RU47771U1 - INSTALLATION OF ENRICHMENT OF USEFUL FOSSILS BASED ON THE VIBRATION HUB - Google Patents

Abstract

The utility model relates to the mining industry of rare and precious metals and can be used in the processing of gold-bearing ores at the stage of enrichment. To extract small particles of the material to be enriched, an installation is proposed that includes a loading device in the form of a sump, feeding the pulp coming into it to a cylindrical hydrocyclone connected to a conical hydrocyclone, the product from which is fed to a vibration concentrator containing gutter 6, in which enrichment is carried out in parallel with the transverse gutter inclined decks rigidly fixed in it with a gap from the bottom; A device is introduced into the gap to supply water in the form of a pipe with holes located between each pair of decks for directing water flows upward along the sloping of each deck and creating oncoming flows of water and pulp going from above, which loosens during vibration and particles of enriched gold settle in concentrate, discharged through an unloading pocket. As a result, it is possible to isolate the smallest particles of gold, for example, class 325 mm or less.

Description

For the enrichment of minerals, the use of gateways is known: for example, a.s. USSR No. 1111310, class IPC B 03 B 5/70, declared 04/13/83 which contains a box-shaped chute with stencils installed parallel to it, inclined in the direction of the pulp movement, installed with a gap from the bottom of the chute. Some locks are made with vibrating stencils (AS USSR 3724194, 03 V 5/70, 1980)

The disadvantages of gateways are large losses of enriched material, because a rather large amount of it is carried into the tails with turbulent pulp flows formed in the stencils,

The closest in technical essence to the proposed one is the use of a vibration concentrator for mineral processing at the stage of fine-tuning the concentrate, mainly gold (RF patent No. 2138337, class B 03 V 5/02, publ. 02.27.1999). The vibration concentrator contains a loading device, a screen, two chutes with catching coatings having flutes, water supply devices, a hopper under the screen, a vibrator, a device for turning the chutes along the longitudinal axis, a device for unloading the concentrate.

Due to the fact that the pre-treatment in the described concentrator is performed by a roar, and the concentration elements are trapping coatings with riffles of two gutters, the processing of enriched particles occurs rather rough and during enrichment there are large losses of small particles washed away from the catching surfaces of the concentrator. IN

as a result, an increase in the recovery of fine gold during lapping does not exceed 10-15%.

The main objectives of the proposed utility model are: performing finer processing of particles at the initial stage of the process of enrichment of precious metals, mainly gold, creating the possibility of extracting the smallest particles and increasing the amount of gold recovered at the stage of enrichment.

The problem is solved in that in the installation of mineral processing, mainly gold ores, based on a vibration concentrator, including a loading device, a device for primary processing of material and a concentrator containing a gutter 6, a catching device, a vibrating device, devices for supplying water and unloading a concentrate, a loading device is proposed the device, the primary processing device and the hub should be performed separately and connected by means of communication, the primary device the work should be performed in the form of a cylindrical hydrocyclone connected to a conical hydrocyclone, while in the concentrator the catching device should be made in the form of transverse vertical parallel inclined decks uniformly spaced over the gutter area, rigidly fixed in it with a gap from its bottom, and perform the water supply device in in the form of a pipe inserted into the gap between the bottom of the gutter and the decks and having openings located between each pair of decks for directing water flows upward along the inclined deck and.

In this case, the parallel decks have an inclination at an angle of about 45. The unloading device is made in the form of a pocket in the bottom at the outlet of the concentrator trough.

And also the loading device is made in the form of a sump. The design of the installation is illustrated by the attached drawings. Figure 1 presents the installation diagram, figure 2 is a General view of a slightly inclined

vibration concentrator from the discharge side, figure 3 is a schematic representation of the movement of media in the concentrator, a longitudinal section on the side.

The installation (figure 1) contains a loading device in the form of a sump 1 connected in series through the pump 2 to the primary processing device in the form of a cylindrical hydrocyclone 3 and a conical hydrocyclone 4, the enriched product from which is fed to a vibration concentrator 5. The concentrator (figure 2) contains a rectangular chute 5, in which a catching device is installed, made in the form of a series of vertically parallel inclined decks 6, uniformly spaced along the length of the chute and rigidly fixed to its inner side the walls. Decks 6 are fixed in the trench with a gap from the bottom. A device was introduced into the gap for supplying water in the form of a pipe 7 with a valve (Fig. 3), in which openings were made between each pair of decks 6 for directing water flows upward along the inclined deck of each deck. The hub is mounted on the legs of the vibrator 8, made at the front and rear parts. An unloading device in the form of a pocket 9 is made at the inlet of the concentrator in its bottom part, while at the inlet of the concentrator, a nut 10 is made for the convenience of feeding the unloading product from the hydrocyclone 4.

