Through experimental study of technological plan, the result shows that reclamation rate of sulphuric acid is above 90% and ammonium sulfate is above 70%.

并对技术方案进行了试验研究，试验结果硫酸回收率达到90%以上，硫酸铵回收率达到70%以上。

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Through analysis and comparative study above, the author reaches three conclusions.

通过以上三章的分析和比较研究，得出三个结论。

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The thesis applied model experiment, and finished the study contents above through orthogonal experimental design.

论文以模型试验为手段，通过正交试验设计完成上述内容的试验研究。

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Relevant Disclosures: I am a Research Associate of the NBER (through which the study above was released) and Associate Director of the NBER Retirement Research Center (through which the authors have received some funding for their study).

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