OA17186A - Inert alloy anode used for aluminum electrolysis and preparation method therefor. - Google Patents
Inert alloy anode used for aluminum electrolysis and preparation method therefor. Download PDFInfo
- Publication number
- OA17186A OA17186A OA1201400539 OA17186A OA 17186 A OA17186 A OA 17186A OA 1201400539 OA1201400539 OA 1201400539 OA 17186 A OA17186 A OA 17186A
- Authority
- OA
- OAPI
- Prior art keywords
- métal
- parts
- weight
- blocks
- anode
- Prior art date
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 145
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 144
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 63
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract 2
- 229910052802 copper Inorganic materials 0.000 claims abstract description 30
- 229910052742 iron Inorganic materials 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims description 65
- 239000000203 mixture Substances 0.000 claims description 35
- 238000002156 mixing Methods 0.000 claims description 29
- 229910052718 tin Inorganic materials 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 20
- 150000002739 metals Chemical class 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 30
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005755 formation reaction Methods 0.000 abstract description 2
- 239000000470 constituent Substances 0.000 abstract 4
- 230000003064 anti-oxidating Effects 0.000 abstract 1
- 230000003078 antioxidant Effects 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 77
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 77
- 239000011135 tin Substances 0.000 description 74
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 49
- 239000010405 anode material Substances 0.000 description 24
- 238000007254 oxidation reaction Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052803 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- PQXKHYXIUOZZFA-UHFFFAOYSA-M Lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M Potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N HF Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 238000009626 Hall-Héroult process Methods 0.000 description 1
- 229910003264 NiFe2O4 Inorganic materials 0.000 description 1
- 229910003301 NiO Inorganic materials 0.000 description 1
- REHXRBDMVPYGJX-UHFFFAOYSA-H Sodium hexafluoroaluminate Chemical compound [Na+].[Na+].[Na+].F[Al-3](F)(F)(F)(F)F REHXRBDMVPYGJX-UHFFFAOYSA-H 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 229910001325 element alloy Inorganic materials 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- -1 magnésium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N nickel(II) oxide Inorganic materials [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- GNMQOUGYKPVJRR-UHFFFAOYSA-N nickel(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Ni+3].[Ni+3] GNMQOUGYKPVJRR-UHFFFAOYSA-N 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002588 toxic Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
An inert alloy anode used for aluminum electrolysis. The anode has Fe and Cu as the main constituents and comprises Sn. The addition of the Sn metal is conducive to the formation of a layer of oxidized film having a great antioxidant activity and structural stability on the surface of the inert alloy anode, and is conducive to an increase in the corrosion resistance of the anode. On this basis, the constituents of the inert alloy anode also comprise Ni, Al, and Y. The addition of the Al metal prevents the main metal constituents from being oxidized, the addition of the Y metal controls the alloy to provide a required polymorph in a preparation process, thus achieving the goal of anti-oxidation. The inert alloy anode having Fe and Cu as the main constituents has a low overvoltage, high electric conductivity, and reduced costs, and is applicable in the aluminum electrolysis industry.
Description
The présent Invention relates to an Inert alloy anode for alumlnum electrolysis and a preparing method thereof, belonglng to the field of alumlnum electrolysis Industry.
Background of the Invention
Aluminum electrolysis refers to acquisition of aluminum by alumina electrolysis. In the prior art, a traditional Hall-Heroult molten sait aluminum electrolysis process is typically adopted for aluminum electrolysis, this process Is featured by use of a cryolite-alumina molten sait electrolysis method In which cryolite NajAIFe fluoride sait meit Is taken as flux, AI2O3 Is dissolved In the fluoride sait, a carbon body Is taken as an anode, aluminum liquid Is taken as a cathode, and electrolytlc aluminum is obtained by performing electrochemical reaction at the anode and cathode of the electrolytlc cell at a hlgh température ranglng from 940°C to 960’C after a strong direct current is Introduced. In the traditional aluminum electrolysis process, a carbon anode Is ceaselessly consumed in the electrolysis process, thus constant replacement for the carbon anode Is required; moreover, carbon dioxlde, carbon monoxlde, toxic fluorine hydride and other waste gases are continuously generated at the anode during alumina electrolysis, émission of these gases Into environment will be harmful to environment and health of human and livestock, so that the waste gases generated by alumlnum electrolysis need to be purified before émission, which accordingly Increases the Investment cost of the alumina electrolysis production process.
Consumption of the anode material In the process of alumlnum electrolysis Is mainly caused by oxidization reaction, In the electrolysis process, of the carbon anode material used in the traditional Hall-Heroult process. Therefore, many domestic and foreign researchers hâve commenced the study on anode material In order to reduce consumption of the anode material In the process of aluminum electrolysis and slmultaneously lessen waste gas émission. For example, dïsclosed in Chinese patent document CN102230189A is a métal ceramic inert anode material for aluminum electrolysis, which Is obtained by the steps of preparing an NiO-NiFe2O4 métal ceramic matrix from raw materials Inciuding Ni2O3 and Fe2O3 and then adding métal copper powder and nano NiO, and which has an electric conductivity as high as 102Ω'1·επϊ1. In the above art, the anode material with métal ceramic as the matrix, though hardiy reacting with electrolyte, Is large In résistance and high In overvoitage, which results In large power consumption of the process and high cost In the process of alumlnum electrolysis; furthermore, the anode material with meta! ceramic as the matrix has poor thermal shock résistance and consequently Is liable to brittlement during use; and In addition, the processability In use of the anode made from the above materials Is poor just because the anode material having the métal ceramic matrix Is liable to brittlement, as a resuit, the anode In any shape can not be obtained.
To solve the problem that the anode material having the métal ceramic matrix Is low In electric conductivity and brittle In structure, some researchers hâve brought forward use of alloy metals as the anode material, In order to improve the electric conductivity of the anode material and slmultaneously Improve the processability of the anode material. Disclosed In Chinese patent document CN1443877A Is an inert anode material applied to aluminum, magnésium, rare earth and other electrolysis Industries, this material is formed by binary or multî-element alloy composed of chromium, nickel, ferrum, cobalt, titanium, copper, aluminum, magnésium and other metals, and the préparation method thereof is a method of smelting or powder metailurgy. The prepared anode material Is good In electric and thermal conductivity and generates oxygen In the electrolysis process, wherein in Example 1, an anode is made of the alloy material composed of 37wt% of cobalt, 18wt% of copper, 19wt% of nickel, 23wt% of ferrum and 3wt% of süver and Is used for aluminum electrolysis, the anode has a current density of 1.0A/cm2 In the electrolysis process at 850C and the cell voltage Is steadily maintalned within a range from 4.1V to 4.5V In the electrolysis process, the prepared aluminum has a purity of 08.35%.
