阅读说明：本技术 铝纯化 (Aluminium purification ) 是由 蔡彪 于 2019-07-12 设计创作，主要内容包括：用于从铝合金分离铁的方法包括：提供处于第一温度的铝合金的第一区域,在该第一温度所述铝合金部分熔化并且其内的任何含铁粒子完全熔化；并且提供处于第二温度的所述合金的第二区域,在该第二温度所述铝合金完全熔化,使得在所述第一区域和第二区域之间产生温度梯度。通过向所述合金施加静态均匀磁场,并且将所述温度梯度和磁场保持一段时间,可以降低所述第一区域和/或第二区域的铁含量。(A method for separating iron from an aluminum alloy comprising: providing a first region of an aluminum alloy at a first temperature at which the aluminum alloy partially melts and any ferrous particles therein completely melt; and providing a second region of the alloy at a second temperature at which the aluminum alloy is fully melted such that a temperature gradient is created between the first and second regions. The iron content of the first and/or second region may be reduced by applying a static uniform magnetic field to the alloy and maintaining the temperature gradient and magnetic field for a period of time.)

1. A method for separating iron from an aluminum alloy, the method comprising:

providing a first region of an aluminum alloy at a first temperature at which the aluminum alloy partially melts and any ferrous particles therein completely melt, and providing a second region of the alloy at a second temperature at which the aluminum alloy completely melts such that a temperature gradient is created between the first region and the second region,

applying a static uniform magnetic field to the alloy; and

maintaining the temperature gradient and the magnetic field for a period of time sufficient to reduce the iron content of the first and/or second region below a predetermined level.

2. The method of claim 1, wherein the first temperature is 450 ℃ to 650 ℃.

3. The method of claim 1 or claim 2, wherein the second temperature is from 500 ℃ to 700 ℃.

4. A method according to any one of claims 1 to 3, wherein the magnetic field strength is from 0.1 to 16T.

5. A method according to any preceding claim, wherein the alloy is heated to the first and second temperatures and then the heating and magnetic field are maintained together for a period of time sufficient to reduce the iron content of the first and/or second region.

6. The method of claim 5, wherein the heating and magnetic field are maintained for a period of 10 minutes to 10 hours.

7. The method of any one of claims 1 to 4, wherein the alloy is completely melted and then cooled until the first region reaches the first temperature and the second region reaches the second temperature, and wherein the magnetic field is applied while cooling the alloy.

8. The method of claim 7, wherein the alloy is cooled at a controlled rate.

9. The method of any preceding claim, wherein application of the magnetic field results in formation of an iron-rich layer, the method further comprising separating the iron-rich layer from the alloy.

10. The method of claim 9, wherein the iron-rich layer is separated from the alloy while the iron-rich layer is in liquid form, optionally by pouring, scooping, or drawing off.

11. The method of claim 9, wherein the method further comprises solidifying the alloy prior to separating the iron-rich layer from the alloy.

12. The method of claim 11, wherein the iron-rich layer is separated from the alloy by machining.

13. A method according to any preceding claim, wherein the temperature gradient is formed by at least two heaters, one heater heating the first region of the alloy to the first temperature and the other heater heating the second region of the alloy to the second temperature.

14. An apparatus for separating iron from an aluminum alloy, the apparatus comprising:

at least one heater arranged to heat the aluminium alloy in the first zone to a first temperature at which the alloy partially melts and to heat the alloy in the second zone to a second temperature at which the aluminium alloy is fully melted; and

a magnetic field generator for generating a uniform magnetic field across the alloy.

15. The apparatus of claim 14, wherein the magnetic field generator comprises a pair of permanent magnets.

16. Apparatus according to claim 14 or 15, wherein the apparatus comprises a first heater arranged to heat alloy in the first region and a second heater arranged to heat alloy in the second region.

17. The apparatus of any one of claims 14 to 16, further comprising a vessel for containing molten alloy.

18. The apparatus of any one of claims 14 to 17, further comprising a thermal insulation layer disposed between the heater and the magnetic field generator.

19. The apparatus of claim 18, further comprising a water cooled plate disposed between the thermal shield and the magnetic field generator.