EP4399029A1 - Composition et procédé d'utilisation d'acides 1-alkyl-5-oxopyrrolidine-3-carboxyliques comme collecteurs pour la flottation de phosphate et de lithium - Google Patents

Composition et procédé d'utilisation d'acides 1-alkyl-5-oxopyrrolidine-3-carboxyliques comme collecteurs pour la flottation de phosphate et de lithium

Info

Publication number
EP4399029A1
EP4399029A1 EP22750814.0A EP22750814A EP4399029A1 EP 4399029 A1 EP4399029 A1 EP 4399029A1 EP 22750814 A EP22750814 A EP 22750814A EP 4399029 A1 EP4399029 A1 EP 4399029A1
Authority
EP
European Patent Office
Prior art keywords
alkyl
oxopyrrolidine
flotation
alkenyl
carboxylic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22750814.0A
Other languages
German (de)
English (en)
Inventor
Dirk Leinweber
Adriana GROSSMANN
'Wagner Claudio DA SILVA
Leandro Seixas Bicalho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clariant International Ltd
Original Assignee
Clariant International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/470,795 external-priority patent/US20230091787A1/en
Application filed by Clariant International Ltd filed Critical Clariant International Ltd
Publication of EP4399029A1 publication Critical patent/EP4399029A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/008—Organic compounds containing oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/01—Organic compounds containing nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B03D1/021—Froth-flotation processes for treatment of phosphate ores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores
    • B03D2203/06—Phosphate ores