In the case that the alloy composed of a plurality of metals, Induding chromium, nickel, ferrum, cobalt, titanium, copper, aluminum and magnésium, Is used as the anode material for aluminum electrolysis In the above art, thls alioy anode material has hlgher eiectric conductivity than the anode ceramic matrix anode material, can be processed In any shape by a smelting or powder metallurgy method and Is hardly consumed In the electrolysis process compared with the carbon anode material. However, a large amount of expensive métal materials are used in préparation of the alioy anode In the above art to resuit in high cost of the anode material, and thus this alioy anode fails to meet the demand on Industrial cost; moreover, the alioy anode prepared from the above métal components is low in eiectric conductivity and high in overvoltage, so that the power consumption of the process is Increased, thus the alioy anode cannot meet the needs of the aluminum electrolysis process.
in addition, an oxide film Is generated on the surface of the prepared alioy anode in the prior art, and if this oxide fiim is destroyed, the anode material exposed to the surface will be oxldized as a new oxide film. The oxide film on the surface of the alioy anode in the above art has low oxidization résistance and 1s further fiable to oxidization reaction to generate products that are likely to be corroded by electroiyte, and the oxide film with low stability is liable to fali off the anode electrode In the electrolysis process; after the previous oxide film is corroded or falls off, the material of the alioy anode exposed to the surface will croate a new oxide film by reaction with oxygen, such replacement between new and old oxide films résulte In continuous consumption and poor corrosion résistance of the anode material as well as short service life of électrodes; furthermore, the corroded or falling oxide film enters into liquid aluminum In the electrolysis process of alumina to dégradé the purity of the final product aluminum, as a resuit, the manufactured aluminum product cannot meet the demand of national standards and accordingly cannot be directly used as a finlshed product.
Summary of the Invention
The first technical problem to be solved by the présent invention 1s that the alioy anode In the prior art is expensive in métal materials used, high In process cost, low In eiectric conductivity and high In overvoltage, as a resuit, power consumption of the process Is Increased; therefore, provided 1s an Inert alioy anode for aluminum electrolysis with iow cost and overvoltage, and a preparing method thereof.
Simultaneously, the second technical problem to be solved by the présent invention is that, an oxide film on the surface of the alloy anode in the prior art Is iow in oxidation résistance and liabie to fali off, which leads to continuous consumptïon of the alloy anode and poor corrosion résistance, furthermore, the corroded or falling oxide film enters into liquid aluminum to dégradé the purity of the 5 final product aluminum; therefore, provided Is an Inert alloy anode for aluminum eiectroiysis, which Is strong In oxidization résistance of the oxide film formed on the surface and not liabie to fali off so as to improve the corrosion résistance thereof and the purity of the product aluminum, and a preparing method ofthe inert alloy anode.
To soive the aforementioned technical probiems, the présent invention provides an inert alloy anode 10 for aluminum eiectroiysis, which contalns Fe and Cu as primary components, and further contalns Sn.
The mass ratio of Fe to Cu to Sn is (23-40): (36-60): (0.2-5) or (40.01-80): (0.01-35.9): (0.01-0.19).
The inert alloy anode further contalns Ni.
The mass ratio of Fe to Cu to Ni to Sn Is (23-40): (36-60): (14-28): (0.2-5) or (40.01-80): (0.01-35.9): 15 (28.1-70):(0.01-0.19).
The Inert alloy anode is composed of Fe, Cu, Ni and Sn, wherein the content of Fe Is 23-40wt%, the content of Cu Is 36-60wt%, the content of Ni Is 14-28wt% and the content of Sn is 0.2-5wt%, or the content of Fe is 40.01-71.88wt%, the content of Cu is 0.01-31.88wt%, the content of Ni is 28.1-59.97wt% and the content of Sn is 0.01-0.19wt%.
The inert alloy anode further contalns Ai.
The Inert alloy anode Is composed of Fe, Cu, Ni, Sn and Al, wherein the content of Fe is 23-40wt%, the content of Cu Is 36-60wt%, the content of Ni Is 14-28wt%, the content of Al Is more than zéro and less than or equal to 4wt% and the content of Sn Is 0.2-5wt%, or the content of Fe is 40.01-71.88wt%, the content of Cu Is 0.01-31.88wt%, the content of NI is 28.1-59.97wt%, the 25 content of Al is more than zéro and less than or equal to 4wt% and the content of Sn Is 0.01-0.19wt%.
The Inert alloy anode further contalns Y.
The Inert alloy anode is composed of Fe, Cu, Ni, Sn, Ai and Y, wherein the content of Fe is 23-40wt%, the content of Cu Is 36-60wt%, the content of Ni Is 14-28wt%, the content of Al Is more than zéro and less than or equal to 4wt%, the content of Y Is more than zéro and less than or equal to 2wt% and the content of Sn Is 0.2-5wt%, or the content of Fe Is 40.01-71.88wt%, the content of Cu Is 0.01-31.88wt%, the content of Ni Is 28.1-59.97wt%, the content of AI 1s more than zéro and less than or equal to 4wt%, the content of Y is more than zéro and less than or equal to 2wt% and the content of Sn is 0.01-0.19wt%.
A preparing method of the inert alloy anode comprises the following steps:
melting and uniformly mixing the metais Fe, Cu and Sn, and then rapidly casting and cooling the mixture to obtain the Inert alloy anode;
or, melting the metais Fe, Cu and Sn at first, then adding and melting the métal Al or Y, and uniformly mixing, or adding and meiting the meta! Al at first, then adding and melting the metai Y, uniformly mixing, and rapidiy casting and cooling the mixture to obtain the inert alloy anode;
or, meiting and mixing the metais Fe, Cu, Ni and Sn and then casting the mixture to obtain the inert alloy anode;
or, melting the metais Fe, Cu, Ni and Sn at first, then adding and melting the métal A! or Y, and uniformly mixing, or adding and melting the metai Al at first, then adding and melting the métal Y, uniformly mixing, and casting the mixture to obtain the inert alloy anode.
