CL2016000627A1 - Process to produce lithium carbonate, from a brine with a ratio of ca / li 35 to 50 p / p, and mg / li 8 to 11 p / p, with solvent extraction stages, first purification through a separator and crystallizer, second and third purification, contact brine with sodium carbonate, wash and dry. - Google Patents

Process to produce lithium carbonate, from a brine with a ratio of ca / li 35 to 50 p / p, and mg / li 8 to 11 p / p, with solvent extraction stages, first purification through a separator and crystallizer, second and third purification, contact brine with sodium carbonate, wash and dry.

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Publication number
CL2016000627A1
CL2016000627A1 CL2016000627A CL2016000627A CL2016000627A1 CL 2016000627 A1 CL2016000627 A1 CL 2016000627A1 CL 2016000627 A CL2016000627 A CL 2016000627A CL 2016000627 A CL2016000627 A CL 2016000627A CL 2016000627 A1 CL2016000627 A1 CL 2016000627A1
Authority
CL
Chile
Prior art keywords
brine
purification
filter
crystallizer
wash
Prior art date
Application number
CL2016000627A
Other languages
Spanish (es)
Inventor
Da Silva Ruberlan Gomes
Tamara Mariana Guilherme
Original Assignee
Vale Sa
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
Application filed by Vale Sa filed Critical Vale Sa
Publication of CL2016000627A1 publication Critical patent/CL2016000627A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D15/00—Lithium compounds
    • C01D15/08—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
    • C01B35/10—Compounds containing boron and oxygen
    • C01B35/12—Borates
    • C01B35/121—Borates of alkali metal
    • C01B35/122—Sodium tetraborates; Hydrates thereof, e.g. borax
    • C01B35/124—Preparation by working up natural brines, e.g. seawater
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D13/00—Compounds of sodium or potassium not provided for elsewhere
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/133—Renewable energy sources, e.g. sunlight

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Paper (AREA)

Abstract

La cláusula 1 divulga un proceso para producir carbonato de litio a partir de una salmuera rica en Ca y Mg, con una relación entre Ca/Li y Mg/Li entre 35 a 50 p/p y 8 a 11 p/p respectivamente, CARACTERIZADA por comprender los pasos siguientes: (i) filtrar Ia salmuera rica en Ca y Mg; (ii) tratar el filtrado con ácido clorhídrico; (iii) Extracción con solventes (sx) de la salmuera acidificada, obtenida al final del paso (ii); (iv) Una primera purificación de la salmuera empobrecida en boro, obtenida al final del paso (iii), que comprende pasar dicha salmuera empobrecida en boro a través de un evaporador y cristalizador, seguido de una reacción con una solución sobresaturada de sulfato de sodio, al 30 a 40% en peso, a temperatura ambiente y por un lapso de tiempo de 5 a 120 minutos; (v) Espesar y filtrar la pulpa resultante, obtenida al final del paso (iv), seguido de una segunda purificación del filtrado; (vi) Espesar y filtrar la pulpa resultante, obtenida al final del paso (v), seguido de una tercera purificación del filtrado; (vii) Hacer reaccionar la salmuera empobrecida en boro, calcio y magnesio, obtenida al final del paso (vi), con un carbonato de sodio sobre saturado; (viii) Espesar y filtrar la pulpa resultante, obtenida al final del paso (vii); (ix) Lavar y secar la torta de filtro (carbonato de litio), obtenida al final del paso (viii).Clause 1 discloses a process for producing lithium carbonate from a brine rich in Ca and Mg, with a ratio between Ca / Li and Mg / Li between 35 to 50 p / p and 8 to 11 p / p respectively, CHARACTERIZED by understand the following steps: (i) filter the brine rich in Ca and Mg; (ii) treat the filtrate with hydrochloric acid; (iii) Solvent extraction (sx) of the acidified brine, obtained at the end of step (ii); (iv) A first purification of the boron depleted brine, obtained at the end of step (iii), comprising passing said boron depleted brine through an evaporator and crystallizer, followed by a reaction with a supersaturated sodium sulfate solution , at 30 to 40% by weight, at room temperature and for a period of 5 to 120 minutes; (v) Thicken and filter the resulting pulp, obtained at the end of step (iv), followed by a second purification of the filtrate; (vi) Thicken and filter the resulting pulp, obtained at the end of step (v), followed by a third purification of the filtrate; (vii) Reacting the depleted brine in boron, calcium and magnesium, obtained at the end of step (vi), with a saturated sodium carbonate; (viii) Thicken and filter the resulting pulp, obtained at the end of the step (vii); (ix) Wash and dry the filter cake (lithium carbonate), obtained at the end of the step (viii).

