Separation method of fe element in aluminum alloy waste
A separation method and technology for aluminum alloy, applied in the field of aluminum alloy melt purification, can solve the problems of difficult Fe-containing phase, difficult separation, large size difference of Fe-containing phase, etc.
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Embodiment 1
[0039] Taking the aluminum alloy scrap with Fe impurity element as the mass ratio of 0.2% as an example, carry out the aforementioned separation method, wherein the specific composition mass percentage of the alloy is: Si 7%, Mg 0.6%, Cu≤0.3; Fe 0.2%; Zn≤0.3 %; Ti≤0.2%; the rest is Al. The separation method includes the following steps:
[0040] Step 1: After determining the content of Fe impurity elements in the aluminum alloy scrap, melt the regenerated aluminum alloy scrap in a resistance furnace, control the temperature of the melt at 700°C, and then according to the content of Fe element of 0.2%, according to Mn (wt%) / Fe (wt.%) mass ratio is 1.5, Cr (wt.%) / Fe (wt%) mass ratio is 1.7 Add Mn and Cr elements to the melt.
[0041] Step 2: After all the Mn and Cr elements to be added are melted, keep the alloy melt at 100°C above the liquidus line for 15 minutes;
[0042] Step 3: After the heat preservation is completed, add 0.2% V to the melt, and then continue the heat pr...
Embodiment 2
[0056] Taking aluminum alloy waste with a mass ratio of Fe impurity elements of 0.5% as an example, the aforementioned separation method is carried out, wherein the specific composition mass percentages of the alloy are: Si 9%, Mg≤0.1%, Cu≤0.3; Fe0.5%; Zn≤0.3%; Ti≤0.2%; the rest is Al. The separation method includes the following steps:
[0057] Step 1: After determining the content of Fe impurity elements, the regenerated aluminum alloy scrap is smelted in a resistance furnace, and the temperature of the melt is controlled at 740° C., and then according to the content of Fe element of 0.5%, according to Mn(wt%) / Fe(wt%) .%) mass ratio of 2.5, Cr (wt.%) / Fe (wt%) mass ratio of 2 to add Mn and Cr elements to the melt.
[0058] Step 2: After all the Mn and Cr elements to be added are melted, keep the alloy melt at 120°C above the liquidus line for 30 minutes;
[0059] Step 3: Add 0.4% V to the melt after the heat preservation is completed, and then continue the heat preservation...
Embodiment 3
[0074] Taking the aluminum alloy scrap with Fe impurity element as the mass ratio of 1% as an example, the aforementioned separation method is carried out, wherein the specific composition mass percentage of the alloy is: Si 11%, Mg 0.3%, Cu≤0.3, Fe 1%, Zn≤0.3 %, Ti≤0.2%, and the rest is Al. The separation method includes the following steps:
[0075] Step 1: After determining the content of Fe impurity elements, the secondary aluminum alloy scrap is smelted in a resistance furnace, and the temperature of the melt is controlled at 820° C., and then according to the content of Fe element of 1%, according to Mn(wt%) / Fe(wt%) .%) mass ratio is 3, Cr(wt.%) / Fe(wt%) mass ratio is 2.5, Mn(wt.%) / Cr(wt%) mass ratio is 3, add Mn and Cr elements to the melt .
[0076] Step 2: After all the Mn and Cr elements to be added are melted, keep the alloy melt at 130°C above the liquidus line for 45 minutes;
[0077] Step 3: After the heat preservation is completed, add 0.5% V to the melt, and ...
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