USI-20 BENCH (gas-jet grinder)

Department of power plant thermogas dynamics

Head of department – D.Sc., Professor Hennadii O. Strelnykov

Key specifications
Test room dimensions, m6×6×8
USI-20 overall dimensions, m2×1,5×3,5
Power consumption, kW2,5
Compressed air flow rate at 0.6 MPa, kg/s0,5
End-product capacity, kg/h20
Air temperature at the milling chamber inlet, °К290…1100
Starting particle size, mmless than 3,5
End-product particle size, μmdown to 5
Test data measurement and processing systemPC- 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

  1. The parameter measurement system makes possible a wide range of investigations
  2. 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

The “Technical Mechanics” Journal

Frequency: 4 times a year

Languages: Ukrainian, English

Editor-in-Chief: Oleg V. Pylypenko, Academician of the National Academy of Sciences of Ukraine

http://journal-itm.dp.ua/index.html