GB482096A - Improvements in or relating to the production of crystals - Google Patents

Improvements in or relating to the production of crystals

Info

Publication number
GB482096A
GB482096A GB19550/37A GB1955037A GB482096A GB 482096 A GB482096 A GB 482096A GB 19550/37 A GB19550/37 A GB 19550/37A GB 1955037 A GB1955037 A GB 1955037A GB 482096 A GB482096 A GB 482096A
Authority
GB
United Kingdom
Prior art keywords
solution
crystals
vessel
vessels
filter
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
GB19550/37A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB482096A publication Critical patent/GB482096A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/54—Organic compounds
    • C30B29/56—Tartrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

<PICT:0482096/III/1> Large crystals of Rochelle salts &c. are formed by circulating a solution in a system comprising at least two vessels 4, 6 in communication with each other and maintained at different temperatures, keeping the solution in the warmer vessel 4 in a saturated condition by passing it through crystals so that it enters the cooler vessel 6 in a supersaturated condition, and growing a crystal in the latter vessel. The vessels 4, 6 are immersed in liquid in chambers 3, 5 at different temperatures, and the solution is circulated by a pump 25 which forces it through a filter 19 and a layer of crystals enclosed between the filter and a perforated tube 18, which leads the solution to the pipe 7 opening into a vessel 6. The liquid in the vessels 3, 5 may be heated by electric elements 10, 11, 12.
GB19550/37A 1936-07-14 1937-07-14 Improvements in or relating to the production of crystals Expired GB482096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE482096X 1936-07-14

Publications (1)

Publication Number Publication Date
GB482096A true GB482096A (en) 1938-03-23

Family

ID=6542764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19550/37A Expired GB482096A (en) 1936-07-14 1937-07-14 Improvements in or relating to the production of crystals

Country Status (1)

Country Link
GB (1) GB482096A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562325A (en) * 1947-01-30 1951-07-31 Bendix Aviat Corp Apparatus for producing artificial crystals
DE102006029830A1 (en) * 2006-06-27 2008-01-03 Schmidt-Köksal, Michael Growing of deuterated alanine doped triglycine sulfate monocrystals from a solution for night vision device, comprises arranging a crystal holder in a chamber of a device and pumping the solution in a circulation with the chamber
FR2909687A1 (en) * 2006-12-06 2008-06-13 Centre Nat Rech Scient Preparing deutrated potassium dihydrogen phosphate crystal, comprises producing crystalline solution with part of supersaturated solution of the compound, and continuous circulating solution between crystallization and saturation chambers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562325A (en) * 1947-01-30 1951-07-31 Bendix Aviat Corp Apparatus for producing artificial crystals
DE102006029830A1 (en) * 2006-06-27 2008-01-03 Schmidt-Köksal, Michael Growing of deuterated alanine doped triglycine sulfate monocrystals from a solution for night vision device, comprises arranging a crystal holder in a chamber of a device and pumping the solution in a circulation with the chamber
DE102006029830B4 (en) * 2006-06-27 2011-02-24 Schmidt-Köksal, Michael Process and device for producing pyroelectric single crystals
FR2909687A1 (en) * 2006-12-06 2008-06-13 Centre Nat Rech Scient Preparing deutrated potassium dihydrogen phosphate crystal, comprises producing crystalline solution with part of supersaturated solution of the compound, and continuous circulating solution between crystallization and saturation chambers
WO2008081103A3 (en) * 2006-12-06 2008-09-12 Centre Nat Rech Scient Crystal growth in a solution in stationary conditions
US8771379B2 (en) 2006-12-06 2014-07-08 Centre National De La Recherche Scientifique (C.N.R.S.) Crystal growth in solution under static conditions

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