本文重点分析煤的气化和锅炉燃烧部分，即气热联产过程的分析。
This paper emphasis on analyzing the part of coal gasification and boiler burning, the analysis of process of gas and heat co-product.
介绍了磷石膏制硫酸联产水泥的原理、工艺过程及生产管理情况。
The principle, technological process and production management of sulphuric acid and cements production from phosphogypsum are described.
提出了硝酸分解重铬酸钾法联产铬酸酐与硝酸钾的清洁工艺，并优选出过程中主要环节的合理操作条件。
A new cleaner technology for making chromium trioxide and potassium nitrate simultaneously by using nitric acid to decompose potassium dichromate has been brought forward.
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