ITRM20030020A1 - Conversione di fluorgesso a solfato di calcio. - Google Patents

Conversione di fluorgesso a solfato di calcio.

Info

Publication number
ITRM20030020A1
ITRM20030020A1 IT000020A ITRM20030020A ITRM20030020A1 IT RM20030020 A1 ITRM20030020 A1 IT RM20030020A1 IT 000020 A IT000020 A IT 000020A IT RM20030020 A ITRM20030020 A IT RM20030020A IT RM20030020 A1 ITRM20030020 A1 IT RM20030020A1
Authority
IT
Italy
Prior art keywords
fluorgex
conversion
calcium sulphate
sulphate
calcium
Prior art date
Application number
IT000020A
Other languages
English (en)
Inventor
Dennis J Eisele
Original Assignee
Alcoa Inc
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 Alcoa Inc filed Critical Alcoa Inc
Publication of ITRM20030020A0 publication Critical patent/ITRM20030020A0/it
Publication of ITRM20030020A1 publication Critical patent/ITRM20030020A1/it

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
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/468—Purification of calcium sulfates
    • 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
    • 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
    • C04B11/262—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke waste gypsum other than phosphogypsum
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
    • C04B22/142—Sulfates
    • C04B22/143—Calcium-sulfate
    • C04B22/146—Calcium-sulfate other waste Ca-sulfate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
IT000020A 2002-03-18 2003-01-20 Conversione di fluorgesso a solfato di calcio. ITRM20030020A1 (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36549902P 2002-03-18 2002-03-18
US10/164,466 US6517790B1 (en) 2002-03-18 2002-06-06 Converting fluorgyp to calcium sulfate

Publications (2)

Publication Number Publication Date
ITRM20030020A0 ITRM20030020A0 (it) 2003-01-20
ITRM20030020A1 true ITRM20030020A1 (it) 2003-09-19

Family

ID=26860586

Family Applications (1)

Application Number Title Priority Date Filing Date
IT000020A ITRM20030020A1 (it) 2002-03-18 2003-01-20 Conversione di fluorgesso a solfato di calcio.

Country Status (5)

Country Link
US (1) US6517790B1 (it)
CA (1) CA2415644A1 (it)
IT (1) ITRM20030020A1 (it)
MX (1) MXPA03000517A (it)
NO (1) NO20030275L (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060093548A1 (en) * 2004-11-03 2006-05-04 Alcoa World Alumina Llc Using an air jacket to capture the heat of reaction for waste heat recycle in the production of aluminum fluoride
FI20105500A (fi) * 2010-05-10 2011-11-11 Kemira Oyj Menetelmä kipsin valmistamiseksi
CN104310928B (zh) * 2014-08-10 2016-05-04 安徽锦洋氟化学有限公司 一种复合改性剂改性氟石膏的方法
US10865147B2 (en) 2017-09-12 2020-12-15 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College High strength concrete-like fluorogypsum-based blends and production methods

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174974A (en) 1978-04-14 1979-11-20 Standard Oil Company (Indiana) Process for converting coal ash slag into portland cement
US4402922A (en) * 1981-12-14 1983-09-06 United States Gypsum Company Process for rapid conversion of fluoroanhydrite to gypsum
US4451295A (en) 1982-09-29 1984-05-29 Standard Concrete Materials, Inc. Cements, mortars and concretes
EP0280000A1 (fr) 1987-02-25 1988-08-31 Jean Charles Jouve Procédé de fabrication de l'anhydrite et installation pour sa mise en oeuvre
US4935211A (en) * 1989-01-23 1990-06-19 Azar David G Fluorogypsum waste solidification material
CN1048702C (zh) * 1996-12-28 2000-01-26 西南工学院 一种早强型煤矸石水泥的制造方法
CN1106361C (zh) * 2000-09-04 2003-04-23 湖南湘铝有限责任公司 高强防潮建筑材料及其生产方法

Also Published As

Publication number Publication date
CA2415644A1 (en) 2003-09-18
NO20030275D0 (no) 2003-01-20
ITRM20030020A0 (it) 2003-01-20
US6517790B1 (en) 2003-02-11
NO20030275L (no) 2003-09-19
MXPA03000517A (es) 2004-07-29

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