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US 12,240,000 B2Granted
Iron chelators as activators in alkaline flotation circuits
AssigneeBASF SE
InventorsAdrian Mauricio Villanueva Berindoague, Dale Barron, Daniel Chipfunhu, Alexej Michailovski, Scott Alexander Dickie, Marta Reinoso Garcia, Deris Prawira
Life of this patent
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Abstract
The present invention is directed to a method for selectively recovering a mineral from an ore applying a promoter being a substituted ethylene diamine. Further, the present invention is directed to the use of said substituted polymeric alkylenediamine to separate a target mineral from an ore.
Claims11
A method for selectively recovering a mineral from an iron comprising ore, comprising:
- i) grinding the iron comprising ore,
- ii) preparing a pulp of the ground ore obtained in step i),
- iii) adding at least one promoter comprising at least one substituted polymeric alkylene diamine as an iron chelator to the pulp obtained in step ii), wherein the at least one substituted polymeric alkylene diamine is a substituted polymeric ethylene diamine of formula (IIb)
- wherein m is in the range of 1 to 150, the substituents R5 are independently from each other H, Li, Na or K, and * is Z2N, where Z is independently from each other
- Y is a carboxylate (—COOR5), sulfonate (—SO3R6), sulfate (—O—SO3R7), phosphonate (—P(═O)(OR8)(OR9), phosphate (—O—P(═O)(OR10)(OR11) carboxylic acid (—COOH), sulfonic acid (—SO3H), phosphonic acid (—P(═O)(OH)2), phosphoric acid (—O—P(═O)(OH)2) moiety, or their deprotonated forms,
- R5, R6 and R7 are independently from each other H, alkyl, aryl, alkylaryl or arylalkyl, Li, Na or K, R8 and R10 are independently from each other alkyl, aryl, alkylaryl or arylalkyl, and
- R9 and R11 are independently from each other H, alkyl, aryl, alkylaryl or arylalkyl;
- and
- iv) subjecting the pulp containing the at least one promoter obtained in step iii) to froth flotation.
6 more elements
A method of using at least one promoter to separate a target mineral from an iron comprising ore, comprising:
- i) grinding the iron comprising ore;
- ii) preparing a pulp of the ground iron comprising ore;
- iii) combining the pulp with at least one promoter comprising at least one substituted polymeric alkylene diamine as an iron chelator to the pulp obtained in step ii), wherein the at least one substituted polymeric alkylene diamine is a substituted polymeric ethylene diamine of formula (IIb)
- wherein, m is in the range of 1 to 150, the substituents R5 are independently from each other H, Li, Na or K and * is Z2N, where Z is independently from each other
- Y is a carboxylate (—COOR5), sulfonate (—SO3R6), sulfate (—O—SO3R7), phosphonate (—P(═O)(OR8)(OR9)), phosphate (—O—P(═O)(OR10)(OR11)), carboxylic acid (—COOH), sulfonic acid (—SO3H), phosphonic acid (—P(═O)(OH)2), phosphoric acid (—O—P(═O)(OH)2) moiety, or their deprotonated forms,
- R5, R6 and R7 are independently from each other H, alkyl, aryl, alkylaryl or arylalkyl, Li, Na or K, R8 and R10 are independently from each other alkyl, aryl, alkylaryl or arylalkyl, and
- R9 and R11 are independently from each other H, alkyl, aryl, alkylaryl or arylalkyl;
- and
- iv) subjecting the pulp containing the at least one promoter to froth flotation to separate the target mineral from the ore.
6 more elements
Dependencies are inferred from the claim text.