Development, manufacture and supply of equipment for producing metal nanopowders using the method of electric spark dispersion of metal.
The method is based on the melting and splashing of the surface of metal granules placed in a liquid medium under the influence of pulsed currents supplied from a high-voltage source, followed by condensation of the dispersion products. Depending on the chemical composition of the granules and the environment in which the process is carried out, metal nanopowders, oxides, hydroxides and metal carbides can be produced.
The study of the process made it possible to develop an installation for producing nanopowders using the EDM method - “UEDM” (TU 27.90.11-003-80064280-2022 “Installation for electric spark dispersion of metal granules UEDM”).
Under the influence of current pulses supplied to the electrodes from the power source, there is an electrospark dispersion of metal granules placed in a dispersing cell located in the rector filled with water.
As a result of erosion of metal granules, thin-dispersed powders are formed. The resulting particles are washed out of the dispersing cell and deposited at the bottom of the reactor.
The installation consists of a control panel, a power source and a technological module:
| Parameter | Meaning |
|---|---|
| Dimensions* | 650×250×800 mm |
| Weight* | 50 kg |
| Parameter | Meaning |
|---|---|
| Electrical supply | 3 phases, ~380/220 ±10% V, 50 Hz |
| Power consumption | up to 12 kVt |
| Mode of operation | periodic |
| Work voltage | 900 V |
| Pulse repetition rate | 200-1000 Hz |
| Dimensions* | 650×540×1025 mm |
| Weight* | 150 kg |
| Parameter | Meaning |
|---|---|
| Working environment | water, dielectric fluids |
| Starting raw materials ** | metal granules d ≈ 3 mm, l ≈ 6 - 8 mm |
| Maximum load | up to 20 kg*** |
| Maximum performance | up to 1500 g/h*** |
| Dimensions* | 1910×800×2000 mm |
| Weight* | 250 kg |
* - dimensions and installation weight can be changed
** - can be chosen for the requirements of the customer
*** - depending on the material of the produced nanopowders
