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Title: Process for removing thorium and recovering vanadium from titanium chlorinator waste

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.
Inventors:
 [1];  [2]
  1. (Albany, OR)
  2. (Corvallis, OR)
Issue Date:
OSTI Identifier:
870314
Assignee:
United States of America as represented by Secretary of (Washington, DC) NETL
Patent Number(s):
US 5494648
Research Org:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
Country of Publication:
United States
Language:
English
Subject:
process; removing; thorium; recovering; vanadium; titanium; chlorinator; waste; removal; comprising; leaching; anhydrous; water; dilute; hydrochloric; acid; solution; filtering; separate; insoluble; minerals; coke; fractions; soluble; metal; chlorides; beneficiating; step; shaking; tables; recover; recyclable; otherwise; useful; treating; filtrate; reagents; precipitate; remove; filtration; metals; zr; nb; addition; base; precipitant; boiling; slurry; reaction; products; iron; vanadate; product; oxidizing; agent; remaining; cations; na; waste comprising; hydrous titanium; metal chlorides; hydrochloric acid; metal chloride; acid solution; reaction product; reaction products; oxidizing agent; soluble metal; titanium chlorinator; chlorinator waste; oxidizing agen; /423/

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