在经过工业试验和工业验证试验后，对两座炼铅厂采用该工艺进行了设计，且现已建成投产。

After the industrial and validation tests, the process has been adopted in two smelting plants and now in full operation.

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本文介绍了利用氨法处理杂质成分复杂的某大型冶炼厂炼铅系统烟化炉氧化锌烟灰制备高等级氧化锌的工艺。

The paper introduces the ammonia process of producing high-grade zinc oxide from impurities zinc oxide dust which produced by the smoked stoves in a large internal smelter.

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