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February 6, 2012
 


Leonid P. PILINEVICH
Leonid P. PILINEVICH
Head of the department, Doctor of Technical Sciences, Knight of the medal "Frantsisk Skoryna"

DEPARTMENT OF POROUS MATERIALS

         The main direction of research works of the department is the development and production of porous permeable materials and products on their base to filtrate liquids, gases, polymer melts, metals; to silence noises, to use for a cappillary transport; for powder dispensers of liquids and gases; for flame arresters and etc.


Main directions of fundamental investigations:

  • development of scientific basis of production of porous permeable materials with an ordered structure being obtained by powder metallurgy methods;
  • development of scientific principles to control the processes of heat and mass transfer, filtration, capillary transport and catalysis in porous permeable materials.

          The department consists of 4 research laboratories.

      - Research laboratory of high porous materials;
      - Research laboratory of filtering materials;
      - Research laboratory of processes and equipment of filtration and separation;
      - Research laroratory of capillary-porous materials.

         As of 01.01.2005 total employment of the department is 45 persons, including 1 Doctor of Sciences and 10 Candidates of Technical Sciences.


RESEARCH LABORATORY OF PROCESSES AND EQUIPMENT OF FILTRATION AND SEPARATION

Head of the laboratory is Leonid P. PILINEVICH
          Main directions of research works of the laboratory:

  • development of processes, materials and equipment for liquids and gas cleaning and separation of multiphase mediums.
  • development and manufacturing of grinding powders and polishing pastes on the base of superhard materials and technical ceramics.
  • development and manufacturing of porous implants from a spongy titanium powder, composite titanium implants to replace vertebras of body and tools to place them.
  • development of methods and devices for classification of disperse materials.
  • development of methods and devices to control the properties of porous permeable materials.

          Products being developed and manufactured in the laboratory are the following:


1. Filters for gas and liquids cleaning
bronze filtering element
a)
 general view of the filter
b)
     Filters for a fine purification of transformer oils and liquids of the hydrogear: bronze filtering element (a); general view of the filter (b)
Equipment for the filtration of liquids with a continuous evacuation of sediment in the field of centrifuge forces
a)
 general view
b)
      Equipment for the filtration of liquids with a continuous evacuation of sediment in the field of centrifuge forces is designed to purify very polluted technical liquids (lubricant-coolant, washing solutions; motor-, transmission and quenching oils, service water, etc.), liquid foodstuffs (fruit and vegetable juices, wine material, beer, beverage, milk, vegetable oil and etc.) from hard and gel particles, for concentration and ho-mogenization of suspensions (paints on water, oil and polyester bases, sediments of chemical and biochemical equipment etc.)
Filters for cleaning technical and potable water
a)
 Filters for cleaning technical and potable water
b)
      Filters for cleaning technical and potable water from sand particles, salt, coagulated corrosion products and etc. (a); for cleaning of technical and potable water, for protection of water supply equipment against damages, for fine cleaning of tech-nological liquids and steam energetic equipment condensate from corrosion products (b)
general view
a)
 schema
b)
      Moisture and oil separation filters for cleaning of compressed gases from water steams and drops, from oil aerosols, wear and corrosion products of pipelines, atmospheric dust (dew point -5oC, fineness of purificationis up to 5-10mkm): general view (a), schema (b)

2. Porous dispersers of air, ozone and oxygen in liquids
tubular
a)
 disk-shaped
b)
      Porous dispersers being manufactured by pressing and sintering of a titanium powder are designed for the dispersion of ozone, oxygen and other technological gases in mobile cleaning equipment of a potable water, barbotage of galvanic bathes and electrochemical equipment, in laboratory chemical reactors and fermenters. Porous dispersers being manufactured by pressing and sintering of a titanium powder: tubular (a); disk-shaped (b)

3. Porous sound reducers and fire barriers
Porous sound reducers and fire barriers
      Porous sound reducers and fire barriers from powders and fibers of metals and polymers are designed for an active reduction of aerodynamic sound of a large range, produced by pressed gas (air) flows in systems of pneumoautomatics, in drying and refrigerator equipment

4. Porous implants from spongy titanium powder
general view of implants
a)
 implant with osseous tissue
b)
tool to place implants
c)
      Porous biocompatible implants from a spongy titanium powder to replace affected vertebras corps: a - general view of implants; b - implant with osseous tissue; c - tool to place implants

5. Porous elements with pores sizes being changed by section
from bronze powder
a)
 from bronze powder
b)
 from nickel powder
c)
 from powder of a corrosion resistant steel
d)
      Structures of porous elements with a porous anisotropy: à, b - from bronze powder; c - from nickel powder; d - from powder of a corrosion resistant steel. They have a high permeability at a given pore size (fineness of purification)

6. Abrasive powders and pastes

abrasive particles
a)
 paste tube
b)
      They are used for grinding and finishing treatment of precision products such as watch and device stones, pressing forms, measuring tools, plunger pairs of different equipment; for polishing of optical system parts, for manufacturing precision mechanics devices, tools manufacturing, stomatology. Structure of abrasive particles (a) and general view of paste tube (b)

7. Equipment for grinding of disperse materials

8. Equipment for classification of disperse materials
Vortical mill
a)
 device of classification materials
a)
 device of classification materials
b)
      Vortical mill. is designed for grinding of hard and superhard materials to obtain a fine disperse material of food raw materials and other up to particles' size of 0,5 - 20 mkm. Mills exclude the pollution of ready product by milling chamber material.
Equipment for classification of disperse materials: device for classification of high disperse materials by the method of hydrodynamic filtration (a) and by dry screening on vibration stand (b)


        The laboratory has, as separate subdivision, the laboratory of testing of porous and disperse materials (LTPDM), which corresponds to the demands of the accreditation system of examination and testing and it is accredited at independence and technical competence.
N p/p
Grade
Device
Made by
Designed for
Performance
1
Sedigraf 5100
X-ray analyzer of pores size
"Micrometritics" (USA)
Analyze of composition granulometriqueà (size of pores) of powders.
from 300 mkm to 0,1 mkm
2
1320
Autopicknometer
"Micrometritics" (USA)
Ànalyze of real powders density
All intervals
3
Aqusorb 2100 D
Analyzer of specific surface
"Micrometritics" (USA)
Ànalyze of powders and porous materials specific surface
from 0,01m2/g -without limits
4
Porometer-1
Stand for determination of pores size and of coefficient of permeability
PMI
Ànalyze of pores size and of coefficient of permeability of porous materials
Pores size from 1 to 300 mkm; permeability - (3-2000)·10-3 m3/sm2 at overfall 0,6 ÌPà