Patent · US Expired

Process and composition for the froth flotation beneficiation of iron minerals from iron ores

US4732667A · kind A · utility

14Cited by

6References

26Claims

0Family size

Assignee

Berol Kemi AB

Inventors

Martin Hellsten
Marie Ernstsson · Gothenburg, SE
Bo Idstrom · Stenungsund, SE

Key dates

Filing date	Feb 20, 1985
Grant date	Mar 22, 1988
Priority date	—
Expiry date	Feb 20, 2005

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB03D2203/02
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process and composition are provided for the froth flotation beneficiation of iron minerals from iron ores containing silicate and phosphate minerals, comprising as collectors a combination of a primary amine and a nitrogen compound containing an anionic group selected from methylene carboxylic acid, ethylene phosphoric acid and methylene phosphonic acid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.