Hexyl-Mg or hexyl-Ca is no less hopeful than perchlorates as the precipitant in the brine or hexyl-salt is carried out industrially, but we have no details about it. This author etc. proposed the fuudamental study about the separation of K in brine or bittern as perchlorate, formerly. But for the industrial extraction of K in brine as hexyl-K, the collection of hexyl from the hexyl-K is the most important problem, Formerly, this author etc. asertained that much excess amount and high concentration of HCl and high temperature are neseccary for the decomposition of hexyl-K by only HCl, and so it was known that by only HCl this decomposition of Hexyl-K is hopeless industrially. moreover, this author fundamentally studied the application of many kinds of water-insoluble organic solvent on the decomposition of Hexyl-K in the place of such water-soluble organic solvent as acetone in Eng. Patent 667,511 and so, in this report.(I) what influences are brought into the extraction ratio of K, adhesion of Mg
++ and the loss of hexyl with the concentration and amount of the pre-cipitant when hexyl-Mg is used fon thr precipitant.(II) In the case of the application of ethyl-ether, n-propylalcohol+n-propyl-ether, n-Buthylalcohol+n-buthyl-ether, acetic buthyl-ester, n-amylalcohl and fuser oil, what influences are brought into the extraction ratio of K (as KCl soln.) from Hexyl-K with the concentration of HCl, the amont of HCl and the amount of organic solvent are discussed.
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