| abstract |
The invention makes it possible to improve the quality of the concentrate when enriching finely disseminated phosphate ores by preventing the formation of focalized particles and to reduce energy. gozatraty. The ore is dried, crushed and ground to dry. Then the crushed product is fed into the pipeline-3, the air in which comes from the power supply fan 4. A turbulent dust-gas flow is formed in the pipeline 3 and a charging device 5 is installed. Partri-electrification of particles takes place in the pipeline and the charging device. The dust-gas flow enters the pneumo-electric separator 6, the electrodes 7 of which are installed at a certain angle to the vertical, forming a separation zone of confused form, which ensures laminarization of the flow. At the same time, the speed of movement of particles in the separation zone and the intensity of the electrostatic field increase in the direction of movement of the flow of particles. In the separator 6, the dust-gas stream is separated. A part of the stream forms a concentric stream, and the other - a tail stream. Both streams are directed to cyclones 9 and bag filters in which concentrate and tailings are separated. The purified air enters the fan 4 and the separator 6, 1 sludge. C & (L with O 00 OS with Hbssgg Concentrate l1 |