RU2183995C1 - Spiral-laminated concentrator - Google Patents

Abstract

FIELD: dressing of mineral resources. SUBSTANCE: spiral-laminated concentrator is used to recover fine gold while processing man-made and pillar placers with large content of fine gold. Spiral-laminated concentrator has bath expanding upward with inclined settling plates mounted above transporting spirals fitted with pins-agitators installed above chambers- slime collectors, drive, loading gear, drain thresholds set by level, unloading gear, agitators positioned in chambers-slime collectors with rotation drives mounted on chambers-slime collectors. In this case chambers-slime collectors are filled with heavy liquid which does not mix with water. EFFECT: enhanced efficiency of recovery of fine gold, prolonged time of uninterrupted operation of concentrator. 5 dwg

Description

 The invention relates to the field of mineral processing and is used to extract fine and fine gold in the processing of man-made and intact placers with a high content of fine and fine gold.

 Known devices operating on the principle of gravitational deposition, performing the function of concentrating a valuable component, are locks, screw separators, jigging machines [1].

 Their main disadvantage is the low collection efficiency of fine and fine gold [2].

 The closest to the essence of the problem being solved is a spiral-plate concentrator, including a bath expanding upward, sump chambers, conveying spirals equipped with agitator pins above sump chambers, a drive, a loading device, drain thresholds set horizontally, an unloading device, while the upwardly expanding bath is equipped with inclined precipitation plates mounted above the conveying spirals [3].

The disadvantage of this device is the rapid compaction of the natural mineral bed (concentrate) in the chambers, and, as a result:
1) the difficulty of penetration into the natural mineral bed (concentrate) of particles of fine and fine gold, which leads to their loss;
2) the need for more frequent removal of the concentrate, which reduces the time of continuous operation of the spiral-plate concentrator.

 The aim of the invention is to provide the loosened state of the natural mineral bed (concentrate) in the chambers-sludge collectors, increasing the efficiency of extraction of fine and fine gold, increasing the time of continuous operation of the spiral plate concentrator.

 This goal is achieved by the fact that the spiral-plate concentrator, including a bath expanding upward with inclined precipitating plates installed above the transporting spirals, equipped with agitator pins above the sump chambers, a drive, a loading device, drain thresholds set horizontally, an unloading device, is equipped with agitators located in the chambers, with the rotation drive of the agitators mounted on the chambers, while the chambers It is filled with a heavy liquid, water-immiscible.

 In the well-known spiral-plate concentrator, the loosening of the natural mineral bed (concentrate) is carried out with agitator pins, which are equipped with conveying spirals above the sump chambers.

 This was not enough.

 The natural mineral bed is compacted, the penetration of fine and fine gold particles into the natural mineral bed (concentrate) is difficult, there is a need for more frequent stops of the spiral plate concentrator to remove the concentrate, which reduces the time of continuous operation of the spiral plate concentrator.

 In order to ensure the effective penetration of fine and fine gold particles into the natural mineral bed of sizing chambers and increase the time of continuous operation of the spiral plate concentrator, it is necessary to ensure the loosened state of the natural mineral bed for as long as possible.

 In the present invention, the problem of loosening the natural mineral bed is solved from two sides.

 Firstly, agitators are additionally installed in the chambers under the conveying spirals, which are driven into rotation by a drive placed behind the chambers. The drive is switched on independently, periodically, as necessary. For placement of agitators, chamber-size chambers are respectively deepened and expanded.

 Secondly, size chambers are filled with a heavy liquid that does not mix with water, creating a separation layer. A heavy liquid that does not mix with water is an additional barrier for penetration into a natural mineral bed (concentrate) of waste rock, whose density is lower than that of a heavy liquid. These minerals form on a heavy fluid a floating layer carried by transporting spirals.

 Thus, the use of heavy liquids can drastically reduce the amount of waste rock entering the natural mineral bed (concentrate) and maintain the loosened state of the natural mineral bed much longer, therefore, the extraction efficiency of fine and fine gold is significantly increased, and the duration of continuous operation of the spiral plate concentrator is increased .

 Particles of a valuable component that have a density significantly higher than the density of a heavy liquid will penetrate the natural mineral bed and accumulate there.

 The invention is illustrated by drawings.

