CN105755505A - Anode effect termination agent - Google Patents
Anode effect termination agent Download PDFInfo
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- CN105755505A CN105755505A CN201610131839.8A CN201610131839A CN105755505A CN 105755505 A CN105755505 A CN 105755505A CN 201610131839 A CN201610131839 A CN 201610131839A CN 105755505 A CN105755505 A CN 105755505A
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
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Abstract
The invention discloses an anode effect termination agent.The anode effect termination agent comprises one or more of cryolite, aluminum fluoride, sodium fluoride, aluminum oxide and industrial aluminum powder and varies in percentage composition aiming at different types of anode effects.The anode effect termination agent has the advantages of relief of labor intensity for operators, reduction of environment pollution, reduction of power consumption and material consumption, increase of yield of an electrolytic bath and improvement of production efficiency of the electrolytic bath.An effect treatment process is completed at an anode bottom interface without stirring of molten aluminum and hydrogen and aluminum oxide mixed pollution to electrolytic aluminum liquid, and high economic values and social benefits are achieved.
Description
Technical field
The present invention relates to aluminium electroloysis and purifying aluminium alloy melt field, particularly relate to a kind of anode effect quencher.
Background technology
He Yongdong, Zhang Xinming, Chen Mingan etc. are at its paper " Al in electrolytic aluminium liquid2O3The formation mechenism of field trash " in point out: anode effect be on carbon anode interface precipitate out CO2The current blockade process that gas can not be discharged in time and be caused, the frequency that effect occurs is relevant with the cold-hot condition of alumina concentration fluctuation in electrolyte, electrolysis bath.Effect itself is not resulted in aluminum liquid containing assorted, hydrogenation, and putting out effect operation can increase hydrogen and oxide inclusion content in electrolytic aluminium liquid to a certain extent.In actual production, often adopt compression air and wet batten extinguishes effect, first in electrolyte, add enough Al2O3, wetter batten is inserted in aluminum liquid-electrolyte, there is strong dehydration, the H of generation in wet batten2O and CO2Aluminum liquid is stirred by gas, and aluminum liquid, through air film barrier layer and anode in short circuit, reaches to extinguish the purpose of effect.Or high-pressure blast is directly blown in aluminum liquid, aluminum liquid produces strong wallop, stir aluminum liquid and form short circuit, reach to extinguish the purpose of effect.Compression air or wet batten dehydration product can react with high temperature aluminum liquid, generate substantial amounts of Al2O3It is mingled with and hydrogen:
4Al+6H20=2 (α-Al2O3)+6H2-395.7KJ/mol；
2Al+3CO2=(α-Al2O3)+3CO-550.38KJ/mol.
4Al+3O2=2Al2O3-1109KJ/mol；
Fig. 1 for putting out in effect process, H2O、CO2The interfacial oxide film layer that bubble produces with aluminum effect and hydrogen interaction process schematic diagram, the H of generation2、CO、CO2Contacting with the oxide-film of bubble surface Deng gas, oxidized film inwall adsorbs, and high temperature aluminum liquid flows into bubble by oxide-film gap, causes aluminum liquid hydrogen and alumina inclusion to pollute.Traditional method is adopted to extinguish the process of effect, it is actually the process of slag making in aluminum liquid, gas making, the electrolytic aluminium liquid major reason that produces that hydrogen and aluminium oxide pollute, and there is manipulation strength height, environmental pollution is big, material consumption is high, easily form the deficiencies such as a large amount of precipitation of alumina at bottom land.
Summary of the invention
The purpose of the present invention is aiming at the deficiency that above-mentioned prior art exists, it is provided that a kind of anode effect quencher not producing hydrogen and alumina inclusion.
Above-mentioned purpose is realized by following proposal:
A kind of anode effect quencher, it is characterised in that described anode effect quencher is made up of one or several in cryolite, aluminium fluoride, sodium fluoride, aluminium oxide, industry aluminium powder.
