Use of fatty amine salts in conjunction with fatty acids as auxiliary agents for the floatation of potassium salts (sylvinite)

Abstract

The invention relates to a composition which is effective as a flotation reagent for collecting and separating potash salt mixtures. The flotation reagent comprises A) at least one compound of the formula [R 1 —NH 3 ] + X − , where R 1 is a C 8 to C 22 alkyl radical and X − is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms.

1 . A process for the flotation of sylvinite, said process comprising contacting to a floatation pulp a mixture of 
 A) at least one compound of the formula     [R 1 —NH 3 ] + X −      where R 1  is a C 8 -C 22  alkyl radical and X −  is an anion, and    B) a branched fatty acid having a chain length of 8 to 22 carbon atoms.    
   
   
       2 . The process of  claim 1 , wherein R 1  has a chain length of 12 to 20 carbon atoms.  
   
   
       3 . The process of  claim 1 , wherein X is an anion selected from the group consisting of chloride, formate, acetate, and mixtures thereof anion.  
   
   
       4 . The process of  claim 1 , wherein constituent A is stearylamine acetate.  
   
   
       5 . The process of  claim 1 , wherein constituent B is a branched carboxylic acid having 14 to 22 carbon atoms.  
   
   
       6 . The process of  claim 1 , wherein constituent B is isostearic acid.  
   
   
       7 . The process of  claim 1 , wherein the mixing ratio of A:B is 90:10 to 10:90.  
   
   
       8 . The process of  claim 1 , wherein said mixture further comprises additional components selected from the group consisting of glycols, residues from oxoalcohol synthesis, water, and mixtures thereof.  
   
   
       9 . The process of  claim 1 , wherein said flotation pulp comprises 10 to 500 g/t of said mixture.  
   
   
       10 . A composition effective as flotation reagent comprising 
 A) at least one compound of the formula     [R 1 —NH 3 ] + X −      where R 1  is a C 8 -C 22  alkyl radical and X −  is an anion, and    a branched fatty acid having a chain length of 8 to 22 carbon atoms.