Compared with the prior art, the inert alloy anode for aluminum electrolysis in the présent invention has the bénéficiai effects below:
(1) The Inert alloy anode for aluminum electrolysis in the présent invention contains Fe and Cu as primary components, and further contains Sn. The inert alloy anode with the above components is low in cost, low in overvoltage and smali in power consumption of the aluminum electrolysis process; the anode matériel is alloy composed of Fe, Cu and Sn, so an oxide film formed on the surface of the Inert alloy anode In the electrolysis process is high in oxidation résistance and is hardly corroded by electrolyte, and the formed oxide film is stable and not liable to fail off, therefore, the Inert alloy anode Is imparted with quite high oxidation résistance and corrosion résistance, it is precisely because of high oxidation résistance and corrosion résistance of the inert alloy anode, Impurities entering into liquid aluminum, which are generated by corrosion or falling off of the anode material, are avoided, so as to ensure the purity of aluminum products, that Is, the purity of the produced aluminum can reach 99.8%. The following problems are avoided: the alloy anode in the prior art has high cost and overvoltage and large power consomption of process, the oxide film on the alloy surface Is low In oxidation résistance and liable to fall off, which leads to continuous consomption of the alloy anode and poor corrosion résistance, forthermore, the corroded or falling oxide film enters into liqoid aluminum to dégradé the purity of the final product aluminum.
(2) The inert alloy anode for aluminum electrolysis In the présent Invention is composed of Fe, Cu, NI and Sn, wherein the content of Fe Is 23-40wt%, the content of Cu is 36-60wt%, the content of Ni Is 14-28wt% and the content of Sn Is 0.2-5wt%, or the content of Fe is 40.01-71.88wt%, the content of Cu is 0.01-31.88wt%, the content of Ni Is 28.1-59.97wt% and the content of Sn is 0.01-0.19wt%.
The alloy anode In the présent invention contains Fe and Cu as primary components, their content proportions are high, so the materiai cost of the inert alloy anode is reduced, meanwhile, the Inert alloy anode composed of the aforementioned métal components is high in electric conductivity and has a cell voltage as low as 3.1V to 3.4V, power consomption for aluminum electrolysis is small, the power consomption for per ton of aluminum is not more than 11000kw*h, so the production cost of electrolytic aluminum Is iow. The following problems are avoided: a large quantity of expensive métal materials are used In the anode material In the prior art, resulting in increase of the anode production cost; the prepared alloy anode is low in electric conductivity, large in power consumption for aluminum electrolysls and Increased In cost, and cannot be applied to Industrial production. The added métal Ni Is capable of promoting firmer combination among other types of metals, and the added métal Sn ensures that an oxide film with high oxldization résistance, good corrosion résistance and high stability can be formed on the surface of the inert alloy anode in the electrolysls process.
(3) The inert alloy anode for aluminum electrolysis In the présent invention is composed of Fe, Cu, Ni, Sn, Al and Y, wherein the content of Fe Is 23-40wt%, the content of Cu Is 36-60wt%, the content of Ni is 14-28wt%, the content of Al Is more than zéro and less than or equal to 4wt%, the content of
Y is more than zéro and iess than or equai to 2wt% and the content of Sn Is 0.2-5wt%, or the content of Fe is 40.01-71.88wt%, the content of Cu is 0.01-31.88wt%, the content of Ni Is 28.1-59.97wt%, the content of Al is more than zéro and iess than or equai to 4wt%, the content of Y Is more than zéro and less than or equai to 2wt% and the content of Sn Is 0.01 -0.19wt%. Similarly, the 5 aforementioned Inert alloy anode has the advantages of low material cost and high electric conductivity, in addition, the métal Al contained In the aforementioned inert ailoy anode plays a rôle of oxldization résistance and can serve as a reducing agent for métallothermie réduction réaction with a métal oxide In the Inert anode alloy, thus ensure the percentage of the primary components In the inert alloy anode, meanwhile, the added métal Y can be used for controlling a crystal structure 10 for anode material formation In the préparation process of the Inert anode, achieving the antl-oxldization purpose.
(4) The Inert alloy anode for alumlnum electrolysis in the présent Invention has a melting point of 1360-1386’C, a spécifie resistivity of 68-76.8pD*cm at 20*C and a density of 8.1-8.3g/cm3. The prepared inert alloy anode has a quite high melting point and accordingly can meet the demand of aluminum electrolysis on high température environment; furthermore, the aforementioned inert alloy anode has a quite low overvoltage, so power consumption of the aluminum electrolysis process can be reduced; the prepared Inert alloy anode Is even in texture and has a density within a range from 8.1 g/cm3 to 8.3g/cm3, in this way, stable service property of the inert alloy anode Is guaranteed.
(5) The preparing method of the inert alloy anode comprises the following steps: melting and 20 uniformly mixing the metals Fe, Cu and Sn, and then rapidiy casting and cooiing the mixture to obtain the inert alloy anode; or, melting the metals Fe, Cu and Sn at first, then adding and melting the métal Al or Y, and uniformly mixing, or adding and melting the métal Al at first, then adding and melting the métal Y, uniformly mixing, and rapidiy casting and cooiing the mixture to obtain the Inert alioy anode; or, melting and mixing the metals Fe, Cu, Ni and Sn and then casting the mixture to 25 obtain the Inert alioy anode; or, melting the metals Fe, Cu, Ni and Sn at first, then adding and melting the métal Al or Y, and uniformly mixing, or adding and melting the métal Al at first, then adding and melting the métal Y, uniformly mixing, and casting the mixture to obtain the Inert alloy anode. The aforementioned Inert alloy anode is simple In préparation process and can be prepared In any shape according to the actual needs. During préparation of the alloy contalnlng the metals Al and Y, Al Is added at first to prevent other molten métal components from belng oxidized, and then, Y is added and molten to finally obtain the alloy havlng a desired crystal form.
For more easily understanding the technical solution of the présent invention, further description will be made below to the technical solution of the présent invention in conjunction with the embodiments.
Detalled Description of the Embodiments
Embodiment 1 parts by weight of Fe métal blocks, 60 parts by weight of Cu métal blocks and 0.2 parts by weight of Sn métal blocks are molten and then uniformly mlxed under hlgh-speed electromagnetic stirring, the mixture is rapîdiy cast and then rapidly cooled at a speed of 20-100°C/s to obtain an inert alloy anode 1 which is homogeneous In texture. The inert alloy anode has a density of 8.3g/cm3, a spécifie resistivity of 62pQ*cm and a melting point of 1400’C.
