Products: Portable X-ray luminescence sorters
POLUS-M X-Ray Sorter
Brochure POLUS-M
The POLUS-M sorter is designated for the re-treatment of diamondiferous concentrate with grain size - 5 + 2, - 2 + 1, and -1 + 0.5 mm, afield, with the objective to carry out geological exploration of diamond deposits.

The sorter's operation concept is based on the use of diamonds' property of luminescent under X-ray impact and on the difference of those properties with diamonds and associate luminescent minerals. This is the implementation of the mode conditionally labeled as "luminescent and absorption", when the X-ray tube and luminescent receptors are located on both sides of the material flow. Herein, the effect of difference in X-ray absorption by diamonds and associate luminescent minerals is used.

The sorter includes a sorting machine (SM) and an automated control rack (ACR).

Material to be processed Dry, thoroughly deducted, classified (contents of main class 85% minimum)
Material grain size classes - 5 + 2 mm
- 2 + 1 mm
- 1 + 0.5 mm
Material feed and transportation system Flow type, single-stream, single-pass type Loading hopper for manual loading - shaking feeder - a shaping slope chute - adjustable outer divider plate (concentrate-tailing) - concentrate and tailing channels with concentrate and tailing tanks.
Only single layer feed of material to the analysis area is allowed, with chute feed index as 50 to 80%.
Throuput rates 100 kg/hr (- 5 + 2 mm)
50 kg/hr (- 2 + 1 mm)
15 kg/hr (- 1 + 0.5 mm)
number of tubes
mode of radiation
anode voltage
anode current
Pulse type (pulse length - 0.4 ms; pulse period - 2.4 ms).
30 kV max.
10 mA
Luminescent signals' receivers
number of receivers
detection channels
Single-sided material luminescent detection.
Photomultipliers (PHM)
Analogue-to-digital detection system; options include operation both in amplitude-time mode and in special mode, increased selectivity, using kinetic features for luminescent (extra selection effect is ensured by luminescent-absorption analysis mode).
Ejection Mechanical type. Metal blade with solenoid drive.
Recovery Min. 98% (- 5 + 2 mm)
96% (- 2 + 1 mm)
90% (- 1 + 0.5 mm)
Outward flow of material per one splitter (with maximum capacity) Max. 2.2 g (- 6 + 3 mm)
1.7 (- 3 + 1)
0.5 g (- 1 + 0.5 mm)
Extra option (supplied after a special order): Protection system against unauthorized access to SM, material
Checking of main systems prior to start of material feed and in the course of operation (material feed is stopped if fault is detected) Sensitivity Failure indication.
Power supply 300 VA max.
X-ray tube cooling Air cooling
Overall dimensions (LxWxH), mass (net, stowage boxes not included)
Control and detection unit (CDU)

685×320×680 mm, 48 kg;
680×250×280 mm, 10 kg
Operation conditions:
ambient air temperature
From + 5°С to + 45°С.
Relative humidity (at ambient air temperature + 25°С) to 80%