答：先把原矿石进行多级精选，然后再进行制砂，分级，磁选，最后再进行精提纯。

Answer: the first raw ore to multistage selected, and then made sand, grade, magnetic separation, finally carried out again pure purification.

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随着中国在全球的经济产量增加，中国对澳大利亚原矿石产品的需求也增长，所以中国和澳大利亚间建立了一种非常方便和快乐的关系。

As China's global economic production grew so did demand for raw ore commodities from Australia and a very convenient and happy relationship was created.

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在选矿过程中，矿石的原矿品位、回收率、尾矿品位三者是密切相关的。

Mill grade of ore, recoveries and tailing grade are very correlative during dressing processes.

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