Zinccalcine 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。
2
The progress of its application on roasting zinc concentrate, leaching zinccalcine and leaching zinc concentrate directly are summarized separately.
然后对其在湿法炼锌中的硫化锌精矿焙烧、锌焙砂浸出、硫化锌精矿直接浸出等方面应用取得进展进行综述。
3
The industrial tests show that the jarosite process can be used to handle the zinccalcine with high concentration of Sb by controlling the leaching rate of Sb in the neutral leaching process.