IE37428B1 - Process for making magnesia - Google Patents

Process for making magnesia

Info

Publication number
IE37428B1
IE37428B1 IE1610/72A IE161072A IE37428B1 IE 37428 B1 IE37428 B1 IE 37428B1 IE 1610/72 A IE1610/72 A IE 1610/72A IE 161072 A IE161072 A IE 161072A IE 37428 B1 IE37428 B1 IE 37428B1
Authority
IE
Ireland
Prior art keywords
sludge
chrome
magnesia
cake
mixed
Prior art date
Application number
IE1610/72A
Other versions
IE37428L (en
Original Assignee
Steetley 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 Steetley Ltd filed Critical Steetley Ltd
Publication of IE37428L publication Critical patent/IE37428L/en
Publication of IE37428B1 publication Critical patent/IE37428B1/en

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
    • C04B35/42—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 chromites
    • 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
    • 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
    • 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
    • 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
    • C04B35/12—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 chromium oxide
    • 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
    • C04B35/44—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 aluminates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density

Landscapes

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

Abstract

1407199 Magnesia refractories STREETLEY (MFG) Ltd 24 Nov 1972 [1 Dec 1971 4 April 1972] 55820/71 and 15482/72 Headings C1J and CIA A sludge comprising magnesium hydroxide is simultaneously dewatered and compacted to give a cake containing at least 67À5% by weight of solids and having a green bulk density of at least 1À15 grams/c.c.; the magnesium hydroxide in the cake obtained may be converted by suitable heat treatment to magnesia. A refractory may be mixed with the sludge before treatment. Refractories that may be used are lime-bearing materials, chrome-bearing materials, zircon, zirconia and zirconium salts, silica, Fe 2 O 3 and alumina. Chrome flour may be mixed with the sludge of Mg(OH) 2 and larger particles of chrome ore with the cake. The dewatering and compacting may be effected by pressure filtration at >400 p.s.i. [GB1407199A]
IE1610/72A 1971-12-01 1972-11-21 Process for making magnesia IE37428B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5582071 1971-12-01
GB1548272*[A GB1407199A (en) 1971-12-01 1972-04-04 Process for making magnesia

Publications (2)

Publication Number Publication Date
IE37428L IE37428L (en) 1973-06-01
IE37428B1 true IE37428B1 (en) 1977-07-20

Family

ID=26251324

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1610/72A IE37428B1 (en) 1971-12-01 1972-11-21 Process for making magnesia

Country Status (15)

Country Link
JP (1) JPS5318000B2 (en)
AT (1) AT342486B (en)
BG (1) BG25661A3 (en)
CA (1) CA973685A (en)
ES (1) ES409157A1 (en)
FI (1) FI57392C (en)
FR (1) FR2162117B1 (en)
GB (1) GB1407199A (en)
IE (1) IE37428B1 (en)
IL (1) IL40909A (en)
IT (1) IT975906B (en)
NL (1) NL7216384A (en)
NO (1) NO133491C (en)
RO (1) RO62603A (en)
YU (2) YU298172A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919275U (en) * 1982-07-27 1984-02-06 ヨコタ工業株式会社 C type ring clincher

Also Published As

Publication number Publication date
GB1407199A (en) 1975-09-24
IL40909A0 (en) 1973-01-30
NO133491B (en) 1976-02-02
FR2162117A1 (en) 1973-07-13
JPS5318000B2 (en) 1978-06-12
CA973685A (en) 1975-09-02
RO62603A (en) 1978-05-15
IL40909A (en) 1976-01-30
NO133491C (en) 1976-05-12
IE37428L (en) 1973-06-01
FR2162117B1 (en) 1976-06-04
YU298172A (en) 1982-02-28
ES409157A1 (en) 1975-11-16
YU39016B (en) 1984-02-29
AT342486B (en) 1978-04-10
NL7216384A (en) 1973-06-05
FI57392C (en) 1980-08-11
FI57392B (en) 1980-04-30
JPS4865197A (en) 1973-09-08
IT975906B (en) 1974-08-10
ATA1021372A (en) 1977-07-15
BG25661A3 (en) 1978-11-10

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