Embodiment 2 parts by weight of Fe métal blocks, 36 parts by weight of Cu métal blocks and 5 parts by weight of Sn métal blocks are molten and then uniformly mlxed under high-speed electromagnetic stirring, the mixture is rapidly cast and then rapidly cooled at a speed of 20-100’C/s to obtain an inert alloy anode 2 which is homogeneous In texture. The inert alloy anode has a density of 7.8g/cm3, a spécifie resistivity of 82pO«cm and a melting point of 1369’C.
Embodiment 3 parts by weight of Fe métal blocks, 45 parts by weight of Cu métal blocks and 3 parts by weight of Sn métal blocks are molten and then uniformly mlxed under high-speed electromagnetic stirring, the mixture is rapidly cast and then rapidly cooled at a speed of 20-100'C/s to obtain an inert alloy anode 3 which is homogeneous in texture. The inert ailoy anode has a density of 7.9g/cm3, a spécifie resistivity of 86pC*cm and a melting point of1390*C.
Embodiment 4 parts by weight of Fe métal blocks, 50 parts by weight of Cu métal blocks, 20 parts by weight of Mo and 5 parts by weight of Sn métal blocks are molten and then cast to obtain an Inert alloy anode 4. The Inert alloy anode has a density of 8.2g/cm3, a spécifie resistivity of 78μΩ·αη and a melting point of1370’C.
Embodiment 5 parts by weight of Fe métal blocks, 60 parts by weight of Cu métal blocks, 14 parts by weight of Ni and 3 parts by weight of Sn métal blocks are molten and then cast to obtain an inert alloy anode 5. The inert alloy anode has a density of 8.3g/cm3, a spécifie resistivity of 68μΩ·ατ) and a melting point of 1360’C.
Embodiment 6 parts by weight of Fe métal blocks, 36 parts by weight of Cu métal blocks, 19 parts by weight of NI and 5 parts by weight of Sn métal blocks are molten and then cast to obtain an inert alioy anode 6. The inert alloy anode has a density of 8.1g/cm3, a spécifie resistivity of 76.8μΩ·ση and a melting point of 1386*C.
Embodiment 7 parts by weight of Fe métal blocks, 46.8 parts by weight of Cu métal blocks, 28 parts by weight of Ni and 0.2 parts by weight of Sn métal blocks are molten and then cast to obtaln an Inert alloy anode 7. The Inert alloy anode has a density of 8.2g/cm3, a spécifie resistivity of 72μΩ·αη and a melling point of 1350eC.
Embodiment 8 parts by welght of Fe métal blocks, 60 parts by welght of Cu métal blocks, 14 parts by welght of Ni and 3 parts by weight of Sn métal blocks are molten and then cast to obtain an Inert alloy anode 8. The Inert alloy anode has a density of 8.1g/cm3, a spécifie resistivîty of 70pQ*cm and a melting point of1330eC.
Embodiment 9 parts by weight of Fe métal blocks, 36 parts by welght of Cu métal blocks, 19 parts by welght of Ni and 5 parts by weight of Sn métal blocks are moiten and then cast to obtain an inert alloy anode 9. The Inert alloy anode has a density of 8.2g/cm3, a spécifie resistivîty of 73pQ*cm and a melting point of1340’C.
Embodiment 10 parts by welght of Fe métal blocks, 47.8 parts by weight of Cu métal blocks, 28 parts by welght of Ni and 0.2 parts by weight of Sn métal blocks are molten and then cast to obtain an Inert alloy anode 10. The Inert alloy anode has a density of 8.0g/cm3, a spécifie resistivîty of 74pQ*cm and a melting point of 1350’C.
Embodiment 11 parts by weight of Fe métal blocks, 41 parts by welght of Cu métal blocks and 5 parts by weight of Sn métal blocks are moiten at first, then 3 parts by welght of Al métal blocks are added and sequentially molten, unifbrm mixing is performed under high-speed electromagnet stlrring, and the mixture is rapldly cast and then rapidly cooled to obtain an Inert ailoy anode 11. The inert ailoy anode has a density of 8.1g/cm3, a spécifie resistivîty of 68pQ*cm and a melting point of 1370’C.
Embodiment 12 parts by weight of Fe métal blocks, 60 parts by weight of Cu métal blocks, 14 parts by weight of Ni and 0.2 parts by weight of Sn métal blocks are molten at first, then 2.8 parts by weight of Al métal blocks are added and sequentially molten, and an inert alloy anode 12 is obtained by casting. The Inert alloy anode has a density of 8.4g/cm3, a spécifie resistivity of 69pQ’cm and a melting point of 1340“C.
Embodîment 13 parts by weight of Fe métal blocks, 36 parts by weight of Cu métal blocks, 15 parts by weight of NI and 5 parts by weight of Sn metai blocks are molten at first, then 4 parts by weight of Ai métal blocks are added and sequentially molten, and an inert alloy anode 13 is obtained by casting. The inert alloy anode has a density of 8.15g/cm3, a spécifie resistivity of 69μΩ·0Γη and a melting point of 1369*C.
Embodîment 14 parts by weight of Fe métal blocks, 47 parts by weight of Cu métal blocks, 14 parts by weight of Ni and 2.9 parts by weight of Sn métal blocks are molten at first, then 0.1 parts by weight of Al métal blocks are added and sequentially molten, and an Inert alloy anode 14 is obtained by casting. The inert alloy anode has a density of 8.0g/cm3, a spécifie resistivity of 67.6pQ*cm and a melting point of 1379’C.
Embodîment 15 parts by weight of Fe métal blocks, 50 parts by weight of Cu métal blocks and 4 parts by weight of Sn métal blocks are molten at first, then 1 part by weight of Y métal blocks are added and sequentially molten, uniform mixing is performed under hlgh-speed electromagnet stirring, and the mixture is rapidiy cast and then rapidly cooled to obtain an inert alloy anode 15. The Inert alloy anode has a density of 8.4g/cm3, a spécifie resistivity of 67μΩ·ατι and a melting point of 1358’C.
