NL1004650A1 - Method for purifying plaster. - Google Patents

Method for purifying plaster.

Info

Publication number
NL1004650A1
NL1004650A1 NL1004650A NL1004650A NL1004650A1 NL 1004650 A1 NL1004650 A1 NL 1004650A1 NL 1004650 A NL1004650 A NL 1004650A NL 1004650 A NL1004650 A NL 1004650A NL 1004650 A1 NL1004650 A1 NL 1004650A1
Authority
NL
Netherlands
Prior art keywords
plaster
purifying
purifying plaster
Prior art date
Application number
NL1004650A
Other languages
Dutch (nl)
Other versions
NL1004650C2 (en
Inventor
Jukka Karhunen
Hannu Aeijaelae
Kari Lehtinen
Veikko Myllylae
Original Assignee
Kemira Chemicals Oy
Kemira Agro Oy
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 Kemira Chemicals Oy, Kemira Agro Oy filed Critical Kemira Chemicals Oy
Publication of NL1004650A1 publication Critical patent/NL1004650A1/en
Application granted granted Critical
Publication of NL1004650C2 publication Critical patent/NL1004650C2/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/002—High gradient magnetic separation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
NL1004650A 1995-11-29 1996-11-29 Method for purifying plaster. NL1004650C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI955761 1995-11-29
FI955761A FI101787B (en) 1995-11-29 1995-11-29 Gypsum cleaning method

Publications (2)

Publication Number Publication Date
NL1004650A1 true NL1004650A1 (en) 1997-06-17
NL1004650C2 NL1004650C2 (en) 1998-12-08

Family

ID=8544461

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1004650A NL1004650C2 (en) 1995-11-29 1996-11-29 Method for purifying plaster.

Country Status (2)

Country Link
FI (1) FI101787B (en)
NL (1) NL1004650C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI120819B (en) * 2008-04-09 2010-03-31 Kemira Oyj Procedure for cleaning plaster
FI125550B (en) 2013-11-22 2015-11-30 Teknologian Tutkimuskeskus Vtt Oy Procedure for the recovery of rare earth metals from waste sulphates

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2695678B2 (en) * 1990-06-20 1998-01-14 三菱重工業株式会社 Flue gas desulfurization method

Also Published As

Publication number Publication date
FI955761A (en) 1997-05-30
FI101787B1 (en) 1998-08-31
FI101787B (en) 1998-08-31
FI955761A0 (en) 1995-11-29
NL1004650C2 (en) 1998-12-08

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Legal Events

Date Code Title Description
AD1A A request for search or an international type search has been filed
RD2N Patents in respect of which a decision has been taken or a report has been made (novelty report)

Effective date: 19981006

PD2B A search report has been drawn up
SD Assignments of patents

Owner name: KEMIRA OYJ

Owner name: KEMIRA AGRO OY

VD1 Lapsed due to non-payment of the annual fee

Effective date: 20070601