JPS55162424A - Silicon removing method - Google Patents

Silicon removing method

Info

Publication number
JPS55162424A
JPS55162424A JP6730279A JP6730279A JPS55162424A JP S55162424 A JPS55162424 A JP S55162424A JP 6730279 A JP6730279 A JP 6730279A JP 6730279 A JP6730279 A JP 6730279A JP S55162424 A JPS55162424 A JP S55162424A
Authority
JP
Japan
Prior art keywords
sludge
soln
gel
contained
sulfuric acid
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.)
Pending
Application number
JP6730279A
Other languages
Japanese (ja)
Inventor
Shoichi Tojo
Mineo Kawakami
Noriaki Kimata
Masamori Nakamura
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.)
Tostem Corp
Original Assignee
Tostem Corp
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 Tostem Corp filed Critical Tostem Corp
Priority to JP6730279A priority Critical patent/JPS55162424A/en
Publication of JPS55162424A publication Critical patent/JPS55162424A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

PURPOSE: To efficiently desiliconize Al sludge and recycle it by adding a strongly acidic soln. to the sludge to convert Si contained into gel.
CONSTITUTION: To Al-contg. waste liquor or Al sludge is added a strongly acidic soln. such as sulfuric acid so as to satisfy an H2SO4 to Al molar ratio of 4/2W15/2 and a sulfuric acid concn. of about 200W2,000g/l, and they are well agitated and aged for a fixed time. As a result, impurity Si contained in the waste liquor or the sludge gels, and the soln. gelatinizes as a whole with the passage of time. Water is added to the gelatin to separate the resulting aluminum sulfate and the Si gel. The gel-free aluminum sulfate is then neutralized with an alkali soln. to form aluminum hydroxide usable as starting material for manufacturing alumina, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP6730279A 1979-05-30 1979-05-30 Silicon removing method Pending JPS55162424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6730279A JPS55162424A (en) 1979-05-30 1979-05-30 Silicon removing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6730279A JPS55162424A (en) 1979-05-30 1979-05-30 Silicon removing method

Publications (1)

Publication Number Publication Date
JPS55162424A true JPS55162424A (en) 1980-12-17

Family

ID=13341066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6730279A Pending JPS55162424A (en) 1979-05-30 1979-05-30 Silicon removing method

Country Status (1)

Country Link
JP (1) JPS55162424A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5032369A (en) * 1986-12-03 1991-07-16 Sumitomo Metal Industries, Ltd. Method of removing silicon from waste hydrochloric acid pickling solutions for steel stock
JPH0556U (en) * 1991-06-25 1993-01-08 朝春 金武 Laboratory animal cage flooring
WO1996026900A1 (en) * 1995-02-28 1996-09-06 Shoden System Co., Ltd Method for treating aliminum hydroxide
JP2012219002A (en) * 2011-04-13 2012-11-12 Asahi Kagaku Kogyo Co Ltd Method of manufacturing aluminum sulfate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5032369A (en) * 1986-12-03 1991-07-16 Sumitomo Metal Industries, Ltd. Method of removing silicon from waste hydrochloric acid pickling solutions for steel stock
JPH0556U (en) * 1991-06-25 1993-01-08 朝春 金武 Laboratory animal cage flooring
WO1996026900A1 (en) * 1995-02-28 1996-09-06 Shoden System Co., Ltd Method for treating aliminum hydroxide
JP2012219002A (en) * 2011-04-13 2012-11-12 Asahi Kagaku Kogyo Co Ltd Method of manufacturing aluminum sulfate

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