RU2581065C2 - Rocking long tom - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to mining industry, particularly, to gravity dressing of minerals, particularly gold-platinum-containing gravel deposits. Device - a swinging long tom - consists of a frame with a damping buffer, an inclined chute with a stop, locking coating and masks on bottom. Bottom rests on frame via pendulum post tail part, and through a roller-head part. To head part is connected to crank drive for reciprocal movement of inclined chute with its tail part and vertically. In uppermost position of chute its stop contacts with damping buffer frame to allow its shaking and bed in inter-pattern space giving latter constant gingival. Patterns are made from alternating grooves with height h = 30-50 mm and height h with pitch "a" between them at an angle of 10-30° to bottom gate, at that h = 2/3 h and a = (1.4-1.6) h.

EFFECT: technical result is efficiency, increased extraction of fine and thin particles of minerals, obtaining concentrates class to 1/10 mm and less.

1 cl, 4 dwg

Description

The invention relates to the mining industry, to devices for gravitational enrichment of minerals, namely gold-platinum-containing alluvial deposits.

Widespread in the practice of gravitational enrichment has found a "simple" gateway, which is an inclined trough with rows of corrugations (stencils) attached to a flat bottom (R.O. Robert "Technology of gravitational enrichment", M., Nedra, 1990, p. 233) .

A well-known gateway containing metal stencils under which rubber or wicker mats are laid (in the form of rugs made of corrugated rubber, cloth) (S.I. Polkin "Enrichment of ores and placers of rare and precious metals", M., Nedra, 1987, p. 346-347).

The disadvantage of these gateways is that the arrangement of the stencils, as well as the laying of mats under them, does not provide a sufficiently complete extraction of precious metals due to bed compaction. The essential condition for trapping, especially of small and thin particles of heavy metals, is not maintained - the bed content between the corrugations of the stencils in a constantly loosened state in the laminar regime of pulp flow.

A known gateway with movable stencils (patent RU 2095148 C1, B03B 5/70, B07B 1/00 "Ponomarev's gateway").

Known gateway screen with transverse swinging stencils (patent RU 2087202 C1, B03B 5/70, B07B 1/090 "Gateway screening for minerals").

These designs provide loosening of the bed, which contributes to the movement of heavy particles, but do not provide effective retention of small and thin particles in the pockets between the corrugations of the stencils due to the lack of a snug fit of the corrugations to the bottom.

Known gateway of the pendulum type (patent RU 2234983 C2, B03B 5/72) for mineral processing, including a gutter of a certain curvature in cross section and stencils equipped with flaps, mounted with the possibility of oscillations about its longitudinal axis. However, this solution does not provide a sufficiently complete loosening of the bed between the stencils.

The closest in technical essence to the claimed is a device for the enrichment of minerals tray type (patent RU 2260447 C2, B03B 7/00, B03B 5/72).

The disadvantage of this device is that the installation of a stencil-type blinds with an adjustable angle of inclination of the plates makes it impractical to complicate the design and its reliability, and the installation of stencils with a gap in the bottom reduces the enrichment efficiency.

The aim of the invention is to increase productivity, increase the extraction of fine and fine particles of minerals, obtaining concentrates of the class up to 0.1 mm or less.

The technical result is achieved by the fact that by ensuring the looseness of the bed in the interfacial space and a more intensive movement of heavy particles from the upper layer to the bottom as a result of accelerated reciprocating movements of the gutter, ending at each cycle by impacting the gutter with a shock-absorbing buffer and, accordingly, shaking the bed in the interfacial space .

The swing lapping gateway is graphically depicted in FIG. 1-4.

In FIG. 1 shows a general view of the gateway; FIG. 2 is a top view of the gateway drive, FIG. 3 - thrust drive device, in FIG. 4 is a cross-sectional view of a stencil.

The tweeter lock contains an inclined groove 1, a loading tray 2, a catching cover 3 and stencils 4 are laid on the bottom of the groove. The groove is supported on the frame 5 by the head (loading) part through the rollers 6, and the tail (unloading) part through the pendulum (articulated) rack 7 , height-adjustable by mechanism 8. A crank drive 9 is connected to the head (loading) part of the gateway, which provides the chute with reciprocating movement, while the tail (unloading) part also moves vertically. To give the gutter a tremendous effect during each cycle, in the upper extreme position, an emphasis 10 is installed on the gutter, which contacts the shock-absorbing buffer 11 on the frame 5, and the bed is shaken in interfacial space.

In FIG. 2 shows a top view of the drive, where the drive consists of an engine 12, a gearbox 13, cranks 14 mounted on both ends of a low-speed shaft of the gearbox. To the crank 14 and the beam 15, the rod 16 is pivotally connected. The beam 15, in turn, is pivotally connected to the groove 1 through the fork 17.

In FIG. Figure 3 shows a traction device 16, including a damping mechanism, consisting of a sleeve 1, a piston 19, a compression spring 20. The purpose of the damping mechanism is to dampen shock effects on the drive when the gutter collides with the shock absorbing frame buffer.

In FIG. 4 depicts stencils made of alternating corrugations with a height of H = 30-50 mm and strips of height h with a step “a” between them at an angle of 10-30 ° to the bottom of the lock, with h = 2 / 3H and a = (1, 4-1.6) h. The pulp flow is in a wavy, laminar mode, and the vortex flows between the corrugations of the stencils contribute to the concentration of small and thin particles of minerals.

Gateway swing lapping works as follows. Depending on the properties of the material being enriched, using the mechanism 8, the working angle of the trough 1 is established. The drive 9 is turned on. The trough 1 begins to reciprocate, and during each cycle in the highest position, the gutter and, accordingly, the bed are shaken in the interfacial space. Sands, passing in a stream along the stencils, settle between the corrugations of the stencils. Under the influence of accelerated reciprocating and shaking movements, the bed in the stencil area is constantly in a loose state, which contributes to the movement of small and thin particles of mineral from the upper layer to the bottom and their concentration in the pockets between the corrugations of the stencils.

Claims (1)

Lapping swinging gateway, consisting of a frame with a shock-absorbing buffer, an inclined trough with an emphasis, a catching cover and stencils on the bottom, supported by the tail part on the frame through the pendulum rack, and by the head part through the roller, to which the crank drive for reciprocating is connected the movement of the inclined trough with the movement of its tail and vertically, in the extreme upper position of which its emphasis is in contact with the shock-absorbing buffer of the frame to ensure shaking of the trough and stelae in the stencil space giving the last constant friability, while the stencils are made of alternating corrugations with a height of H = 30-50 mm and strips of height h with a step "a" between them at an angle of 10-30 ° to the bottom of the lock, with h = 2 / 3 H and a = (1.4-1.6) h.

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