试验采用了煅烧、二次酸浸工艺，进行硫铁尾矿酸浸除铁和铝试验。
The calcination and secondary acid leaching process were used to remove iron and aluminum in the pyrite tailings in the tests.
通过提取钼尾矿中含量较高的铁、钙、镁，可以实现主元素钼以及含量较少的铜、钨等金属元素的富集，为后续的提取节约除杂成本。
After the aid leaching mentioned above, other valuable elements, such as Mo, Cu and W, were naturally enriched. It would save the cost in the later extracting process.
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