科研之友
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摘要
A cold ramming paste for aluminum electrolysis cells was synthesized with electro-calcined anthracite and artificial graphite as aggregate and phenol-formaldehyde resin as binder. The synthesized pastes were characterized by thermogravimetry, infrared spectroscopy, scanning electron microscopy-energy dispersive spectroscopy, and gas chromatography-mass spectrum. The results show that the synthesized cold ramming paste is an ecofriendly material and it has some superior physical properties, such as low electrical resistivity, high compressive strength, appropriate sodium penetration, and thermal expansion, all of which can meet industry requirements. The mass loss (3.4%) and linear shrinkage reach the maximum during the third stage (from 360 to 600 degrees C) based on thermal analysis, so a lower heating rate should be used in this stage. Moreover, the resin functional groups disappear more completely at higher carbonization temperature.
- 出版日期2013-1-30
- 单位昆明冶金研究院; 昆明理工大学
