SU829173A1 - Concentration table - Google Patents

Description

one

The invention relates to the separation of solid materials, namely, concentration tables for the separation of bulk mineral mixtures and other materials with a dry gravity enrichment method, and can be used in mineralogical laboratories and concentration plants.

A hub is known that contains an air-permeable deck with rifles attached to it, which are located at some distance from each other and have a cone-shaped shape, an air chamber with an air duct, connected to the deck {d}.

The closest to the invention in its technical essence and the effect achieved is a concentration table containing an air-permeable deck with rigidly fixed ripples on it, decreasing in height and increasing in length towards the discharge edge of the table, the air chamber connected to the deck, and the drive Dl.

The goal of this is to increase the efficiency of the separation of materials, increase the productivity of the table by creating a fluidized bed

along flute and simplified construction.

The goal is achieved by the fact that the reefs are fan-shaped and have wedge-shaped ledges at the ends, while the height of the grooves is reduced inversely, in proportion to the increase in their lengths, and the side discharge edge of the deck has parallel cutters. 1 schematically shows a table, a general view; in fig. 2 - deck, s, rifle mi, plan view in FIG. 3

Section A-A in FIG. 2; in fig. 4 riffle, side view; in fig. 5 - riffle, view-plan; in fig. 6 - deck with rifgmy, plan view; in fig. 7 is a diagram of the formation of layers in boiling water

layer.

The device contains an air-permeable deck 1 with 2-5 corrugations rigidly attached to it, located

fan-shaped and filled with increasing length and decreasing height in the direction from the back edge of the deck to the unloading edge 7. In the longitudinal vertical section of the rifle

made in the form of a rectangle 8,

acanthus wedge-shaped part. The discharge side edge 10 of EKI 1 is provided with parallel cutters 11-14. The device also contains an air chamber 15 connected to the deck, a drive of asymmetric horizontal vibrations and receiving bunkers (not shown). if it is necessary to obtain a high-quality concentrate of granular material of fine size classes of rifle 2-5 on the deck, they are arranged parallel to each other, with the rifle -2 loading zone mounted on the axis and fixed to the latter console.

. The device works as follows.

A sample of polymetallic ore weighing 500 g with a grain size of 0.50, 25 mm, containing quartz, galena, sphalerite and barite, is evenly fed through the dispenser into the loading area of the air-permeable deck 1, set at an angle to the longitudinal axis. devices. Then, air is supplied from the air chamber 15, the flow of which is regulated depending on the size and density difference of the grains of the material being divided. At the same time

with air supply, deck .1 is driven by an asymmetrically horizontal vibration drive, the frequency of which is adjusted depending on the density of the material.

 The incoming sample material is located in the loading area of deck 1,

forming a layer not exceeding the height of the rectangular part .8 of the rifle 2. Under the action of the air flow through the pores of deck 1, a fluidized bed is formed in the loading zone, resulting in a redistribution of material particles tightly: t The yellow particles accumulate directly on the porous surface of the deck, and the lungs above them. Thus, layers of material flow are formed. Under the action of asymmetrical horizontal oscillations of deck 1, the material particles acquire an approaching movement toward the discharge zone of deck 1, and the heaviest particles of the material acquire a greater speed of movement than light ones.

The rifle 2, set at an angle ft, to the side loading edge b of deck 1, retards the movement of the material, thereby contributing to the formation

layers in the flow of material. When the wedge 9 of the rifle 2 reaches, the light particles in the upper layer of the flow are poured through the wedge 9, while the heavy particles continue to move along the rifle. In the intervals between the drifts of 3, 4 and 5, the process of prote-. kaet analogically. A light fraction, reaching the front discharge edge of deck 7 of deck 1, is poured freely into the receiving bin. The heavy fraction is directed to the lateral discharge edge 10 of deck 1, where cutters 11–14 are installed, guiding the material to separate receiving bins to collect the concentrates.

Thus, the concentration table allows the separation of minerals of heavy fractions such as cassi. terit-pirate, galena-sphalerite-barite 0 and obtain the monomineral fraction of these Mineralog. This significantly reduces the number of roughing operations, which increases productivity. In addition, the present invention extends the range of use of the concentration table, which can be used in finishing operations.

Claims (1)

1. US Patent No. 3080056, cl. 209-466, published. 1963. 2, USSR Author's Certificate No. 242794, cl. On 07 On 4/08, 1967 (prototype). PoM SojffyAa W .7 Aa j5 SS $: , 1 ss Phage.} Jl