FI102891B1 - Process for treating plaster - Google Patents

Process for treating plaster

Info

Publication number
FI102891B1
FI102891B1 FI973289A FI973289A FI102891B1 FI 102891 B1 FI102891 B1 FI 102891B1 FI 973289 A FI973289 A FI 973289A FI 973289 A FI973289 A FI 973289A FI 102891 B1 FI102891 B1 FI 102891B1
Authority
FI
Finland
Prior art keywords
plaster
orthosilicic acid
water
binding agent
treating
Prior art date
Application number
FI973289A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI102891B (en
FI973289A0 (en
Inventor
Svetlana Pavlovna Vaenninen
Pertti Nieminen
Olga Sergejevna Popova
Original Assignee
Svetlana Pavlovna Vaenninen
Pertti Nieminen
Olga Sergejevna Popova
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 Svetlana Pavlovna Vaenninen, Pertti Nieminen, Olga Sergejevna Popova filed Critical Svetlana Pavlovna Vaenninen
Priority to FI973289A priority Critical patent/FI102891B1/en
Publication of FI973289A0 publication Critical patent/FI973289A0/en
Application granted granted Critical
Publication of FI102891B publication Critical patent/FI102891B/en
Publication of FI102891B1 publication Critical patent/FI102891B1/en

Links

Landscapes

  • Medicinal Preparation (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention relates to a process for treating plaster, in which process crystal water-containing plaster is transformed into a binding agent by means of dehydration. According to the invention, water is first of all removed at low temperature. To implement this, the pulverulent plaster is mixed with orthosilicic acid, mSiO2 x nH2O, with the orthosilicic acid being allowed to suck water up out of the plaster in the resulting mixture, after which the orthosilicic acid is separated off from the plaster and the treated plaster is dried by means of heat treatment. The binding agent which is obtained contains a large proportion of the α modification of the hemihydrate. <IMAGE>
FI973289A 1997-08-11 1997-08-11 Process for treating plaster FI102891B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI973289A FI102891B1 (en) 1997-08-11 1997-08-11 Process for treating plaster

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI973289 1997-08-11
FI973289A FI102891B1 (en) 1997-08-11 1997-08-11 Process for treating plaster

Publications (3)

Publication Number Publication Date
FI973289A0 FI973289A0 (en) 1997-08-11
FI102891B FI102891B (en) 1999-03-15
FI102891B1 true FI102891B1 (en) 1999-03-15

Family

ID=8549333

Family Applications (1)

Application Number Title Priority Date Filing Date
FI973289A FI102891B1 (en) 1997-08-11 1997-08-11 Process for treating plaster

Country Status (1)

Country Link
FI (1) FI102891B1 (en)

Also Published As

Publication number Publication date
FI102891B (en) 1999-03-15
FI973289A0 (en) 1997-08-11

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: VÄNNINEN, SVETLANA PAVLOVNA