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ES2168154T3 - Recuperacion de materiales de yeso. - Google Patents

Recuperacion de materiales de yeso.

Info

Publication number
ES2168154T3
ES2168154T3 ES98940478T ES98940478T ES2168154T3 ES 2168154 T3 ES2168154 T3 ES 2168154T3 ES 98940478 T ES98940478 T ES 98940478T ES 98940478 T ES98940478 T ES 98940478T ES 2168154 T3 ES2168154 T3 ES 2168154T3
Authority
ES
Spain
Prior art keywords
recovery
anhydrite
plaster
plaster materials
materials
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 - Lifetime
Application number
ES98940478T
Other languages
English (en)
Inventor
Patrick Graham O'brien
Clive Martin Schofield
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.)
CASO Ltd
Original Assignee
CASO 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 CASO Ltd filed Critical CASO Ltd
Application granted granted Critical
Publication of ES2168154T3 publication Critical patent/ES2168154T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/16—Waste materials; Refuse from building or ceramic industry
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

Procedimiento para recuperar materiales de yeso,caracterizado porque comprende: calentar el material de yeso usado a una temperatura de entre 200º C y 260º C para formar una anhidrita soluble, enfriar bruscamente la anhidrita y mantener la anhidrita en una solución acuosa hasta que se forme el dihidrato.
ES98940478T 1997-09-06 1998-09-04 Recuperacion de materiales de yeso. Expired - Lifetime ES2168154T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9718886A GB9718886D0 (en) 1997-09-06 1997-09-06 Plaster of paris reclamation

Publications (1)

Publication Number Publication Date
ES2168154T3 true ES2168154T3 (es) 2002-06-01

Family

ID=10818618

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98940478T Expired - Lifetime ES2168154T3 (es) 1997-09-06 1998-09-04 Recuperacion de materiales de yeso.

Country Status (7)

Country Link
EP (1) EP1021384B1 (es)
AU (1) AU8879898A (es)
DE (1) DE69803309T2 (es)
ES (1) ES2168154T3 (es)
GB (1) GB9718886D0 (es)
PT (1) PT1021384E (es)
WO (1) WO1999012861A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123613A1 (de) * 2008-05-09 2009-11-25 Claudius Peters Technologies GmbH Verfahren und Anlage zur Kalzinierung von Phosphorgips
ITRE20080066A1 (it) * 2008-07-10 2010-01-11 Andrea Leurini Recupero e riutilizzo di gessi dentali

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE119024C1 (es) *
DE1238374B (de) * 1965-04-24 1967-04-06 Giulini Ges Mit Beschraenkter Verfahren zur Herstellung von alpha-Calciumsulfat-Halbhydrat
CA1258961A (en) * 1984-09-17 1989-09-05 Yoshihiko Kudo PROCESS FOR PRODUCING .alpha.-FORM GYPSUM HEMIHYDRATE
GB2214836B (en) * 1988-02-08 1991-06-26 Bpb Industries Plc Improvements in method and apparatus for calcination

Also Published As

Publication number Publication date
GB9718886D0 (en) 1997-11-12
WO1999012861A1 (en) 1999-03-18
EP1021384A1 (en) 2000-07-26
DE69803309D1 (de) 2002-02-21
EP1021384B1 (en) 2001-11-21
PT1021384E (pt) 2002-05-31
AU8879898A (en) 1999-03-29
DE69803309T2 (de) 2002-10-02

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