SU869819A1 - Vibration flotation machine - Google Patents

Description

one

The invention relates to mineral processing, in particular the process of mineral separation in flotation machines.

A known vibratory flotation machine, comprising a chamber, a vibration conduit with aerators, a receiving pocket, devices for removing foam and unloading sands 1.

This machine is not very suitable for flotation, such as elbor, for the following reasons.

Synthetic material Elbor presented in the specie in the form of hexagonal intergrowths. The specter is first crushed to a certain size, then subjected to flotation enrichment by the flotation treatment method, and during the flotation enrichment process hexagonal intergrowths must be previously destroyed according to the principle of not destroying anything superfluous.

The flotation enrichment of elbor in the best way occurs in the mother liquor, i.e. in an aqueous solution of CMC, where the initial enrichment product (flotation size) is fed into the flotation machine through the receiving pocket at low humidity or

(Ukhim. Therefore, the usual idea of a moving stream of flotation pulp in the 6t chamber of the receiving pocket to the tail pocket is out of the question. There is practically no such flow, and the largest particles of elbor will accumulate at the receiving pocket.

The removal of rock specie particles during flotation enrichment of elbor by the reverse flotation method is carried out with foam, since these particles are carried onto the pulp surface as foam, but it is very difficult to unload the enriched elbor using a conventional tail pocket. loss of the queen cell with which the rock particles will be carried away, and this cannot

affect the quality of the concentrate. L2j The aim of the invention is to improve the quality of the concentrate.

The goal is achieved

25 in that the machine is equipped with a hermetic inclined chute with a grill mounted between the chamber and the receiving pocket, while the inclined chute and the chamber are equipped with ultrasonic

Claims (2)

There are 30 converters mounted on their bottoms on the outside, and the chamber is equipped with guide vanes. The device for unloading sands is made in the form of a truncated cone with a nozzle, between which there is an elastic washer, compressed with a nut with a flywheel. The grid is placed in an airtight gutter and is installed with a gap that can be adjusted depending on the maximum particle size in the feed. The drawing shows a General view of the vibratory flotation machine. The vibrofotomachine consists of chambers 1, a receiving Pocket 2 with an inclined chute 3, a sand discharge device (for enriching the elbor), made of a truncated cone 4, a cap nut with a flywheel 5, and an elastic washer b made of rubber, for example. The chamber 1 in the longitudinal part, laterally, is equipped with semi-annemic screws consisting of a system of narrow hingedly fixed guide vanes 7, which can be rotated by a small angle with the help of t (not shown) at the same time. On top of the chamber 1 is provided with foam 8. In the chamber 1 there are located aerators 9 equipped with rods 10, which are driven in an oscillatory motion in a vertical plane from an eccentric vibrator consisting of an electric motor 11, an eccentric shaft 12, support brackets 13, a base plate 14 with direction The sleeves 15, the springs 16, the rollers 17 and the forks 18. The forks 18 are rigidly connected to the trousers 10. The support plate 14 is fastened to the sides of the chamber 1 by means of the staples 19. Ultrasonic magnetostrictive transducers 20 are hermetically mounted in the notches of the bottom of chamber 1 and the inclined chute 3, and transverse strips 22 inside the inclined chute-lattice 21c. The purpose of the lattice is to slow down the movement of solid particles of the suspension. which can be adjusted depending on the maximum particle size in the feed. Vibrational flotation miiyina can operate in batch and continuous modes. Before starting the vibroflot machine (VFM), its chamber is filled with a mother liquor — an aqueous solution of CMC, in which emulsified flotation reagents are simultaneously prepared. Kerosene and pine oil, in continuous mode, the VFM mother liquor and reagent are replenished as they are consumed. Air is then introduced into the aerators. An eccentric vibration drive motor is connected and power is supplied to the magnetostrictive transformers of a high-frequency electromagnetic oscillator. The motor 11, rotating the centric shaft 12, through the rollers 1.7 provides for periodic movement of the rods 10 with aerators 9 from top to bottom, and the return stroke is provided by springs 16. The aerator in the pulp is accompanied by the appearance of circulation flows from their sides - from the bottom up and through its perforated grid from above down as well as fine dispersion of incoming air by the grille. The lateral upward pulp flows pass through a system of inclined blades 7, which provide a constant displacement of the pulp circulation flows and transport of sand in the bottom part of the chamber from the inclined chute to the discharge device. When the transducers are turned on, the mother liquor that is in the chamber and in the inclined chute is subjected to ultrasonic vibrations, as a result of which cavitation occurs in it. The raw material, crushed to the required grain size, for flotation enrichment is fed to the receiving pocket of the vibroflot machine, where it is moistened in the mother liquor and along the inclined chute enters the flotation cell. In the process of promoting the material, its particles s in the bottom part of the gutter and chamber are subjected to continuous exposure to cavitation, which destroys hexagonal splices, cleans the elbor particles from the particles, while the mineral itself remains practically unbroken and retains high abrasive properties. Of particular importance in the enrichment process of elbor is the preliminary ultrasonic treatment of the source material in the inclined chute, since here the main destruction of hexagonal intergrowths takes place, in the chamber mainly the process of flotation enrichment of elbor by reverse flotation takes place and the surface of the mineral particles is adjusted to the ultimate purity. Therefore, the time of passage of the raw material along the chute (the time of its ultrasonic treatment in the chute) is selected, depending on the intensity of the ultrasonic waves, the speed of the material, which is controlled by the grid 21. This is achieved by changing the gap between the grid and the bottom of the inclined chute. The rate of passage of the enriched material in the bottom part of the chamber is controlled by the inclination of the vanes 7, which together with the aerators play the role of hydraulic augers. In the process of flotation enrichment of elbor, the rock particles contact with air bubbles and are carried onto the pulp surface as loaded foam, removed from the flotation machine 8 with foam, 8, and the enriched mineral elbor is removed from the chamber through a discharge device. Claim 1. Vibration flotation machine, including a chamber, vibrating with aerators, a receiving pocket, a device for removing foam and unloading sands, characterized in that, in order to improve the quality of the concentrate, the machine is equipped with a sealed inclined chute with a grid installed between the chamber and receiving The inclined chute and the chamber are equipped with ultrasonic transducers mounted on their bottoms on the outside, and the chamber is provided with L guide vanes. 2. The machine according to claim 1, characterized in that the device for unloading sands is made in the form of a truncated cone with a nozzle, between which there is an elastic washer, compressed with a cap nut with a flywheel. 3. Machine pop. 1, characterized in that the grate is installed with a gap relative to the bottom of the groove and with the possibility of its adjustment. Sources of information taken into account in the examination 1. France Patent 1353878, cl. In 03 D, pub. 1963. 2. USSR author's certificate number 360104, cl. B 03 D 1/14, 1967.