FR2428001A1 - Potassium sulphate prodn. by double decomposition - via glaserite, with recirculation of chloride soln. after pptn. of sodium chloride in useful form - Google Patents

Potassium sulphate prodn. by double decomposition - via glaserite, with recirculation of chloride soln. after pptn. of sodium chloride in useful form

Info

Publication number
FR2428001A1
FR2428001A1 FR7816731A FR7816731A FR2428001A1 FR 2428001 A1 FR2428001 A1 FR 2428001A1 FR 7816731 A FR7816731 A FR 7816731A FR 7816731 A FR7816731 A FR 7816731A FR 2428001 A1 FR2428001 A1 FR 2428001A1
Authority
FR
France
Prior art keywords
soln
glaserite
prodn
chloride
pptn
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.)
Granted
Application number
FR7816731A
Other languages
French (fr)
Other versions
FR2428001B1 (en
Inventor
I D Sokolov
V A Ostanina
J S Safrygin
T I Rutkovskaya
N V Antonova
R E Naginskaya
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.)
INST GALURGII
Original Assignee
INST GALURGII
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 INST GALURGII filed Critical INST GALURGII
Priority to FR7816731A priority Critical patent/FR2428001A1/en
Publication of FR2428001A1 publication Critical patent/FR2428001A1/en
Application granted granted Critical
Publication of FR2428001B1 publication Critical patent/FR2428001B1/fr
Granted 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
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/06—Preparation of sulfates by double decomposition
    • C01D5/08—Preparation of sulfates by double decomposition with each other or with ammonium sulfate
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium
    • C05D1/02—Manufacture from potassium chloride or sulfate or double or mixed salts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

Prodn. of K2SO4 involves (a) converting Na2SO4 and KCl in aq. medium into glaserite (I) and a glaserite soln. (II);(b) converting the pptd. (I) with KCl in aq. medium into K2SO4 and a sulphate soln., which is recycled to stage na); and (c) cooling the (II) obtd. to a temp. from +3 to -8 degrees C to form mirabilite (III) and a chloride soln., which is evapd. down to give NaCl and a conc. chloride soln. (IV). The novel feature is that (IV) is mixed with (III) and the suspension obtd. is recycled to stage (a). The process is useful for the prodn. of Cl-free fertilisers. The degree of extn. of K and sulphate ions is increased and the NaCl obtd. is suitable for sale, whilst the purity of the prod. is also higher than usual.
FR7816731A 1978-06-05 1978-06-05 Potassium sulphate prodn. by double decomposition - via glaserite, with recirculation of chloride soln. after pptn. of sodium chloride in useful form Granted FR2428001A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7816731A FR2428001A1 (en) 1978-06-05 1978-06-05 Potassium sulphate prodn. by double decomposition - via glaserite, with recirculation of chloride soln. after pptn. of sodium chloride in useful form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7816731A FR2428001A1 (en) 1978-06-05 1978-06-05 Potassium sulphate prodn. by double decomposition - via glaserite, with recirculation of chloride soln. after pptn. of sodium chloride in useful form

Publications (2)

Publication Number Publication Date
FR2428001A1 true FR2428001A1 (en) 1980-01-04
FR2428001B1 FR2428001B1 (en) 1980-11-14

Family

ID=9209072

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816731A Granted FR2428001A1 (en) 1978-06-05 1978-06-05 Potassium sulphate prodn. by double decomposition - via glaserite, with recirculation of chloride soln. after pptn. of sodium chloride in useful form

Country Status (1)

Country Link
FR (1) FR2428001A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1124757A1 (en) * 1998-09-14 2001-08-22 Dead Sea Works Ltd Process for producing potassium sulfate from potash and sodium sulfate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1124757A1 (en) * 1998-09-14 2001-08-22 Dead Sea Works Ltd Process for producing potassium sulfate from potash and sodium sulfate
EP1124757A4 (en) * 1998-09-14 2010-01-20 Dead Sea Works Ltd Process for producing potassium sulfate from potash and sodium sulfate

Also Published As

Publication number Publication date
FR2428001B1 (en) 1980-11-14

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