SU774596A1 - Method and apparatus for sorting materials - Google Patents

Description

The invention relates to the field of mineral processing and can be applied to mining, chemical and other minerals. The known method of hydrazlic classification of minerals, which consists in the separation of material in the stream, the direction of which coincides with the direction of the main acting forces, and the hydraulic classifier for the implementation of this method 1. The disadvantage of this method and device for its implementation is slow and fuzzy separation of the material and consequently the clogging of a large product with fine particles, and the discharge is large, with the clogging of the separation products due to the circulation movement of the pulp. The closest technical solution known from the performed function and the achieved result is the method of material classification, which consists in loading the initial material, dividing it in the upward flow of liquid and in subsequent unloading of products in the NIN. The known method is carried out in a device for classification, inserting a classification chamber, a loading chute mounted in the upper part of the chamber, a device for removing separation products 2. A disadvantage of the known method of hydraulic classification and hydraulic classifier consists in concentrated pulp loading without isolating the finished class and in a low sedimentation rate of a large fraction, which results in a low specific load of the classifier. The purpose of the invention is to intensify the classification process. This goal is achieved in the method of classifying a material due to the fact that during the unloading process the initial material is divided into fractions, and the coarse fraction is subjected to classification in the field of centrifugal forces. In this case, in the device for carrying out the method, the classification chamber is provided with a drum, on the surface of which there are blades rotatably mounted and placed in the vanishing zone

A coarse fraction from the loading chute, as well as due to the fact that plates are mounted on the periphery of the drum blades.

FIG. 1 shows the device, pitchfork on top; in fig. 2 shows section A-A in FIG. one.

A device for classifying material contains a separation chamber 1, a chute 2, a duct 3, a deck 4 (the deck can be made in the form of a sieve and equipped with a vibration actuator 5), a drum 6 with disks 7 and curved blades 8 / ending with plate 9 and various lodis set to them angle of attack oL, shaft 10, bearings 11 and drive 12.

The operation of the device, for classification, of the material is carried out as follows.

The drive 12 activates the drum 6, according to the complaint 2 pulp is fed into the duct 3, then the direction of the pulp movement changes to decrease the speed, the deck 4 and the drum 6 are loaded. Under the action of centrifugal forces, the pulp moves along curvilinear mendatum 8 a larger mass than the particles b, a large angular velocity is said to be separated from the fine fraction and ejected from the plates 9 closer to the end wall of chamber 1 in zone c. Depending on the attack angle d, the plates 9 pulp is discharged onto the surface of the liquid d in different parts of the zone C, thus being evenly distributed throughout the zone. The determined speed of large particles a discharged into liquid d allows them to be quickly precipitated, while fine particles of b are transported to the discharge threshold of chamber 1 by upward flow not depending on the magnitude of centrifugal forces, telling cautic the necessary speed of movement in the liquid d.

Optionally, deck 4 is performed in sieves and vibrator 5 is used to vibrate to prevent clogging of the holes.

The thin fraction tr is separated from nyjjbpy before the drum b, enters the liquid d at a free fall rate and is transported to the drain threshold of chamber 1, and in zone c the ready class of particles b attached to particles a and entrained on the sieve is separated.

The application of the invention makes it possible to intensify the process of classifying crushed materials, to increase the specific loads and to reduce the consumption of the air-water mixture.

Claims (3)

1. A method of classifying a material, consisting in loading the source material, dividing it in an upward flow of liquid and subsequent unloading the separation products, characterized in that, in order to intensify the classification process, in the process of unloading, the source material is divided into fractions large fraction is subjected to classification in the field of centrifugal forces. 2. A device for carrying out the method according to claim 1, includes a further classification chamber, a charging chute mounted at the top of the keeller, a device for removing classification products, characterized in that the chamber is provided with a drum, on the surface of which there are blades installed rotatably and placed in the zone of gathering of the coarse fraction from the discharge chute. 3. The device according to claim 2, about the fact that, on the periphery of the blades of the drum plates are installed. Sources of information taken into account in the examination 1. Handbook on the enrichment of ores, volume I, M., Nedra, 1972, p. 872, fig. 183. 2. USSR author's certificate on the application 2473972 / 22-03, cl. B 03 V.5 / 62, 1977.