Cradle to Consumer
Identity ID
f8d8f574-9dcc-42c5-9a46-e07683a3412c
Materials
Associated ID
6f1ddcf5-d720-4aa7-9854-0e4540fa28b5
Included activities starts
Included activities ends
Description
This is a market dataset representing the consumption market in the region. It includes transportation of the product from the factory gate to consumption, with transport services calculated according to the regional transportation conditions for the product.
Activity Description
The production process of prebaked anodes includes calcination, mixing and forming, baking, cooling, and other process steps.
Process Description
Prebaked anodes are an electrode product made using petroleum coke and pitch coke as aggregates and coal tar pitch as a binder. They are used as anode materials in prebaked aluminum electrolysis cells, also known as prebaked anode carbon blocks or carbon anodes for aluminum electrolysis. Prebaked anodes are one of the essential consumable raw materials in aluminum electrolysis production; typically, about 0.5 tons of prebaked anode are consumed for every 1 ton of aluminum produced.
Time period
2018
2026
Geography
China,Gansu
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production process of prebaked anodes includes calcination, mixing and forming, baking, cooling, and other process steps. A rotary kiln calciner is used in the calcination process. During calcination, raw green petroleum coke is fed into the kiln via a top feeding device. As the material moves downward, it is gradually heated by flues located on both sides of the kiln chamber. The petroleum coke remains in the kiln for 24 to 34 hours at a temperature of 1250 to 1280°C, ultimately producing the intermediate product calcined coke. In the mixing and forming process, green scrap, recycled waste, calcined coke, etc., are proportionally fed into a preheating screw machine for preheating, then mixed with the required amount of liquid asphalt in a mixer at a temperature above 180°C, with a mixing time of 5 to 8 minutes. The mixed paste is then cooled and extruded to form green anode blocks, which are subsequently transferred to the baking workshop. The anode blocks are baked under air-free conditions at a temperature of 1150--1200 °C, using natural gas as fuel. After baking, the product is cooled to obtain the final anode product.