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    STUDIA GEOLOGIA - Issue no. 1 / 2002  
         
  Article:   THE SEPARATION AND THE CONCENTRATION OF MINERALS FROM THE ZEOLITIC VOLCANIC TUFFS. ANALYTICAL CONSIDERATIONS.

Authors:  DUMITRU BULGARIU.
 
       
         
  Abstract:  The separation and concetration of minerals from zeolitic volcanic tuffs represent one of the problems for which the literature not offer, to much practically solutions. The experimental strategy used by as, for the separation minerals from zeolitic volcanic tuffs to comprise the following methods: heavy liquids separation; magnetic separation and electrophoresis separation. For zeolites, silica polymorphs, feldspars and other minerals separated from zeolitic volcanic tuffs, the work eighth conditions and the proper experimental strategy efficiency has been estabilish. The purity for mineral fractions can be separated has been between 95.0 ľ 99.6 %.  
         
     
         
         
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