Smelting Plant

The Carbon Plant that produces anode blocks consists of a Raw Carbon Plant, a Roasting Plant and an Anode Assembling Plant. At the Raw Carbon Plant, coke and hard pitch are mixed and formed into anode blocks and baked to a temperature of 1,250 degrees Celsius at the Anode Roasting Plant. Then in the Anode Assembling Plant, a rod is attached to the baked anode block using molten cast iron. The anode block serves as the electrode in the Reduction plant.

INALUM's Reduction Plant which has a maximum production capacity of 250 thousand tons per year from 510 smelting furnace units. This Reduction Plant houses the ironmaking process for the new era, which utilizes natural gas to reduce iron ore to produce Direct Reduced Iron (DRI). The raw materials used in this process are alumina, cryolite, and aluminum floride. In addition, metal tapping and parameter control processes also occur at the Reduction Plant.

Liquid aluminum that has been melted in the Reduction Plant will then be taken to the Casting Plant. In this plant, all liquid aluminum will be printed in INALUM's three main products, namely Aluminum Ingot, Aluminum Billet, and Aluminum Alloy.

Storage Yard merupakan lokasi penyimpanan dari seluruh produk aluminium dari INALUM. Pada lokasi inilah seluruh produk disimpan sebelum akhirnya dikirim kepada para konsumen dari INALUM.

The electricity generated by Siguragura and Tangga power stations is channeled through a 120 km transmission network with 271 towers and a voltage of 275 KV to Kuala Tanjung.

Through the Kuala Tanjung substation, the voltage is distributed to the three reduction furnace buildings and other supporting buildings through 2 silicon rectifier units with DC 37 KA and 800 V.