Embodiment 16 parts by weight of Fe métal blocks, 45 parts by weight of Cu métal blocks, 24 parts by weight of Ni and 4 parts by weight of Sn métal blocks are molten at first, then 2 parts by weight of Y métal blocks are added and sequentially molten, and an Inert alioy anode 16 is obtained by casting. The Inert alloy anode has a density of 8.1g/cm3, a spécifie resistivity of 70.9pQ*cm and a melting point of 1375*C.
Embodiment 17 parts by weight of Fe métal blocks, 50 parts by weight of Cu métal blocks and 4 parts by weight of Sn métal blocks are molten at first, then 3 parts by weight of Al métal blocks are added and sequentially molten, finally, 1 part by weight of Y métal blocks are added and molten, unifbrm mlxing Is performed under high-speed electromagnet stirrîng, and the mixture is rapidly cast and then rapldly cooled to obtain an inert alloy anode 17. The inert alloy anode has a density of 8.3g/cm3, a spécifie resistivity of 68.9pQ*cm and a melting point of 138rc.
Embodiment 18 parts by weight of Fe métal blocks, 60 parts by weight of Cu metai blocks, 14 parts by weight of Ni and 0.9 parts by weight of Sn métal blocks are molten at first, then 0.1 parts by weight of Al métal blocks are added and sequentially molten, finally, 2 parts by weight of Y métal blocks are added and molten, mlxing is performed, and the mixture is cast to obtain an inert alloy anode 18. The inert alloy anode has a density of 8.3g/cm3, a spécifie resistivity of 68pQ»cm and a melting point of 1360°C,
Embodiment 19 parts by weight of Fe métal blocks, 36 parts by weight of Cu métal blocks, 14.9 parts by weight of NI and 5 parts by weight of Sn métal blocks are molten at first, then 4 parts by weight of Al métal blocks are added and sequentially molten, finally, 0.1 parts by weight of Y métal blocks are added and molten, mixing is performed, and the mixture is castto obtain an inert alloy anode 19. The Inert ailoy anode has a denslty of 8.1g/cm3, a spedfic resistivlty of 76.8pQ*cm and a melting point of 1386eC.
Embodiment 20 parts by weight of Fe métal blocks, 38.3 parts by weight of Cu métal blocks, 28 parts by weight of Ni and 0.2 parts by weight of Sn métal blocks are molten at first, then 3.5 parts by weight of Al métal blocks are added and sequentlally moiten, finally, 1 part by weight of Y métal blocks are added and molten, mixing is performed, and the mixture is cast to obtain an inert ailoy anode 20. The inert alioy anode has a denslty of 8.2g/cm3, a spécifie resistivlty of 70pQ'Cm and a melting point of 1365eC.
Embodiment 21 parts by weight of Fe métal blocks, 36.5 parts by weight of Cu métal blocks, 18 parts by weight of Ni and 3 parts by weight of Sn métal blocks are molten at first, then 1.5 parts by weight of Al métal blocks are added and sequentialiy molten, finally, 1 part by weight of Y métal blocks are added and molten, mixing Is performed, and the mixture Is cast to obtain an Inert alioy anode 21. The inert ailoy anode has a density of 8.1g/cm3, a spedfic resistivlty of 76.8pQ*cm and a melting point of 1386*C.
Embodiment 22
24.3 parts by weight of Fe métal blocks, 59 parts by weight of Cu metai blocks, 14 parts by weight of Ni and 0.2 parts by weight of Sn métal blocks are molten at first, then 2 parts by weight of Ai metai blocks are added and sequentialiy molten, finally, 0.5 parts by weight of Y métal blocks are added and molten, mixing Is performed, and the mixture Is cast to obtain an inert alioy anode 22. The inert ailoy anode has a density of 8.22g/cm3, a spedfic resistivlty of 68.2pQ*cm and a meiting point of 1360’C.
In the aforementioned embodiment, 1 part by weight is 10g, and the inert anode ailoy resulted from cas tin g can be In any shape as required.
Embodiment 23
40.01 parts by weight of Fe métal blocks, 35.9 parts by weight of Cu métal blocks and 0.19 parts by weight of Sn métal blocks are molten and then uniformly mlxed under hlgh-speed electromagnetic stim'ng, the mixture is rapldiy cast and then rapidiy cooled at a speed of 20-100*C/s to obtain an Inert alloy anode 23 which Is homogeneous In texture. The Inert alloy anode has a density of 8.2g/cm3, a spécifie resistivity of 61pC«cm and a meiting point of 1400*C.
Embodiment 24 parts by weight of Fe metai biocks, 0.01 parts by weight of Cu métal blocks and 0.01 parts by weight of Sn métal blocks are molten and then uniformly mixed under hlgh-speed electromagnetic stining, the mixture is rapldiy cast and then rapidiy cooled at a speed of 20-100eC/s to obtain an Inert ailoy anode 24 which Is homogeneous In texture. The Inert alloy anode has a denslty of 7.5g/cm3, a spécifie resistivity of 82pO»cm and a meiting point of 1369’C.
Embodiment 25 parts by weight of Fe métal biocks, 25 parts by weight of Cu métal blocks and 0.1 part by weight of Sn métal blocks are molten and then uniformly mixed under hlgh-speed electromagnetic stlrring, the mixture Is rapidiy cast and then rapidiy cooled at a speed of 20-100’C/s to obtain an inert alloy anode 25 which is homogeneous In texture. The Inert alloy anode has a denslty of 7.9g/cm3, a spécifie resistivity of 84μΩ·αη and a meiting point of 1390‘C.
Embodiment 26 parts by weight of Fe métal blocks, 30 parts by weight of Cu métal blocks, 20 parts by weight of Mo and 0.05 parts by weight of Sn métal blocks are molten and then cast to obtain an Inert alioy anode 26. The Inert alloy anode has a density of 8.4g/cm3, a spécifie resistivity of 78pQ*cm and a meiting point of 1370*C.
Embodiment 27
40.01 parts by welght of Fe métal blocks, 35.9 parts by weight of Cu meta! blocks, 70 parts by welght of Ni and 0.01 parts by weight of Sn meta! blocks are molten and then cast to obtain an Inert alloy anode 27. The inert alloy anode has a density of 8.5g/cm3, a spécifie resistivity of 68μΩ·αη and a metting point of 1360eC.
