. Cobalt-based superalloys have historically consumed most of the cobalt produced. , Although far less common than other metalloproteins (e.g. , Human rights activists have alleged, and investigative journalism reported confirmation, that child labor is used in mining cobalt from African artisanal mines. Medical Definition of cobalt : a tough lustrous silver-white magnetic metallic element that is related to and occurs with iron and nickel and is used especially in … It has been used since the Middle Ages to make smalt, a blue-colored glass. Alloys of iron are called ferrous and those without iron are called non-ferrous. In this process, sulfide concentrate containing less than 1% cobalt is pressure leached at high temperatures in an ammonia solution. Object: Cobalt-chromium alloy (CoCr) rods haves some preferred biomechanical properties over titanium rods for spinal fixation. Samarium Cobalt magnets and Neodymium Iron Boron magnets are important Rare Earth Magnets. MeB12 promotes methyl (−CH3) group transfers. Cobalt is normally in its +2 oxidation state as an ion.Some chemical compounds contain cobalt ions in its +4 oxidation state. It causes respiratory problems when inhaled.  It is also alloyed with 95% platinum for jewelry, yielding an alloy suitable for fine casting, which is also slightly magnetic. , The United States Geological Survey estimates world reserves of cobalt at 7,100,000 metric tons. , Changes that Congo made to mining laws in 2002 attracted new investments in Congolese copper and cobalt projects. In the existing soft magnetic materials, the alloy has the highest saturation magnetic induction (2.4T) and a high Curie point (940℃). This process helps to clean petroleum of sulfur impurities that interfere with the refining of liquid fuels.. It is alloyed with aluminium and nickel to make particularly powerful magnets. Research Laboratories, Johnson Matthey & Co Limited The magnetic properties of the 50 atomic per cent cobalt-platinum alloy are quite exceptional; it is one of the most powerful permanent magnetic materials available, and it is readily fabricated. Cobalt refining often takes place outside of the country where the ore or cobalt concentrate is initially produced. Iron is more reactive and copper is less reactive.  Exploration in 2016–2017 included the area around Cobalt, Ontario, an area where many silver mines ceased operation decades ago. The temperature at which a metal loses magnetic force is called its Curie temperature. 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