 In Fig.1 shows a longitudinal section of a spiral plate concentrator, in Fig. 2 is a view along arrow A, FIG. 3 is a view along arrow B, FIG. 4 is a section along BB, FIG. 5 is a section along G-G.

 The spiral-plate concentrator contains a bath expanding upward 1 with inclined precipitating plates 2 mounted above the conveying spirals 3, which are driven by a drive 4 mounted in the upper part of the upwardly expanding bath 1. In the lower part of the upwardly expanding bath 1 there are sump chambers 5, in which the agitators are located 6. The rotary drive of the agitators 7 is installed on the chambers-sizing machines 5. In the lower part of the chambers-sizing machines 5 there are unloading hatches 8. Transporting the spirals 3 above the sump chambers 5 are equipped with agitator pins 9. The loading device 10 is configured to supply power (pulp) to the lower part of the upwardly extending bath 1. Drain thresholds 11 are arranged along the perimeter of the upwardly extending bath 1, which are able to align them horizontally , and a water inlet chute 12 with a drain pipe 13. In the upper part of the upwardly extending bath 1 there is an unloading device 14. The size chambers 5 are filled with a heavy liquid 15 that does not mix with water.

 Spiral plate hub works as follows. The drive 4, the drive of rotation of the agitators 7 are turned on. The pulp containing particles of a valuable component enters the lower part of the bath 1 expanding upward through the loading device 10 and rises between the inclined settling plates 2 up to the drain thresholds 11.

 Due to the upwardly expanding bath 1, the rate of water rise between the inclined settling plates 2 gradually decreases to the surface of the water, creating favorable conditions (laminar motion of the hydraulic flow with a decreasing rate of rise and a thin layer of liquid) for the deposition of particles of a valuable component.

 The field of hydraulic flow rise velocities in the upwardly expanding bath 1 distributes particles of a valuable component according to their deposition heights (depending on hydraulic size) on inclined precipitation plates 2. The heaviest particles fall in the lower part of inclined precipitation plates 2, and small and thin - at the top. Then, particles of a valuable component roll along inclined precipitating plates 2 into sizing chambers 5, where the concentrate is collected, forming a natural mineral bed with high trapping properties (roughness, loosening) supported by agitator pins 9, which are equipped with conveying spirals 3, agitators 6 driven by in rotation drive rotation of agitators 7.

 In addition, heavy fluid 15 provides a loosened state of the bed in the chambers-sludge collectors 5 so that it does not pass into bed all fractions of the pulp, the density of which is less than the density of a heavy fluid.

 The concentrate is brought to a predetermined content of a valuable component and is periodically discharged through unloading hatches 8. The dehydrated ephels are continuously discharged by conveyor spirals 3 through the unloading device 14 to the dump. After cleaning, heavy water also returns to the technological cycle - it is poured into sump chambers 5.

 Clarified water rising upward, pouring over the drainage thresholds 11 set exactly horizontally, enters the water inlet 12 and then through the drain pipe 13 into the water cycle.

 Thus, the introduction of additional agitators and a heavy liquid, which is not miscible with water, makes it possible to maintain looseness and roughness of a natural mineral bed (concentrate), which leads to an increase in the efficiency of extraction of fine and fine gold, and an increase in the duration of continuous operation of a spiral-plate concentrator.

 As a secondary, but important function of the technological cycle of the spiral-plate concentrator, is the collection of clarified water, which can be used in the water cycle, which improves the environmental situation during mining operations.

Sources of information
1. V. N. Shokhin, A. G. Lopatin, "Gravity methods of enrichment." M. "Nedra", 1993, with. 159, 225-232, 241, 245, 249, 258-259.

 2. "Mountain Journal", 2000, 10, p. 36-37. "Experience in processing the stale tailings of the Kamensky conglomerates placer deposit.

 3. RF patent 2138336 V 03 V 5/52 "Spiral plate concentrator".

Claims (1)

 Spiral-plate concentrator, including a bath expanding upward with inclined precipitating plates installed above the transporting spirals, equipped with agitator pins over sump chambers, a drive, a loading device, drain thresholds set horizontally, an unloading device, characterized in that it is equipped with agitators, located in the chambers, with the drive of rotation of agitators mounted on the chambers, the chambers are filled with cords loi liquid immiscible with water.

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