某铜矿通过对浮选工艺的技术改造：采取提高磨矿细度、增加二次精选及采用高效药剂等措施，使选矿技术指标得到了显著提高。
They adopted a few measures such as improving fineness of grinding ores, increasing secondary cleaning, using additional typed reagent and so on, thus making the technical indexes raised markedly.
采用玉米淀粉与磷酸二氢钠进行反应，制备用作细煤粉沉降剂的淀粉磷酸酯．通过实验，探索出最佳工艺配方及操作条件．。
The starch phosphate ester was developed for settling agent of fine coal meals. The optimum reaction conditions were researched by experiments.
结果显示：不同的酸、碱添加剂对缩短咸蛋加工时间有不同的影响，并通过采用二段式加工工艺使咸蛋品质得到很大提高。
The result showed the different acid and alkali additives had the different influence on the NaCl content of salted egg. The quality of the salted egg was improved by two phases techniques.
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