GB757257A - Sintered refractory materials - Google Patents

Sintered refractory materials

Info

Publication number
GB757257A
GB757257A GB14386/54A GB1438654A GB757257A GB 757257 A GB757257 A GB 757257A GB 14386/54 A GB14386/54 A GB 14386/54A GB 1438654 A GB1438654 A GB 1438654A GB 757257 A GB757257 A GB 757257A
Authority
GB
United Kingdom
Prior art keywords
grains
magnesia
dolomite
mms
water
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
GB14386/54A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB757257A publication Critical patent/GB757257A/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
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
    • C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning

Landscapes

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

Abstract

Dead burnt dolomite or magnesia is prepared by admixing a minor amount of 0.5 to 4 mms. grains with a major amount of refractory material of grains larger than 4 mms., heating at 1650 DEG -1900 DEG C. whilst being stirred and separating off the smaller sized grains. The material forming the larger grains must not react with the smaller sized grains at the chosen temperature; magnesia and dolomite are specified.ALSO:Dead burnt dolomite or magnesia (see Group V) is used in the treatment of drinking, aggressive or industrial waters, and may be laid as a filtering bed or suspended in water. The filter mass need not be washed, and it is necessary to treat only some of the water, this then being admixed for correcting purposes with the remainder of the water, which has been bypassed.ALSO:A minor proportion of grains 0.5 to 4 mm. of dolomite or magnesia with a major proportion of refractory grains above 4 mms is heated at 1650 DEG -1900 DEG C., whilst being stirred, until the smaller range of grains are dead burnt, whence they are separated off. The material forming the larger grains is so chosen that is does not react with the smaller grains at the chosen temperature; magnesia and dolomite being specified. The mixture is passed through a slanting rotary furnace at a rate of 20-25 metres per hour.
GB14386/54A 1953-05-21 1954-05-17 Sintered refractory materials Expired GB757257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR757257X 1953-05-21

Publications (1)

Publication Number Publication Date
GB757257A true GB757257A (en) 1956-09-19

Family

ID=9166028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14386/54A Expired GB757257A (en) 1953-05-21 1954-05-17 Sintered refractory materials

Country Status (1)

Country Link
GB (1) GB757257A (en)

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