According to above-mentioned quencher, it is characterized in that, the anode effect caused is lacked to because of aluminium oxide, anode effect quencher mass percent component is: 1%～70% aluminium oxide+surplus is industry aluminium powder, or 0.5%～5% aluminium fluoride+1%～60% aluminium oxide+surplus is industry aluminium powder, or one or more mixture+1%～60% aluminium oxide+surplus in 0.5%～5% sodium fluoride or sodium carbonate or sodium bicarbonate is industry aluminium powder, or 0.5%～5% cryolite+1%～60% aluminium oxide+surplus be industrial aluminium powder；To the anode effect caused because of electrolyte atrophy, anode effect quencher mass percent component is: 0.1%～10% aluminium oxide+surplus is cryolite, or 0.1%～10% aluminium oxide+0.5%～40% industry aluminium powder+surplus is cryolite, or 0.5%～30% aluminium fluoride+5%～60% cryolite+0.1%～10% aluminium oxide+surplus is industry aluminium powder, or one or more mixture+0.1%～10% aluminium oxide+surplus in 0.5%～50% cryolite+0.5%～30% sodium fluoride or sodium carbonate or sodium bicarbonate be industrial aluminium powder；To the anode effect caused because bath temperature is on the low side, anode effect quencher component is: 1%～10% aluminium oxide+surplus is industry aluminium powder, or 0.5%～30% cryolite+1%～10% aluminium oxide+surplus is industry aluminium powder, or 0.5%～30% sodium fluoride+0.1%～10% aluminium oxide+surplus is industry aluminium powder, or one or more the mixture+surplus in 0.5%～90% sodium fluoride or sodium carbonate or sodium bicarbonate be industrial aluminium powder.
The present invention has the effect alleviating operative employee's labor intensity, minimizing environmental pollution, reduction power consumption and material consumption, raising electrolysis bath yield and production efficiency.Effect processing procedure completes in anode bottom interface, does not stir aluminum liquid, electrolytic aluminium liquid is not produced hydrogen and alumina inclusion pollutes, have significantly high economic worth and social benefit.
Accompanying drawing explanation
Fig. 1 is anode effect extinguishing process schematic diagram；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is that the present invention uses state diagram.
Detailed description of the invention
The anode effect quencher that the invention discloses is made up of one or several in cryolite, aluminium fluoride, sodium fluoride, aluminium oxide, industry aluminium powder.
Specifically, the anode effect caused is lacked to because of aluminium oxide, anode effect quencher mass percent component is: (1%-70%) aluminium oxide+surplus is industry aluminium powder, or (0.5%-5%) aluminium fluoride+(1%-60%) aluminium oxide+surplus is industry aluminium powder, or (0.5%-5%) one or more mixture+(1%-60%) aluminium oxide+surplus in sodium fluoride or sodium carbonate or sodium bicarbonate is industry aluminium powder, or (0.5%-5%) cryolite+(1%-60%) aluminium oxide+surplus be industrial aluminium powder；To the anode effect caused because of electrolyte atrophy, anode effect quencher mass percent component is: (0.1%-10%) aluminium oxide+surplus is cryolite, or (0.1%-10%) aluminium oxide+(0.5%-40%) industry aluminium powder+surplus is cryolite, or (0.5%-30%) aluminium fluoride+(5%-60%) cryolite+(0.1%-10%) aluminium oxide+surplus is industry aluminium powder, or (0.5%-50%) one or more mixture+(0.1%-10%) aluminium oxide+surplus in cryolite+(0.5%-30%) sodium fluoride or sodium carbonate or sodium bicarbonate is industry aluminium powder；To the anode effect caused because bath temperature is on the low side, anode effect quencher component is: (1%-10%) aluminium oxide+surplus is industry aluminium powder, or (0.5%-30%) cryolite+(1%-10%) aluminium oxide+surplus is industry aluminium powder, or (0.5%-30%) sodium fluoride+(0.1%-10%) aluminium oxide+surplus is industry aluminium powder, or one or more the mixture+surplus in (0.5%-90%) sodium fluoride or sodium carbonate or sodium bicarbonate be industrial aluminium powder.
The method of the present invention is to use when routine is intervened invalid in advance, pre-intervene be judge according to interface message processor (IMP) the critical groove operation conditions of effect, effect forecast situation, prediction effect classification situation, carry out intervention process in advance.The electrolysis bath on the low side to alumina concentration, progressive adjustments alumina feeding amount, make alumina concentration in electrolyte return to normal level.Electrolysis bath to temperature anomaly, adjusts the energy input state of electrolysis bath in advance, eliminates cold trap, heat channel effect.Two liquid levels (aluminum level, level of electrolyte) are unbalance, the electrolysis bath of electrolyte atrophy, adjust aluminum amount and villiaumite addition, recover two liquid levels, stop because two liquid levels are unbalance, the effect of electrolyte atrophy.
The pairing effect unsuccessful electrolysis bath of intervention, or the electrolysis bath of anode effect is there is because technique needs, adopt the effect extinguishing means of the present invention that anode effect quencher is transported to the bottom of effect anode, rely on carrier gas and effect quencher to extinguish effect.