Embodiment 28 parts by weight of Fe meta! blocks, 0.01 parts by weight of Cu métal blocks, 28.1 parts by weight of Ni and 0.19 parts by weight of Sn métal blocks are molten and then cast to obtain an inert alloy anode 28. The Inert alloy anode has a density of 7.7g/cm3, a spécifie resistivity of 76.8μΩ·ετη and a melting point of 1386'C.
Embodiment 29
71.88 parts by weight of Fe métal blocks, 0.01 parts by weight of Cu métal blocks, 28.1 parts by weight of Ni and 0.01 parts by weight of Sn métal blocks are molten and then cast to obtain an inert alloy anode 29. The inert alloy anode has a density of 8.2g/cm3, a spécifie resistivity of 72μΩ·αη and a metting point of 1350’C.
Embodiment 30
40.01 parts by weight of Fe métal biocks, 31.88 parts by weight of Cu meta! blocks, 28.1 parts by weight of Ni and 0.01 parts by weight of Sn métal blocks are molten and then cast to obtain an Inert alloy anode 30. The inert alloy anode has a density of 8.1 g/cm3, a spécifie resistivity of 70pC*cm and a metting point of 1330°C.
Embodiment 31 parts by weight of Fe métal blocks, 0.02 parts by welght of Cu métal blocks, 59.97 parts by weight of Ni and 0.01 parts by weight of Sn métal blocks are molten and then cast to obtain an inert alloy anode 31. The inert alloy anode has a density of 8.2g/cm3, a spécifie resistivity of 73pÙ*cm and a melting point of 1340’C.
Embodiment 32 parts by weight of Fe métal blocks, 4.81 parts by weight of Cu métal blocks, 50 parts by weight of NI and 0.19 parts by weight of Sn métal blocks are molten and then cast to obtain an Inert alloy anode 32. The Inert alloy anode has a denslty of 8.0g/cm3, a spécifie resistivity of 74pÛ*cm and a melting point of 1350’C.
Embodiment 33 parts by weight of Fe métal blocks, 35.9 parts by weight of Cu métal blocks and 0.1 parts by weight of Sn métal blocks are molten at first, then 4 parts by weight of Al métal blocks are added and sequentialiy molten, uniformly mixing is performed under hlgh-speed electromagnetic stirring, and the mixture is rapidly cast and then rapldly cooled to obtain an Inert alloy anode 33. The Inert ailoy anode has a density of 8.1g/cm3, a spécifie resistivity of 68pQ*cm and a melting point of 1370’C.
Embodiment 34
40.01 parts by weight of Fe métal blocks, 27.7 parts by weight of Cu métal blocks, 28.1 parts by weight of Ni and 0.19 parts by weight of Sn métal blocks are molten at first, then 4 parts by weight of Al métal blocks are added and sequentialiy molten, and an Inert alloy anode 34 is obtained by casting. The Inert alloy anode has a density of 8.4g/cm3, a spécifie resistivity of 69pO»cm and a melting point of 1340’C.
Embodiment 35
71.88 parts by weight of Fe métal blocks, 0.005 parts by weight of Cu métal blocks, 28.1 parts by welght of Ni and 0.01 parts by welght of Sn métal biocks are molten at first, then 0.005 parts by welght of Ai métal biocks are added and sequentially molten, and an inert alloy anode 35 is obtained by casting. The Inert alloy anode has a density of 8.15g/cm3, a spécifie resistivity of 69pQ*cm and a melting point of 1369’C.
Embodiment 36
40.01 parts by welght of Fe métal biocks, 31.88 parts by weight of Cu métal biocks, 25.01 parts by weight of Ni and 0.1 parts by welght of Sn métal biocks are molten at first, then 3 parts by weight of Al métal biocks are added and sequentially molten, and an inert alloy anode 36 is obtained by casting. The Inert alloy anode has a density of 8.0g/cm3, a spécifie resistivity of 67.6pQ*cm and a melting point of 1379eC.
Embodiment 37 parts by welght of Fe métal biocks, 31.88 parts by weight of Cu métal biocks and 0.01 parts by weight of Sn métal biocks are molten at first, then 2 parts by weight of Y métal biocks are added and sequentially molten, uniformly mixing Is performed under hlgh-speed electromagnetic stirring, and the mixture is rapidly cast and then rapidly cooled to obtain an inert alloy anode 37. The Inert alloy anode has a density of 8.4g/cm3, a spécifie resistivity of 67pQ*cm and a melting point of 1358'C.
Embodiment 38 parts by weight of Fe métal biocks, 0.01 parts by weight of Cu métal biocks, 59.97 parts by weight of NI and 0.01 parts by weight of Sn métal biocks are molten at first, then 0.01 parts by weight of Y métal biocks are added and sequentially molten, and an inert alloy anode 38 is obtained by casting. The inert alloy anode has a density of 8.1g/cm3, a spécifie resistivity of 70.9ρΩ·αη and a melting point of1375‘C.
Embodiment 39 parts by weight of Fe métal biocks, 31.88 parts by weight of Cu métal blocks and 0.19 parts by weight of Sn métal blocks are molten at first, then, 4 parts by weight of Al meta! blocks are added and sequentially molten, finaliy, 2 parts by weight of Y métal blocks are added and molten, uniform mixing Is performed under hlgh-speed electromagnet stirring, and the mixture is rapldly cast and 5 then rapldly cooled to obtain an Inert alioy anode 39. The inert ailoy anode has a density of 8.3g/cm3, a spécifie resistivity of 68.9pQ»cm and a melting point of 138VC.
Embodiment 40 parts by weight of Fe métal blocks, 25.7 parts by weight of Cu métal blocks, 28.1 parts by weight 10 of Ni and 0.19 parts by weight of Sn meta! blocks are molten at first, then 4 parts by weight of Al métal blocks are added and sequentially molten, finaliy, 2 parts by weight of Y métal blocks are added and molten, mixing is performed, and the mixture is cast to obtain an Inert alioy anode 40.
The Inert alioy anode has a density of 8.3g/cm3, a spécifie resistivity of 68pÛ«cm and a melting point of1360’C.
Embodiment 41
71.88 parts by weight of Fe métal blocks, 0.005 parts by weight of Cu métal blocks, 28.1 parts by weight of NI and 0.01 parts by weight of Sn meta! blocks are molten at first, then, 0.002 parts by weight of Al métal blocks are added and sequentially molten, finaliy, 0.003 parts by weight of Y métal 20 blocks are added and molten, mixing is performed, and the mixture Is cast to obtain an Inert alioy anode 41. The inert alioy anode has a density of 8.1g/cm3, a spécifie resistivity of 76.8pQ*cm and a melting point of 1386’C.
