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ES2106968T3 - Procedimiento para preparar sulfato calcico. - Google Patents

Procedimiento para preparar sulfato calcico.

Info

Publication number
ES2106968T3
ES2106968T3 ES93304447T ES93304447T ES2106968T3 ES 2106968 T3 ES2106968 T3 ES 2106968T3 ES 93304447 T ES93304447 T ES 93304447T ES 93304447 T ES93304447 T ES 93304447T ES 2106968 T3 ES2106968 T3 ES 2106968T3
Authority
ES
Spain
Prior art keywords
calcium sulphate
calcium
sulfuric acid
preparation
carbonate
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 - Lifetime
Application number
ES93304447T
Other languages
English (en)
Inventor
Piergiorgio Nencini
Rutilio Baronti
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.)
Tioxide Group Services Ltd
Original Assignee
Tioxide Group Services Ltd
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 Tioxide Group Services Ltd filed Critical Tioxide Group Services Ltd
Application granted granted Critical
Publication of ES2106968T3 publication Critical patent/ES2106968T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/03—Papermaking liquor

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)

Abstract

SE PRESENTA UN PROCESO SENCILLO PARA LA PREPARACION DE UN DIHIDRATO DE SULFATO CALCICO ACICULAR EN QUE UNA SUSPENSION DE CARBONATO CALCICO QUE CONTIENE DE 100 A 800 GRAMOS POR LIBRE DE CARBONATO CALCICO SE MEZCLA CON UNA SOLUCION DE ACIDO SULFURICO QUE CONTIENE DE 80 A 500 GRAMOS POR LITRO DE ACIDO SULFURICO EN PROPORCIONES QUE PRODUCEN UNA SOLUCION DE SULFATO CALCICO CON UN PH DE 0,5 A 1,5. EL PROCESO SE PUEDE LLEVAR A CABO PARA NEUTRALIZAR UN SUBPRODUCTO DE ACIDO SULFURICO DE UN PREPARADO DE DIOXIDO DE TITANIO CON CAL TRITURADA. PREFERENTEMENTE SE AGITA EL SULFATO CALCICO TRAS LA FORMACION PARA REDUCIR EL NIVEL DE CARBONATO QUE NO HA REACCIONADO. EL SULFATO CALCICO PRODUCIDO TIENE UNA PROPORCION DIMENSIONAL DE AL MENOS 4:1 Y UNAS PROPIEDADES EXCELENTES PARA UTILIZARLO EN LA FABRICACION DE PAPEL. EL PROCESO PERMITE LA PRODUCCION DE SULFATO CALCICO ACICULAR SIN LA UTILIZACION DE PROCEDIMIENTOS ESPECIALES DE CRISTALIZACION.
ES93304447T 1992-07-01 1993-06-08 Procedimiento para preparar sulfato calcico. Expired - Lifetime ES2106968T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929213998A GB9213998D0 (en) 1992-07-01 1992-07-01 Process for preparing calcium sulphate

Publications (1)

Publication Number Publication Date
ES2106968T3 true ES2106968T3 (es) 1997-11-16

Family

ID=10718039

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93304447T Expired - Lifetime ES2106968T3 (es) 1992-07-01 1993-06-08 Procedimiento para preparar sulfato calcico.

Country Status (10)

Country Link
US (1) US5376351A (es)
EP (1) EP0577272B1 (es)
JP (1) JP3393154B2 (es)
CA (1) CA2099041C (es)
DE (1) DE69313373T2 (es)
ES (1) ES2106968T3 (es)
FI (1) FI104419B (es)
GB (1) GB9213998D0 (es)
MY (1) MY110367A (es)
ZA (1) ZA934232B (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2095184B1 (es) * 1994-07-15 1997-09-01 Compania General Yesera S A Procedimiento para la obtencion de una carga radial especialmente para uso en la industria papelera, producto de carga formado por cocristalizacion de sulfatos de calcio anhidro y hemihidrato y composicion util para la preparacion de dicha carga.
FI964907A7 (fi) * 1995-01-31 1996-12-09 Compania General Yesera S A Menetelmä kalsiumsulfaattihydraattitäyteaineen aikaansaamiseksi neulan muotoisten kiteiden muodossa ja sen käyttö paperiteollisuudessa
JPH08283018A (ja) * 1995-04-12 1996-10-29 Kowa:Kk 石膏の製造方法
US5590983A (en) * 1995-09-05 1997-01-07 Angell; Edwin C. Method of improving soil irrigation with an improved solution grade calcium sulfate dihydrate
DE19812261A1 (de) 1998-03-20 1999-09-23 Bayer Ag Verfahren zur Aufarbeitung von Dünnsäure aus der TiO¶2¶-Herstellung
DE19812260A1 (de) 1998-03-20 1999-09-23 Bayer Ag Verfahren zur Herstellung von Eisenoxid-Pigmenten aus Dünnsäure aus der TiO¶2¶-Herstellung
DE19812262A1 (de) 1998-03-20 1999-09-23 Bayer Ag Verfahren zur Aufarbeitung von Dünnsäure aus der TiO2-Herstellung
EP2192088A1 (de) 2008-11-25 2010-06-02 Ferro Duo GmbH Verfahren zur Herstellung von Calciumhydroxid
RU2400426C1 (ru) * 2009-05-04 2010-09-27 Андрей Иванович АНДРЕЕВ Способ получения гипса
RU2445267C1 (ru) * 2010-07-23 2012-03-20 Открытое акционерное общество "Научно-исследовательский институт по удобрениям и инсектофунгицидам им. проф. Я.В. Самойлова" (ОАО "НИУИФ") Способ получения сульфата кальция
CN104016398B (zh) * 2014-06-23 2016-07-06 武善东 一种利用工业废水中的稀硫酸生产硫酸盐的方法
CN104211104B (zh) * 2014-08-23 2018-11-23 耿兆翔 火力煤电厂烟气脱硫石膏废渣的分离回收利用方法
CN104499040B (zh) * 2014-12-05 2017-06-30 上海宝冶钢渣综合开发实业有限公司 一种制备石膏晶须的方法
CN111484062A (zh) * 2020-04-15 2020-08-04 江苏一夫科技股份有限公司 一种二水硫酸钙、其制备方法和用途
US20230180805A1 (en) * 2021-12-15 2023-06-15 EFCO Products Inc. Opacifying Agents

