FR2411158A1 - PROCESS FOR PURIFYING CRYSTALLINE POTASSIUM CHLORIDE - Google Patents

PROCESS FOR PURIFYING CRYSTALLINE POTASSIUM CHLORIDE

Info

Publication number
FR2411158A1
FR2411158A1 FR7834417A FR7834417A FR2411158A1 FR 2411158 A1 FR2411158 A1 FR 2411158A1 FR 7834417 A FR7834417 A FR 7834417A FR 7834417 A FR7834417 A FR 7834417A FR 2411158 A1 FR2411158 A1 FR 2411158A1
Authority
FR
France
Prior art keywords
potassium chloride
chloride
sodium chloride
sodium
saturated
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.)
Withdrawn
Application number
FR7834417A
Other languages
French (fr)
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.)
PPG Industries Canada Ltd
Original Assignee
PPG Industries Canada 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
Application filed by PPG Industries Canada Ltd filed Critical PPG Industries Canada Ltd
Publication of FR2411158A1 publication Critical patent/FR2411158A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/14—Purification

Landscapes

  • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'INVENTION CONCERNE UN PROCEDE DE PURIFICATION DE CRISTAUX DE CHLORURE DE POTASSIUM. ON ABAISSE LA TENEUR EN CHLORURE DE SODIUM D'UN PRODUIT CRISTALLIN DE CHLORURE DE POTASSIUM PUR A 97,5 FORME PAR CRISTALLISATION A PARTIR D'UNE SOLUTION RICHE A LA FOIS EN CHLORURE DE SODIUM ET EN CHLORURE DE POTASSIUM, PAR CONTACT DES CRISTAUX AVEC UNE SOLUTION AQUEUSE DE LIXIVIATION, DONT ON CHOISIT LE SOLUTE PARMI LE CHLORURE DE POTASSIUM ET LE MELANGE DE CHLORURE DE POTASSIUM ET DE CHLORURE DE SODIUM, LA SOLUTION DE LIXIVIATION ETANT SATUREE EN CHLORURE DE POTASSIUM ET NON SATUREE EN CHLORURE DE SODIUM, PENDANT UNE DUREE SUFFISANTE POUR ABAISSER SENSIBLEMENT LA TENEUR EN CHLORURE DE SODIUM DANS LE CHLORURE DE POTASSIUM CRISTALLIN, ET L'ON RECUEILLE LE PRODUIT PURIFIE A PARTIR DE LA SOLUTION DE LIXIVIATION. ON OBTIENT UN PRODUIT TRES PUR UTILISABLE EN PHARMACIE ET POUR DES ANALYSES.THE INVENTION RELATES TO A PROCESS FOR PURIFYING POTASSIUM CHLORIDE CRYSTALS. THE SODIUM CHLORIDE CONTENT OF A PURE POTASSIUM CHLORIDE CRYSTALLINE PRODUCT IS REDUCED TO 97.5 FORMED BY CRYSTALLIZATION FROM A SOLUTION RICH BOTH IN SODIUM CHLORIDE AND POTASSIUM CHLORIDE, BY CONTACT OF THE CRYSTALS WITH AN AQUEOUS LEACHING SOLUTION, THE SOLUTION OF WHICH IS CHOSEN FROM POTASSIUM CHLORIDE AND THE MIXTURE OF POTASSIUM CHLORIDE AND SODIUM CHLORIDE, THE LEACHING SOLUTION BEING SATURATED WITH POTASSIUM CHLORIDE AND NOT SATURATED WITH SODIUM CHLORIDE AND NOT SATURATED SODIUM SUFFICIENT TO SUBSTANTIALLY LOWER THE SODIUM CHLORIDE CONTENT IN CRYSTALLINE POTASSIUM CHLORIDE, AND THE PURIFIED PRODUCT IS COLLECTED FROM THE LEACHING SOLUTION. WE OBTAIN A VERY PURE PRODUCT THAT CAN BE USED IN PHARMACY AND FOR ANALYZES.

FR7834417A 1977-12-08 1978-12-06 PROCESS FOR PURIFYING CRYSTALLINE POTASSIUM CHLORIDE Withdrawn FR2411158A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85886677A 1977-12-08 1977-12-08

Publications (1)

Publication Number Publication Date
FR2411158A1 true FR2411158A1 (en) 1979-07-06

Family

ID=25329395

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834417A Withdrawn FR2411158A1 (en) 1977-12-08 1978-12-06 PROCESS FOR PURIFYING CRYSTALLINE POTASSIUM CHLORIDE

Country Status (3)

Country Link
DE (1) DE2852925B2 (en)
FR (1) FR2411158A1 (en)
GB (1) GB2009724B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487809A1 (en) * 1980-07-31 1982-02-05 Ppg Ind Canada Ltd PROCESS FOR PURIFYING POTASSIUM CHLORIDE PARTICLES

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248601A (en) * 1979-07-12 1981-02-03 Kerr-Mcgee Chemical Corporation Process for reducing the sodium chloride content of a potassium salt
FR2489292A1 (en) * 1980-09-01 1982-03-05 Kerr Mc Gee Chem Corp Potassium salts e.g. potassium chloride or sulphate purificn. - by compacting to uniform density, comminuting, and washing with potassium salt soln. less than 50 per cent satd. with sodium chloride
EP0627384B1 (en) * 1993-06-03 1995-09-20 Kali Und Salz Beteiligungs Aktiengesellschaft Process and apparatus for the treatment of a potassium chloride mixture

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE248462C (en) *
DE282952C (en) *
DE235751C (en) *
FR497577A (en) * 1918-03-27 1919-12-10 Pietro Benvenuti Process for the extraction and separation of potassium chloride from mixtures or saturated solutions of sodium and potassium chlorides
FR1226060A (en) * 1958-06-23 1960-07-08 United States Borax Chem Processing of ores containing potassium to remove sulphates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE248462C (en) *
DE282952C (en) *
DE235751C (en) *
FR497577A (en) * 1918-03-27 1919-12-10 Pietro Benvenuti Process for the extraction and separation of potassium chloride from mixtures or saturated solutions of sodium and potassium chlorides
FR1226060A (en) * 1958-06-23 1960-07-08 United States Borax Chem Processing of ores containing potassium to remove sulphates

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/38 *
EXBK/42 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487809A1 (en) * 1980-07-31 1982-02-05 Ppg Ind Canada Ltd PROCESS FOR PURIFYING POTASSIUM CHLORIDE PARTICLES

Also Published As

Publication number Publication date
GB2009724A (en) 1979-06-20
DE2852925A1 (en) 1979-07-05
DE2852925B2 (en) 1980-08-28
GB2009724B (en) 1982-05-26

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Legal Events

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AR Application made for restoration
DI Inadmissibility of an action of restoration
AR Application made for restoration
DI Inadmissibility of an action of restoration