Aluminum electrolysis prebaked anode carbon block coating anti-oxidation method
A technology for pre-baked anode and aluminum electrolysis, which is applied in the field of anode carbon block production in aluminum electrolysis cells, can solve the problems that coatings cannot effectively reduce the pre-baked anode carbon block, the amount of spraying materials is large, and it is not widely used. The effect of low price, less material and convenient material acquisition
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Embodiment 1
[0026] Embodiment 1: A kind of anti-oxidation method of aluminum electrolysis pre-baked anode carbon block covered with foil; using tar as adhesive, on the surface of pre-baked anode carbon block, after using adhesive to cover a layer of carbon fiber cloth, before bonding Water glass is used to spray on both sides of the carbon fiber cloth to form an anti-oxidation layer.
Embodiment 2
[0027] Embodiment 2: A kind of anti-oxidation method of aluminum electrolysis prebaked anode carbon block covered with foil; use resin as adhesive, after adopting adhesive to cover a layer of carbon fiber cloth on the surface of prebaked anode carbon block, before bonding A mixture of water glass and alumina powder is sprayed on both sides of the carbon fiber cloth to form an anti-oxidation layer, wherein the anti-oxidation layer: the mass fraction of aluminum oxide powder in water glass is 20%.
Embodiment 3
[0028]Embodiment 3: A kind of anti-oxidation method of aluminum electrolysis pre-baked anode carbon block covered with foil; use asphalt as adhesive, after adopting adhesive to cover a layer of carbon fiber cloth on the surface of pre-baked anode carbon block, before bonding A mixture of water glass and sodium fluoride powder is sprayed on both sides of the carbon fiber cloth to form an anti-oxidation layer, wherein the anti-oxidation layer: the mass fraction of sodium fluoride powder in water glass is 40%.
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