Process for removing thorium and recovering vanadium from titanium chlorinator waste

Patent · Sun Dec 31 23:00:00 EST 1995

OSTI ID:870314

Olsen, Richard S ^[1]; Banks, John T ^[2]

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1. Albany, OR
2. Corvallis, OR

A process for removal of thorium from titanium chlorinator waste comprising: (a) leaching an anhydrous titanium chlorinator waste in water or dilute hydrochloric acid solution and filtering to separate insoluble minerals and coke fractions from soluble metal chlorides; (b) beneficiating the insoluble fractions from step (a) on shaking tables to recover recyclable or otherwise useful TiO.sub.2 minerals and coke; and (c) treating filtrate from step (a) with reagents to precipitate and remove thorium by filtration along with acid metals of Ti, Zr, Nb, and Ta by the addition of the filtrate (a), a base and a precipitant to a boiling slurry of reaction products (d); treating filtrate from step (c) with reagents to precipitate and recover an iron vanadate product by the addition of the filtrate (c), a base and an oxidizing agent to a boiling slurry of reaction products; and (e) treating filtrate from step (d) to remove any remaining cations except Na by addition of Na.sub.2 CO.sub.3 and boiling.

• Research Organization: National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
• Assignee: United States of America as represented by Secretary of (Washington, DC)
• Patent Number(s): US 5494648
• OSTI ID: 870314
• Country of Publication: United States
• Language: English

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acid
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addition
agent
anhydrous
base
beneficiating
boiling
cations
chlorides
chlorinator
chlorinator waste
coke
comprising
dilute
filtering
filtrate
filtration
fractions
hydrochloric
hydrochloric acid
hydrous titanium
insoluble
iron
leaching
metal
metal chloride
metal chlorides
metals
minerals
na
nb
otherwise
oxidizing
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precipitant
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process
product
products
reaction
reaction product
reaction products
reagents
recover
recovering
recyclable
remaining
removal
remove
removing
separate
shaking
slurry
soluble
soluble metal
solution
step
tables
thorium
titanium
titanium chlorinator
treating
useful
vanadate
vanadium
waste
waste comprising
water
zr