For the manganese carbonate ore from Tongluojing Mine of Zunyi, there is little slime in the primary ore but much in the secondaryore.
遵义铜锣井碳酸锰矿石原生矿泥量不多，但次生矿泥量很大，对锰的选收有着严重的影响。
2
Retrograde metamorphism at Hongtoushan is characterized by porphyroblastic growth of pyrite, formation of ore mylonite, secondary annealing and chemical remobilization.
退变质过程以黄铁矿变斑晶生长、矿石糜棱岩的形成、二次退火和化学再活化为特征。
3
High-energy hydraulic hammer with liquid cushion is a new and highly efficient equipment used for the secondary breaking of ore boulder occurred very often in domestic and foreign mines.