GB473834A - Method of producing ceramic articles which resist spalling - Google Patents

Method of producing ceramic articles which resist spalling

Info

Publication number
GB473834A
GB473834A GB7869/36A GB786936A GB473834A GB 473834 A GB473834 A GB 473834A GB 7869/36 A GB7869/36 A GB 7869/36A GB 786936 A GB786936 A GB 786936A GB 473834 A GB473834 A GB 473834A
Authority
GB
United Kingdom
Prior art keywords
grain
ceramic articles
spalling
content
per cent
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
GB7869/36A
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.)
MAGNESITAL GES MIT Beschrankter
Original Assignee
MAGNESITAL GES MIT Beschrankter
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 MAGNESITAL GES MIT Beschrankter filed Critical MAGNESITAL GES MIT Beschrankter
Publication of GB473834A publication Critical patent/GB473834A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The resistance of magnesia refractories such as magnesite bricks to spalling is increased by incorporating therein a small proportion, preferably 2-6 per cent, of one or more highly refractory substances, other than alumina or aluminous substances, which retard or arrest the formation of periclase crystals when the articles are burnt and providing that in the raw material the proportion of coarse grain (over ,8 mm.) to medium grain (,8 mm.-,1 mm.) to fine grain (below ,1 mm.) is approximately 5 : 2 : 3; however, the content of the coarse grain and the fine grain may vary by about one third in either direction, while the content of the medium grain, which should not exceed 25 per cent, may be omitted. Highly refractory substances specified are chromite, chromium oxide, pyrolusite and magnesium silicates such as talc.
GB7869/36A 1935-03-19 1936-03-16 Method of producing ceramic articles which resist spalling Expired GB473834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE473834X 1935-03-19

Publications (1)

Publication Number Publication Date
GB473834A true GB473834A (en) 1937-10-18

Family

ID=6541628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7869/36A Expired GB473834A (en) 1935-03-19 1936-03-16 Method of producing ceramic articles which resist spalling

Country Status (1)

Country Link
GB (1) GB473834A (en)

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