Department of power plant thermogas dynamics
Head of department – D.Sc., Professor Hennadii O. Strelnykov
| Key specifications | |
| Test room dimensions, m | 6×6×8 |
| USI-20 overall dimensions, m | 2×1,5×3,5 |
| Power consumption, kW | 2,5 |
| Compressed air flow rate at 0.6 MPa, kg/s | 0,5 |
| End-product capacity, kg/h | 20 |
| Air temperature at the milling chamber inlet, °К | 290…1100 |
| Starting particle size, mm | less than 3,5 |
| End-product particle size, μm | down to 5 |
| Test data measurement and processing system | PC- and ADC-based |
Description
The bench serves to study gas-jet grinding of various loose materials. The USI-20 bench is a gas-jet grinder, which comprises a loading hopper, a milling chamber, an energy carrier feed and heating system, a fan, a sizer, and an end-product unloading hopper.
The bench is fed from a stationary compressor. In experiments, cold high-pressure air (up to 0.6 MPa) is used. The air fed to the bench can be heated using a special heat exchanger that provides the purity of the energy carrier.
The bench is equipped with a measuring system to monitor the key grinding parameters: the pressure, the temperature, the air flow rate, and the sizer speed. An acoustic monitoring system has been developed and put into operation.
Capabilities
- The parameter measurement system makes possible a wide range of investigations
- The bench components are easy to upgrade to try out grinding technologies for various materials.
Advantages
- Various loose materials are ground to fine and superfine powders;
- No impurities are introduced in grinding;
- The self-contained compressor permits long-term tests;
- Various systems for process parameter and acoustic parameter measurement.
Use
The bench is widely used in investigations and tryout of gas-jet grinding technologies for various loose materials. Using the bench, recommendations are worked out on the choice of optimum regimes of material grinding and disintegration with the aim to reveal material properties and develop new technologies in construction, mining, metal manufacture, the chemical industry, the pharmaceutical industry, and other sectors of the national economy.
| OFFICE ADDRESS: | Institute of Technical Mechanics , 15 Leshko-Popelya St., Dnipro 49005, Ukraine |
| PHONE NUMBER: | +38-056-372-06-45 |
| E-MAIL: | office.itm@nas.gov.ua |