Embodiment 42
36.92 parts by weight of Fe métal blocks, 31.88 parts by weight of Cu métal blocks, 28.1 parts by weight of Ni and 0.1 parts by weight of Sn meta! blocks are molten at first, then 1 part by weight of Al métal blocks are added and sequentially molten, finaliy, 2 parts by weight of Y métal blocks are t8 added and molten, mlxlng ls performed, and the mixture ls cast to obtain an Inert alloy anode 42. The inert alloy anode has a density of 8.2g/cm3, a spécifie reslstivity of 70pfl»cm and a melting point of1365’C.
Embodiment 43
39.81 parts by welght of Fe meta! blocks, 0.01 parts by weight of Cu métal blocks, 59.97 parts by welght of Ni and 0.01 parts by weight of Sn métal blocks are molten at first, then 0.1 parts by welght of Al meta! blocks are added and sequentlally molten, finally, 0.1 parts by welght of Y métal blocks are added and molten, mlxlng ls performed, and the mixture ls cast to obtain an Inert alloy anode 43.
The Inert alloy anode has a denslty of 8.1g/cm3, a spécifie reslstivity of 76.8μΩ·αη and a melting point of 1386’C.
Embodiment 44 parts by welght of Fe métal blocks, 24.4 parts by weight of Cu métal blocks, 29 parts by welght of
NI and 0.1 parts by welght of Sn métal blocks are molten at first, then 1 part by welght of Al métal blocks are added and sequentlally molten, finally, 0.5 parts by weight of Y métal blocks are added and molten, mlxlng ls performed, and the mixture ls cast to obtain an Inert alloy anode 44. The Inert alloy anode has a density of 8.22g/cm3, a spécifie reslstivity of 68.2μΩ·αη and a melting point of 1360’C.
In the aforementioned embodiments 23-44, 1 part by weight is 100g, and the Inert anode alloy resulted from castlng can be In any shape as requlred.
Comparative Exampie
The alloy powders containing 37wt% of Co, 18wt% of Cu, 19wt% of NI, 23wt% of Fe and 3wt% of Ag 25 are subjected to powder métallurgie process to obtain an anode, and before use, an oxide film ls fbrmed on the surface of the métal anode by pre-oxidizatîon at 1000’C to obtain an Inert alloy anode A.
Test Example
The Inert alloy anodes 1-44 and A are each taken as an anode, graphite Is taken as a cathode, the anode and the cathode are vertically inserted Into an electrolytlc cell provided with a corundum liner, 5 and the distance between the anode and the cathode is 3cm. The anode has a current density of
1.OA/cm2 at 760°C, and is electrolyzed for up to 40 hours In an electrolyte havlng the components Including 32wt% of sodium fluoride, 57wt% of alumlnum fluoride, 3wt% of lithium fluoride, 4wt% of potassium fluoride and 4wt% of alumina, and the test results are shown In the Table below:
| Inert Alloy Anode | Cell Voltage (V) | Direct Current Consumption for Per Ton of Alumlnum (kwh) | Purityof Product Aluminum (%) |
| 1 | 3.10 | 10040 | 99.80 |
| 2 | 3.14 | 10170 | 99.81 |
| 3 | 3.22 | 10429 | 99.85 |
| 4 | 3.16 | 10235 | 99.80 |
| 5 | 3.10 | 10040 | 99.85 |
| 6 | 3.39 | 10979 | 99.62 |
| 7 | 3.15 | 10202 | 99.85 |
| 8 | 3.27 | 10591 | 99.85 |
| 9 | 3.18 | 10299 | 99.83 |
| 10 | 3.36 | 10882 | 99.81 |
| 11 | 3.28 | 10623 | 99.80 |
| 12 | 3.40 | 11000 | 99.82 |
| 13 | 3.32 | 10753 | 99.84 |
| 14 | 3.25 | 10526 | 99.82 |
| 15 | 3.12 | 10105 | 99.80 |
| 16 | 3.27 | 10591 | 99.81 |
| 17 | 3.35 | 10850 | 99.83 |
| 18 | 3.38 | 10947 | 99.80 |
| 19 | 3.16 | 10234 | 99,82 |
| 20 | 3.32 | 10753 | 99.83 |
| 21 | 3.10 | 10040 | 99.81 |
| 22 | 3.12 | 10105 | 99.82 |
| 23 | 3.11 | 10040 | 99.80 |
| 24 | 3.13 | 10159 | 99.81 |
| 25 | 3.21 | 10429 | 99.85 |
| 26 | 3.15 | 10236 | 99.80 |
| 27 | 3.11 | 10041 | 99.90 |
| 28 | 3.38 | 10979 | 99.82 |
| 29 | 3.14 | 10202 | 99.85 |
| 30 | 3.26 | 10591 | 99.91 |
| 31 | 3.17 | 10299 | 99.83 |
| 32 | 3.35 | 10879 | 99.81 |
| 33 | 3.27 | 10623 | 99.80 |
| 34 | 3.39 | 11000 | 99.82 |
| 35 | 3.33 | 10753 | 99.84 |
| 36 | 3.25 | 10526 | 99.82 |
| 37 | 3.12 | 10105 | 99.80 |
| 38 | 3.27 | 10591 | 99.81 |
| 39 | 3.35 | 10850 | 99.83 |
| 40 | 3.38 | 10945 | 99.80 |
| 41 | 3.16 | 10234 | 99.82 |
| 42 | 3.32 | 10753 | 99.83 |
| 43 | 3.10 | 10040 | 99.81 |
| 44 | 3.12 | 10110 | 99.82 |
| A | 4.48 | 14510 | 98.35 |
lt can be seen from the test results of the aforementioned embodiments and the comparative exampie that In the process of aluminum electrolysls, the inert alloy anode In the présent invention has a cell voltage much Iower than that of the alloy anode in the comparative example, consequentiy, using the Inert alloy anode In the présent Invention can reduce the power consumptïon In an 5 aluminum electrolysls process remarkabiy, which further reduces energy waste and Iower cost.
