GB319690A - Improvements in processes for extracting magnesia from dolomite - Google Patents

Improvements in processes for extracting magnesia from dolomite

Info

Publication number
GB319690A
GB319690A GB28068/29A GB2806829A GB319690A GB 319690 A GB319690 A GB 319690A GB 28068/29 A GB28068/29 A GB 28068/29A GB 2806829 A GB2806829 A GB 2806829A GB 319690 A GB319690 A GB 319690A
Authority
GB
United Kingdom
Prior art keywords
magnesia
dolomite
carbonate
extracting
processes
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
GB28068/29A
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.)
RWK RHEIN WESTFAEL KALKWERKE
Original Assignee
RWK RHEIN WESTFAEL KALKWERKE
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 RWK RHEIN WESTFAEL KALKWERKE filed Critical RWK RHEIN WESTFAEL KALKWERKE
Publication of GB319690A publication Critical patent/GB319690A/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
    • C01F5/00—Compounds of magnesium
    • C01F5/14—Magnesium hydroxide
    • C01F5/16—Magnesium hydroxide by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

319,690. Rheinisch - Westfõlische Kalkwerke. Sept. 26, 1925, [Convention date]. Magnesium oxide, hydroxide, and carbonate; calcium carbonate.-In a process for the extraction of magnesia from dolomite, in which dolomite is burnt at a temperature which decomposes only the magnesium carbonate, and the magnesia is separated from the unchanged calcinm carbonate by windsifting, the half burnt and ground dolomite is treated, before separation, with water, and preferably also carbon dioxide, to convert the magnesia into hydroxide or basic carbonate.
GB28068/29A 1928-09-26 1929-09-16 Improvements in processes for extracting magnesia from dolomite Expired GB319690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE319690X 1928-09-26

Publications (1)

Publication Number Publication Date
GB319690A true GB319690A (en) 1930-08-21

Family

ID=6152213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28068/29A Expired GB319690A (en) 1928-09-26 1929-09-16 Improvements in processes for extracting magnesia from dolomite

Country Status (1)

Country Link
GB (1) GB319690A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066123A (en) * 2019-04-30 2019-07-30 镇江苏博特新材料有限公司 A kind of method preparing light magnesium oxide and calcium oxide and its application for being used to prepare calcium and magnesium composite expanding agent
CN110066127A (en) * 2019-04-30 2019-07-30 镇江苏博特新材料有限公司 A kind of ultra-long and ultra-thick structural concrete calcium and magnesium composite expanding agent and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066123A (en) * 2019-04-30 2019-07-30 镇江苏博特新材料有限公司 A kind of method preparing light magnesium oxide and calcium oxide and its application for being used to prepare calcium and magnesium composite expanding agent
CN110066127A (en) * 2019-04-30 2019-07-30 镇江苏博特新材料有限公司 A kind of ultra-long and ultra-thick structural concrete calcium and magnesium composite expanding agent and preparation method thereof
WO2020220499A1 (en) * 2019-04-30 2020-11-05 镇江苏博特新材料有限公司 Method for preparing magnesium oxide light and calcium oxide light and application thereof in preparation of calcium-magnesium composite expanding agent
CN110066123B (en) * 2019-04-30 2020-11-17 镇江苏博特新材料有限公司 Method for preparing light magnesium oxide and calcium oxide and application of light magnesium oxide and calcium oxide in preparation of calcium-magnesium composite expanding agent
CN110066127B (en) * 2019-04-30 2021-08-03 镇江苏博特新材料有限公司 Calcium-magnesium composite expanding agent for ultra-long and ultra-thick structural concrete and preparation method thereof
US11548818B2 (en) 2019-04-30 2023-01-10 Sobute New Materials Co., Ltd Method for preparing light magnesium oxide and calcium oxide and application thereof for preparing calcium-magnesium composite expanding agent

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