Mercury is extracted by heating cinnabar in a current

Mercury is extracted by heating cinnabar in a current of air and condensing the vapor. The equation for this extraction is

HgS + O2 → Hg + SO2

In 2005, China was the top producer of mercury with almost two-thirds global share followed by Kyrgyzstan.[30] Several other countries are believed to have unrecorded production of mercury from copper electrowinning processes and by recovery from effluents.

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