GB498372A - Improvements in or relating to the production of agents containing magnesium oxide and calcium carbonate from magnesiumcontaining substances - Google Patents

Improvements in or relating to the production of agents containing magnesium oxide and calcium carbonate from magnesiumcontaining substances

Info

Publication number
GB498372A
GB498372A GB340438A GB340438A GB498372A GB 498372 A GB498372 A GB 498372A GB 340438 A GB340438 A GB 340438A GB 340438 A GB340438 A GB 340438A GB 498372 A GB498372 A GB 498372A
Authority
GB
United Kingdom
Prior art keywords
calcium carbonate
containing magnesium
carbon dioxide
magnesiumcontaining
relating
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
GB340438A
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.)
Koiile und Eisenforschung G M
Original Assignee
Koiile und Eisenforschung G M
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 Koiile und Eisenforschung G M filed Critical Koiile und Eisenforschung G M
Priority to GB340438A priority Critical patent/GB498372A/en
Publication of GB498372A publication Critical patent/GB498372A/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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02—Softening water by precipitation of the hardness

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

<PICT:0498372/III/1> A reagent for softening and de-acidifying water and consisting of magnesia and calcium carbonate is obtained by heating dolomite or mixtures containing magnesium and calcium compounds in an atmosphere containing carbon dioxide, the relation between the temperature and the part pressure due to carbon dioxide being such as to correspond to a point on the diagram lying within the area A B C D, and preferably within the area E F G H. Heat treatment under the specified condition may follow a period of heat treatment at higher temperature. A rotary furnace through which gas containing carbon dioxide is passed in the same direction as the material under treatment may be used.
GB340438A 1938-02-03 1938-02-03 Improvements in or relating to the production of agents containing magnesium oxide and calcium carbonate from magnesiumcontaining substances Expired GB498372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB340438A GB498372A (en) 1938-02-03 1938-02-03 Improvements in or relating to the production of agents containing magnesium oxide and calcium carbonate from magnesiumcontaining substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB340438A GB498372A (en) 1938-02-03 1938-02-03 Improvements in or relating to the production of agents containing magnesium oxide and calcium carbonate from magnesiumcontaining substances

Publications (1)

Publication Number Publication Date
GB498372A true GB498372A (en) 1939-01-06

Family

ID=9757699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB340438A Expired GB498372A (en) 1938-02-03 1938-02-03 Improvements in or relating to the production of agents containing magnesium oxide and calcium carbonate from magnesiumcontaining substances

Country Status (1)

Country Link
GB (1) GB498372A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637545A (en) * 1948-12-21 1953-05-05 Hicguet Max Process for the manufacture of magnesia and calcium carbonate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637545A (en) * 1948-12-21 1953-05-05 Hicguet Max Process for the manufacture of magnesia and calcium carbonate

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