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AssigneeAkzo Nobel Chemicals International B.V.
InventorsMikael Ivar WIDELL, John André JANIAK, Jan Olof GUSTAFSSON, Henrik NORDBERG
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The present invention relates to a process to treat magnetite ore containing less than 15 wt % of silica on total ore, the process containing a step of (froth) flotating in the presence of a collector composition that contains 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine is an alkylethermonoamine with a degree of branching higher than 1, the alkyl containing 11 to 17 carbon atoms, and further relates to the collector composition that can be used in the process.
Process to treat magnetite ore containing less than 15 wt % of silica on total ore solids, the process containing a step of (froth) flotating in the presence of a collector composition that contains 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine is an alkylethermonoamine with a degree of branching higher than 1, the alkyl containing 11 to 17 carbon atoms.
Collector composition containing 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine is an alkylethermonoamine with a degree of branching higher than 1 and contains between 0 and 30 wt % isotridecyl(C13)etherpropylamine, 0 and 30 wt % of isododecyl(C12)etherpropylamine, 50 and 100 wt % of isoundecyl(C11)-etherpropylamine, 0 and 30 wt % of isodecyl(C10)etherpropylamine, 0 and 30 wt % tetradecyl(C14)etherpropylamine, all wt % being based on total weight of alkylethermonoamine.
Dependencies are inferred from the claim text.