synthesis of new anionic surfactants and their use as collectors in froth flotation of sulphide minerals not

摘要

the present invention relates to a compound which can be obtained by the reaction of an acyl neutral amino acid n - or salt thereof.or an oligopeptide of n-acyl neutral amino acid or a salt thereof with a monohydroxy monocarboxylic acid or a salt of it.this compound is useful as a collector in flotation process for foaming, non sulfide minerals, especially phosphate ores.the invention also relates to a method, which comprises the steps of: (a) to make a paste of phosphate ore.the ore mineral of phosphate containing calcium phosphate or a mixture of mineral and gangue minerals.with an effective amount of a reactive calcium phosphate mineral collector, which is composed of,, and, optionally, other aid in flotation.(b) to carry out a process of froth flotation to recover the mineral / mineral and calcium phosphate.