Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1990-09-25
1992-05-26
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
423 25, B01D 1500
Patent
active
051164159
ABSTRACT:
Hydrophilic hydrogels capable of a high degree of water imbibition are contacted with aqueous feedstocks containing metal and metal anion values to collect the water and dissolved or suspended values or materials. The term metals includes the free base and precious metals, alloys, salts (including their solvated and complex precious metal ions) and compounds, including base metal anions, and mixtures of the above which are soluble or insoluble in water. The feeds can be ores, industrial or other wastes. After contact, the hydrated hydrogel can be partially dehydrated and separated from the aqueous feedstock. The material values can be recovered by using a strong oxidant to destroy the hydrogel. The aqueous feedstock can be recycled or further purified.
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AQS, Inc.
Crandell Ralph F.
Rosenberg Peter D.
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