Anode carbon block refers to a carbon block produced with petroleum coke and pitch coke as aggregate and coal tar pitch as binder, which is used as anode material for prebaked aluminum electrolytic cells. This kind of carbon block has been roasted and has a stable geometric shape, so it is also called prebaked anode carbon block, also known as carbon anode for aluminum electrolysis. Anodes are large carbon blocks which are used to conduct electricity during the aluminium reduction process. Anodes are positive electrodes, typically made from crushed calcined petroleum coke and liquid pitch formed into rectangular blocks and baked.Carbon anodes from RAYIWELL MFG are made of calcined petroleum coke, recycled carbon materials (butts and anodes), and coal tar pitch. The pitch and coke properties strongly influence the anode quality. High-quality anodes help reduce the energy consumption and environmental emissions during the electrolysis
Pre-baked Carbon Anode: made from petroleum coke ,coal tar pitch ,through mixing ,forming and baking process , be used as anodes in cells of Primary Aluminum Smelter . Pre-baked Carbon Anodes has the property of lower Ash content, Lower Sulfur content, and Higher Compress strength .
we can produce Pre-baked Carbon Anode according to requirement of customers
1.CO2Reactivity Residue can reach above 91%,Air Reactivity can reach above 96%;the life-span in cells of aluminium electrolysis is 30-33days , with Jining’s anodes the carbon consumption required for producing one ton primary aluminum will reduce by about 30Kg than using Pre-baked Carbon Anodes produced by other suppliers .
2.Higher thermal shock Resistance
Thermal Exposure : <4*10
Heat Conductive : <3W/mkl
3.higher current density
current density : > 0.8A/cm2
4.lower Electrical Resistivity
Electrical Resistivity : 55-56μΩm
Prebaking anode carbon for aluminium electrolysis relates to a kind of prebaking anode carbon for aluminium electrolysis
Prebaked Carbon Anodes are a particular type of consumable electrodes (anodes) designed for aluminium smelting through the Hall-Héroult process. During the smelting process, these carbon anodes are suspended within the electrolysis cell(s) containing the electrolyte, which is primarily aluminium oxide (Al2O3). In the process, prebaked anode is consumed at a rate of approximately 450 kg of anode per tonne of liquid aluminium produced.
The purpose of this utility model is exactly the deficiency that exists at above-mentioned prior art, a kind of stability condition that guarantees electrolyzer is provided, effectively subtract the fraction of coverage of annotating bubble on the anode, it is violent to eliminate the ionogen boiling, cause the melt fluctuation big, the Aluminium Electrolysis poor stability quickens the molten loss of weight of aluminium, causes current efficiency to reduce the prebaking anode carbon for aluminium electrolysis of reduction problem.
The purpose of this utility model is achieved through the following technical solutions.
Prebaking anode carbon for aluminium electrolysis is characterized in that in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks, the centre on width has the matrix groove.
Prebaking anode carbon for aluminium electrolysis is characterized in that the matrix groove that has in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks is together or the two road grooves that anode bottom surface trisection is had.
Pre-baked carbon anode of the present utility model bottom has the discharge that groove helps anodic gas, the ionogen boiling is more even around the anode, the boiling dynamics obviously reduces, reduce electrolyte flow rate, reduce the disturbance of melt in the electrolyzer, the swing and the pin that reduce bath voltage shake, increase the stability of Aluminium Electrolysis, reduced the chance that " secondary reaction " takes place for negative electrode aluminium liquid and anodic gas, help improving Faradaic current efficient, reduced the residence time and the anode bottom bubble fraction of coverage of anodic gas, helped reducing the bath voltage that anodic gas causes, thereby help reducing bath voltage and save power consumption in the anode bottom.
The application of pre-baked carbon anode of the present utility model on aluminium cell, increase the channel that anodic gas is discharged, shortened the distance of anodic gas discharge process, help the discharge of anodic gas, reduced the residence time and the anode bottom bubble fraction of coverage of anodic gas in the anode bottom, the ionogen boiling is more even around the anode, the boiling dynamics obviously reduces, reduce gas and discharge the disturbance that melt is caused, the swing of bath voltage on average reduces by 2～4mv, and pin shakes and reduces about 10mv, has improved the stability of Aluminium Electrolysis, it is about 0.3% to improve electrolysis of aluminum current efficiency, and helps improving other technico-economical comparison.