Cobalt is a hard, silvery white, shiny, brittle ferromagnetic element. Is a member of the eighth group of the periodic table. This element is chemically active and forms many compounds. Cobalt is stable in air and is not affected by water, but is slowly attacked by dilute acids.
Due to the fact that a lot of waste is produced in zinc production lines, it is very important and economical to recover the valuable elements of this waste. One of the most important of these wastes is hot filtration filter or cobalt filter.
- In many alloys (superalloys for gas turbine engine parts, corrosion resistant alloys, high speed steels, cement carbides)
- In magnets and magnetic recording media
- As a catalyst for the petroleum and chemical industries
- As drying agents for paints
- Cobalt blue ink
- In Chinese industries, pottery, stained glass, tiles and enamel jewelry
- Use of radioactive isotopes (cobalt-60) in medical treatment and irradiation to preserve food and protect the consumer