GB529614A - Process for the production of granular calcium brucite - Google Patents

Process for the production of granular calcium brucite

Info

Publication number
GB529614A
GB529614A GB1642739A GB1642739A GB529614A GB 529614 A GB529614 A GB 529614A GB 1642739 A GB1642739 A GB 1642739A GB 1642739 A GB1642739 A GB 1642739A GB 529614 A GB529614 A GB 529614A
Authority
GB
United Kingdom
Prior art keywords
hydration
brucite
cold water
lime
rock
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
GB1642739A
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
Priority to GB1642739A priority Critical patent/GB529614A/en
Publication of GB529614A publication Critical patent/GB529614A/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)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

529,614. Magnesium and calcium oxides. GOUDGE, M. F. June 5, 1939, No. 16427. [Class 1 (iii)] Substantially dehydrated magnesia, of high purity containing traces of lime, silica, iron &c. is produced by calcining at 120D-1300‹C. in vertical or rotary lime kilns calcite rock matrix, e.g. Predazzites and Pencatites, containing brucite granules of distinctive scaly structure, and slaking with cold water. Hydration of the calcined brucite is minimized by keeping the temperature below 120‹C. Dry disrupted limepowder is air-separated and lime adhering to the magnesia granules which retain the distinctive structure is rapidly washed off with cold water. Screening, tabling, jigging &c. to remove coarser impurities is unnecessary for most good grade rock. Rotary drying at 400-500‹C. removes undesired hydration while 2 hours hot water washing secures complete hydration. Rock containing dolomite is calcined not above 1000‹C. to prevent dead-burning which causes abnormal hydration. Dead burning effects may be overcome by rotary drying the slaked product at 500‹C. and re-hydrating with cold water.
GB1642739A 1939-06-05 1939-06-05 Process for the production of granular calcium brucite Expired GB529614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1642739A GB529614A (en) 1939-06-05 1939-06-05 Process for the production of granular calcium brucite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1642739A GB529614A (en) 1939-06-05 1939-06-05 Process for the production of granular calcium brucite

Publications (1)

Publication Number Publication Date
GB529614A true GB529614A (en) 1940-11-25

Family

ID=10077120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1642739A Expired GB529614A (en) 1939-06-05 1939-06-05 Process for the production of granular calcium brucite

Country Status (1)

Country Link
GB (1) GB529614A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133792A (en) * 1964-05-19 Slip cast calcined magnesia products
US3322502A (en) * 1963-09-24 1967-05-30 Aluminium Lab Ltd Magnesium hydroxide and method of preparation
US4335083A (en) * 1981-03-05 1982-06-15 Carey Canada Inc. Method for leaching magnesium from magnesium hydroxide-containing composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133792A (en) * 1964-05-19 Slip cast calcined magnesia products
US3322502A (en) * 1963-09-24 1967-05-30 Aluminium Lab Ltd Magnesium hydroxide and method of preparation
US4335083A (en) * 1981-03-05 1982-06-15 Carey Canada Inc. Method for leaching magnesium from magnesium hydroxide-containing composition

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