GB1465880A - Manufacture of magnesia - Google Patents

Manufacture of magnesia

Info

Publication number
GB1465880A
GB1465880A GB2603175A GB2603175A GB1465880A GB 1465880 A GB1465880 A GB 1465880A GB 2603175 A GB2603175 A GB 2603175A GB 2603175 A GB2603175 A GB 2603175A GB 1465880 A GB1465880 A GB 1465880A
Authority
GB
United Kingdom
Prior art keywords
slurry
exhaust gases
per cent
free water
water content
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.)
Expired
Application number
GB2603175A
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.)
Quigley Co Inc
Original Assignee
Quigley Co Inc
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 Quigley Co Inc filed Critical Quigley Co Inc
Publication of GB1465880A publication Critical patent/GB1465880A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
    • 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
    • C01F5/02—Magnesia
    • C01F5/06—Magnesia by thermal decomposition of magnesium compounds
    • C01F5/08—Magnesia by thermal decomposition of magnesium compounds by calcining magnesium hydroxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

1465880 Magnesia grain QUIGLEY CO Inc 18 June 1975 [2 July 1974] 26031/75 Heading C1A Magnesium hydroxide slurry is filtered to yield a cake having 35-40 wt. per cent free water content partially dried to a free water content of 2-10 wt. per cent and compacted into briquettes which are dead burned at 1650-2000‹ C. The solids content of the slurry is preferably 150-450 gt. and may be obtained from calcined dolomite and sea water. The filtration pressure may be from 50-365 p.s.i.g. The drying step may be carried out in a rotary drum maintained at 100-750‹ C., and the compacting can be effected at 4-9 tons cm.<SP>-1</SP> of roll width. The heat required for the drying step may be supplied by exhaust gases from the dead burning step, and is generally effected by cocurrent flow of filter cake and exhaust gases through the drying zone. A granular oxide such as silica may be added in up to 0À02 g. per gram of Mg(OH) 2 prior to slurry filtration.
GB2603175A 1974-07-02 1975-06-18 Manufacture of magnesia Expired GB1465880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE140174 1974-07-02

Publications (1)

Publication Number Publication Date
GB1465880A true GB1465880A (en) 1977-03-02

Family

ID=11026639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2603175A Expired GB1465880A (en) 1974-07-02 1975-06-18 Manufacture of magnesia

Country Status (2)

Country Link
DE (1) DE2529744A1 (en)
GB (1) GB1465880A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126478A (en) * 1977-10-17 1978-11-21 Kaiser Aluminum & Chemical Corporation Production of periclase grain
WO2012017315A1 (en) * 2010-08-04 2012-02-09 Flsmidth A/S Calciner exhaust gas filter cake drying process
CN102485804A (en) * 2010-12-02 2012-06-06 新神户电机株式会社 Manufacturing method of magnesium oxide powder, manufacturing method of thermoset resin composition, manufacturing method of prepreg and overlapped plate
CN116134611A (en) * 2020-09-15 2023-05-16 电化株式会社 Magnesium oxide powder, filler composition, resin composition, and heat-dissipating member

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126478A (en) * 1977-10-17 1978-11-21 Kaiser Aluminum & Chemical Corporation Production of periclase grain
WO2012017315A1 (en) * 2010-08-04 2012-02-09 Flsmidth A/S Calciner exhaust gas filter cake drying process
CN102485804A (en) * 2010-12-02 2012-06-06 新神户电机株式会社 Manufacturing method of magnesium oxide powder, manufacturing method of thermoset resin composition, manufacturing method of prepreg and overlapped plate
CN116134611A (en) * 2020-09-15 2023-05-16 电化株式会社 Magnesium oxide powder, filler composition, resin composition, and heat-dissipating member
EP4215487A4 (en) * 2020-09-15 2024-03-20 Denka Company Limited Magnesium oxide powder, filler composition, resin composition, and heat-dissipating member

Also Published As

Publication number Publication date
DE2529744A1 (en) 1976-01-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930618