| 摘要 |
<p>Disclosed is a system, comprising: a first set of tanks configured to flow co-currently an ion exchange resin, thiosulfate, and a gold and/or silver-containing material, the first set of tanks comprising a first input for a first inputted ion exchange resin and a first output for a first gold and/or silver-loaded resin; and a second set of tanks configured to receive the thiosulfate and gold and/or silver-containing material from the first set of tanks and to flow counter-currently a second inputted ion exchange resin on the one hand and the thiosulfate and gold and/or silver-containing material on the other, the second set of tanks comprising a second input for the second inputted ion exchange resin and a second output for a second gold and/or silver-loaded resin.</p> |
