You are here: > Home > News > >

The Knowledge Before Casting Ingots

Because in the cell in the Friends of liquid aluminum many impurities, it must filtration before casting ingot.
 
It is reported that common methods include:
 
First, solvent purification method is to use a solvent added to the solution; the solvent has a low density, active, strong adsorption ability.
 
Second. Gas purification, commonly chlorine, nitrogen, chlorine or nitrogen mixed gas is a major aluminum purification method.
 
(1) Chlorine purification. Through the molten aluminum to generate a lot of fine bubbles of chlorine gas, sufficient mixing in the molten aluminum, the hydrogen dissolved therein, as well as some mechanical inclusions can be adsorbed on the small bubbles.
 
(2) Nitrogen purges method. Because of toxic chlorine gas, and high cost, so there has been purged with nitrogen. Use alumina balls (418mm) for the filter medium. N2 passed directly into the molten aluminum inside. Continuous purification of molten aluminum into the furnace through the filter layer of alumina balls, and by flushing with nitrogen, then liquid aluminum nonmetallic inclusions and hydrogen to remove dissolved, and then continuously discharged, so that a uniform distribution of fine nitrogen bubbles play a role in the purification of molten aluminum being treated.
 
(3) Mixed gas purification method. Using a mixture of chlorine gas and nitrogen gas to purify molten aluminum, its role is on the one hand and separating off hydrogen oxides, on the other hand remove some aluminum metal impurities (e.g. magnesium), commonly used in the composition is 90% nitrogen + 10% chlorine . There is also a 10% chlorine dioxide + 10% + 80% nitrogen. Thus better, make good diffusion of chlorine dioxide and nitrogen, the operating time can be shortened. Enterprises should be based on actual needs, select the appropriate cleaning methods.

 Aluminum Sheet

Feedback

Name:
Email:
Tel.Fax:
Inquiry:
 
Other Products
8000 Series Aluminium coil (8011/8021/8079)
8000 Series Aluminium coil (8011/8021/8079)
  1. 8000 series aluminium coil made in china including 8011 aluminium coil,8079 aluminium coil,8021 aluminium coil,mainly used in food packaging,cable packaging,alum...
1000 Series Aluminium coil Alloy:1050/1060/1070/1100/1200 Temper:HO,H14,H24,H16,H18,H22,H26
1000 Series Aluminium coil Alloy:1050/1060/1070/1100/1200 Temper:HO,H14,H24,H16,H18,H22,H26
  1. 1000 Series aluminium coil made in China Including :1050 aluminium coil,1060 aluminium coil,1070 aluminium coil, 1080 aluminium coil, 1100 aluminium coil,1235 al...
Alcobendas aluminum perforated wall cladding panel
Alcobendas aluminum perforated wall cladding panel
  1. Aluminum perforated metal mesh is widely used as decorative mesh. This aluminum perforated metal mesh also can be used in building wall power station, factory su...
Mirror Finish Anodized Aluminum Sheet
Mirror Finish Anodized Aluminum Sheet
  1. Anodized mirror aluminum (bright aluminum, specula aluminum) made in China is one kind of aluminum with bright surface as mirror.Used in Lamps and lanterns,Solar...