CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS

Miller, P. D.; Peterson, C. L.; Stewart, O. M.; Stephan, E. F.; Fink, F. W.

doi:10.2172/4246070

Title: CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS

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Abstract

Fuel elements clad with Zr or containing Zr as a diluent can be recovered by a fluoride-volatility process. The first step consists of hydrofluorination of the elements in a bath of molten fluoride salts using an HF sparge. In this case the two salt systems considered were NaF-ZrF/sub 4/ and NaF- LiF. Materials evaluated at Battelle for possible use in the construction of this hydrofluorinator include Inconel, A'' Nickel, copper, silver, Monel, Hastelloy B, Hastelloy W, INOR-1, and INOR-8. The metals were exposed to molten fluoride salts through which HF was bubbled continuously. The data indicate that the NaF-LiF systems are much more corrosive than the NaF-ZrF/sub 4/ system. The systems are most corrosive when the alkali fluoride component is high. An elevation in temperature increases the corrosion significantly as does an increase in the HF flow rate. Hydrogen in the HF flow stream retards the corrosion of the sodiumzirconium salts significantly, but appears to have less effect on the sodium -lithium systems. The areas at the interface of the liquid and vapor phases were most seriously damaged under the exposure conditions usually used. However, appreciable reduction in attack was experienced when zirconium was actually hydrofluorinated. INOR-8 was the mostmore »« less

Authors:: Miller, P. D.; Peterson, C. L.; Stewart, O. M.; Stephan, E. F.; Fink, F. W.

Publication Date:: Mon Jun 01 00:00:00 EDT 1959

Research Org.:: Battelle Memorial Inst., Columbus, OH (United States)

OSTI Identifier:: 4246070

Report Number(s):: BMI-1348

NSA Number:: NSA-13-016087

DOE Contract Number:: W-7405-ENG-92

Resource Type:: Technical Report

Resource Relation:: Other Information: Orig. Receipt Date: 31-DEC-59

Country of Publication:: United States

Language:: English

Subject:: CHEMISTRY; ALKALI METALS; ALUMINUM ALLOYS; CHROMIUM ALLOYS; COMPOUNDS; COPPER ALLOYS; CORROSION; FABRICATION; FLUID FLOW; FLUORIDES; FLUORINATION; FUEL ELEMENTS; FUSED SALTS; HASTELLOY; HYDROFLUORIC ACID; HYDROGEN; INCONEL ALLOYS; INOR-8; LABORATORY EQUIPMENT; LIQUIDS; LITHIUM FLUORIDES; MOLYBDENUM ALLOYS; MONEL; NICKEL ALLOYS; NIOBIUM ALLOYS; PHASE DIAGRAMS; SILVER; SODIUM FLUORIDES; SURFACES; TEMPERATURE; TITANIUM ALLOYS; VAPORS; VOLATILITY; ZIRCONIUM; ZIRCONIUM FLUORIDES

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                    Miller, P. D., Peterson, C. L., Stewart, O. M., Stephan, E. F., and Fink, F. W. CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS.  United States: N. p., 1959. 
        Web.  doi:10.2172/4246070.

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                    Miller, P. D., Peterson, C. L., Stewart, O. M., Stephan, E. F., & Fink, F. W. CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS.  United States.  https://doi.org/10.2172/4246070

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                    Miller, P. D., Peterson, C. L., Stewart, O. M., Stephan, E. F., and Fink, F. W. 1959.  
        "CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS".  United States.  https://doi.org/10.2172/4246070.  https://www.osti.gov/servlets/purl/4246070.

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@article{osti_4246070,

  title        = {CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS},

  author       = {Miller, P. D. and Peterson, C. L. and Stewart, O. M. and Stephan, E. F. and Fink, F. W.},

  abstractNote = {Fuel elements clad with Zr or containing Zr as a diluent can be recovered by a fluoride-volatility process. The first step consists of hydrofluorination of the elements in a bath of molten fluoride salts using an HF sparge. In this case the two salt systems considered were NaF-ZrF/sub 4/ and NaF- LiF. Materials evaluated at Battelle for possible use in the construction of this hydrofluorinator include Inconel, A'' Nickel, copper, silver, Monel, Hastelloy B, Hastelloy W, INOR-1, and INOR-8. The metals were exposed to molten fluoride salts through which HF was bubbled continuously. The data indicate that the NaF-LiF systems are much more corrosive than the NaF-ZrF/sub 4/ system. The systems are most corrosive when the alkali fluoride component is high. An elevation in temperature increases the corrosion significantly as does an increase in the HF flow rate. Hydrogen in the HF flow stream retards the corrosion of the sodiumzirconium salts significantly, but appears to have less effect on the sodium -lithium systems. The areas at the interface of the liquid and vapor phases were most seriously damaged under the exposure conditions usually used. However, appreciable reduction in attack was experienced when zirconium was actually hydrofluorinated. INOR-8 was the most promising of the materials evaluated. (auth)},

  doi          = {10.2172/4246070},

  url          = {https://www.osti.gov/biblio/4246070},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Jun 01 00:00:00 EDT 1959},

  month        = {Mon Jun 01 00:00:00 EDT 1959}

}

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