通过这种处理，在中和沉淀渣的小颗粒上形成完全的铁酸盐包复膜，在弱酸性条件下重金属离子不再浸出。
Through this kind of disposal process, heavy metal ions will no longer leach out from NPS under weak acidic conditions.
分析其原因可能是由于废渣弱碱性对弱酸性浸出具有一定的缓冲能力，导致废渣的浸出毒性较低。
It is because the waste slag in weak alkaline environment has the buffer capacity of the weak acid leaching, which thus results in lower leaching toxicity of the waste slag.
试验表明，采用超声波强化浸出可使常温弱酸下不溶的铁酸锌浸出。
The results show that, with ultrasonic on the intensification of leaching, ZnFeO4, which do not be dissolved in weak acid leaching agent in normal temperature, will be leached.
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