GB1421219A - Process for the formation of phosphate glass - Google Patents

Process for the formation of phosphate glass

Info

Publication number
GB1421219A
GB1421219A GB4337573A GB4337573A GB1421219A GB 1421219 A GB1421219 A GB 1421219A GB 4337573 A GB4337573 A GB 4337573A GB 4337573 A GB4337573 A GB 4337573A GB 1421219 A GB1421219 A GB 1421219A
Authority
GB
United Kingdom
Prior art keywords
solution
pipe
vessel
temperature
zone
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
GB4337573A
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.)
Gelsenberg AG
Original Assignee
Gelsenberg AG
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 Gelsenberg AG filed Critical Gelsenberg AG
Publication of GB1421219A publication Critical patent/GB1421219A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/005—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture of glass-forming waste materials
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/033—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by using resistance heaters above or in the glass bath, i.e. by indirect resistance heating
    • C03B5/0336—Shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/06—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in pot furnaces
    • C03B5/08—Glass-melting pots
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/28—Siphons
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/002—Use of waste materials, e.g. slags
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/16—Silica-free oxide glass compositions containing phosphorus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
    • H01J23/42—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit the interaction circuit being a helix or a helix-derived slow-wave structure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Solid Wastes (AREA)
  • Glass Compositions (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

1421219 Phosphate glass using radio-active waste materials GELSENBERG AG 14 Sept 1973 [14 Sept 1972] 43375/73 Heading C1M A process for the formation of a phosphate glass from a solution of radio-active waste materials comprises introducing the solution, to which phosphate ions and, if necessary, alkali metal ions have been added to adjust the weight ratio of the metal oxide content of the solution to the phosphorus pentoxide content of the solution to that suitable for the formation of phosphate glass, into a zone-heated vessel in a manner such that evaporation of liquid from the solution or slurry, and calcination and melting of the resulting solid material take place exclusively at the wall or the walls of the vessel. If the solution contains nitrates it is preferred to denitrate before use and the solution or slurry may be concentrated before introduction into the vessel, the concentrated material having a solids content of 40-70% by weight. In the specific embodiment (Figure) the solution or slurry is supplied via a feed pipe 2 located at the wall of a cylindrical upright vessel or pipe 1. The feed pipe 2 has an obliquely terminated lower end so that the incoming solution or slurry is guided to the wall of the vessel 1. A thermocouple element guide pipe 3 is arranged coaxially of the pipe 1. The pipe 1 is located in an oven by means of which the lower part (melting zone) has a temperature of 800-1000‹ C., the middle zone (calcination zone) a temperature of 700‹ C., and the upper end (evaporation zone) a temperature of 100‹ C. The upper end of the pipe may originally have a temperature of 200‹ C. which is then lowered to 100‹ C. by the introduction of water via the feed pipe. The monitoring and control of the temperature is effected by thermocouple elements mounted in the guide pipe 3. In a specific embodiment a denitrated waste solution of the following composition is introduced:-F 5À09 g./l., Al 18.35 g./l., fission products 204 g./l., H 3 PO 4 779À6 g,/l. and Na 2 O 65 g./l. The glass melt is discharged from the lower end of the pipe 1 through a discharge pipe 5. Waste vapours produced escape through the waste gas pipe 4.
GB4337573A 1972-09-14 1973-09-14 Process for the formation of phosphate glass Expired GB1421219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722245149 DE2245149C3 (en) 1972-09-14 1972-09-14 Process for forming phosphate glass

Publications (1)

Publication Number Publication Date
GB1421219A true GB1421219A (en) 1976-01-14

Family

ID=5856360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4337573A Expired GB1421219A (en) 1972-09-14 1973-09-14 Process for the formation of phosphate glass

Country Status (6)

Country Link
BE (1) BE804640A (en)
DE (1) DE2245149C3 (en)
FR (1) FR2200212B1 (en)
GB (1) GB1421219A (en)
IT (1) IT1008035B (en)
NL (2) NL176659C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043397A1 (en) * 1980-05-05 1982-01-13 Richard C. Ropp A nuclear-waste block for the storage of high level radioactive waste and a process of encapsulating high level radioactive waste

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2453404C2 (en) * 1974-11-11 1985-04-04 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover Method and device for solidifying radioactive waste
LU73279A1 (en) * 1975-08-29 1977-04-20
DE2657265C2 (en) * 1976-12-17 1984-09-20 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for the solidification of radioactive waste liquids from the reprocessing of nuclear fuel and / or breeding material in a matrix made of borosilicate glass
DE3238962C2 (en) * 1982-10-21 1985-01-17 Nukem Gmbh, 6450 Hanau Process for the solidification of aqueous radioactive waste solutions containing alkali nitrate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE636051A (en) *
US1963910A (en) * 1930-08-05 1934-06-19 Ferro Enamel Corp Method of making vitreous materials
DE2125915C3 (en) * 1970-05-26 1980-06-12 Comitato Nazionale Per L'energia Nucleare - Cnen, Rom Process for the denitration and solidification of nitric acid nuclear fission products with the formation of a phosphate glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043397A1 (en) * 1980-05-05 1982-01-13 Richard C. Ropp A nuclear-waste block for the storage of high level radioactive waste and a process of encapsulating high level radioactive waste

Also Published As

Publication number Publication date
DE2245149C3 (en) 1981-04-09
IT1008035B (en) 1976-11-10
NL7312602A (en) 1974-03-18
FR2200212B1 (en) 1978-02-17
NL176659C (en) 1985-05-17
BE804640A (en) 1974-01-02
DE2245149B2 (en) 1980-08-14
NL176659B (en)
FR2200212A1 (en) 1974-04-19
DE2245149A1 (en) 1974-03-28

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee