JPS5738319A - Purifying method for magnesium hydroxide - Google Patents

Purifying method for magnesium hydroxide

Info

Publication number
JPS5738319A
JPS5738319A JP11299280A JP11299280A JPS5738319A JP S5738319 A JPS5738319 A JP S5738319A JP 11299280 A JP11299280 A JP 11299280A JP 11299280 A JP11299280 A JP 11299280A JP S5738319 A JPS5738319 A JP S5738319A
Authority
JP
Japan
Prior art keywords
mesh
cake
screen
slurry
purity
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
JP11299280A
Other languages
Japanese (ja)
Inventor
Yoichi Takamiya
Yasuo Suzuki
Toshikazu Kuwabara
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.)
SHIN NIPPON KAGAKU KOGYO CO Ltd
Shin Nihon Kagaku Kogyo KK
Original Assignee
SHIN NIPPON KAGAKU KOGYO CO Ltd
Shin Nihon Kagaku Kogyo KK
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 SHIN NIPPON KAGAKU KOGYO CO Ltd, Shin Nihon Kagaku Kogyo KK filed Critical SHIN NIPPON KAGAKU KOGYO CO Ltd
Priority to JP11299280A priority Critical patent/JPS5738319A/en
Publication of JPS5738319A publication Critical patent/JPS5738319A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00—Compounds of magnesium
    • C01F5/14—Magnesium hydroxide
    • C01F5/145—Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To considerably reduce the amount of industrial water for washing, to almost prevent silica from mixing, and to reduce the size of an apparatus by washing a cake layer obtd. by press-dehydrating the minus mesh part of a conc. Mg (OH)2 slurry.
CONSTITUTION: An Mg(OH)2 slurry obtd. by the reaction of decarboxylated seawater with slaked lime or milk of lightly burned dolomite is concd. to ≥100g/l solid concn. with a thickener or the like, fed to a vibrating screen apparatus 2 from a pipe 1, and screened with a screen 3 having ≤44μm mesh. The preferred screen 3 is a vibrating screen provided with a controller 6 and discharging the plus mesh by closing a valve A and opening a valve B from the viewpoint of capacity and efficiency. As the mesh of the screen is made smaller, the purity of a product is increased, so the mesh is decided according to the purity. The slurry freed of solid impurities is then dehydrated with a press dehydrator under ≥0.5kg/cm2 pressure to remove impurities such as Ca ion. The resulting cake is washed by injecting water. By blowing compressed air into the washed cake, the water content of the cake can be lowered.
COPYRIGHT: (C)1982,JPO&Japio
JP11299280A 1980-08-19 1980-08-19 Purifying method for magnesium hydroxide Pending JPS5738319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11299280A JPS5738319A (en) 1980-08-19 1980-08-19 Purifying method for magnesium hydroxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11299280A JPS5738319A (en) 1980-08-19 1980-08-19 Purifying method for magnesium hydroxide

Publications (1)

Publication Number Publication Date
JPS5738319A true JPS5738319A (en) 1982-03-03

Family

ID=14600706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11299280A Pending JPS5738319A (en) 1980-08-19 1980-08-19 Purifying method for magnesium hydroxide

Country Status (1)

Country Link
JP (1) JPS5738319A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5995994A (en) * 1982-11-22 1984-06-02 Nichinan Sangyo Kk Packing method of contact material in cleaning device for sewage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5995994A (en) * 1982-11-22 1984-06-02 Nichinan Sangyo Kk Packing method of contact material in cleaning device for sewage
JPS6258797B2 (en) * 1982-11-22 1987-12-08 Nichinan Sangyo Kk

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