JPS5547221A - Production of purified aqueous caustic alkali solution - Google Patents

Production of purified aqueous caustic alkali solution

Info

Publication number
JPS5547221A
JPS5547221A JP11803278A JP11803278A JPS5547221A JP S5547221 A JPS5547221 A JP S5547221A JP 11803278 A JP11803278 A JP 11803278A JP 11803278 A JP11803278 A JP 11803278A JP S5547221 A JPS5547221 A JP S5547221A
Authority
JP
Japan
Prior art keywords
nickel
caustic alkali
hypochlorite
added
production
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
JP11803278A
Other languages
Japanese (ja)
Other versions
JPS5640086B2 (en
Inventor
Taketsugu Adachi
Tomio Fukunaga
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.)
Tsurumi Soda Co Ltd
Original Assignee
Tsurumi Soda Co 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 Tsurumi Soda Co Ltd filed Critical Tsurumi Soda Co Ltd
Priority to JP11803278A priority Critical patent/JPS5547221A/en
Publication of JPS5547221A publication Critical patent/JPS5547221A/en
Publication of JPS5640086B2 publication Critical patent/JPS5640086B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To obtain a high quality aq. caustic alkali soln. by adding hypochlorite to a nickel-contg. aq. caustic alkali soln. to separate nickel oxide precipitated.
CONSTITUTION: To an aq. caustic alkali soln. contg. nickel cpds. as impurities is added 3.1W30, pref. 3.5W25 times as much hypochlorite (as available chlorine) as the nickel, thereby converting the nickel cpds. into nickel oxide, which is then precipitation-separated. When below 3.1 times as much hypochlorite is added, nickel removal becomes almost impossible. In case above 30 times as much hypochlorite is added, the nickel removing effect is slightly enhanced, and excess hypochlorite remains unfavorably.
COPYRIGHT: (C)1980,JPO&Japio
JP11803278A 1978-09-27 1978-09-27 Production of purified aqueous caustic alkali solution Granted JPS5547221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11803278A JPS5547221A (en) 1978-09-27 1978-09-27 Production of purified aqueous caustic alkali solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11803278A JPS5547221A (en) 1978-09-27 1978-09-27 Production of purified aqueous caustic alkali solution

Publications (2)

Publication Number Publication Date
JPS5547221A true JPS5547221A (en) 1980-04-03
JPS5640086B2 JPS5640086B2 (en) 1981-09-18

Family

ID=14726358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11803278A Granted JPS5547221A (en) 1978-09-27 1978-09-27 Production of purified aqueous caustic alkali solution

Country Status (1)

Country Link
JP (1) JPS5547221A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027777A (en) * 1983-07-26 1985-02-12 Mitsubishi Heavy Ind Ltd Furl injection pump and manufacture thereof
JPS6027778A (en) * 1983-07-26 1985-02-12 Mitsubishi Heavy Ind Ltd Manufacture of fuel injection pump
JPS60118372U (en) * 1984-01-20 1985-08-10 株式会社ボッシュオートモーティブ　システム Plunger for fuel injection pump
JPS61154718A (en) * 1984-12-27 1986-07-14 Oiles Ind Co Ltd Pressure pin used for press forming die
JPH02227553A (en) * 1989-02-28 1990-09-10 Nippondenso Co Ltd Element for fuel injection pump
EP0761599A3 (en) * 1995-08-29 1999-01-07 Shin-Etsu Handotai Company Limited Method of purifying alkaline solution and method of etching semiconductor wafers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453697A (en) * 1977-10-07 1979-04-27 Tokuyama Soda Co Ltd Caustic alkali treating method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453697A (en) * 1977-10-07 1979-04-27 Tokuyama Soda Co Ltd Caustic alkali treating method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027777A (en) * 1983-07-26 1985-02-12 Mitsubishi Heavy Ind Ltd Furl injection pump and manufacture thereof
JPS6027778A (en) * 1983-07-26 1985-02-12 Mitsubishi Heavy Ind Ltd Manufacture of fuel injection pump
JPS60118372U (en) * 1984-01-20 1985-08-10 株式会社ボッシュオートモーティブ　システム Plunger for fuel injection pump
JPS61154718A (en) * 1984-12-27 1986-07-14 Oiles Ind Co Ltd Pressure pin used for press forming die
JPH02227553A (en) * 1989-02-28 1990-09-10 Nippondenso Co Ltd Element for fuel injection pump
EP0761599A3 (en) * 1995-08-29 1999-01-07 Shin-Etsu Handotai Company Limited Method of purifying alkaline solution and method of etching semiconductor wafers
US6110839A (en) * 1995-08-29 2000-08-29 Shin-Etsu Handotai Co., Ltd. Method of purifying alkaline solution and method of etching semiconductor wafers

Also Published As

Publication number Publication date
JPS5640086B2 (en) 1981-09-18

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