Patent ID: 8124046

Claim:
A method for producing an alkali metal iodide salt solution including combusting a liquid for combustion so as to combust a combustible component of the liquid for combustion; and subsequently cooling a resultant gas containing a decomposition product, comprising: (a) providing a liquid containing (i) an alkali metal iodide salt, (ii) an inorganic-salt-forming substance capable of forming, at combustion, an inorganic salt containing an alkali metal and (iii) an organic compound; (b) adding to the liquid a deposition solvent to deposit the inorganic-salt-forming substance; (c) removing from the liquid the inorganic-salt-forming substance deposited in the step (b) so as to obtain the liquid for combustion; (d) combusting the liquid for combustion to form a resultant gas containing a decomposition product and subsequently cooling the resultant gas containing the decomposition product to produce the alkali metal iodide salt solution; and wherein the organic compound (iii) comprises an organic solvent, and the method further comprises distilling off the organic solvent in the liquid before or after the step (b).