Operative control unit UOK-2 for checking of the intensity and kinetic features of diamonds and associate minerals luminescence is designed to determine the numerical values of luminescence features used in XRF sorters by Bourevestnik, Inc. in the course of sorting diamonds and associate luminescent minerals. Accumulation, backup storage, analysis and graphical presentation of data arrays are carried out. The features obtained can be used for the following:
• to analyze the preparability of diamond-containing materials by deposits and in the course of mining concrete deposits;
• for optimum choice of sorting features put into sorters;
• to control the operation of luminescent sorters.
The UOK-2 operation concept is based on the use of diamonds’ property of luminescence under X-ray impact and on the difference of those properties with diamonds and associate luminescent minerals. Option to simultaneously define the features when a luminescent object is detected, both from the radiation side and from the side opposite to radiation is implemented. The data obtained with the application of UOK-2 shall serve as a basis for upgrading XRF sorters as well as for upgrading enrichment process diagrams for diamond-containing materials.
UOK-2 includes a measurement unit (MU), a control and registration unit (CRU), and a PC with special software.
|Material to be processed||Dry, clean from clay and slurries, dust-free, classified (contents of the main class – 85% minimum)|
|Material grain size fraction||– 6 + 3 mm in automated feed mode; to 12 mm with manual loading.|
|Material supply and transportation system||Grain-by-grain type. Cup-type vibrofeeder with software-adjustable capacity – a turnaround device with 4 cells.|
|Throughput||To 1200 samples/hr.|
|number of X-ray tubes||1 |
Exposure from top, in the cell.
|mode of radiation||Pulse type (pulse duration – 0.5 ms).|
|anode voltage, anode current||from 10 to 30 kW; from 3 to 10 mA|
|Two-sided material luminescence detection. |
Analogue-to-digital detection system.
|luminescent signals’ receivers||photomultiplier tubes (PMT); complete with fiber optic light cables|
|number of detectors, detection channels||2|
|Sampling in sorting mode||Piece by piece, with one or several parameters. Actuator – on the stepper motor.|
|Automation||Programmed selection of RT and PHM modes, sensitivity. Programmed control of feed and sampling. Failure indication|
|Electric power supply||1 phase; (220±22) V; (50±1) Hz|
|Power consumption||200 VA max.|
|Water and compressed air consumption||Not required|
|Overall dimensions (L×W×H), mass:|
|MU||700×470×590 mm; 130 kg|
|CRU||445×490×280 mm; 15 kg|
|Ambient air temperature||from + 10°С to + 35°С|
|Relative humidity (at + 25 °С)||80% max.|
|Protection against X-rays||Meets Radiation Safety Standard RSS-99. Certificate of Russian Federal Service for Consumer Rights Protection and Human Welfare is provided.|