Installation works as follows. The sump 1 is supplied with power (the tail pulp of the main enrichment stage), from which it is pumped through the connection means 2 to the cylindrical hydrocyclone 3, in which the first stage of classification and enrichment takes place: separation and discharge into the tailings of the liquid phase and transition of the particles of precious metal (gold) into the lower dense layers of pulp. Then, due to the pressure in the cylinder of the hydrocyclone 3, the thickened and dehydrated pulp enters the conical hydrocyclone 4 with a taper angle of 60, where the second stage of classification and enrichment takes place. The enrichment in a conical hydrocyclone 4 is based on the enrichment principle on curved surfaces. The beat off liquid phase is also sent to the tails. Under the action of forces acting in these two

hydrocyclones, gradually more and more fractional classification and fractionation of the enriched product is carried out.

From the conical hydrocyclone, the thickened sand pulp enters the vibration concentrator 5 (Fig. 2). The concentrator adopted the gravitational method of enrichment in a layer of water on an inclined surface in an upward flow of liquid, with a large coefficient of loosening.

The main concentration element is each deck 6, located at an angle of 45. The pulp of the enriched product is fed from above to the decks. Bottom-directed flows under the required pressure water is supplied (Fig. 3), which provides loosening of the pulp on the inclined surface of the decks in the upward flow under the influence of vibration with an amplitude of 3-4 mm and a frequency of 8 Hz, which is transmitted to the vibrator 8 due to the action of the eccentric shaft, installed under a hub (not shown). Water is supplied through the openings of the pipe 7 (shown in Fig. 3 by arrows) located between each pair of decks, while the pipe 7 is inserted into the gap between the bottom of the concentrator and the fixed decks. The gap can be 25-30 mm., And serves to direct the flow of water and transporting the concentrate to the discharge pocket 9. The discharge pocket 9 has a calibrated hole that allows the concentrate to pass the specified content. The tailings of the concentrate, going the upper way, are discharged through the tail threshold above the discharge pocket 9.

In the proposed installation, due to the passage of pulp along the working surfaces of the cylindrical and conical hydraulic cylinders, sequential fine classification and primary enrichment of the pulp is performed, which is then completed in ascending flows on the inclined surfaces of the decks with vibration of the concentrator, creating maximum pulp loosening and separation and sedimentation of fine particles - 325 and even to the molecular state, which cannot be enriched even in technologically complex and energy-intensive re-enrichment modules factory settings. Thus, using this installation, it is possible to isolate

fractions of the enriched precious metal (gold) with sizes up to 0.12-0.012 mm and increase the efficiency of the process of additional enrichment (extraction of small particles into concentrate) up to 56%.

Of the advantages of the installation, it can be noted: low power consumption (installation of a semi-industrial standard size - 4 kW, and industrial standard size - 35 kW); low saturation of equipment; simplicity in operation; use for enrichment of gold.

Claims (4)

1. Installation of mineral processing based on a vibration concentrator, including a loading device, a device for primary processing of material and a concentrator containing a chute, a catching device, a vibrating device, devices for supplying water and unloading a concentrate, characterized in that the loading device, a device for primary processing of material and the hub is made separately and connected by communication means, the primary processing device is made in the form of a cylindrical hydrocyclone a connected to a conical hydrocyclone, while in the concentrator the catching device is made in the form of transverse vertical parallel inclined decks uniformly spaced over the gutter area and rigidly fixed in it with a gap from its bottom, and the water supply device is made in the form of a pipe inserted into the gap between the bottom of the gutter and the decks and having openings located between each pair of decks for directing water flows upward along the slope of each deck. 2. Installation according to claim 1, characterized in that the parallel decks are inclined at an angle of about 45 °. 3. Installation according to claim 1 or 2, characterized in that the unloading device is made in the form of a pocket in the bottom at the outlet of the concentrator gutter. 4. The device according to any one of the preceding paragraphs, characterized in that the installation boot device is made in the form of a sump.