Chemistry of inorganic compounds – Extracting – leaching – or dissolving
Patent
1976-06-24
1978-01-31
Vertiz, O. R.
Chemistry of inorganic compounds
Extracting, leaching, or dissolving
423 41, 23270R, B01J 812
Patent
active
040716112
ABSTRACT:
A method and apparatus are described for continuously leaching ore, including the continuous addition of crushed ore to the top of a cylindrical columnar container. The ore passes downwardly through the container and is removed from the bottom of the container through a centrally disposed conduit by airlifting. A plurality of grids are spaced along the column and deflect, accelerate and turbulate the ore as it passes each of the grids. A washing liquid such as water is fed to the bottom of the column to displace leaching solutions from the ore prior to its removal from the column. Leaching reagents are continuously added through channels provided in the grids while the pregnant solution formed by the reaction of the leaching solutions to the ore is monitored through sampling intakes mounted on the grids. A deflection cone is positioned near the bottom of the column to cause the descent of the crushed ore in the column to be uniform across the width of the column.
REFERENCES:
patent: 1509686 (1924-09-01), Morterud
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patent: 3529933 (1970-09-01), Honchar
patent: 3777003 (1974-12-01), Mitterer
patent: 3883310 (1975-05-01), Killgore
patent: 3885017 (1975-05-01), Robinson et al.
patent: 3958947 (1976-05-01), Robinson et al.
Boldt et al., The Winning of Nickel, Longmans Canada, Ltd., Toronto, (1967), pp. 294-296.
Hearn Brian E.
Vertiz O. R.
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