FRALCO DEEP BED FILTER

 

Aluminium alloys need to meet ever more stringentquality requirements, particularly for beverage cans, foils, fine wires,lithographic sheets and bright trims. In fact, inclusions lead to problems whenmetal is produced to ever decreasing thicknesses approaching those of theinclusion size or when surface quality is paramount.

 

The FRALCO Deep Bed Filter consists of aninsulated box containing layers of carefully sized alumina balls through whichmolten aluminium flows from top to bottom. The filtering area, or bed, is sizedas a function of metal flow rates

 

Advantages

 

Metal QualityImprovement

 

Inclusion removal efficiency higher than 90%.

 

LiMCA and PoDFA analyses show best quality requirements consistently achieved with DBF.

 

Different ball sizes and variable layers  allow custom quality requirements.

 

Excellent constancy and repeatability of results

 

Productivity Environment

 

Preheat station permits quick change of filter box to avoid downtime.

 

Large volumes can be treated before cleaning of filter boxes is required.

 

Flow rates of up to 90t/h can be processed.

 

Box design adapts to casting station layout.

 

Used for applications which are critical in terms of quality.

 

Other Parts of theEquipment

 

Electrical holding lid: used when the box is operating to maintain the melt at the right temperature.

 

Preheating roof: used after bed rebuilding to prepare the box for filtering by removing its moisture content; reduces thermal shocks when put into contact with molten metal.

 

Dumping stand: used to get rid of the out of life  media; provides seat to the box for the overhead crane to tilt it.

 

Module    cvapcity   Static metal（KG）   Dimension    

 

MDBF-5    8t/h    470    1823 x 1770 x 1950 mm    

 

MDBF-10    10t/h    600    2030 x 1770 x 1950 mm    

 

MDBF-15    15t/h    800    2330 x 1770 x 1950 mm    

 

MDBF-20    20t/h    1150     2440 x 2140 x 1950mm    

 

MDBF-25    20t/h    1300    2500 x 2100 x 1950mm    

 

MDBF-30    30t/h    1400    2540 x 2240 x 2000mm    

 

MDBF-35    35t/h    1680     2770 x 2400 x 2000mm    

 

MDBF-40    40t/h    1850    2870 x3000x 2000mm    

 

MDBF-55    60t/h    3030    2980 x 3200 x 2320mm    

 

MDBF-90    90t/h    4950     3000 x4100 x 2320 mm