As a new method of nickel extractive metallurgy, the process of chlorine leaching purification electrolysis for nickel sulphide concentrate usually USES solvent extraction as its purification.
硫化镍精矿氯气浸出—净化—电积工艺作为镍提取冶金的新方向，其净化过程大多采用溶剂萃取方法。
Methods: To establish the quality control methods and optimize the extractive processes by orthogonal design L9 (34) and correct solvent.
方法：通过溶剂选择和正交设计L9（34），筛选合理的提取工艺，并制定质量控制方法。
The new process consists of extractive distillation section, degassing section, distillation section and solvent recovery section.
新工艺包括萃取蒸馏区、脱气区、蒸馏区和溶剂回收区。
Furthermore, the oxidant is converted into an extractive solvent for removing oxidized sulfur and nitrogen compounds from the oxidized petroleum oils after oxidation step.
氧化后的氧化剂转化为萃取溶剂，以移出硫氧化物和氮氧化物，因此，没有废酸形成的困扰。
Methods The extraction process was investigated by solvent extraction and ethanol precipitation, with extractive yield and chlorogenic acid as the indexes.
方法以绿原酸含量和提取物得率为考察指标，通过对水提和水提醇沉两种方法进行比较。
Tetrachloro-methane is also a common good chemical organic solvent; and often used as the extractive agent in chemical experiments.
四氯甲烷也是一种较常见的化工原料，是一种良好的有机溶剂，在化学实验中常被作为萃取剂等。
Biocompatibility of eight organic solvents for Lactobacillus delbruckii was investigated and the mixture of oleyl alcohol and trioctylamine was selected as the solvent of extractive cultivation.
以德氏乳酸杆菌为研究对象，考察了八种有机溶剂分别加入培养基对细菌生长及产酸的影响。
The present invention is the medicinal use of common valeriana extractive with methanol or other organic solvent.
本发明是北缬草有机溶剂提取物的医药用途，其特征是具有镇静安眠作用。
The extractive is diluted by the alkane-cycloparaffin solvent with weight ratio 1: (0.1-0.5).
所述提取物用链烷-环烷溶剂 以溶剂对提取物为（0.1～0.5）∶1的重量比预先进行稀释。
Conclusion Using75 % alcohol as extractive solvent is the best procedure.
结论以75 %的乙醇提取为最佳。
Acetonitrile and iso-propanol were used as the extractive solvent.
改用乙腈加异丙醇；
Acetonitrile and iso-propanol were used as the extractive solvent.
改用乙腈加异丙醇；
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