Is Bigger Always Better In Flotation?Imhoflot G Cell

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Two Case Studies of a Novel Pneumatic Flotation Technology

Samuel Snchez Pino 1 , Rainer Imhof 2, Michael Battersby 2,, Alejandro Snchez Baquedano 1

Ingeniera de Minerales SA, Pasaje Argomedo 279, Antofagasta, Chile idmidm@adsl.tie.cl

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CELDA VERTICAL

G - CELL DESIGNE

DESCRIPCION CELDA NEUMATICA GCell

TIEMPOS DE RESIDENCIA EN DOWN COMER: 2-3 sec.

TIEMPO DE RESIDENCIA EN WESEL: 30 sec.

TECNOLOGA COMPACTA DE ALTA EFICIENCIA EN FLOTACIN.

TECNOLOGA DE BAJA INVERSION

TECNOLOGA DE BAJOS COSTOS OPERACIONALES

FULL AUTOMATIZACIN INDIVIDUAL Y CIRCUITOS CON FLUJOS DE 1200 m3/h

CELDA NEUMATICA GC

APLICACIONES ALEMANIADORFNER - CAOLIN

Imhof G-Cell at Koornfontein South Africa

PLATINO FINO DE RELAVES

CARBON ORO REFRACTARIO

G-cell cleaner plant installation at Barbrook

Barbrook Gold Mine is 100% owned by Caledonia Mining Corporation

The gold mineralization at Barbrook is complex the gold is generally extremely fine grained, associated with refractory minerals such as pyrite and arsenopyrite and contains significant concentrations of preg-robbing organic carbon

The G-Cells are operated in closed circuit, with the tails from the second G-Cell reporting to the first G-Cell and the tails from the first cell reporting back to the flotation feed. Each G-Cell gives a two times upgrade; rougher concentrate at 10g/t Au is upgraded to 20g/t Au in the first G-Cell and then further to 40g/t Au in the second G-Cell. Overall mass recoveries have dropped from 30% to 20%.

G G-cell G36 Plant in Ucrania

Cloruro

Pneumatic Chile