SS POWDER


Hot Polymer Filtration

Because of its unique shape and particle sizes, shattered metal can provide filtration characteristics unlike any other media. Optimum spin pack performance can be achieved through the proper selection of powder size, alloy and bed depth. Careful consideration must also be given to the companion filter media used to ensure that each media compliments the metal powder and contributes to the overall performance of the spin pack.

Metal powder selection

Shattered metal powder is most often used in polyester and nylon applications where the shearing of gels is critical. This gel removal is made possible by the near razor-sharp edges and high degree of tortuosity of the powder. The powder also serves as a pack body volume reducer to limit polymer residence time and the risk of polymer degradation.

The main features for a cost-effective quality filter media are:

  • High porosity maintained during filtration cycle
  • Large active surface area
  • No chemical reaction with the polymer

The powder solution fulfils all the above requirements.

Typical physical properties

Size 

micron

Size


mesh

Apparent 
Density

g/cm3

      Tap

   Density

     g/cm3

Porosity


%

45-90

170/325

2.7

3.5

55

90-125

120/170

2.3

3.1

58

125-180

120/80

2.2

3.0

61

180-250

60/80

2.1

2.8

64

250-355

45/60

2.0

2.6

66

355-500

35/45

1.8

2.2

71

500-850

20/35

1.8

2.1

73

850-2000

10/20

1.6

1.9

75

 

Alternative cuts

 

150-300

50/100

 1.7

2.1

73

180-425

40/80

1.7

2.0

74

250-600

30/60

1.6

1.9

74

300-700

25/35

1.6

1.8

75

700-2000

10/25

1.5

1.8

76

 

M/14, Sangeetsarita Complex, Nr. Amidhara Wadi Road, New Rader Adajan, Surat-395009. Gujarat. India. shree.neelkanth@yahoo.co.in