除杂是指有效除去原物质中所含杂质且不与主要成分反应，且不会引进新的杂质成分的过程，比如：除去碳酸氢钠中的碳酸钠。
《饮料工业》杂志|模拟移动床技术及其在食品工业中的应用 关键词： 模拟移动床；分离；除杂；应用；食品工业 [gap=434]Key words: simulated moving bed；separation；purification；application；food industry
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Na 关键字: 钨酸钠;结晶;除杂[gap=1605]Key words: sodium tungstate; crystallization; removing impurities
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Then we have explored the best conditions of the purification, extration and concentration methods by single-factor experiment.
通过单因素试验，得出最佳除杂、浓缩干燥条件。
参考来源 - 复方青银片工艺及质量标准研究According to the analysis result of impurities, two practicable methods were proposed to refine benzoic acid product from liquid-phase oxidation of toluene. One is solventing-out crystallization with acetic acid-water.
根据杂质定性分析的结果,本文提出两种苯甲酸的精制方法:一是醋酸-水体系的溶析结晶法;二是以芳香族大孔吸附剂(SD300)、活性炭为吸附剂的吸附除杂法。
参考来源 - 高纯度苯甲酸的精制To recycle resources from electroplating sludge, this paper studyed how to receive copper sulfate with some process, as acid leaching、impurity removal、extraction、crystallization and dry products and copper sulfate by the process of exploration.
为了回收电镀污泥中的金属资源以及实现污泥的无害化,本文对以含铜电镀污泥为原料、硫酸作浸出剂,经酸浸、除杂、萃取、结晶、干燥得到硫酸铜产品工艺进行了探索。
参考来源 - 从电镀污泥中回收铜的工艺研究·2,447,543篇论文数据，部分数据来源于NoteExpress
对浸取、除杂、水解、锻烧等重要步骤进行了研究。
The process of leach, refine, hydrolysis, calcination have been researched.
研究结果表明，柠檬酸的分散、除杂及螯合作用有助于金的氰化浸出。
It is found that the dispersing, impurity removal and chelating effect of citric acid help gold cyanidation.
原料乳经除杂、奶油分离、蛋白提取、脱脂后，再高温瞬时灭菌后进行发酵。
After trash extraction, cream separation and protein extraction, raw milk underwent instant sterilization under high temperature for fermentation.
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