The present invention can adopt device as shown in Figure 2, this device includes air distributing device 1, the outlet side of air distributing device 1 is connected to quencher storage tank 2, the outlet side of quencher storage tank 2 is extinguished pipe 3 by flexible pipe with effect and is connected, and process device also includes for lifting, rotating, the effect of curvature effect extinguishing pipe 3 extinguishes pipe actuating device 4.It is metal hose that effect extinguishes pipe 3, and is arranged with carbon protective sleeve outside this metal hose.Effect is extinguished pipe actuating device 4 and is included motor, speed change gear, output power shaft and clamping device；Clamping device clamps described effect by roller and extinguishes pipe 3.Process device and also include pressure shell tup 5.
The method that effect of the present invention is extinguished is to utilize carrier gas device that anode effect quencher is transported to the bottom of effect anode, and effect extinguishing process does not stir negative electrode aluminum liquid, negative electrode aluminum liquid is not produced hydrogen and alumina inclusion pollutes.Referring to Fig. 3, effect extinguishes the head of metal hose 3 that pipe actuating device 4 will be able to bend, send in the air film barrier layer 7 bottom anode 6, the effect quencher that air distributing device 1 will store in effect quencher storage tank 2, it is delivered in air film barrier layer 7, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion is also breakdown, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, improve the wettability of electrolyte and anode, reach the purpose of anode effect terminating.
The present invention can also carry out conventional effect post processing and include: pole span adjustment, groove pressure adjusts, groove face arranges, and requires to make aluminum scheme implementation and supervision according to aluminum liquid horizontal adjustment, requires to formulate villiaumite, additive interpolation scheme implementation and supervision according to electrolyte component adjustment.Effect post-processing operation terminates, and this groove proceeds to the critical slot status of effect and is monitored.
Embodiment 1: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 2h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 5:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 10mV simultaneously, increase electrolysis bath heat income, after 3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishes the head of metal hose that pipe actuating device will be able to bend, send in the air film barrier layer bottom anode, the effect quencher (0.5% aluminium oxide+99.5% cryolite) that air distributing device will store in effect quencher storage tank, being delivered in air film barrier layer, the cryolite in effect quencher dissolves, and supplements cell bath, cleaning anode bottom, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 2: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 1.5h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 4:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 10mV simultaneously, increase electrolysis bath heat income, after 2.5h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (10% aluminium oxide+90% cryolite), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 3: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 1.9h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 4:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 10mV simultaneously, increase electrolysis bath heat income, after 2.5h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% aluminium oxide+0.5% industry aluminium powder, cryolite surplus), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 4: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 1.9h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 4:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 10mV simultaneously, increase electrolysis bath heat income, after 2.5h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (10% aluminium oxide+40% industry aluminium powder, cryolite surplus), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 5: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 2.2h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 5:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 18mV simultaneously, increase electrolysis bath heat income, after 3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% aluminium fluoride+0.3% aluminium oxide+5% cryolite, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, aluminium fluoride turns down electrolyte molecular proportion, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 6: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 2.8h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 5:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 16mV simultaneously, increase electrolysis bath heat income, after 3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (30% aluminium fluoride+10% aluminium oxide+59% cryolite, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, aluminium fluoride turns down electrolyte molecular proportion, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 7: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 2.8h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 5:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 16mV simultaneously, increase electrolysis bath heat income, after 3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% sodium fluoride+0.5% aluminium oxide+0.5% cryolite, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, sodium fluoride heightens electrolyte molecular proportion, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 8: the anode effect that electrolyte atrophy causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove electrolyte atrophy of effect, it was predicted that generating effect after 2.8h.Slot control machine Set-out slide effect intervention program, during blanking operation, a certain proportion of cryolite (aluminium oxide and cryolite ratio are 5:1) is allocated in alumina material, with supplementary cell bath, improve level of electrolyte, heighten tank voltage 16mV simultaneously, increase electrolysis bath heat income, after 3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (30% sodium fluoride+10% aluminium oxide+50% cryolite, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite in effect quencher dissolves, supplement cell bath, cleaning anode bottom, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, sodium fluoride heightens electrolyte molecular proportion, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 9: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.5h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 6% (being foreshortened to 4.7 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 5% (discharge quantity is increased to 3.78kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 14mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 1.9h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (1% aluminium oxide+99% industry aluminium powder), it is delivered in air film barrier layer, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 10: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.7h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 6% (being foreshortened to 4.7 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 5% (discharge quantity is increased to 3.78kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 25mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 2.3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (70% aluminium oxide+30% industry aluminium powder), it is delivered in air film barrier layer, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 11: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.8h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 6% (being foreshortened to 4.7 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 5% (discharge quantity is increased to 3.78kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 18mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 2.3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% aluminium fluoride+1% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, aluminium fluoride in effect quencher turns down electrolyte molecular proportion, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, and gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 12: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.7h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 5% (being foreshortened to 4.5 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 3% (discharge quantity is increased to 3.708kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 10mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 2.5h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (5% aluminium fluoride+60% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, aluminium fluoride in effect quencher turns down electrolyte molecular proportion, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, and gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 13: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 3.5h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 3% (being foreshortened to 4.85 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 2% (discharge quantity is increased to 3.672kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 25mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 3.4h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% sodium fluoride+1% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, sodium fluoride in effect quencher heightens electrolyte molecular proportion, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, and gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 14: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 3.5h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 3% (being foreshortened to 4.85 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 2% (discharge quantity is increased to 3.672kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 19mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 3.9h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (5% sodium fluoride+60% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, sodium fluoride in effect quencher heightens electrolyte molecular proportion, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, and gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 15: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.4h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 10% (being foreshortened to 4.5 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 9% (discharge quantity is increased to 3.924kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 25mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 1.6h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (5% sodium fluoride+60% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, sodium fluoride in effect quencher heightens electrolyte molecular proportion, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, and gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improves alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 16: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.1h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 10% (being foreshortened to 4.5 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 10% (discharge quantity is increased to 3.96kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 30mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 1.2h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% cryolite+1% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite in effect quencher supplements electrolyte, increase alumina dissolution amount, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improve alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 17: aluminium oxide lacks the anode effect caused and extinguishes.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that the critical groove aluminium oxide of effect lacks, it was predicted that generating effect after 1.9h.Slot control machine Set-out slide effect intervention program, duty cycle is shortened 8% (being foreshortened to 4.6 minutes by original 5 minutes) in blanking, the alumina amount of each blanking increases by 6% (discharge quantity is increased to 3.816kg/ time) by original 3.6kg/ time, to improve alumina concentration in electrolyte, heighten tank voltage 33mV simultaneously, increase electrolysis bath heat income, to ensure that the aluminium oxide increased dissolves in time, after 2.2h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% cryolite+1% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite in effect quencher supplements electrolyte, increase alumina dissolution amount, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improve alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 18: the anode effect that the electrolysis bath that bath temperature is on the low side causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that effect critical groove bath temperature is on the low side, it was predicted that generating effect after 1.8h.Slot control machine Set-out slide effect intervention program, blanking is constant for duty cycle, the alumina amount of each blanking reduces by 6% (discharge quantity is increased to 3.384kg/ time) by original 3.6kg/ time, to prevent electrolysis bath from producing precipitation of alumina, heighten tank voltage 45mV simultaneously, increase electrolysis bath heat income, after 2h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (1% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, reaction liberated heat regulating electrolytic tank thermal balance, the heat that effector phase produces makes bath temperature raise, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improve alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 19: the anode effect that the electrolysis bath that bath temperature is on the low side causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that effect critical groove bath temperature is on the low side, it was predicted that generating effect after 2.5h.Slot control machine Set-out slide effect intervention program, blanking is constant for duty cycle, the alumina amount of each blanking reduces by 5% (discharge quantity is increased to 3.42kg/ time) by original 3.6kg/ time, to prevent electrolysis bath from producing precipitation of alumina, heighten tank voltage 38mV simultaneously, increase electrolysis bath heat income, after 2.8h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (10% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, industrial aluminium powder in effect quencher and carbon dioxide vigorous reaction in air film barrier layer, reaction liberated heat regulating electrolytic tank thermal balance, the heat that effector phase produces makes bath temperature raise, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, improve alumina concentration, anode effect extinguishing in electrolyte bottom anode.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 20: the anode effect that the electrolysis bath that bath temperature is on the low side causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that effect critical groove bath temperature is on the low side, it was predicted that generating effect after 3.1h.Slot control machine Set-out slide effect intervention program, blanking is constant for duty cycle, the alumina amount of each blanking reduces by 4% (discharge quantity is increased to 3.456kg/ time) by original 3.6kg/ time, to prevent electrolysis bath from producing precipitation of alumina, heighten tank voltage 30mV simultaneously, increase electrolysis bath heat income, after 3.3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% cryolite+1% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, cryolite electrolyte supplement in effect quencher, improve level of electrolyte, increase alumina dissolution energy, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, reaction liberated heat regulating electrolytic tank thermal balance, the heat that effector phase produces makes bath temperature raise, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 21: the anode effect that the electrolysis bath that bath temperature is on the low side causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that effect critical groove bath temperature is on the low side, it was predicted that generating effect after 3.1h.Slot control machine Set-out slide effect intervention program, blanking is constant for duty cycle, the alumina amount of each blanking reduces by 4% (discharge quantity is increased to 3.456kg/ time) by original 3.6kg/ time, to prevent electrolysis bath from producing precipitation of alumina, heighten tank voltage 40mV simultaneously, increase electrolysis bath heat income, after 3.3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (0.5% sodium fluoride+0.3% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, sodium fluoride in effect quencher improves electrolyte molecular proportion, increase electrolyte oxidation aluminum solvability, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, reaction liberated heat regulating electrolytic tank thermal balance, the heat that effector phase produces makes bath temperature raise, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Embodiment 22: the anode effect that the electrolysis bath that bath temperature is on the low side causes is extinguished.
