ES8102060A1 - Procedimiento para preparar sulfato calcico semihidratado - Google Patents

Procedimiento para preparar sulfato calcico semihidratado

Info

Publication number
ES8102060A1
ES8102060A1 ES491971A ES491971A ES8102060A1 ES 8102060 A1 ES8102060 A1 ES 8102060A1 ES 491971 A ES491971 A ES 491971A ES 491971 A ES491971 A ES 491971A ES 8102060 A1 ES8102060 A1 ES 8102060A1
Authority
ES
Spain
Prior art keywords
hemihydrate
calcium sulphate
preparing calcium
calciumsulphate
preparing
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
Application number
ES491971A
Other languages
English (en)
Other versions
ES491971A0 (es
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.)
Unie Van Kunstmestfabrieken BV
Original Assignee
Unie Van Kunstmestfabrieken BV
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 Unie Van Kunstmestfabrieken BV filed Critical Unie Van Kunstmestfabrieken BV
Publication of ES491971A0 publication Critical patent/ES491971A0/es
Publication of ES8102060A1 publication Critical patent/ES8102060A1/es
Expired legal-status Critical Current

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
    • C01F11/466—Conversion of one form of calcium sulfate to another

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)
  • Fertilizers (AREA)

Abstract

PROCEDIMIENTO PARA PREPARAR SULFATO CALCICO SEMIHIDRATADO POR RECRISTALIZACION DE SULFATO DE CALCIO DIHIDRATADO. SE UTILIZA ACIDO NITRICO CONCENTRADO A TEMPERATURA ELEVADA, SEPARANDOSE LAS AGUAS MADRES DE RECRISTALIZACION DEL SULFATO FORMADO QUE SE CONCENTRA POR ABSORCION DE GASES NITROSOS. LAS AGUAS MADRES ACIDAS CONCENTRADAS SE UTILIZAN AL MENOS EN PARTE EN LA RECRISTALIZACION.
ES491971A 1979-05-30 1980-05-29 Procedimiento para preparar sulfato calcico semihidratado Expired ES8102060A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7904234A NL7904234A (nl) 1979-05-30 1979-05-30 Werkwijze voor het bereiden van calciumsulfaathemihy- draat.

Publications (2)

Publication Number Publication Date
ES491971A0 ES491971A0 (es) 1980-12-16
ES8102060A1 true ES8102060A1 (es) 1980-12-16

Family

ID=19833268

Family Applications (1)

Application Number Title Priority Date Filing Date
ES491971A Expired ES8102060A1 (es) 1979-05-30 1980-05-29 Procedimiento para preparar sulfato calcico semihidratado

Country Status (5)

Country Link
EP (1) EP0021474A1 (es)
JP (1) JPS5632325A (es)
ES (1) ES8102060A1 (es)
IN (1) IN152562B (es)
NL (1) NL7904234A (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876996B1 (de) * 1997-05-10 2001-12-19 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Verfahren zum Herstellen von Calciumsulfat-Alphahalbhydrat
FI123287B (fi) * 2009-04-20 2013-01-31 Kemira Oyj Paperituote
CN107879363A (zh) * 2017-11-06 2018-04-06 湖北三宁化工股份有限公司 一种硝酸分解磷尾矿制取硫酸钙晶须副产氢氧化镁和硝酸铵镁的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD118219A3 (es) * 1971-02-09 1976-02-20
DE2310460C3 (de) * 1973-03-02 1982-02-25 Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen Verfahren zur Herstellung von α-Halbhydratgips

Also Published As

Publication number Publication date
EP0021474A1 (en) 1981-01-07
NL7904234A (nl) 1980-12-02
JPS5632325A (en) 1981-04-01
IN152562B (es) 1984-02-11
ES491971A0 (es) 1980-12-16

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