SU886991A1 - Crushing and sorting unit - Google Patents

Description

one

The invention relates to the field of crushing, grinding and enrichment of rocks, ores, materials, namely, crushing and screening plants, aggregates, and can be used in the mining and construction and road sectors of the industry.

A crushing and screening plant is known, comprising a frame, a screen with upper, intermediate and lower sieves, a grinder and a conveyor for loading crushed material into screen 1.

Since this installation is intended for quarrying, it does not have the necessary compactness for constrained underground conditions, especially with respect to the vertical dimension.

The purpose of the invention is to increase its compactness by reducing the height.

This goal is achieved in the proposed 20 crushing and screening plant, containing a frame, a screen with upper, intermediate and lower sieves, a crusher and a conveyor for loading crushed material into a screen, with the screen being equipped with an additional 25 sieve with cells like a bottom screen. adjacent to the intermediate situation in the form of its continuation and adjacent to the discharge end of the conveyor.

The drawing shows a schematic diagram of the proposed installation.

The installation consists of a receiving box 1, conveyor 2, tray 3, screen 4 with the top 5, intermediate 6 and bottom 7 screens, trays 8 and 9, crusher 10, box 11, conveyor 12, tray 13, additional screen 14, collecting hopper 15 , vibrodrive 16, frame 17 and undercarriage 18.

The operation of the plant is explained in relation to the processing of mica ore in underground conditions.

The ore is loaded, not shown in FIG. the loading machine into the duct 1 and the conveyor 2 is guided through the tray 3 to the upper sieve (or grate) 5 of the screen 4. Due to 16 vibrations driven by the vibration actuator, the screen vibrations and flat crystals fall onto the sieve 6, from the surface of which is dropped through the tray 8 to shipment is the most valuable mass - industrial product.

From the mass that passed through the sieve 6 on the bottom sieve 7, a minimally conditioned fraction is separated — a rough concentrate of mica (about 20 mm or more), which is directed through the tray 9 to the ore board. The remaining mass passing through the cells

sieve 7, gets into the bunker 15 n further - on the tab.

The oversize material is dumped into crusher 10, and the crushed mass is conveyed by conveyor 12 through tray 13 to additional sieve 14.

The latter is carried out as a loading end of the intermediate sieve 6, continued at the end of the screen, but with cells, as in the lower sieve 7 (i.e. 20X20 mm).

Through the cells, the sieve 14 passes into the hopper 15 and is rocky and sub-conditioned fines, not income to the sieve 6.

As a result of such an installation with an additional sieve, it is possible to exclude one or several intermediate screeners, and thereby reduce the height, as well as the metal intensity of the installation.

Claims (1)

Invention Formula A crushing and screening plant, containing a frame, a screen with upper, intermediate and lower sieves, a crusher and a conveyor for loading crushed material into a screen, which in order to increase its compactness by reducing the height, the screen is equipped with an additional screen with cells, like in the lower sieve adjacent in front of the intermediate sieve in the form of its continuation and interfaced with the discharge end of the conveyor. Information sources, taken into account in the examination 1. Pit and Quarry Handbook, vol. 43, Chicago, USA, 1950, p. 511.