ES356722A1 - Procedimiento e instalacion para el tratamiento de cuerpos solidos en suspension en un liquido acuoso. - Google Patents

Procedimiento e instalacion para el tratamiento de cuerpos solidos en suspension en un liquido acuoso.

Info

Publication number
ES356722A1
ES356722A1 ES356722A ES356722A ES356722A1 ES 356722 A1 ES356722 A1 ES 356722A1 ES 356722 A ES356722 A ES 356722A ES 356722 A ES356722 A ES 356722A ES 356722 A1 ES356722 A1 ES 356722A1
Authority
ES
Spain
Prior art keywords
mixture
gypsum
heating
temperature
calcium sulphate
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
ES356722A
Other languages
English (en)
Spanish (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.)
Ets Poliet & Chausson
Original Assignee
Ets Poliet & Chausson
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 Ets Poliet & Chausson filed Critical Ets Poliet & Chausson
Publication of ES356722A1 publication Critical patent/ES356722A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
    • C04B11/032—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the wet process, e.g. dehydrating in solution or under saturated vapour conditions, i.e. to obtain alpha-hemihydrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J16/00—Chemical processes in general for reacting liquids with non- particulate solids, e.g. sheet material; Apparatus specially adapted therefor
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Catalysts (AREA)
ES356722A 1967-08-25 1968-07-31 Procedimiento e instalacion para el tratamiento de cuerpos solidos en suspension en un liquido acuoso. Expired ES356722A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR119019 1967-08-25

Publications (1)

Publication Number Publication Date
ES356722A1 true ES356722A1 (es) 1970-02-16

Family

ID=8637363

Family Applications (1)

Application Number Title Priority Date Filing Date
ES356722A Expired ES356722A1 (es) 1967-08-25 1968-07-31 Procedimiento e instalacion para el tratamiento de cuerpos solidos en suspension en un liquido acuoso.

Country Status (8)

Country Link
BE (1) BE717260A (en:Method)
CH (1) CH510583A (en:Method)
DE (1) DE1767937C3 (en:Method)
ES (1) ES356722A1 (en:Method)
FR (1) FR1548410A (en:Method)
GB (1) GB1246664A (en:Method)
LU (1) LU56676A1 (en:Method)
NL (1) NL6812084A (en:Method)

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
US8793897B2 (en) * 2010-08-11 2014-08-05 Grenzebach Bsh Gmbh Process and device for stabilising, cooling and dehumidifying gypsum plaster
CN110498626B (zh) * 2019-09-09 2022-04-05 太原科技大学 一种α型半水石膏的生产方法

Also Published As

Publication number Publication date
NL6812084A (en:Method) 1969-02-27
DE1767937A1 (de) 1972-03-09
BE717260A (en:Method) 1968-12-02
FR1548410A (en:Method) 1968-12-06
DE1767937B2 (de) 1973-08-02
LU56676A1 (en:Method) 1968-11-18
CH510583A (fr) 1971-07-31
GB1246664A (en) 1971-09-15
DE1767937C3 (de) 1974-03-07

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