NL8000116A - Werkwijze voor het zuiveren van fosfogips. - Google Patents

Werkwijze voor het zuiveren van fosfogips. Download PDF

Info

Publication number
NL8000116A
NL8000116A NL8000116A NL8000116A NL8000116A NL 8000116 A NL8000116 A NL 8000116A NL 8000116 A NL8000116 A NL 8000116A NL 8000116 A NL8000116 A NL 8000116A NL 8000116 A NL8000116 A NL 8000116A
Authority
NL
Netherlands
Prior art keywords
phosphogypsum
ozone
treatment
suspension
whiteness
Prior art date
Application number
NL8000116A
Other languages
English (en)
Dutch (nl)
Original Assignee
Charbonnages Ste Chimique
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 Charbonnages Ste Chimique filed Critical Charbonnages Ste Chimique
Publication of NL8000116A publication Critical patent/NL8000116A/nl

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)
NL8000116A 1979-01-12 1980-01-08 Werkwijze voor het zuiveren van fosfogips. NL8000116A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7900772A FR2446256A1 (fr) 1979-01-12 1979-01-12 Procede de purification du gypse chimique
FR7900772 1979-01-12

Publications (1)

Publication Number Publication Date
NL8000116A true NL8000116A (nl) 1980-07-15

Family

ID=9220693

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8000116A NL8000116A (nl) 1979-01-12 1980-01-08 Werkwijze voor het zuiveren van fosfogips.

Country Status (19)

Country Link
US (1) US4344925A (de)
AT (1) AT368987B (de)
BE (1) BE880952A (de)
BG (1) BG39465A3 (de)
BR (1) BR8000193A (de)
CA (1) CA1139079A (de)
DE (1) DE2952571A1 (de)
ES (1) ES487650A1 (de)
FI (1) FI66332C (de)
FR (1) FR2446256A1 (de)
GB (1) GB2039269B (de)
IN (1) IN153514B (de)
IT (1) IT1145402B (de)
MA (1) MA18684A1 (de)
NL (1) NL8000116A (de)
PL (1) PL119292B1 (de)
PT (1) PT70680A (de)
SE (2) SE7910257L (de)
ZA (1) ZA796744B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533528A (en) * 1983-07-15 1985-08-06 United States Gypsum Company Process for continuously calcining gypsum to low dispersed consistency stucco
DE4242200C1 (de) * 1992-12-15 1993-10-28 Steag Ag Verfahren zur Verbesserung des Weißgrades von Rohgips
US6033468A (en) * 1997-01-29 2000-03-07 Folks; Timothy S. Interground white blended cement
US6007620A (en) * 1997-01-29 1999-12-28 Folks; Timothy S. Process to make interground, white, blended cement
CN102634843B (zh) * 2012-04-27 2015-04-22 昆明理工大学 一种磷石膏制取微米级硫酸钙颗粒和晶须的方法
CN103466577B (zh) * 2013-09-04 2016-01-20 贵州锦麟化工有限责任公司 提高湿法磷酸品质的方法
CN103496729B (zh) * 2013-09-04 2015-09-30 贵州锦麟化工有限责任公司 提高磷酸生产过程中副产磷石膏质量的方法
CN115477485B (zh) * 2022-09-06 2023-08-22 常州大学 一种利用偶氮染料硫酸废水制备α-半水石膏的方法
CN115504499A (zh) * 2022-10-21 2022-12-23 广州市勃发环境科技有限公司 一种含硫酸及硫酸盐的化工废水精制石膏的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA802105A (en) * 1968-12-24 Hayakawa Masashi Process for preparing gypsum hemihydrate
US1548358A (en) * 1924-05-26 1925-08-04 Rumford Chemical Works Plaster of paris and method of making the same
GB339797A (de) * 1928-12-18 1930-12-18 Rene Perdu
US2197003A (en) * 1937-11-18 1940-04-16 Glidden Co Process for making pigments
DE1467470C2 (de) * 1963-10-28 1974-06-12 Pluess-Staufer Ag, Oftringen, Aargau (Schweiz) Verbesserung des Weiß grades von Kreide, Calcit oder Dolomit
US3616900A (en) * 1969-07-09 1971-11-02 Engelhard Min & Chem Method for bleaching gray kaolin clay
US4113835A (en) * 1972-07-06 1978-09-12 Veba-Chemie Aktiengesellschaft Process for preparing pure synthetic calcium sulfate semihydrate
FR2201682A5 (de) * 1972-10-02 1974-04-26 Cerphos
GB1394910A (en) * 1972-10-23 1975-05-21 Pluss Stauffer Ag Process for the optical brightening of minerals
SE417104B (sv) * 1978-10-30 1981-02-23 Supra Ab Sett att rena respektive bleka fororenat kalciumsulfat avsedd att anvendas som pigment och/eller fyllmedel

Also Published As

Publication number Publication date
GB2039269A (en) 1980-08-06
PT70680A (fr) 1980-02-01
ZA796744B (en) 1980-11-26
IN153514B (de) 1984-07-21
SE7910257L (sv) 1980-07-13
SE434046B (sv) 1984-07-02
IT1145402B (it) 1986-11-05
FI66332C (fi) 1984-10-10
US4344925A (en) 1982-08-17
CA1139079A (en) 1983-01-11
MA18684A1 (fr) 1980-07-01
BR8000193A (pt) 1980-05-27
GB2039269B (en) 1982-10-20
FI800041A (fi) 1980-07-13
PL221311A1 (de) 1980-10-06
BE880952A (fr) 1980-04-16
FR2446256A1 (fr) 1980-08-08
PL119292B1 (en) 1981-12-31
BG39465A3 (en) 1986-06-16
DE2952571A1 (de) 1980-07-24
IT8047568A0 (it) 1980-01-11
FI66332B (fi) 1984-06-29
AT368987B (de) 1982-11-25
ES487650A1 (es) 1980-06-16
FR2446256B1 (de) 1983-05-27
ATA821379A (de) 1982-04-15

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed
BV The patent application has lapsed