FR2372120A1 - SPHERICAL GYPSUM AND ITS PREPARATION PROCESS - Google Patents

SPHERICAL GYPSUM AND ITS PREPARATION PROCESS

Info

Publication number
FR2372120A1
FR2372120A1 FR7717906A FR7717906A FR2372120A1 FR 2372120 A1 FR2372120 A1 FR 2372120A1 FR 7717906 A FR7717906 A FR 7717906A FR 7717906 A FR7717906 A FR 7717906A FR 2372120 A1 FR2372120 A1 FR 2372120A1
Authority
FR
France
Prior art keywords
gypsum
preparation process
spherical
weight
acidic medium
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.)
Granted
Application number
FR7717906A
Other languages
French (fr)
Other versions
FR2372120B1 (en
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
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 Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Publication of FR2372120A1 publication Critical patent/FR2372120A1/en
Application granted granted Critical
Publication of FR2372120B1 publication Critical patent/FR2372120B1/fr
Granted 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
    • C04B11/00—Calcium sulfate cements
    • 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
    • C01F11/46—Sulfates
    • C01F11/466—Conversion of one form of calcium sulfate to another
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
    • C04B14/365—Gypsum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Inorganic Fibers (AREA)

Abstract

L'invention a pour objet du gypse sphérique obtenu à partir de gypse fibreux dont les fibres s'entrelacent, préparé par un procédé consistant à soumettre, en poids, de 0,5 à 80 % de gypse semi-hydraté de type beta , ou de 5 à 80 % de gypse dihydraté, ou de 5 à 80 % d'un mélange de ces gypses à une réaction hydrothermique dans un milieu acide, ces proportions étant exprimées par rapport au poids du milieu acide.The invention relates to spherical gypsum obtained from fibrous gypsum whose fibers intertwine, prepared by a process consisting in subjecting, by weight, from 0.5 to 80% of beta-type hemi-hydrated gypsum, or from 5 to 80% of gypsum dihydrate, or from 5 to 80% of a mixture of these gypsum in a hydrothermal reaction in an acidic medium, these proportions being expressed relative to the weight of the acidic medium.

FR7717906A 1976-11-29 1977-06-10 SPHERICAL GYPSUM AND ITS PREPARATION PROCESS Granted FR2372120A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51142212A JPS5817132B2 (en) 1976-11-29 1976-11-29 Spherical settsukou and its manufacturing method

Publications (2)

Publication Number Publication Date
FR2372120A1 true FR2372120A1 (en) 1978-06-23
FR2372120B1 FR2372120B1 (en) 1981-12-24

Family

ID=15309996

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717906A Granted FR2372120A1 (en) 1976-11-29 1977-06-10 SPHERICAL GYPSUM AND ITS PREPARATION PROCESS

Country Status (7)

Country Link
JP (1) JPS5817132B2 (en)
CA (1) CA1117271A (en)
DE (1) DE2728213A1 (en)
FR (1) FR2372120A1 (en)
GB (1) GB1536097A (en)
IT (1) IT1115860B (en)
SE (1) SE7706274L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480267A1 (en) * 1980-04-14 1981-10-16 Idemitsu Kosan Co CONTINUOUS PROCESS FOR THE PRODUCTION OF LOW SPECIFIC CALCIUM SULFATE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5556060A (en) * 1978-10-14 1980-04-24 Idemitsu Kosan Co Refractory material
JPS55152815U (en) * 1979-04-18 1980-11-04
JPS55144416A (en) * 1979-05-01 1980-11-11 Idemitsu Kosan Co Ltd Manufacture of light weight spherical gypsum
CN114014620B (en) * 2021-10-29 2022-12-06 北京建筑材料科学研究总院有限公司 Lightweight aggregate and preparation method and application thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812235B2 (en) * 1975-09-29 1983-03-07 オノダセメント カブシキガイシヤ Setsukou Shinjiyouketsuyouseni no Seizouhouhou

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480267A1 (en) * 1980-04-14 1981-10-16 Idemitsu Kosan Co CONTINUOUS PROCESS FOR THE PRODUCTION OF LOW SPECIFIC CALCIUM SULFATE

Also Published As

Publication number Publication date
DE2728213A1 (en) 1978-06-01
FR2372120B1 (en) 1981-12-24
IT1115860B (en) 1986-02-10
SE7706274L (en) 1978-05-30
JPS5366895A (en) 1978-06-14
CA1117271A (en) 1982-02-02
JPS5817132B2 (en) 1983-04-05
GB1536097A (en) 1978-12-20

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Legal Events

Date Code Title Description
ST Notification of lapse