and the orthogonal experimentation under the condition of acid leaching with oxygen pressure and baking-acid leaching was designed,meanwhile the tiptop leaching rate was validated.

• 之间,并在石煤氧压酸浸和石煤焙烧-酸浸两种条件下,设计了正交试验,且对浸出率最高的试验进行了验证。