Preparation of Cold Ramming Paste for Aluminum Electrolysis Cell with Phenol-Formaldehyde Resin as Binder
TIAN Lin， ZHOU Yang-min XIE Gang HOU Yan-qing FANG Ning YANG Ni
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology The Technique Center of Yunnan Metallurgy Co., Ltd. The Technique Center of Yunnan Metallurgy Co., Ltd. The Technique Center of Yunnan Metallurgy Co., Ltd. The Technique Center of Yunnan Metallurgy Co., Ltd.
Abstract： Cold ramming paste with the ramming temperature range of (20±5)℃ for aluminum electrolysis cell was prepared with phenol-formaldehyde (PF) resin as binder, electro-calcined anthracite and graphite as aggregate, which has good properties such as low electrical resistivity of 58.25 mW×m and high compressive strength (28.05 MPa). It is much better than that of some domestic factories, but a little better than foreign products through property tests. And the analytical results by IR and TG-DSC for the change of functional groups of PF resin at different carbonization temperatures, of mass and heat when heated show that the higher the carbonization temperature is and then the resin functional groups disappear more completely, finally PF resin can be condensed into higher degree of polymerization of aromatic ring. TG-DSC profile of cold ramming paste is very complex and can be divided into four stages.
2011, Vol. 11 