CL2016000627A 2013-09-16 2016-03-16 Process to produce lithium carbonate, from a brine with a ratio of ca / li 35 to 50 p / p, and mg / li 8 to 11 p / p, with solvent extraction stages, first purification through a separator and crystallizer, second and third purification, contact brine with sodium carbonate, wash and dry. CL2016000627A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR102013023697A BR102013023697B1 (en) 2013-09-16 2013-09-16 process used for the production of lithium carbonate from a brine rich in ca and mg

Publications (1)

Publication Number Publication Date
CL2016000627A1 true CL2016000627A1 (en) 2017-05-12

Family

ID=52664861

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2016000627A CL2016000627A1 (en) 2013-09-16 2016-03-16 Process to produce lithium carbonate, from a brine with a ratio of ca / li 35 to 50 p / p, and mg / li 8 to 11 p / p, with solvent extraction stages, first purification through a separator and crystallizer, second and third purification, contact brine with sodium carbonate, wash and dry.

Country Status (3)

Country Link
BR (1) BR102013023697B1 (en)
CL (1) CL2016000627A1 (en)
WO (1) WO2015035488A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105152190B (en) * 2015-09-18 2017-04-05 湘潭大学 A kind of method that separating magnesium from low lithium salt and enriching lithium produce lithium carbonate
CN109987618A (en) * 2019-04-12 2019-07-09 中国科学院青海盐湖研究所 The preparation method of battery-level lithium carbonate
US11634789B2 (en) 2019-09-16 2023-04-25 InCoR Lithium Selective lithium extraction from brines
CN112093812A (en) * 2020-10-05 2020-12-18 湖南海联三一小苏打有限公司 Cyclic manufacturing method for co-production of sodium bicarbonate and ammonium chloride
CN114014340A (en) * 2021-11-19 2022-02-08 广东邦普循环科技有限公司 Method for removing calcium and enriching lithium from salt lake brine with high calcium-lithium ratio

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1756122A (en) * 1925-10-24 1930-04-29 West End Chemical Company Process for recovering borax from brine
US1733537A (en) * 1927-10-26 1929-10-29 West End Chemical Company Process for recovering borax from brine
US2540648A (en) * 1946-09-25 1951-02-06 West End Chemical Company Process for recovering sodium bicarbonate and sodium borate from a complex brine
CN101565188B (en) * 2009-06-03 2011-07-27 邛崃市鸿丰钾矿肥有限责任公司 Technique for preparing borax from brine
CN101712481A (en) * 2009-12-08 2010-05-26 耿世达 Method for preparing high-purity lithium carbonate and other available byproducts from salt lake brine
WO2013036983A1 (en) * 2011-09-15 2013-03-21 Orocobre Limited Process for producing lithium carbonate from concentrated lithium brine
AR083538A1 (en) * 2011-10-24 2013-03-06 Minera Exar S A HIGH PURITY LITHIUM CARBONATE PRODUCTION BATTERY DEGREE FROM NATURAL OR INDUSTRIAL SALMUERAS
CN102976367B (en) * 2012-12-20 2014-10-22 青海锂业有限公司 Method for preparing battery-level lithium carbonate by using salt lake brine

Also Published As

Publication number Publication date
BR102013023697B1 (en) 2019-09-10
WO2015035488A1 (en) 2015-03-19
BR102013023697A2 (en) 2015-08-04

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