SU948455A1 - Method and apparatus for hydraulic classification of material - Google Patents

Description

The image of ognosigs to the field of mineral processing and can be used in the mining industry.

There are known methods for the hydraulic classification of minerals, consisting in the separation of material in a stream, the direction of which coincides with the direction of the main forces of forces, and the I hydraulic classifier for implementing this method ij.

The disadvantage of this method and device for carrying it out is fuzzy separation of the material and, consequently, clogging of large particles by small particles, and draining are large, with the clogging of separation products due to the circulating movement of the pulp.

The closest technical solution from izvesgnyh in terms of the function performed and the result achieved is the specialty of hydraulic classification, which consists in loading the pulp, separating the starting material into the same and the light fraction and withdrawing it from the process, and. a hydraulic classifier for implementing the method, including a separation chamber, a loading chute installed in the upper part of the separation chamber, a drain threshold, a drainage chute, a discharge device for

10. heavy fraction 2.

The disadvantage of the known method and the hydraulic classifier is the uneven distribution of the upward flow over the entire section of the apparatus, the large flow of water and 6f the height of the apparatus.

The purpose of the invention is to increase the efficiency of the separation process by reducing water consumption.

Claims (2)

The indicated target is due to the fact that the molded fraction is rewound to the drain threshold by means of an all-pre-air mixture, and the so-called fryuolo is subjected to a military jet and then the iron is unloaded in a direction that is directly opposed. The initial hydraulic classifier is equipped with a monjus, spaced coaxially to the Discharge chamber, in the lower part of which there are nozzles for scouring the sediment, and a device for feeding the Air mixture. The device for feeding the air / gas mixture is made in the form of a saturator installation connected to a collector and pipes with slotted holes that are installed with the possibility of turning, while the drain threshold is polypropylene with the possibility of movement relative to the axis of attachment. On 4ig. I depicts section A-A in FIG. 2 hydraulic classifiers; in fig. 2 - hydraulic top view classifier; Hydraulic classifier contains separation chamber 1, charging chute 2, pipes 3, in which there are caviar-shaped holes 4, valve 5, collectors 6, annular collectors 7, drain threshold 8, mounted on axis 9, sleep & amp drive 10, and the drain 8 is covered with elastic material 11, discharge chute 12, monzhus 13, drain nozzle 14 and nozzles 15. Saturation systems 16 are connected to the collectors 6, having 17 an actuator 17 of the valve 18 and valve 19. Msijus 13 is made with suction pipe 20 s the hinge 21, hinged and re-positioned - the upper level of the liquid in the chamber 1, the compressed air pusher piping 22 with the valve 23 hinged on the hinge, and the unloading device 24 with angles 2 5, branch pipes for connecting the vacuum 26, the compressed air 27 , level gauge 28, pressure gauge 29, safety valve ZO and nozzles 15. Monjus 13 is placed in chamber 1 on brackets 31. The work of the hydraulic classifier is carried out as follows. Water is pumped into the saturator 16, valve 19 is closed, high pressure hot air is pumped, actuator 17 is turned on and a water / air mixture is prepared, and air line valve 19 closes. An air mixture from saturara ora is passed through the valve & 18 valve into the collector 6, located on one side of the pipe. The pre-slits 4 of the pipe 3 are installed at a certain angle and connected to the collectors 6 and the annular collector 7. The pulp is fed into the separation chamber 1 through the wide chute 2. Particles of the product, whose hydraulic size is greater than the speed of the upward flow of the first rotary pipe 3, sink to the bottom chambers, and all particles of smaller hydraulic size are discarded to the second one, which has a lower upflow velocity, a certain number of particles in this zone are also lowered to the bottom of the chamber, and so on. In this way, gradually decreasing upstream lymanar flows, which overlap and near the zone, are transported to the discharge threshold 8 of the product particle of the required hydraulic size. The pre-air mix lift is significantly larger than the upstream water flow, so the use of a water / air mix allows you to reduce water consumption. After use in the pre-air mixture of one saturator installation 16, the other is turned on and the mixture is supplied to the second collector 6. Particulate particles of the large fraction settled to a certain level in the separation chamber 1 are disconnected from the nozzles 15 with water and absorbed into the pipeline 2O of the monogram 13. The volume pumped through the water nozzle 15 must be equal to the volume occupied by the particles of the coarse fraction in order to prevent the liquid in the chamber 1 from sharply fluctuating. In addition, to maintain a constant level of discharge through the threshold 8 with a certain decrease in its deflection 8 with a threshold of 10 and then driven again and voayraschaets original position after discharging the coarse fraction. The coarse fraction through the pipeline 2O enters the monzhus 13 at certain intervals when the vacuum is turned on (through pipe 26). During this period, the valve 23 on the piping 22 with compressed air pumping jy When the monzheus 13 is filled with a large fraction, the level gauge (nipple 28) transmits a pulse to vacuum deviation: and to turn on the compressed air (nipple 7). The flap 21 will also close with a large fraction with a small amount of water It is compressed by compressed air through the extrusion conduit 22 to the receiving device 24. Or the SHUTTLE ON the npwevrooM device compressed air is discharged through the opening 25 and the coarse fraction is loaded into the mill. If necessary, a coarse fraction of sediment in the monoge, 13 is crushed with water using nozzles 15 The application of the invention improves the efficiency of the classified chopped ruts at the processing plants and replaces low-efficiency mechanical equipment. Formula of shadowing 1. A method of hydraulic classification of a material, including loading a pool, dividing the source material into heavy and light fractions and removing them from the process, characterized in that, in order to increase the efficiency of the separation process by reducing water flow , the light fraction is transported to the overflow threshold by means of water-air mixture flows, and once the fracdyon is activated, the water jets are discharged and then discharged by suction in the direction left of the spoo sediment. 2. Hydraulic classifier for the implementation of the method, including the chamber, unloading, loading chute installed in the top part of the separation chamber, drain threshold, discharge drainage chute, discharge device for a heavy fraction differing from the fact that it provides a cable that is coaxially separated. , in the lower part of which there are nozzles for scouring the sediment, and a device for supplying water-air mixture. 3. Classifier according to claim 2, which is based on the fact that the device for supplying water to the mixture is made in the form of a saturator installation connected to a collector and pipes with chips, shone holes, installed with the possibility of rotation. 4. Classifier according to cl. 2 and 3, due to the fact that the drainage yorog is made with the possibility of movement relative to the axis is fixed. East (ethnics of information taken into account during the examination 1. Reference book on ore beneficiation. M.; Henpa V 1974, p. 268, fig. 178. 2. Helping on the development, j jedra, 1971, p. 872, fig.183 (prototype). ffoffff . fug. /