GB1413871A - Method of producing magnesia refractory grains - Google Patents

Method of producing magnesia refractory grains

Info

Publication number
GB1413871A
GB1413871A GB68273A GB68273A GB1413871A GB 1413871 A GB1413871 A GB 1413871A GB 68273 A GB68273 A GB 68273A GB 68273 A GB68273 A GB 68273A GB 1413871 A GB1413871 A GB 1413871A
Authority
GB
United Kingdom
Prior art keywords
slaked
dolomite
magnesium hydroxide
lime
reaction
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
GB68273A
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 Nihon Kagaku Kogyo KK
Original Assignee
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 Nihon Kagaku Kogyo KK filed Critical Shin Nihon Kagaku Kogyo KK
Priority to GB68273A priority Critical patent/GB1413871A/en
Publication of GB1413871A publication Critical patent/GB1413871A/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
    • C01F5/14—Magnesium hydroxide
    • C01F5/22—Magnesium hydroxide from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

1413871 Magnesia SHIN NIHOM KAGAKU KK 5 Jan 1973 682/73 Heading C1A Magnesia refractory grains with a CaO/SiO 2 molar ratio of not less than 2 and having a bulk density of not less than 3À2 g. are made by (1) adding quick lime, calcined dolomite, slaked lime or slaked dolomite to an aqueous solution containing magnesium ions to precipitate magnesium hydroxide, the quantity of quick lime, calcined dolomite, slaked lime or slaked dolomite being such as to maintain the reaction mixture at a pH not lower than 11À2 and thereafter (2) dead-burning the precipitated magnesium hydroxide. The reaction (1) may be carried out in a plurality of reaction vessels connected in series in at least the first of which the pH is not higher than 11À2 and in at least the last of which the pH is not higher than 11À2. The solution remaining after the removal of magnesium hydroxide from the reaction mixture may be used as a starting material for a process according to the invention.
GB68273A 1973-01-05 1973-01-05 Method of producing magnesia refractory grains Expired GB1413871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB68273A GB1413871A (en) 1973-01-05 1973-01-05 Method of producing magnesia refractory grains

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB68273A GB1413871A (en) 1973-01-05 1973-01-05 Method of producing magnesia refractory grains

Publications (1)

Publication Number Publication Date
GB1413871A true GB1413871A (en) 1975-11-12

Family

ID=9708684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB68273A Expired GB1413871A (en) 1973-01-05 1973-01-05 Method of producing magnesia refractory grains

Country Status (1)

Country Link
GB (1) GB1413871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229423A (en) 1979-02-09 1980-10-21 Kaiser Aluminum & Chemical Corporation Method of producing magnesium hydroxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229423A (en) 1979-02-09 1980-10-21 Kaiser Aluminum & Chemical Corporation Method of producing magnesium hydroxide

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Legal Events

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