8 Stage 30m³ AAC Pumpcell

6 Stage 70m³ AAC Pumpcell

8 stage 125m³ AAC Pumpcell

Use of the early generation carbon adsorption circuits showed that the process of interstage screening of activated carbon and pulp could be improved upon. Kemix supplied the North Kalgoorlie Mines (NKM) interstage screens under licence to Anglo American Corporation (AAC). This represented a significant improvement in the screening process and was later further developed in partnership with AAC into the Mineral Processing Separating (MPS) screen.

The pumping version of the MPS screen, the MPS(P) was developed to allow the adsorption tanks to be positioned on the same elevation.

The MPS(P) interstage screen is an integral component in the design of the AAC Pumpcell.

This self-contained carbon adsorption circuit uses a carousel mode of operation. This eliminates the need for the interstage transfer of carbon by rotating the feed and discharge points on the circuit, simulating carbon movement. The AAC Pumpcell offers significant operating cost advantages over both Carbon-in-Leach (CIL) and conventional counter current Carbon-in-Pulp (CIP) circuits. The AAC Pumpcell is suitable for ion exchange Resin-in-Pulp (RIP) applications to recover various base metals.

AAC Pumpcell Plant

This self-contained carousel carbon adsorption plant enhances carbon management. The AAC Pumpcell Plant has a residence time of approximately fifteen minutes per stage, making it considerably smaller than conventional CIP circuits. The AAC Pumpcell Plant operates at carbon concentrations of 30 to 80g of carbon per litre of pulp.

A carousel circuit differs from a cascade circuit by rotating the feed and discharge points of each tank to simulate the counter current movement of carbon against the pulp flow. Carbon management is simplified as each cell contains a discrete batch of carbon. In the cascade circuit the carbon is pumped against the pulp flow on a continuous basis.