Removal of oil from ferrous grinding swarf of automobile industry by aqueous washing process
Removal of oil from ferrous grinding swarf of automobile industry by aqueous washing process
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DOI：
10.1016/j.wasman.2020.05.020
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发表时间：
2020-06-15
期刊：
影响因子：
8.1
通讯作者：
Mishra, Brajendra
中科院分区：
文献类型：
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作者：
Lee, Hyunju;Jung, Myungwon;Mishra, Brajendra
研究了从含铁磨屑中回收有价物质的方法。我们收到了汽车工业的样品。样品由约20重量%的水分和80重量%的残留物（油和固体）组成。烘箱干燥的样品的化学组成为约87重量%的铁。本文采用两种不同的商品化试剂Micro-90和洗涤剂8对铁磨屑进行水洗除油研究。将三种不同量的固体（2g、3g和4g）与20 mL稀释的试剂混合用于水洗涤。在Micro-90溶液中，在三次洗涤循环后，约80%的油被去除，固体含量小于3g/20 mL。另一方面，当使用洗涤剂8时，在小于3g/20 mL的固体含量下，在三次洗涤循环后100%的油被去除。纸浆密度是决定除油效率的重要因素。对于放大实验，考察了不同的洗涤方法，如超声处理和顶置式搅拌器。还对洗涤剂8溶液进行了初步重复使用试验，以确定水洗工艺的可行性。
This research focused on the recovery of valuable materials from ferrous grinding swarf. We received the sample from the automobile industry. The sample has consisted of approximately 20 wt% moisture and 80 wt% residue (oil and soild). The chemical composition of the oven-dried sample was approximately 87 wt% iron. In this study, aqueous washing process for oil removal from ferrous grinding swarf was investigated with two different commercial reagents, Micro-90 and Detergent 8. Three different amounts of solids (2, 3, and 4 g) were mixed with 20 mL of diluted reagents for the aqueous washing. In the Micro-90 solution, about 80% of the oil was removed after three washing cycles at a solids content less than 3 g/20 mL. On the other hand, when using Detergent 8, 100% oil was removed after three washing cycles at a solids content of less than 3 g/20 mL. Pulp density was an important factor in determining oil removal efficiency. For the scale-up experiment, different washing methods such as ultrasonication and overhead stirrer were examined. The preliminary reuse test of the Detergent 8 solution was also conducted for the feasibility of the aqueous washing process.