SKUMFLOTATIONSFOERFARANDE SAMT SAMLARE.

摘要

A froth flotation process in which an amphoteric compound is used as a collector for oxide and salt type minerals. The amphoteric compound has the formula I in which R is a hydrocarbon group having 4 to 18 carbon atoms; n is 0 or 1;; p is a number from 0 to 5; and R1 is a hydrocarbon group having 5 to 18 carbon atoms or the group in which R, n and p have the above mentioned meaning; or a salt thereof.