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所进行的开发性研究评价了从里阿索·多斯·马萨多斯（RiachodosMachados）原生硫矿化中回收金的堆浸工艺。使用巴马克（Barmac）破碎机、肯尼卡（Canica）破碎机和辊压机为柱浸试验提供－2mm产品。也用常规搅拌浸出工艺进行了液瓶（Rolliugebottle）氰化提取金的试验。这些试验结果证明，选择非常规碎矿／堆浸工艺从上述里阿索小矿体中回收金潜力很大。
The developmental studies conducted evaluated the heap leaching process for gold recovery from primary sulfur mineralization in Riachodos Machados. Using a Barmac crusher, a Canica crusher and a roller press provide a -2mm product for column dip tests. A conventional liquefaction process was also used to test the cyanide extraction of gold by a roller. The results of these tests demonstrate that there is great potential for recovering gold from the above small Rio-Åaux ore body by choosing an unconventional crushing / heap leaching process.