The return fine rate of sintered ore is an important factor to influence production cost of before iron making process.

烧结矿返粉率是影响铁前区成本的重要因素之一。

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The return fine rate of sintered ore is an important factor to influence production cost of before iron making process.

烧结矿返粉率是影响铁前区成本的重要因素之一。

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