Meanwhile, the Inert alloy anode In the présent Invention can be used for produdng aluminum products which meet the hlgh-purity standard, Le. the purity of these aluminum products can be over 99.8, which meets the national primary aluminum standard.
Detalled description has been made to the spécifie contents of the présent invention in the 10 aforementioned embodiments, and it should be understood by those skilled In thls art that modifications and detail variations in any form based upon the présent Invention pertaln to the scope that the présent invention seeks to protect.
Claims (11)
1. An Inert ailoy anode for aluminum electrolysis, containing:
Fe and Cu as primary components;
characterized in that the Inert alloy anode further contains Sn.
2. The inert alloy anode according to claim 1, characterized In that the mass ratio of Fe to Cu to Sn is (23-40): (36-60): (0.2-5) or (40.01-80): (0.01-35.9): (0.01-0.19).
3. The Inert alloy anode according to claim 1 or 2, characterized In that the inert alloy anode further contains NI.
4. The Inert alloy anode according to daim 3, characterized In that the mass ratio of Fe to Cu to Ni to Sn Is (23-40): (36-60): (14-28): (0.2-5) or (40.01-80): (0.01-35.9): (28.1-70): (0.01-0.19).
5. The Inert alloy anode according to daim 3, being composed of Fe, Cu, Ni and Sn, wherein the content of Fe is 23-40wt%, the content of Cu Is 36-60wt%, the content of Ni is 14-28wt% and the content of Sn Is 0.2-5wt%, or the content of Fe Is 40.01-71.88wt%, the content of Cu Is 0.01-31.88wt%, the content of Ni is 28.1-59.97wt% and the content of Sn Is 0.01-0.19wt%.
6. The inert ailoy anode according to any of daims 1-5, further containing Al.
7. The Inert alloy anode according to daim 6, being composed of Fe, Cu, Ni, Sn and Al, wherein the content of Fe Is 23-40wt%, the content of Cu is 36-60wt%, the content of Ni Is 14-28wt%, the content of Al Is more than zéro and less than or equal to 4wt% and the content of Sn is 0.2-5wt%, or the content of Fe Is 40.01-71.88wt%, the content of Cu Is 0.01-31.88wt%, the content of NI Is 28.1-59.97wt%, the content of Al Is more than zéro and less than or equal to 4wt% and the content of Sn is 0.01-0.19wt%.
8. The Inert alloy anode according to any of daims 1-7, further containing Y.
9. The inert alloy anode according to claim 8, being composed of Fe, Cu, NI, Sn, Al and Y, wherein the content of Fe Is 23-40wt%, the content of Cu Is 36-60wt%, the content of NI Is 14-28wt%, the content of Ai is more than zéro and less than or equal to 4wt%, the content of Y Is more than zéro and less than or equal to 2wt% and the content of Sn is 0.2-5wt%, or the content of Fe is 40.01-71.88wt%, the content of Cu Is 0.01-31.88wt%, the content of Ni is 28.1-59.97wt%, the content of Al Is more than zéro and less than or equal to 4wt%, the content of Y Is more than zéro 5 and less than or equal to 2wt% and the content of Sn Is 0.01-0.19wt%.
10. A preparing method of the inert alloy anode according to any of daims 1-9, comprising the following steps:
melting and uniformiy mixing the metals Fe, Cu and Sn, and then rapldly casting and coolïng the mixture to obtain the inert ailoy anode;
10 or, melting the metals Fe, Cu and Sn at first, then adding and melting the métal Al or Y, and uniformiy mixing, or adding and melting the métal Al at first and then adding and melting the métal Y, uniformiy mixing, and rapidly casting and cooling the mixture to obtain the inert alloy anode;
or, melting and mixing the metals Fe, Cu, Ni and Sn and then casting the mixture to obtain the inert alloy anode;
15 or, melting the metals Fe, Cu, Ni and Sn at first, then adding and melting the métal Al or Y, and uniformiy mixing, or adding and melting the métal Al at first, then adding and melting the métal Y, uniformiy mixing, and casting the mixture to obtain the inert alloy anode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188424.6 | 2012-06-11 | ||
| CN201310024019.5 | 2013-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| OA17186A true OA17186A (en) | 2016-04-05 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pawlek | Inert anodes: an update | |
| US4871438A (en) | Cermet anode compositions with high content alloy phase | |
| CA2877591C (en) | Electrolytic cell for aluminum electrolysis and electrolysis process using electrolytic cell | |
| US4871437A (en) | Cermet anode with continuously dispersed alloy phase and process for making | |
| CN103924266B (en) | A kind of method that co-electrodeposition method prepares rare earth gadpolinium alloy | |
| CA2876336C (en) | Inert alloy anode for aluminum electrolysis and preparing method thereof | |
| CN113699560A (en) | Method for preparing metal titanium by soluble anode electrolysis of fluorine-chlorine mixed molten salt system | |
| CN110205652B (en) | Preparation method and application of copper-scandium intermediate alloy | |
| OA17186A (en) | Inert alloy anode used for aluminum electrolysis and preparation method therefor. | |
| CN103484895B (en) | A kind of electrolgtic aluminium inert alloy anode and preparation method thereof | |
| RU2401324C2 (en) | Inert anode to electrolytic production of metals | |
| CN102912382B (en) | A kind of method of electrolytic preparation aluminium-magnesium alloy in fluorochloride molten salt system | |
| CN112267131B (en) | Yttrium-nickel alloy and preparation method and application thereof | |
| JP2004360025A (en) | Method for manufacturing metallic titanium with direct electrolysis method | |
| CN108866579B (en) | Electrolytic preparation of Al4Method and device for W alloy material | |
| CN103938080B (en) | Electrolgtic aluminium inert alloy anode and preparation method thereof | |
| AU2006260791B2 (en) | Electrode | |
| CN106591889A (en) | Preparation method for magnalium | |
| AU2804689A (en) | Cermet anode with continuously dispersed alloy phase and process for making | |
| Marschman et al. | Cermet anode with continuously dispersed alloy phase and process for making | |
| CN113957245A (en) | Aluminothermic reduction method for preparing aluminum-scandium alloy | |
| CN107130263A (en) | The preparation method of magnesium metal | |
| CN107059060A (en) | The preparation method of magnesium copper alloy | |
| OA17184A (en) | Electrolysis tank used for aluminum electrolysis and electrolysis process using the electrolyzer. |