FI811812L - Foerfarande foer minskning av radioaktiviteten av ur fosforiter framstaelld kalciumsulfat - Google Patents

Foerfarande foer minskning av radioaktiviteten av ur fosforiter framstaelld kalciumsulfat

Info

Publication number
FI811812L
FI811812L FI811812A FI811812A FI811812L FI 811812 L FI811812 L FI 811812L FI 811812 A FI811812 A FI 811812A FI 811812 A FI811812 A FI 811812A FI 811812 L FI811812 L FI 811812L
Authority
FI
Finland
Prior art keywords
kalciumsulfat
fosforiter
framstaelld
radioactivity
foerfarande foer
Prior art date
Application number
FI811812A
Other languages
English (en)
Other versions
FI66333C (fi
FI66333B (fi
Inventor
Hans-Friedrich Kurandt
Original Assignee
Huels Chemische Werke Ag
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 Huels Chemische Werke Ag filed Critical Huels Chemische Werke Ag
Publication of FI811812L publication Critical patent/FI811812L/fi
Application granted granted Critical
Publication of FI66333B publication Critical patent/FI66333B/fi
Publication of FI66333C publication Critical patent/FI66333C/fi

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
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/10—Processing by flocculation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Fertilizers (AREA)
FI811812A 1980-06-11 1981-06-10 Foerfarande foer minskning av radioaktiviteten av ur fosforiter framstaelld kalciumsulfat FI66333C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803021839 DE3021839A1 (de) 1980-06-11 1980-06-11 Verfahren zur verminderung der radioaktivitaet von aus phosphoriten hergestelltem calciumsulfat
DE3021839 1980-06-11

Publications (3)

Publication Number Publication Date
FI811812L true FI811812L (fi) 1981-12-12
FI66333B FI66333B (fi) 1984-06-29
FI66333C FI66333C (fi) 1984-10-10

Family

ID=6104323

Family Applications (1)

Application Number Title Priority Date Filing Date
FI811812A FI66333C (fi) 1980-06-11 1981-06-10 Foerfarande foer minskning av radioaktiviteten av ur fosforiter framstaelld kalciumsulfat

Country Status (6)

Country Link
US (1) US4399110A (fi)
EP (1) EP0041758B1 (fi)
JP (1) JPS5747716A (fi)
AT (1) AT373856B (fi)
DE (2) DE3021839A1 (fi)
FI (1) FI66333C (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652076B1 (fr) * 1989-09-20 1992-03-20 Rhone Poulenc Chimie Procede de recuperation des valeurs de terres rares dans les gypses.
MXPA03002981A (es) * 2000-10-05 2004-12-06 Pcs Nitrogen Fertilizer L P Proceso de descontaminacion del yeso.
US6822033B2 (en) 2001-11-19 2004-11-23 United States Gypsum Company Compositions and methods for treating set gypsum
US8070895B2 (en) 2007-02-12 2011-12-06 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8354567B2 (en) 2008-01-30 2013-01-15 David Donald Leavitt Destruction of mixed radioactive waste by catalyzed chemical oxidation
KR100949671B1 (ko) 2008-07-22 2010-03-29 한국원자력연구원 인석고 중 라듐핵종의 제염처리 방법
US8329308B2 (en) 2009-03-31 2012-12-11 United States Gypsum Company Cementitious article and method for preparing the same
CN101733197B (zh) * 2010-01-14 2014-04-09 什邡市新凤凰建材有限责任公司 磷石膏废渣中放射性物质的分离方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856187A (en) * 1929-05-30 1932-05-03 Firm Odda Smelteverk As Process of producing calcium nitrate and ammonium salts from phosphate rock and like phosphate material
US1936316A (en) * 1929-11-28 1933-11-21 Kunstdunger Patent Verwertungs Method of leaching phosphate rock with nitric acid and ammonium sulphate
NL97909C (fi) * 1954-02-01
US3382035A (en) * 1966-07-01 1968-05-07 Kaiser Aluminium Chem Corp Process for production of phosphoric acid
US3919395A (en) * 1970-11-18 1975-11-11 United States Gypsum Co Process for extraction of phosphorus compounds
US4012491A (en) * 1971-10-19 1977-03-15 United States Gypsum Company Phosphate process
DE2218382C3 (de) * 1972-04-15 1975-08-21 Gebrueder Giulini Gmbh, 6700 Ludwigshafen Verfahren zur Herstellung von reinem Calciumsulfat beim Phosphorsäurenaßaufschluß
GB1394734A (en) * 1972-04-26 1975-05-21 Unie Van Kunstmestfab Bv Process for the purification of waste product calcium sulphate
JPS4928353A (fi) * 1972-07-04 1974-03-13
US3880980A (en) * 1972-11-30 1975-04-29 Allied Chem Recovery of uranium from HCl digested phosphate rock solution
IT978376B (it) * 1973-01-23 1974-09-20 Montedison Spa Procedimento per la depurazione di soluzioni acquose di acido fosforico
JPS5175697A (ja) * 1974-12-27 1976-06-30 Onoda Chem Ind Co Ltd Rinkosekinobunkaihoho
US4073635A (en) * 1976-05-14 1978-02-14 Kemira Oy Process for producing a slurry suitable for the manufacture of a mixed fertilizer containing nitrogen plus phosphorus
US4180545A (en) * 1977-03-25 1979-12-25 Tennessee Valley Authority Uranium recovery from wet-process phosphoric acid
UST970007I4 (en) 1977-03-25 1978-05-02 Tennessee Valley Authority Uranium recovery from wet-process phosphoric acid
US4353877A (en) * 1978-03-13 1982-10-12 Rendall John S Extraction process
US4301122A (en) * 1978-10-19 1981-11-17 Mobil Oil Corporation Recovery of uranium from phosphate ores
US4311677A (en) * 1979-12-03 1982-01-19 Swiss Aluminium Ltd. Process for producing phosphoric acid
US4328193A (en) * 1980-02-27 1982-05-04 Olin Corporation Process for removing radium from monocalcium phosphate solutions by centrifugation

Also Published As

Publication number Publication date
DE3021839A1 (de) 1981-12-24
ATA256581A (de) 1983-07-15
US4399110A (en) 1983-08-16
JPS5747716A (en) 1982-03-18
FI66333C (fi) 1984-10-10
EP0041758B1 (de) 1983-09-21
FI66333B (fi) 1984-06-29
AT373856B (de) 1984-02-27
EP0041758A1 (de) 1981-12-16
DE3160948D1 (en) 1983-10-27

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: RUHR-STICKSTOFF AG