| 铝电解槽废旧阴极炭块的结构和组成 |
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| 引用本文： | 翟秀静,邱竹贤. 铝电解槽废旧阴极炭块的结构和组成[J]. 东北大学学报(自然科学版), 1992, 0(5) |
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| 作者姓名： | 翟秀静 邱竹贤 |
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| 作者单位： | 东北工学院有色金属冶金系(翟秀静)，东北工学院有色金属冶金系(邱竹贤) |
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| 摘 要： | 通过X光衍射、显微结构、红外光谱等测试方法,对铝电解槽废旧阴极炭块的物质组成和结构进行了分析。X光衍射结果表明,废旧阴极炭块中浸入的电解质主要为氟化钠、冰晶石等氟盐和氧化铝,其中的炭具有较高的石墨化程度。通过偏光和透光显微镜分析发现,电解质主要在炭块的裂缝和孔洞中结晶析出,与炭有清晰的界面。通过破碎可以实现解离,为其综合利用提供了依据。
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| 关 键 词： | 铝电解槽 阴极炭块 冰晶石回收 炭块石墨化 |
Composition and Structure of Spent Potlinings of Aluminum Electrolysis Cell |
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| Zhai Xiujing,Qiu Zhuxian. Composition and Structure of Spent Potlinings of Aluminum Electrolysis Cell[J]. Journal of Northeastern University(Natural Science), 1992, 0(5) |
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| Authors: | Zhai Xiujing Qiu Zhuxian |
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| Affiliation: | Zhai Xiujing;Qiu Zhuxian |
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| Abstract: | To recover the solid electrolyte and carbon, the composition andstructure of spent potlinings were investigated by means of such microtechni-ques as X-ray diffracion, IR-spectrum and polarizing microscopy. The resultsreveal that the spent potlinigs are mainly composed of NaF, Na_3AlF_6, Al_2O_3,Al_4C_3, NaC_(64) and Na_4Fe(CN)_6, among which the carbon in spent cathode blockwas found highly graphitized. Microscopic analyses indicate that the electro-lytes are segregated in the fissures/voids with clear interface from carbon. Thespent potlinings were proved separable/decomposable by way of crushing, thusenabling to put into comprehensive utilization. |
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| Keywords: | spent potlining aluminum electrolysis cell cryolite recovery carbon |
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