这种分散液用于造纸施胶，比马来松香皂化胶节省松香和硫酸铝各30 ~ 40%，是一种很有发展前途的新型胶料。
It can be used as a size and has good sizing effect, it can save 30 ~ 40% rosin and than conventional modified rosin size.
介绍了用伯胺直接从铝土矿的硫酸浸取液中萃取分离铁生产无铁硫酸铝的工艺研究内容和结果，并介绍了工艺技术经济状况。
The technology and test results for the preparation of non-iron aluminium sulfate by primary amine extraction method are introduced. The technical and economical status of the process are also stated.
结果表明，在相同的净水条件下，生化工艺系统处理污染原水比传统净水工艺节约混凝剂硫酸铝50%以上，节约液氯75%？
The experiment results show that the biochemical process can save coagulants of above 50%and liquid chlorine of about 75%?80%under the same conditions of water treatment.
结果表明，在相同的净水条件下，生化工艺系统处理污染原水比传统净水工艺节约混凝剂硫酸铝50%以上，节约液氯75%？
The experiment results show that the biochemical process can save coagulants of above 50%and liquid chlorine of about 75%?80%under the same conditions of water treatment.
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