Process for separation of molybdenum from tungsten leachates
Creators
Description
A method for the removal of molybdenum from solutions containing molybdenum and other mineral values such as tungsten is accomplished by mixing the leachate solution with hydrogen peroxide to form a feed solution; the feed solution is contacted with a porous membrane, the opposite side of which is continuously contacted with an organic solution containing tributylphosphate. Additionally, for recovery of molybdenum, the tributylphosphate solution is additionally contacted with a second membrane the opposite side of which is contacted with a stripping solution such as a solution of sodium hydroxide or sodium carbonate. In a continuous ion exchange embodiment, the organic solution containing tributylphosphate is recirculated to contact the second side of the first membrane, preferably after passage through an aqueous separator
Availability note (English)
U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50.Additional details
Publishing Information
- Imprint Pagination
- v p.
- IPC:
- Int. Cl. C01G 39/00.
- IPC
- Int. Cl. C01G 39/00.
- Patent number
- US patent document 4,443,414/A/
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 16029616
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- EXTRACTION APPARATUSES; HYDROGEN PEROXIDE; ION EXCHANGE; LEACHATES; MEMBRANES; MOLYBDENUM; PHOSPHATES; SODIUM COMPOUNDS; SOLVENT EXTRACTION; TUNGSTEN
- Descriptors DEC
- ALKALI METAL COMPOUNDS; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; METALS; MIXTURES; OXYGEN COMPOUNDS; PEROXIDES; PHOSPHORUS COMPOUNDS; SEPARATION PROCESSES; SOLUTIONS; TRANSITION ELEMENTS
Optional Information
- Notes
- PAT-APPL-407964.