According to interface message processor (IMP), slot control machine, groove operational factor is analyzed result, it is determined that effect critical groove bath temperature is on the low side, it was predicted that generating effect after 1.2h.Slot control machine Set-out slide effect intervention program, blanking is constant for duty cycle, the alumina amount of each blanking reduces by 10% (discharge quantity is increased to 3.24kg/ time) by original 3.6kg/ time, to prevent electrolysis bath from producing precipitation of alumina, heighten tank voltage 60mV simultaneously, increase electrolysis bath heat income, after 1.3h, electrolysis bath generation anode effect, slot control machine Set-out slide effect extinguishes program.Effect extinguishing means is by effect quencher (30% sodium fluoride+10% aluminium oxide, surplus is industry aluminium powder), it is delivered in air film barrier layer, sodium fluoride in effect quencher improves electrolyte molecular proportion, increase electrolyte oxidation aluminum solvability, industry aluminium powder and carbon dioxide vigorous reaction in air film barrier layer, reaction liberated heat regulating electrolytic tank thermal balance, the heat that effector phase produces makes bath temperature raise, gas expansion also punctures air film barrier layer, the activated alumina that reaction generates dissolves in rapidly electrolyte, the aluminium oxide liquid added dissolves rapidly, alumina concentration in electrolyte bottom raising anode, anode effect is extinguished.Subsequently, slot control machine is by groove pressure and reinforced recovery normal process standard.
Claims (2)
1. an anode effect quencher, it is characterised in that described anode effect quencher is made up of one or several in cryolite, aluminium fluoride, sodium fluoride, aluminium oxide, industry aluminium powder.
2. quencher according to claim 2, it is characterized in that, the anode effect caused is lacked to because of aluminium oxide, anode effect quencher mass percent component is: 1%～70% aluminium oxide+surplus is industry aluminium powder, or 0.5%～5% aluminium fluoride+1%～60% aluminium oxide+surplus is industry aluminium powder, or one or more mixture+1%～60% aluminium oxide+surplus in 0.5%～5% sodium fluoride or sodium carbonate or sodium bicarbonate is industry aluminium powder, or 0.5%～5% cryolite+1%～60% aluminium oxide+surplus be industrial aluminium powder；To the anode effect caused because of electrolyte atrophy, anode effect quencher mass percent component is: 0.1%～10% aluminium oxide+surplus is cryolite, or 0.1%～10% aluminium oxide+0.5%～40% industry aluminium powder+surplus is cryolite, or 0.5%～30% aluminium fluoride+5%～60% cryolite+0.1%～10% aluminium oxide+surplus is industry aluminium powder, or one or more mixture+0.1%～10% aluminium oxide+surplus in 0.5%～50% cryolite+0.5%～30% sodium fluoride or sodium carbonate or sodium bicarbonate be industrial aluminium powder；To the anode effect caused because bath temperature is on the low side, anode effect quencher component is: 1%～10% aluminium oxide+surplus is industry aluminium powder, or 0.5%～30% cryolite+1%～10% aluminium oxide+surplus is industry aluminium powder, or 0.5%～30% sodium fluoride+0.1%～10% aluminium oxide+surplus is industry aluminium powder, or one or more the mixture+surplus in 0.5%～90% sodium fluoride or sodium carbonate or sodium bicarbonate be industrial aluminium powder.
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