SU1208156A1 - Apparatus for gravity concentration of fine fractions of minerals - Google Patents

Description

one

The invention relates to the enrichment of minerals and can be applied to separate small classes of granular materials in density, exceeding the density of the separation medium.

The purpose of the invention is to increase the productivity and efficiency of bale by density due to the organization of the transverse mobility of the material being divided in the working area and to ensure a uniform flow of the raw material.

Figure 1 shows schematically a device for gravitational enrichment of small classes of minerals, a general view; figure 2 - section aa in figure 1; Fig. 3 shows an embodiment of the device with an expanded upper part, a side view.

The device is made in the form of an inclined chute 1 with transverse partitions 2. The system of fixed decks 3 forms longitudinal channels 4 (in Fig. 1 a device is shown conventionally consisting of three channels). The top cover and the bottom of the gutter 1, as well as the fixed decks 3, are congruent cylindrical surfaces with a radius equal to twice the width of the gutter. The supply funnel 5 is provided with vertical partitions 6 according to the number of working channels. Through the channels 4 in the upper part in the space between the transverse partitions 2, through tubes 7 pass through, having perforations of a special profile and communicating with the feed funnel 5. The collector 8 with the system of valves 9 provides water supply to the lower parts of the channels. In the lower part, the trough 1 is equipped with a suitable sump 10 for collecting the heavy fraction, and in the upper 12081562

Her part - a collection of 11 light fraction.

The device works as follows.

5 The initial fine material mixed with water enters the supply funnel 5 with vertical partitions 6. Through the transverse tubes 7 with holes, the mixture enters the space between the transverse partitions 2 of the groove 1 to the upper parts of the working channel sections 4. From the collector 8 with the valve system 9 in the lower parts of the channels with a given

15 speeds water, which, rising from the bottom up, creates a system of successive vortex cells. The heavy fractions of the feed down to the bottom of the channels

20 sump 10 to collect the heavy fraction. Light grains along with the flow are carried upward in collection 1I. Bent along the radius of the bottom surface of the working channels in accordance with

25 curved fixed decks 3

contributes to an additional transverse concentration of heavy components in the middle part of the channel (i.e., in the lower part of the bottom deflection), while

30 light fractions are squeezed to the periphery of the channel. As a result, the possibility of mutual separation of separated products is reduced.

35

40

The different widths of the working channels at the top and bottom of the load (Fig. 3) make it possible to have the same working speeds in both compartments, despite the considerable water content of the feed channels. In the case of equal widths of both compartments of the working channels, the height of the flow section in the upper compartment is chosen to be greater than in the lower compartment.

The different widths of the working channels at the top and bottom of the load (Fig. 3) make it possible to have the same working speeds in both compartments, despite the considerable water content of the feed channels. In the case of equal widths of both compartments of the working channels, the height of the flow section in the upper compartment is chosen to be greater than in the lower settlement.

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(f) U8. 2

Editor M.Petrova

Compiled by E. Kiseleva

Tehred T.TulikKorrektor S.Cherni

Order 205/38 Circulation 515 Subscription

Vshipi State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

9e.Z

Claims (1)

DEVICE FOR GRAVITATIONAL ENRICHMENT OF SMALL CLASSES OF USEFUL FOSSILS, including an inclined chute with a lid and a bottom, a fixed deck with transverse partitions, a device for supplying raw materials, a heavy fraction receiver and a system for supplying a separation medium, characterized in that, in order to increase productivity and enrichment efficiency in density due to the organization of the lateral mobility of the material being shared in the working area and ensuring a uniform supply of feedstock in an inclined trough additional fixed decks were installed, with this deck, the cover and the bottom of the trough are made in the form of congruent cylindrical surfaces of radius equal to the doubled width of the trough, and the device for supplying the feedstock is made in the form of perforated tubes located in the space between the decks across the movement of the material . >