KR960007454A - Method of Purifying Sodium Sulfate (Na₂SO₄) - Google Patents

Method of Purifying Sodium Sulfate (Na₂SO₄) Download PDF

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Publication number
KR960007454A
KR960007454A KR1019940020713A KR19940020713A KR960007454A KR 960007454 A KR960007454 A KR 960007454A KR 1019940020713 A KR1019940020713 A KR 1019940020713A KR 19940020713 A KR19940020713 A KR 19940020713A KR 960007454 A KR960007454 A KR 960007454A
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KR
South Korea
Prior art keywords
sodium sulfate
impurities
sodium
solution
dissolving
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Application number
KR1019940020713A
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Korean (ko)
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최봉수
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최봉수
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Priority to KR1019940020713A priority Critical patent/KR960007454A/en
Publication of KR960007454A publication Critical patent/KR960007454A/en

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  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

본 발명은 황산화나트륨의 정제방법에 관한 것으로, 그 목적은 불순물이 다량 함유되어 폐기되는 황산화나트륨을 정제하여 재사용함으로써 효율성을 높이고, 환경오염을 방지할 수 있는 황산화나트륨의 정제방법을 제공하는 것이다.The present invention relates to a method for refining sodium sulfate, and an object thereof is to provide a method for refining sodium sulfate capable of increasing efficiency and preventing environmental pollution by reusing and reusing sodium sulfate which is disposed of in a large amount of impurities. It is.

본 발명에 따른 황산화나트륨의 정제방법은, 불순물이 다량 함유된 황산화나트륨을 용해시켜 황산, 수산화나트륨과 불순물으로 분리시키는 제1차 용해단계, 제1차 용해단계에서 황산화나트륨이 용해된 용액을 냉각하여 황산화나트륨의 결정체를 채취하는 결정채취단계, 채취단계에서 채취된 황산화나트륨 결정을 가열하여 재용해시켜 황산화나트륨에 함유된 불순물을 2차 분리시키는 제2차 용해단계, 제2차 용해단계에서 생성된 요액을 여과하여 불순물을 걸래내는 여과단계, 여과단계에서 불순물이 여과된 용액을 증류시켜 황산화나트륨 결정체를 석출하는 결정체 석출단계를 구비하는 것이다.In the method for purifying sodium sulfate according to the present invention, sodium sulfate is dissolved in a first dissolution step and a first dissolution step, in which sodium sulfate containing a large amount of impurities is dissolved to separate sulfuric acid, sodium hydroxide and impurities. Crystal scavenging step of cooling the solution to collect sodium sulphate crystals, second dissolving step of secondaryly separating impurities contained in sodium sulphate by heating and re-dissolving the sodium sulphate crystals collected in the collecting step; A filtration step of filtering the urine produced in the secondary dissolution step to filter out impurities, and a crystal precipitation step of distilling the sodium sulfate crystals by distilling the solution in which impurities are filtered in the filtration step.

Description

황산화나트륨(Na2SO4)의 정제방법Method for Purifying Sodium Sulfate (Na2SO4)

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 황산화나트륨의 정제과정을 나타낸 순서도이다.1 is a flow chart showing a purification process of sodium sulfate according to the present invention.

Claims (1)

불순물이 다량 함유된 황산화나트륨을 용해시켜 황산, 수산화나트륨과 불순물으로 분리시키는 제1차 용해단계, 상기 제1차 용해단계에서 황산화사트륨이 용해된 용액을 냉각하여 황산화나트륨의 결정체를 채취하는 결정채취단계, 상기 결정채취단계에서 채취된 황산화나트륨 결정을 가열하여 재용해시켜 황산화나트륨에 함유된 불순물을 2차 분리시키는 제2차 용해단계, 상기 제2차 용해단계에서 생성된 용액을 여과하여 불순물을 걸러내는 여과단계, 상기 여과단계에서 불순물이 여과된 용액을 증류시켜 황산화나트륨 결정체를 석출하는 결정체 석출단계를 구비하는 황산화나트륨의 정제방법.Crystallization of sodium sulfate is obtained by dissolving sodium sulfate containing a large amount of impurities to separate sulfuric acid, sodium hydroxide and impurities into the first dissolution step and the solution of sodium sulfate in the first dissolution step. A second dissolution step of separating the impurities contained in the sodium sulfate by heating and re-dissolving the crystallized sodium sulfate crystals collected in the crystal collection step, and the solution produced in the second dissolution step. The filtration step of filtering the impurities, the method of purifying sodium sulfate comprising a crystal precipitation step of precipitating sodium sulfate crystals by distilling the solution in which impurities are filtered in the filtration step. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940020713A 1994-08-22 1994-08-22 Method of Purifying Sodium Sulfate (Na₂SO₄) KR960007454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940020713A KR960007454A (en) 1994-08-22 1994-08-22 Method of Purifying Sodium Sulfate (Na₂SO₄)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940020713A KR960007454A (en) 1994-08-22 1994-08-22 Method of Purifying Sodium Sulfate (Na₂SO₄)

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KR960007454A true KR960007454A (en) 1996-03-22

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KR1019940020713A KR960007454A (en) 1994-08-22 1994-08-22 Method of Purifying Sodium Sulfate (Na₂SO₄)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200026940A (en) * 2017-08-02 2020-03-11 제이엑스금속주식회사 Sodium removal method, and metal concentration method and metal recovery method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200026940A (en) * 2017-08-02 2020-03-11 제이엑스금속주식회사 Sodium removal method, and metal concentration method and metal recovery method

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