High-temperature roasting of leucite in the presence of CaCl2 gives rise to a reaction that results in almost complete recovery of its potassium content as KCl. A solid residue consisting mainly of anorthite and silica is also obtained; this could be used as raw material for the production of hydraulic binders. The process is of economic interest because of the relatively low temperatures involved and especially the low cost of the reagents employed, since these find no other valid industrial application at present. Potassium chloride, cordierite and silica are obtained if MgCl2 is used instead of calcium chloride.
COMPLETE BENEFICIATION OF LEUCITE BY THERMAL-TREATMENT / Piga, Luigi; F., Pochetti. - In: INTERNATIONAL JOURNAL OF MINERAL PROCESSING. - ISSN 0301-7516. - 34:4(1992), pp. 275-287. [10.1016/0301-7516(92)90053-y]
COMPLETE BENEFICIATION OF LEUCITE BY THERMAL-TREATMENT
PIGA, LUIGI;
1992
Abstract
High-temperature roasting of leucite in the presence of CaCl2 gives rise to a reaction that results in almost complete recovery of its potassium content as KCl. A solid residue consisting mainly of anorthite and silica is also obtained; this could be used as raw material for the production of hydraulic binders. The process is of economic interest because of the relatively low temperatures involved and especially the low cost of the reagents employed, since these find no other valid industrial application at present. Potassium chloride, cordierite and silica are obtained if MgCl2 is used instead of calcium chloride.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
