IT999559B - Procedimento per la fabbricazione del gesso - Google Patents

Procedimento per la fabbricazione del gesso

Info

Publication number
IT999559B
IT999559B IT69724/73A IT6972473A IT999559B IT 999559 B IT999559 B IT 999559B IT 69724/73 A IT69724/73 A IT 69724/73A IT 6972473 A IT6972473 A IT 6972473A IT 999559 B IT999559 B IT 999559B
Authority
IT
Italy
Prior art keywords
plaster
procedure
manufacture
Prior art date
Application number
IT69724/73A
Other languages
English (en)
Original Assignee
Rech Des Phosphates Mineraux C
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 Rech Des Phosphates Mineraux C filed Critical Rech Des Phosphates Mineraux C
Application granted granted Critical
Publication of IT999559B publication Critical patent/IT999559B/it

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Removal Of Specific Substances (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
IT69724/73A 1972-10-02 1973-09-14 Procedimento per la fabbricazione del gesso IT999559B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7234872A FR2201682A5 (it) 1972-10-02 1972-10-02

Publications (1)

Publication Number Publication Date
IT999559B true IT999559B (it) 1976-03-10

Family

ID=9105067

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69724/73A IT999559B (it) 1972-10-02 1973-09-14 Procedimento per la fabbricazione del gesso

Country Status (12)

Country Link
US (1) US3951675A (it)
JP (1) JPS4993297A (it)
BE (1) BE805250A (it)
BR (1) BR7307628D0 (it)
CH (1) CH590795A5 (it)
DE (1) DE2349519C2 (it)
ES (1) ES418869A1 (it)
FR (1) FR2201682A5 (it)
GB (1) GB1443747A (it)
IT (1) IT999559B (it)
NL (1) NL179898C (it)
OA (1) OA04554A (it)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441457C (sv) * 1978-10-30 1990-06-18 Supra Ab Saett att framstaella slamma foer bestrykningsmedel foer papper, kartong och liknande, innehaallande kalciumsulfat som pigment
FR2446256A1 (fr) * 1979-01-12 1980-08-08 Azote & Prod Chim Procede de purification du gypse chimique
US4328193A (en) * 1980-02-27 1982-05-04 Olin Corporation Process for removing radium from monocalcium phosphate solutions by centrifugation
US4282192A (en) * 1980-02-27 1981-08-04 Olin Corporation Process for producing a calcium sulfate product containing low amounts of radium
US4388292A (en) * 1981-12-14 1983-06-14 United States Gypsum Company Process for reducing radioactive contamination in phosphogypsum
US4424196A (en) 1982-06-29 1984-01-03 United States Gypsum Company Phosphohemihydrate process for purification of gypsum
US4421731A (en) * 1982-09-29 1983-12-20 United States Gypsum Company Process for purifying phosphogypsum
US6822033B2 (en) 2001-11-19 2004-11-23 United States Gypsum Company Compositions and methods for treating set gypsum
WO2005118222A2 (en) * 2004-05-28 2005-12-15 Cargill, Incorporated Phosphogypsum treatment process
US7585485B2 (en) * 2006-07-03 2009-09-08 Tripoliven, C.A. Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials
WO2008062430A2 (en) * 2006-08-25 2008-05-29 Acc Limited A method of inertising the impurities in phosphogypsum
US8070895B2 (en) 2007-02-12 2011-12-06 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8329308B2 (en) 2009-03-31 2012-12-11 United States Gypsum Company Cementitious article and method for preparing the same
CN102500469A (zh) * 2011-10-20 2012-06-20 曲靖师范学院 一种磷石膏反浮选脱硅除杂的工艺
CN109680574B (zh) * 2019-02-18 2023-08-22 胡瑾 改性磷石膏路基
CN112934906A (zh) * 2019-12-11 2021-06-11 西南科技大学 一种利用灼烧生料无害化处理磷尾矿和磷石膏的方法
CN114653473B (zh) * 2022-03-30 2023-11-17 云南磷化集团有限公司 一种高效净化磷石膏的浮选方法
CN115286317A (zh) * 2022-08-12 2022-11-04 安徽工业大学 一种利用磷石膏制备人工砂的方法
CN115504695B (zh) * 2022-09-06 2023-12-12 宜昌邦普循环科技有限公司 一种磷石膏的回收方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2340613A (en) * 1940-03-04 1944-02-01 Du Pont Salt purification
US2606127A (en) * 1949-03-25 1952-08-05 Weber Herman Light-weight building materials and their manufacture from synthetic anhydrous calcium sulfate
US3326633A (en) * 1963-05-22 1967-06-20 John N Carothers Process for removing impurities from by-product gypsum
FR1601411A (it) * 1968-06-14 1970-08-24

Also Published As

Publication number Publication date
DE2349519C2 (de) 1986-07-31
NL179898B (nl) 1986-07-01
BE805250A (fr) 1974-03-25
FR2201682A5 (it) 1974-04-26
ES418869A1 (es) 1976-02-01
BR7307628D0 (pt) 1974-09-05
OA04554A (fr) 1980-04-30
NL7313481A (it) 1974-04-04
JPS4993297A (it) 1974-09-05
NL179898C (nl) 1986-12-01
GB1443747A (en) 1976-07-21
DE2349519A1 (de) 1974-04-18
CH590795A5 (it) 1977-08-31
US3951675A (en) 1976-04-20

Similar Documents

Publication Publication Date Title
SE407579B (sv) Forfarande for framstellning av n-fosfonometylglycin
IT975971B (it) Procedimento per la preparazione di clorosilani
IT999559B (it) Procedimento per la fabbricazione del gesso
NO140731C (no) Fremgangsmaate for fremstilling av dimetyleter
IT995276B (it) Procedimento per la produzione di fullulano
SE382053B (sv) Forfarande for framstellning av bifenylylalkanoylaminopyridiner
IT997911B (it) Procedimento per la produzione di etilbenzolo
SE383151B (sv) Forfarande for framstellning av 1-hydroxi-2-pyridoner
IT991000B (it) Procedimento per la produzione di polietilene
SE380272B (sv) Forfarande for framstellning av n-fosfonmetylglycin
SE393111B (sv) Forfarande for framstellning av d-2-halogen-6-metyl-8-substituerad - ergolin
IT991851B (it) Procedimento per la produzione del polipropilene
FI56830B (fi) Foerfarande foer framstaellning av asparaginylgrupper innehaollande biologiskt aktiva polypeptider
RO69492A2 (ro) Procedeu pentru prepararea perclor-metil-mercaptanului
SE415355B (sv) Forfarande for framstellning av fosfonotioureider
SE393808B (sv) Forfarande for framstellning av isomaltit
AR197040A1 (es) Procedimiento de preparacion de nuevas bifenilacetamidas
SE391717B (sv) Forfarande for framstellning av 4-aryl-5-aminoalkyl-4-oxazolin-2-oner
IT977792B (it) Procedimento per la preparazione di cianidrine
IT996099B (it) Procedimento di preparazione di amminoantrachinone
AR196254A1 (es) Procedimiento para la fabricacion de tetramisol
SE389862B (sv) Forfarande for framstellning av alfa-6-deoxitetracykliner
IT1000169B (it) Procedimento per la produzione di antrachinon ossazoli
IT996245B (it) Procedimento per la produzione di amminoantrachinoni
TR17286A (tr) Ueretanlarin imaline mahsus usul