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1467292A1 (de) * 1963-08-24 1969-01-23 Yawata Chem Ind Co Ltd Verfahren zur kontinuierlichen Herstellung von Gips und Eisenoxyd
FR2048120A5 (es) * 1969-06-02 1971-03-19 Strauch Dieter
JPS5143478B2 (es) * 1972-10-23 1976-11-22
JPS5146679B2 (es) * 1973-03-23 1976-12-10
JPS51109295A (ja) * 1975-03-22 1976-09-28 Idemitsu Kosan Co Kaishitsusaretaketsushoseisetsukoseninoseizohoho
JPS51141793A (en) * 1975-06-02 1976-12-06 Asahi Chem Ind Co Ltd Method of forming calcium sulfate whisker
JPS5211193A (en) * 1975-07-17 1977-01-27 Idemitsu Kosan Co Ltd Production of crystalline gypsum fiber
DE2621611C3 (de) * 1976-05-14 1981-06-25 Skw Trostberg Ag, 8223 Trostberg Anorganische Fasern, Verfahren zu deren Herstellung sowie deren Verwendung
JPS5315292A (en) * 1976-07-29 1978-02-10 Chiyoda Chem Eng & Constr Co Ltd Production of high-strength needle crystals of gypsum
JPS5342195A (en) * 1976-09-28 1978-04-17 Onoda Cement Co Ltd Production of long-fibered hemihydrate gypsum crystals
JPS5825080B2 (ja) * 1976-10-22 1983-05-25 関谷 道雄 繊維状硫酸カルシウムの製造法
JPS5351199A (en) * 1976-10-22 1978-05-10 Michio Sekiya Manufacturing process for hydrate of crystalline calcium sulfate
DE2702098A1 (de) * 1977-01-19 1978-07-20 Bayer Ag Verfahren zur herstellung und die verwendung von whiskern aus calciumsulfat
JPS5913448B2 (ja) * 1977-12-14 1984-03-29 日本ハ−ドバ−ド工業株式会社 嵩高い硫酸カルシウム二水塩針状結晶の製造方法および該方法に用いられる装置
JPS5490098A (en) * 1977-12-28 1979-07-17 Idemitsu Kosan Co Ltd Method of producing fibrous gypsum
JPS5673628A (en) * 1979-11-20 1981-06-18 Kubota Ltd Manufacture of gypsum fiber
SE8302590L (sv) * 1983-05-06 1984-11-07 Boliden Ab Forfarande for framstellning av fibergips (i)
JP2768713B2 (ja) * 1989-01-11 1998-06-25 住友林業株式会社 ▲ｉｉ▼型無水セッコウ繊維の製造方法
FR2647433B1 (fr) * 1989-05-23 1991-10-31 Lafarge Coppee Da Procede de preparation par voie aqueuse de sulfate de calcium purifie
EP1870202B1 (de) 2006-06-23 2009-03-11 The Gleason Works Werkzeugmaschine
JP5146679B2 (ja) 2008-11-21 2013-02-20 株式会社日向製錬所 石炭微粒子の分離方法

Also Published As

Publication number Publication date
JP3393154B2 (ja) 2003-04-07
CA2099041A1 (en) 1994-01-02
FI933005L (fi) 1994-01-02
GB9213998D0 (en) 1992-08-12
DE69313373D1 (de) 1997-10-02
EP0577272A1 (en) 1994-01-05
ZA934232B (en) 1994-01-12
JPH0692632A (ja) 1994-04-05
EP0577272B1 (en) 1997-08-27
CA2099041C (en) 2003-09-09
FI104419B (fi) 2000-01-31
DE69313373T2 (de) 1998-01-02
FI933005A0 (fi) 1993-06-30
US5376351A (en) 1994-12-27
MY110367A (en) 1998-04-30

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