| 摘要 |
<p>1. Process for the treatment of a carnallitic ore in which the said ore is brought into contact with a decomposition solution containing an appropriate concentration of MgCl2 , KCl and NaCl so as to form an extraction solution saturated with NaCl and KCl and to precipitate artificial sylvinite, characterized in that, after separation of the said sylvinite from the extraction solution, at least a part of the latter is depleted in KCl by cooling and the reheated resulting solution, which is then undersaturated with KCl, is added to the solvent employed to form the said decomposition solution and/or to a residual part of the said extraction solution which is not depleted in KCl in such proportions that the said carnallite decomposition solution is reconstituted and that the said reconstituted solution is employed to continue the treatment.</p> |
