Apparatus for recovery of heavy metals from highly concentrated

Details Apparatus for recovery of heavy metals from highly concentrated Apparatus for recovery of heavy metals from highly concentrated

1990-09-26

1992-03-03

Cintins, Ivars

Metallurgical apparatus

Means for treating ores or for extracting metals

By means precipitating metal from solution

75724, 75725, 75726, 210342, 2101951, 210197, 210202, 210203, C22B 1104

Patent

active

050925636

ABSTRACT:
A reactor for recovering metals such as copper, tin and lead from concentrated, acidic aqueous solutions includes a reaction vessel retaining a bed of scrap aluminum in a packed bed above the bottom of the vessel; a plenum below the packed bed of scrap aluminum, and a filter situated within the plenum, including a first perforated pipe enclosing a coaxial second perforated pipe, through which liquid can be filtered and withdrawn for recirculation into the reactor above the packed bed of scrap aluminum. Metal recovery is effected by reduction of metal ions in solution and precipitation onto the scrap aluminum. Multiple reactor systems including equipment required for pH adjustment of the wastewater also may be used.

REFERENCES:
patent: 883608 (1908-03-01), Antoine
patent: 1281443 (1918-10-01), Walker
patent: 1429131 (1922-09-01), Field
patent: 3511488 (1970-05-01), Stubblefield
patent: 4082546 (1978-04-01), Wallace

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