Cathode Block Use In The Aluminum Industry

by | Jan 22, 2021 | Business

One of the building and construction industry changes is the turn towards “greener” products in all types of construction, including in the residential and construction industry. Aluminum, which is recyclable and offers a higher strength to weight ratio than traditional building materials, moves to the forefront for these green projects.

Other industries are also moving to more durable, longer life-cycle products, with the result of an increase in the demand for all types of aluminum alloys. The increase in demand results in increased production around the world, including the need for more aluminum smelters.

The Basics

The cathode block is an essential part of the aluminum smelting system. These blocks are used to line the aluminum electrolytic cells and tanks. They are designed to provide an extended life for the electrolytic cell and offer high heat resistance, high strength levels, and low heat expansion during the process. A high quality cathode block offers natural resistance to the damage caused by molten salts and by aluminum.

There are different cathode block options, including amorphous, graphitized, and graphitic. The various specifics of the process determine which of the block times is the best for the given application.

Ideally, the choice of the best quality of cathode blocks in a system also reduces the need for power in the process by reducing the cathode voltage.

This is determined by the manufacturing process used for the block, with the amount of graphite and binder or petroleum coke used in the mixture having a direct impact on the cathode voltage through the cell.

M. Brashem, Inc. offers a top inventory of cathode block options for all types of aluminum smelting and processing needs. For details, go to

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