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Scirocco M dry powder feeder
Many dry materials are used dry, either by their end users or in further manufacturing processes. Some materials, such as cements, foodstuffs and starches change with hydration. The particle size of such materials is ideally measured dry.

The Scirocco M dry powder feeder, with its precise control of feed rate and dispersion pressure, accurate to 0.02 bar (0.002 Mpa), delivers reproducibility of sample dispersion and measurement. Its sealed balanced flow air cell ensures the minimum in sample bias and limits environmental exposure

  Dispersion Type
Dry.
 
  Dispersion Mechanism
Particle flow controlled using variable feed-rate vibrating tray.Dispersion achieved by accelerating particles within a compressed air stream, together with particle and wall collisions. Control of dispersive air pressure is provided over a range of 0-4 bar, to a accuracy of +/- 0.02bar.
 
  Operation
Manual operation. SOP operation achieved via software prompts to the user.
 
  Typical Applications
Metal powders, minerals, powder coatings, chemicals, dry food ingredients.
 
  Alternatives
A ceramic venturi is available for the measurement of abrasive materials.
 
   
 

Specification

The Scirocco M dry powder feeder, with its precise control of feed rate and dispersion pressure, assures users of reproducible sample dispersion and measurement.

Dispersion type:
 Dry, with manually controllable airflow pressure and sample feed rate.
 
Modes of operation:
 Manual.
 
Dimensions:   Width: 220 mm.
Height: 290 mm (Including Perspex cover)
Depth: 310 mm.
 
Maximum size of particles:

   Up to 1000 microns dependent on particle shape and density (Mastersizer 2000E).
 

Chemical compatibility

This section lists all materials that come into contact with the sample and dispersant in the normal operation of the unit.

Tray and Venturi:


 316 stainless steel or Ceramic.
 
Sieve and ball bearings:

   316 stainless steel
Sample pipes to cell:

   Tygon
 
Vacuum hose:
   PVC
 
Cell elbow:
   316 stainless steel
 
Cell:
   Glass, 316 stainless steel, Viton
 

 

Installation Details

Voltage:


 240 V, 50 Hz
110 V, 60 Hz.
 
Power Consumption:

   1200 VA.
Compressed air supply:
   Delivery: 64 l/min at 60 psi (7 bar).
Filter: 4 microns, dry and free of oil.
 
Air extraction system:
   Air flow: 35 l/s (minimum rate).
Vacuum: 18.5kpa.
Power consumption: 850 W nominal.
 

 

Vacuum unit

If the vacuum unit is not supplied by Malvern then the chosen vacuum unit must comply to the specifications below.

Characteristic

   Conditions   Value   Units
Continuous Rated output power:

 VMAINS = 100 V to 120 V ac
VMAINS = 200 V to 240 V ac
 		 700 W
Maximum peak output power

   VMAINS = 100 V to 120 V ac
VMAINS = 200V to 240 V ac
   850   W
Airflow:
   With hose - at air cell
 		   41   l/sec
Vacuum:
  
 		   18.5   kPa
Suction power:
   With hose - at air cell
 		   165   W
Sound power level:
   Measured at operators position
 		   <75   dBA

 

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