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Hot mix asphalt automatic closed loop extractor PAVELAB50

Asphalt analyzer for separation and extraction of bitumen, filler and aggregates by use of solvent

ASTM D2172 | EN 12697-1
Main features
  • Fully automatic test cycle:
    • Washing of the asphalt sample (up to 3.5 kg) with solvent and ultrasonic motion, with simultaneous heating and rotation of the drum lined with screening mesh
    • High speed extraction centrifuge for separation of filler from binder solution
    • Condensation of solvent vapour in a stainless steel tank inlcuding cooling coil
    • Automatic recovery of solvent by a continuous distillation process
    • Easy binder recovery for further tests such as penetration, softening point, etc.
    • Fast connection for rotary evaporator flask available as option
    • ‚ÄčExtraction time reduced to approx 55 minutes (including drying)
  • No toxic fumes in the laboratory, conforming to latest anti-pollution requirements
  • 7" touch screen swinging panel
  • Version incorporating a balance for an accurate measurement of asphalt sample (10 Kg ± 0.1 g) also available
  • High extraction capacity: up to 300 g of filter for each extraction
  • Automatic sample drying after extraction
  • Silent operation

General description
These tests methods are used for quantitative determinations of bitumen in hot-mixed paving mixtures and paving samples for specification acceptance, service evaluation, control and research.
These methods prescribe the solvent or solvents that can be used for the binder extraction and recovery.
The representative bitumen sample can be used to perform other tests such as penetration, softening point, etc.. Aggregates, including filler, are also separated and remain available for sample grading.
We are proposing several models of extraction system, including the Automatic Closed-System Asphalt Analyzer.

Operating principle
The asphalt sample (maximum 3.5 kg) is placed in a washing drum lined with a sinthered multilayer mesh with openings 0.063, 0.075 or 0.090 mm wide and it is fitted into the washing chamber. Bitumen and filler are separated from the sample by washing with solvent and ultrasonic motion. The mixture of filler/bitumen/solvent is then centrifuged and the filler is separated. The aggregates and filler are dried by forced air circulation and the residue of solvent recovered by condensation. 
The remaining bitumen/solvent solution is distilled and separated in two different tanks. Part of the bitumen/solvent solution can be drained off before distillation and connected to a flask for use with a rotary evaporator to recover a bitumen sample for other tests. The clean distilled solvent is recycled for other extractions.
The analyzer shall be connected to a suitable water cooling unit to feed the three different cooling coils of the apparatus (see Accessories).

PAVELAB50 Automatic Closed-System Asphalt Analyzer consists in:
Machine body: steel sheet, powder coated with epoxy resin. Wheel mounted.
Washing chamber: high quality stainless steel fitted with ultrasonic equipent, heating system, driving device for the rotation of the washing drum, valves, connections, etc.
Washing drum (separate accessory): Lined with three layer sinthered, high resistance screening mesh, 0.063 or 0.075 or 0.090 mm opening. This unit includes seating, support and closing ring for the cover. Each model should be fitted with the appropriate cover (see Accessories).
Centrifuge: high speed centrifuge for 120 mm diameter cup, complete with safety switch.
Condenser: Stainless steel tank complete with cooling coil for condensation of solvent vapour during the drying operation.
Forced air circulation pump: for drying aggregate and filler.
Recovery/distillation unit: double chamber, one used as a reservoir. The distillation chamber comprises a base and upper heater providing solvent recovery up to approx. 30 litres/hour, and cooling coils above the chamber incorporated in the cover. Both chambers are fitted with drain valves.
Sampling device for Rotary evaporation: a fast connection for the Rotary evaporator flask for bitumen solution collection is also available. See Accessories 75-PV5X100.
7" Touchscreen control panel: for controlling and operating the machine.
Balance option: for the accurate measurement of asphalt samples model 75-PV50A25 only).
Water cooling system: the machines have to be connected to a suitable water cooling system which is not included and have to be ordered separately. See Accessories.
Safety features: The machines stops immediately if a lack of water, electric motor malfuncions etc. are detected and the reason for the stoppage is shown on the control panel display. The doors are locked when the test is running.

Technical specifications

Maximum sample size: 3.5 kg
Centrifuge rotation speed: 6000 rpm
External cup nominal dimensions: 120 mm x 200 mm h (diameter x height)
Maximum filler capacity: approx. 300 g 
Extraction time (including drying of aggregate and filler): approx. 55 minutes
Solvent used per extraction: approx. 10 liters (recycled)
Power rating: 6 kW (excluding water cooling system)
Overall dimensions: approx. 1400 x 750 x 1500 mm (w x d x h)
Weight: approx. 240 kg 

Ordering info

Two version of the analyzer are proposed: 
  • models 75-PV50A15 and 75-PV50A16 without accessories.
  • models 75-PV50A25 and 75-PV50A26 without accessories but supplied with integrated balance. 
Standard version
75-PV50A15

PAVELAB50 automatic Closed-System Asphalt Analyzer for separation and extraction of bitumen, filler and aggregates from asphalt samples by use of solvents.
380 V, 50 Hz, 3 ph

75-PV50A16
Same as above but 220 V, 60 Hz, 3 ph. 

Version incorporating balance
75-PV50A25
PAVELAB50 automatic Closed-System Asphalt Analyzer for separation and extraction of bitumen, filler and aggregates from asphalt samples by use of solvents. Complete with integrated scale.
380 V, 50 Hz, 3 ph.

75-PV50A26
Same as above but 220 V, 60 Hz, 3ph.

Accessories

Washing drums and closing lid
75-PV50/KIT
kit of accessories complete with:
75-PV5X010 Washing drum 0.063 mm opening
75-PV5X040 Closing lid for washing drums
75-PV5X150 Centrifuge cup, 120 mm dia.
75-PV0005/2 Lining paper for centrifuge cup. Pack of 100.


Alternative washing drum
75-PV5X010 Washing drum 0.063 mm mesh
75-PV5X010/C Washing drum 0.063 mm mesh with traceable certificate of wire mesh opening
75-PV5X020 Washing drum 0.075 mm mesh
75-PV5X020/C Washing drum 0.075 mm mesh with traceable certificate of wire mesh opening
75-PV5X030 Washing drum 0.090 mm mesh
75-PV5X030/C Washing drum 0.090 mm mesh with traceable certificate of wire mesh opening

 
Solvent testing device
75-PV5X110
Testing device to verify the stability of recycled perchlorethylene from the pH value.

75-PV5X120
Solvent stabilizator. 1000 ml bottle. For restabilization of recycled perchlorethylene.


Solvent pump
75-PV5X200
Solvent pumping device for safe solvent filling.


Water cooling system
75-PV5X145
Water cooling system providing water between 5°C and 10°C, with flow rate 10 l/min,  pressure 6 bar. 380 V, 50 Hz, 3 ph.

75-PV5X146
As above but 220 V, 60 Hz, 3 ph.

75-PV5X170
Updgrade with additional electrovalve when using cooling tap water

75-PV5X180
Fast connection for cooling pipes


Centrifuge cup
75-PV5X150
Centrifuge cup, 120mm nominal diameter.

75-PV0005/2 
Lining paper for centrifuge cup. Pack of 100.

75-PV5X160
Device for the extraction of the centrifuge cup.


Connection
75-PV5X100
Fast connection for rotary evaporator flask, for bitumen solution sampling (to be ordered at time of order).


Printer
82-P0172/B
24 column serial printer. External battery charger and batteries included. 110-230 V, 50-60 Hz, 1 ph.