Objective: to study the extraction and purification process of total anthraquinone in Rheum.
目的：改进大黄总游离蒽醌提取与纯化工艺。
Objective: to study the extraction and purification process of tannins from casuarina in order to provided theory basis for further application.
目的：研究木麻黄鞣质的提取工艺，为其开发应用提供理论依据。
The process of lycopene extraction could be divided into extracting stage and purification stage.
番茄红素的提取过程可分为提取阶段和纯化阶段。
This paper summarizes the process features of purification arsenic removal of copper electrolyte by solvent extraction or continuous electrowinning and makes analysis and comparison.
总结了萃取法和连续电积法两种铜电解液净化脱砷新工艺的特点，并进行了分析比较。
The application of technology for gold purification by extraction is introduced with gold Refinery of Hetai gold Mine. The process flow and technology number is studied.
介绍了萃取法精炼黄金技术在河台金矿黄金精炼厂的应用情况，并对其工艺流程和技术参数进行探讨。
The process is simple and convenient. The yield and purity is good and the regeneration of resin is easy. So this method of extraction and purification is advisable.
该方法工艺简便、产品收率与纯度高，树脂再生容易，是目前提取甘草酸和甘草次酸较为理想的方法。
Objective To optimize the process of extraction and purification for Centella asiatica(L.
目的研究积雪草的提取纯化工艺。
Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.
为对湿法磷酸进行净化脱氟 ，用胺类溶剂作萃取剂 ，煤油作稀释剂 ，对湿法磷酸进行了溶剂萃取脱氟的工艺研究。
Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.
为对湿法磷酸进行净化脱氟 ，用胺类溶剂作萃取剂 ，煤油作稀释剂 ，对湿法磷酸进行了溶剂萃取脱氟的工艺研究。
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