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New Metallurgical Processes

     

For easily treatable ores, the Carbon-in-Pulp (CIP) and Carbon-in-Leach (CIL) processes are now widely adopted. As mentioned above, these two new process flows represent important research achievements and progress in the chemical metallurgy industry. According to incomplete statistics, roughly 50% of the world's gold is currently produced via these processes, which fully demonstrates their high production efficiency and wide industrial adoption.

These processes are applicable to a broad range of feed materials, thus providing great flexibility for process selection. Coupled with their impressive metal recovery rates and low investment costs, it comes as no surprise that they rank among the most widely used metallurgical processes worldwide.

Overall, the CIP process has a significant economic advantage over the traditional cyanidation process. Its core differentiating advantage lies in its gold recovery mechanism: the zinc displacement process (a conventional downstream step of traditional cyanidation) recovers gold through reduction, where gold ions are reduced and deposited onto zinc powder. This process requires clear filtrate as a prerequisite, otherwise high-purity gold cannot be extracted at all.

The CIP process, by contrast, extracts gold directly from ore pulp, so the straightforward and convenient solid-liquid separation method can be applied directly. This approach not only simplifies operation, but also considerably cuts equipment and labor costs.

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