Method for lining a cathode of a reduction cell for production of primary aluminum

A method for lining a cathode of a reduction cell for production of aluminum, the method comprising:

• filling a bottom of a cathode device shell with a layer of fine carbonized particles;
• filling and leveling a thermal insulation layer on the layer of fine carbonized particles;
• filling, leveling and compacting a refractory layer;
• and
• installing bottom and side blocks followed by sealing joints therebetween with a cold ramming paste, wherein the fine carbonized particles are compacted to a height of 5-25% of the total height between the cathode device shell and the cathode, wherein the layer of fine carbonized particles has a density of 250 to 600 kg/m3.

A method for lining a cathode of a reduction cell for production of aluminum, the method comprising:

• filling a bottom of a cathode device shell with a layer of fine carbonized particles, wherein the fine carbonized particles consist of carbonized woodflour, carbonized hardwood sawdust, or carbonized softwood sawdust;
• filling and leveling a thermal insulation layer on the layer of fine carbonized particles;
• filling, leveling and compacting a refractory layer;
• and
• installing bottom and side blocks followed by sealing joints therebetween with a cold ramming paste.