The high concentration of iodine in the caliche and the extensive mining made Chile the largest producer of iodine in 2007.
Most other producers use natural occurring brine for the production of iodine. The Japanese Minami Kanto gas field east of Tokyo and the American Anadarko Basin gas field in northwest Oklahoma are the two largest sources for iodine from brine. The brine has a temperature of over 60�C owing to the depth of the source. The brine is first purified and acidified using sulfuric acid, then the iodide present is oxidized to iodine with chlorine. An iodine solution is produced, but is dilute and must be concentrated. Air is blown into the solution, causing the iodine to evaporate, then it is passed into an absorbing tower containing acid where sulfur dioxide is added to reduce the iodine. The hydrogen iodide (HI) is reacted with chlorine to precipitate the iodine. After filtering and purification the iodine is packed.[13][14]
There is a large Iodine plant at Vici,Oklahoma gitrib
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Today's Featured Article - Dad's Old Silver King and Joe Capalco - by Woody E. Diehl. My father, Charles Diehl, grew up in the Elsworth, Ohio area during the Depression on a small working farm. I never saw the place, nor was I around during his early years. What I know about those hard times comes from listening to Dad and his old pals reminisce from time to time. One of the old timers that would sit with Dad and chew the fat about the 'good ole days' was Joe Capalco. Joe wasn't like most of my Dad's friends. He rarely worked that we knew of. Always had plenty of time
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