GB1354772A - Production of superreactive calcium oxide - Google Patents

Production of superreactive calcium oxide

Info

Publication number
GB1354772A
GB1354772A GB1597771A GB1597771A GB1354772A GB 1354772 A GB1354772 A GB 1354772A GB 1597771 A GB1597771 A GB 1597771A GB 1597771 A GB1597771 A GB 1597771A GB 1354772 A GB1354772 A GB 1354772A
Authority
GB
United Kingdom
Prior art keywords
calcium oxide
superreactive
production
carried out
calcium carbonate
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
GB1597771A
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.)
Rheinische Kalksteinwerke GmbH
Original Assignee
Rheinische Kalksteinwerke GmbH
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
Priority claimed from DE19702024471 external-priority patent/DE2024471C3/en
Application filed by Rheinische Kalksteinwerke GmbH filed Critical Rheinische Kalksteinwerke GmbH
Publication of GB1354772A publication Critical patent/GB1354772A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/02—Oxides or hydroxides
    • C01F11/04—Oxides or hydroxides by thermal decomposition
    • C01F11/06—Oxides or hydroxides by thermal decomposition of carbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1354772 Calcium oxide RHEINISCHE KALKSTEINWERKE GmbH 20 May 1971 [20 May 1970] 15977/71 Heading C1A Super-reactive calcium oxide is produced by decomposing calcium carbonate having a grain size of less than 200 Á, in a dry air stream with a CO 2 -partial pressure which amounts at most to 40% of the CO 2 -equilibrium pressure level corresponding to the formation of the superreactive CaO as shown in curve II of Fig. 1, and the decomposition is carried out at a temperature of from 850‹ to 900‹ C. and the quantity of heat required for the deacidification is delivered shockwise to the calcium carbonate. The reaction may be carried out in a fluidized bed of a hot granular material.
GB1597771A 1970-05-20 1971-05-20 Production of superreactive calcium oxide Expired GB1354772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702024471 DE2024471C3 (en) 1970-05-20 Process for the production of highly reactive lattice-disrupted calcium oxide

Publications (1)

Publication Number Publication Date
GB1354772A true GB1354772A (en) 1974-06-05

Family

ID=5771510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1597771A Expired GB1354772A (en) 1970-05-20 1971-05-20 Production of superreactive calcium oxide

Country Status (3)

Country Link
JP (1) JPS5133078B1 (en)
FR (1) FR2090162B1 (en)
GB (1) GB1354772A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR598852A (en) * 1925-12-28

Also Published As

Publication number Publication date
FR2090162B1 (en) 1975-02-21
DE2024471A1 (en) 1972-01-13
JPS5133078B1 (en) 1976-09-17
DE2024471B2 (en) 1973-01-11
FR2090162A1 (en) 1972-01-14

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Legal Events

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