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Title: Continuous production of granular or powder Ti, Zr and Hf or their alloy products

Abstract

A continuous process for producing a granular metal selected from the group consisting of Ti, Zr or Hf under conditions that provide orderly growth of the metal free of halide inclusions comprising: a) dissolving a reducing metal selected from the group consisting of Na, Mg, Li or K in their respective halide salts to produce a reducing molten salt stream; b) preparing a second molten salt stream containing the halide salt of Ti, Zr or Hf; c) mixing and reacting the two molten streams of steps a) and b) in a continuous stirred tank reactor; d) wherein steps a) through c) are conducted at a temperature range of from about 800.degree. C. to about 1100.degree. C. so that a weight percent of equilibrium solubility of the reducing metal in its respective halide salt varies from about 1.6 weight percent at about 900.degree. C. to about 14.4 weight percent at about 1062.degree. C.; and wherein a range of concentration of the halide salt of Ti, Zn or Hf in molten halides of Na, Mg, Li or K is from about 1 to about 5 times the concentration of Na, Mg, Li or K; e) placing the reacted molten stream from stepmore » c) in a solid-liquid separator to recover an impure granular metal product by decantation, centrifugation, or filtration; and f) removing residual halide salt impurity by vacuum evaporator or inert gas sweep at temperatures from about 850.degree. C. to 1000.degree. C. or cooling the impure granular metal product to ambient temperature and water leaching off the residual metal halide salt.« less

Inventors:
 [1];  [1]
  1. (Albany, OR)
Issue Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
869001
Patent Number(s):
5259862
Assignee:
United States of America as represented by Secretary of (Washington, DC) NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
continuous; production; granular; powder; zr; hf; alloy; products; process; producing; metal; selected; consisting; conditions; provide; orderly; growth; free; halide; inclusions; comprising; dissolving; reducing; na; mg; respective; salts; produce; molten; salt; stream; preparing; containing; mixing; reacting; streams; steps; stirred; tank; reactor; conducted; temperature; range; 800; degree; 1100; weight; percent; equilibrium; solubility; varies; 900; 14; 1062; concentration; zn; halides; times; placing; reacted; step; solid-liquid; separator; recover; impure; product; decantation; centrifugation; filtration; removing; residual; impurity; vacuum; evaporator; inert; gas; sweep; temperatures; 850; 1000; cooling; ambient; water; leaching; reducing metal; temperature range; weight percent; molten salt; inert gas; metal halide; ambient temperature; stream containing; continuous process; metal selected; continuous production; halide salt; removing residual; metal product; molten halides; halide salts; granular metal; alloy product; stirred tank; molten halide; water leaching; tank reactor; /75/

Citation Formats

White, Jack C., and Oden, Laurance L. Continuous production of granular or powder Ti, Zr and Hf or their alloy products. United States: N. p., 1993. Web.
White, Jack C., & Oden, Laurance L. Continuous production of granular or powder Ti, Zr and Hf or their alloy products. United States.
White, Jack C., and Oden, Laurance L. Fri . "Continuous production of granular or powder Ti, Zr and Hf or their alloy products". United States. https://www.osti.gov/servlets/purl/869001.
@article{osti_869001,
title = {Continuous production of granular or powder Ti, Zr and Hf or their alloy products},
author = {White, Jack C. and Oden, Laurance L.},
abstractNote = {A continuous process for producing a granular metal selected from the group consisting of Ti, Zr or Hf under conditions that provide orderly growth of the metal free of halide inclusions comprising: a) dissolving a reducing metal selected from the group consisting of Na, Mg, Li or K in their respective halide salts to produce a reducing molten salt stream; b) preparing a second molten salt stream containing the halide salt of Ti, Zr or Hf; c) mixing and reacting the two molten streams of steps a) and b) in a continuous stirred tank reactor; d) wherein steps a) through c) are conducted at a temperature range of from about 800.degree. C. to about 1100.degree. C. so that a weight percent of equilibrium solubility of the reducing metal in its respective halide salt varies from about 1.6 weight percent at about 900.degree. C. to about 14.4 weight percent at about 1062.degree. C.; and wherein a range of concentration of the halide salt of Ti, Zn or Hf in molten halides of Na, Mg, Li or K is from about 1 to about 5 times the concentration of Na, Mg, Li or K; e) placing the reacted molten stream from step c) in a solid-liquid separator to recover an impure granular metal product by decantation, centrifugation, or filtration; and f) removing residual halide salt impurity by vacuum evaporator or inert gas sweep at temperatures from about 850.degree. C. to 1000.degree. C. or cooling the impure granular metal product to ambient temperature and water leaching off the residual metal halide salt.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

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