Definitions

  • This invention relates to the separation of phosphate and lithium minerals by means of flotation from crude ores or preconcentrates using fatty acids as collecting agents and at least one 1-alkyl-5-oxopyrrolidine-3-carboxylic acid or 1-alkenyl-5-oxopyrrolidine-3-carboxylic acid or a mixture thereof as a co-collector.
  • Phosphate and lithium minerals are found usually together with worthless gangue minerals, for example silicate minerals and carbonate minerals, such as quartz and calcite.
  • gangue minerals for example silicate minerals and carbonate minerals, such as quartz and calcite.
  • the separation of the gangue minerals from phosphate and lithium minerals is performed by flotation. Flotation usually requires a collector to be present.
  • Collecting agents can be described as organic-chemical compounds which, in addition to one or more non-polar hydrocarbon radicals, carry one or more chemically active polar groups which are capable of being adsorbed on active centers of the mineral and thus rendering the latter hydrophobic.
  • Further steps in preparing phosphate and lithium ore for flotation can represent a preparation of worthless material on the one hand, for example by a heavy medium separation (separating off relatively coarse constituents), and on the other hand, desliming (separating off ultrafine of the finest particles).
  • the removal of magnetic minerals, which are almost always present for both ore types, by means of magnetic separation is also a possible preconcentrating method.
  • the invention is not limited to flotation processes preceded by a preconcentration step.
  • the present invention relates to the direct flotation of the phosphate and lithium minerals, but it can also follow a preceding reverse flotation step which, for example, represents a flotation of silicate-type minerals by means of cationic collecting agents.
  • a large number of anionic and amphoteric chemical compounds are known as collecting agents for phosphate minerals, and these include, for example, unsaturated fatty acids (oleic acid, linoleic acid, linolenic acid) and the sodium, potassium or ammonium soaps thereof, monoalkyl and dialkyl phosphates, alkanesulfocarboxylic acids, alkylarylsulfonates, acylaminocarboxylic acids and alkylaminocarboxylic acids.
  • collecting agents are known which are adducts of sulfosuccinic acid (see, for example US-4207178, US-4192739, US-4158623 and US-4139481). Many of these classes of chemical compounds, however, suffer from unsatisfactory selectivity which does not allow the production of saleable phosphate concentrations or makes it necessary to use a relatively large quantity of regulating reagents, especially depressants for the gangue minerals.
  • the flotation output can be improved by using, in addition to the collecting agent (a fatty acid), a dispersing agent, such as, for example, a nonyl phenol with 2 - 5 mol of ethylene oxide (EO) and an aliphatic alkoxylated alcohol with the chain length C11-C15 which contains 2 - 4 mol of EO.
  • a dispersing agent such as, for example, a nonyl phenol with 2 - 5 mol of ethylene oxide (EO) and an aliphatic alkoxylated alcohol with the chain length C11-C15 which contains 2 - 4 mol of EO.
  • EO ethylene oxide
  • alkoxylated nonyl phenols are regarded as questionable from the standpoint of environmental protection and toxicology. There is a tendency to avoid the use of alkoxylated nonyl phenols in flotation operations and to use a suitable replacement therefore
  • the instant invention is therefore concerned with finding compositions which are useful as collecting agents for phosphate and lithium flotation.
  • 1-alkyl-5-oxopyrrolidine-3-carboxylic acids or 1 -alkenyl-5- oxopyrrolidine-3-carboxylic acid or a mixture thereof may be used as a co-collector together with fatty acids, whereby the P2O5 and Li2O recovery is improved with respect to the use of only fatty acids.
  • One embodiment of the instantly claimed invention provides a flotation agent for phosphate and lithium ore, comprising a collecting agent composition which contains at least one fatty acid and at least one 1 -alkyl-5-oxopyrrolidine-3- carboxylic acid or 1 -alkenyl-5-oxopyrrolidine-3-carboxylic acid according to Formula 1 .
  • the technical effect of the at least one 1-alkyl-5-oxopyrrolidine-3-carboxylic acid or 1 -alkenyl-5-oxopyrrolidine-3-carboxylic acid or a mixture thereof present in the flotation agent is that it is a co-collector for phosphate and lithium ores.
  • the expressions co-collector will relate to the 1 -alkyl-5-oxopyrrolidine-3- carboxylic acid or 1 -alkenyl-5-oxopyrrolidine-3-carboxylic acid or a mixture thereof.
  • R is preferably a Cn to C19, more preferably a C13 to C18 residue.
  • R is a Cn to C19, more preferably a C12 to C17 alkenyl residue having at least one double bond.
  • the technical effect of the fatty acid present in the flotation agent is that it is a collector for phosphate and lithium ores.
  • the fatty acid which makes up the main constituent of the flotation agent according to the invention is preferably a linear or branched monocarboxylic acid having 8 to 26 carbon atoms.
  • the fatty acids known in the prior art as collectors can be used.
  • the amount of fatty acid is 70 to 99, particularly 80 to 95, especially 85 to 90 wt.-% of the total flotation agent weight.
  • the flotation agent according to the invention comprises between 1 and 30%, particularly 5 to 20%, especially 10 to 15% by weight of the 1 -alkyl-5- oxopyrrolidine-3-carboxylic acid or 1-alkenyl-5-oxopyrrolidine-3-carboxylic acid or a mixture thereof of co-collector, based on the total flotation agent weight.
  • the flotation agent according to the invention is preferably used in amounts from 100 to 1000 g/t of solid ore for the flotation of phosphate ores.
  • the amount of co-collector agent according to the invention added in the case of separate collector dosing is preferably between 100 and 350 g/t, in particular between 150 and 300 g/t of solid ore.
  • the flotation agent according to the invention can, in addition to said constituents of fatty acid and 1-alkyl-5-oxopyrrolidine-3-carboxylic acid or 1-alkenyl-5- oxopyrrolidine-3-carboxylic acid or a mixture thereof, comprise known depressants or further constituents.
  • Such constituents are, for example, foaming agents and aliphatic polyglycol ethers.
  • Another aspect of this invention is the use of at least one fatty acid and at least one compound of formula (I) in admixture as flotation agents for phosphate and lithium ores.
  • Another aspect of this invention is a process for flotating phosphate and lithium ores, the process comprising the step of adding the flotation reagent comprising at least one fatty acid and at least one compound of formula (I) to an aqueous suspension of the ore, and aerating the so obtained mixture.
  • a crude soy oil fatty acid was heated to around 60°C until all solids are molten and are subsequently homogenized.
  • a 1-alkyl-5-oxopyrrolidine-3-carboxylic acid or 1-alkenyl-5-oxopyrrolidine-3-carboxylic acid or a mixture thereof was heated to around 60°C until all solids are molten and are subsequently homogenized.
  • Froth flotation experiments were conducted using a Denver laboratory flotation cell. 1 .00 kg of ground ore was conditioned by stirring at 1100 rpm with 0.66 liter of water (solids content of the pulp 60 wt-%). A depressant (maize com caustic starch) and the above described collector was added and conditioning continued for 5 minutes thereafter. The solids content of the pulp was adjusted to 30% by adding water. The pH was adjusted to 9.0 and the mixture was stirred for 1 minute. The stirring was adjusted to 1400 rpm, the air intake was opened, and the ore was floated for 3 minutes, obtaining the rougher concentrate (froth) and rougher tailing (remaining ore in the cell).
  • the rougher concentrate was returned to the flotation cell and was floated again, without adding collector, for 2 minutes at 1000 rpm, obtaining the cleaner concentrate (phosphate concentrate) and cleaner tailing.
  • Collecting Agent Formulations P2 to P17 were compared to the pure Fatty Acid (Collecting Agent Formulation P1 ).
  • the concentration of fatty acid can be reduced, relative to the comparison product, from 100% to 85% thereby improving the recovery and keeping the P2O5 in acceptable grade.
  • P2O5 in acceptable grade means a target of > 35.8 weight-% P2O5.
  • Froth flotation experiments were conducted using a Denver laboratory flotation cell. 0.8 kg of ground ore was conditioned by stirring at 1500 rpm with 0.8 liter of water (solids content of the pulp 50 wt-%). Collector was added and conditioning continued for 7 minutes thereafter. The pH was adjusted to 10.0 and the mixture was stirred for 1 minute.
  • the stirring was adjusted to 1300 rpm, the air intake was opened, and the ore was floated for 7 minutes, obtaining the rougher concentrate (froth) and rougher tailings.
  • the rougher concentrate and rougher tailing are dried at 105 ⁇ 5°C, were weighed and analysed to determine their lithium grade by ICP-OES method.
  • Collecting Agent Formulation L2 to L17 The efficiency of Collecting Agent Formulations based on 1-alkyl-5-oxopyrrolidine- 3-carboxylic acid or 1-alkenyl-5-oxopyrrolidine-3-carboxylic acid or a mixture thereof (Collecting Agent Formulation L2 to L17) were compared to the pure Fatty Acid (Collecting Agent Formulation L1 ).
  • the concentration of fatty acid can be reduced, relative to the comparison product, from 100% to 85% thereby improving the recovery and keeping the Li2O in acceptable grade.
  • Li2O in acceptable grade means a target of > 4.0 weight-% l_i2O, considering the rougher concentrate.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

