Process for froth flotation of silicate-containing iron ore

Details Process for froth flotation of silicate-containing iron ore Process for froth flotation of silicate-containing iron ore

B - Operations, Transporting

03

D

B03D 1/01 (2006.01) B03D 1/02 (2006.01)

Patent

CA 2249942

The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by carrying out, at a pH of 8-11, a froth flotation in the presence of a depressing agent for the iron mineral and a collecting agent containing a combination of an ether monoamine and an ether polyamine, which contain an aliphatic hydrocarbon group having 6-22 carbon atoms in a weight ratio of the ether monoamine to the ether polyamine of 1:4-4:1. The invention also discloses a composition which is suitable for use in the process.

La présente invention concerne un procédé d'enrichissement d'un minerai de fer à partir d'un minerai de fer contenant du silicate, cela en effectuant, à pH entre 8 et 11, une flottation par moussage en présence d'un dépresseur pour le minerai de fer ainsi que d'un agent collecteur renfermant une combinaison d'une monoamine d'éther et d'une polyamine d'éther, comportant un groupement hydrocarbure aliphatique de 6 à 22 carbones où le rapport monoamine d'éther/polyamine d'éther est de 1: 4 à 4:1. On divulgue également une composition pouvant être utilisée dans ce procédé.

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