| 摘要 |
<p>An electrolytic cell for aluminum has cathode made of carbon blocks, which has a heterotypic structure. Said cell comprises steel shell, refractory material installed on the bottom, anodes and cathode. The cathode carbon blocks have projections on the top surface of the carbon blocks. The cathode according to the present invention can reduce the velocity of the flow of molten aluminum, and the height of the turbulence, and thus can increase the stability of the surface of molten aluminum, reduce the lose of the aluminum, increase current efficiency, reduce the inter electrode distance, and the energy consumption of the production of aluminum by electrolysis. And the compounds or precipitates of viscous molten cryolite can be formed on the bottom between the projections on the top surface of the cathode, which can prohibit the molten aluminum to flow into the bottom through the cracks and apertures on cathodes, so the life of the electrolytic cell can be extended.</p> |