La présente invention concerne un agent de flottation pour minerai de lithium ou de phosphate, comprenant au moins un acide gras et au moins un acide 1-alkyl-5-oxopyrrolidine-3-carboxylique ou un acide 1-alcényle-5-oxopyrrolidine-3-carboxylique ou un mélange de ceux-ci de formule (1) dans laquelle R est un groupe alkyle ou alcényle en C7 à C21, la quantité d'acide gras étant de 70 à 99 % en poids, et la quantité de l'acide 1-alkyl-5-oxopyrrolidine-3-carboxylique ou de l'acide 1-alcényl-5-oxopyrrolidine-3-carboxylique de formule (I) étant de 1 à 30 % en poids.
EP22750814.0A 2021-09-09 2022-07-13 Composition et procédé d'utilisation d'acides 1-alkyl-5-oxopyrrolidine-3-carboxyliques comme collecteurs pour la flottation de phosphate et de lithium Pending EP4399029A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US17/470,795 US20230091787A1 (en) 2021-09-09 2021-09-09 Composition And Method For Use Of 1-Alkyl-5-Oxopyrrolidine-3-Carboxylic Acids As Collectors For Phosphate And Lithium Flotation
EP21199322 2021-09-28
PCT/EP2022/069546 WO2023036498A1 (fr) 2021-09-09 2022-07-13 Composition et procédé d'utilisation d'acides 1-alkyl-5-oxopyrrolidine-3-carboxyliques comme collecteurs pour la flottation de phosphate et de lithium

Publications (1)

Publication Number Publication Date
EP4399029A1 true EP4399029A1 (fr) 2024-07-17

Family

ID=82786440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22750814.0A Pending EP4399029A1 (fr) 2021-09-09 2022-07-13 Composition et procédé d'utilisation d'acides 1-alkyl-5-oxopyrrolidine-3-carboxyliques comme collecteurs pour la flottation de phosphate et de lithium

Country Status (7)

Country Link
EP (1) EP4399029A1 (fr)
AR (1) AR126575A1 (fr)
AU (1) AU2022342271A1 (fr)
CA (1) CA3232104A1 (fr)
CL (1) CL2024000691A1 (fr)
PE (1) PE20240543A1 (fr)
WO (1) WO2023036498A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757125A (en) * 1952-05-16 1956-07-31 Colgate Palmolive Co N-higher alkyl-4-carboxy-2-pyrrolidones and compositions therewith
US3224975A (en) * 1962-12-03 1965-12-21 Ethyl Corp Lubricating oil compositions
US3859208A (en) 1973-02-28 1975-01-07 Foote Mineral Co Flotation of lithium aluminosilicate ores
US4098687A (en) 1977-01-13 1978-07-04 Board Of Control Of Michigan Technological University Beneficiation of lithium ores by froth flotation
US4192739A (en) 1977-12-21 1980-03-11 American Cyanamid Company Process for beneficiation of non-sulfide ores
US4158623A (en) 1977-12-21 1979-06-19 American Cyanamid Company Process for froth flotation of phosphate ores
US4207178A (en) 1977-12-21 1980-06-10 American Cyanamid Company Process for beneficiation of phosphate and iron ores
US4139481A (en) 1977-12-21 1979-02-13 American Cyanamid Company Combinations of alkylamidoalkyl monoesters of sulfosuccinic acid and fatty acids as collectors for non-sulfide ores
US4298708A (en) * 1979-04-02 1981-11-03 Texaco Development Corp. Aminated alkoxylated aliphatic alcohol salts as polyisocyanurate catalysts
DE3641579A1 (de) * 1986-12-05 1988-06-16 Henkel Kgaa N-alkyl- und n-alkenylasparaginsaeuren als co-sammler fuer die flotation nichtsulfidischer erze
ZA909347B (en) 1990-01-31 1991-09-25 Betachem Proprietary Limited A froth flotation process
DE102009030411A1 (de) * 2009-06-25 2010-12-30 Clariant International Limited Wasser-in-Öl-Emulsion und Verfahren zu ihrer Herstellung

Also Published As

Publication number Publication date
WO2023036498A1 (fr) 2023-03-16
AU2022342271A1 (en) 2024-05-02
CL2024000691A1 (es) 2024-07-26
CA3232104A1 (fr) 2023-03-16
AR126575A1 (es) 2023-10-25
PE20240543A1 (es) 2024-03-19

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