Aluminum Graphite Anode
The carbon anode, also known as prebaked anode, refers to the carbon block which is roasted in the roasting furnace beforehand as anode.
1-Soft bus: 2-height adjustment, 3-prebaked anode, 4- graphite block;
5-polished aluminum; 6-cathode rod; 7-trough surface electrolyte hard shell
The graphite anode is hung in the middle of the electrolytic cell, and the direct current is entered by the aluminum guide rod, and the bottom of the graphite anode is immersed in the molten electrolyte. Oxygen produced by alumina decomposition during electrolysis, in the anode precipitation, on the 9001# temperature, rapid and hot graphite anode reaction, the formation of CO and C02, the anode consumption, consumption speed of about 1.5 ~ 1.8em/days, when the consumption of the remaining ~ 18mm height to change new.
Theoretical calculation, each production of a ton of aluminum, according to 100% generated C02 calculation, the need to consume the anode 333kg, the total production of CO calculation, the need to consume the anode 667kg, so the requirements of prebaked anode and c<^ reaction to small. At present, the actual consumption of anode (including the remaining residual pole) is generally 500-650kg, remove the residual electrode per ton of aluminum consumption of carbon is extremely $number ~ 500kg, residue after cleaning, crushing, screening, can add ingredients to reuse.
Graphite Anode Extrusion Molding production, limited to the press capacity, the specification is $number x $number x 1]50mm, with the vibration molding production, the specification is larger: $number x $number x 450mm-1450 x $number x 540mm, foreign largest specification is $number x $number x 2500mm single block weight 2.5 T.
Large graphite anode requires good thermal shock resistance, linear expansion coefficient (~ 1000T:) <3.5 X 10-6/t:, with a certain and mechanical strength, C02 reaction consumption rate <40mg/cm2*h, to reduce the carbon anode of the single consumption, take the measure is: the use of granular formula, the maximum size of the ingredients from 4mm, Change to 15mm and improve binder coal pitch quality.