Zinc calcine contains a small amount of refractory zinc ferrite that can be reduced by reduction roasting.

锌焙砂含有少量难溶的铁酸锌，通过还原焙烧可以降低铁酸锌含量。

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Zinc calcine contains a small amount of refractory zinc ferrite that can be reduced by reduction roasting.

锌焙砂含有少量难溶的铁酸锌，通过还原焙烧可以降低铁酸锌含量。

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