CATHODE UNIT OF ELECTROLYZER FOR PRODUCTION OF ALUMINUM Russian patent published in 2000 - IPC

FIELD: aluminum production. SUBSTANCE: cathode unit has metal enclosure coming in the form of box with longitudinal and lateral walls and bottom. Bottom and walls are lined with refractory and heat-insulation layers. Lateral walls have additional layer of insulation in the form of artificial skull made of cold-packed hearth stock put between heat-insulation plates of lateral walls and bottom. Heat-conducting layer made of graphitized plates is located between refractory and heat-insulation layers of bottom. EFFECT: prolonged service life of electrolyzer thanks to prevention of breakdown of lining and re-distribution of thermal flows. 2 cl