SU1695983A1 - Enrichment unit - Google Patents

Abstract

This invention relates to the beneficiation of minerals. The goal is to increase the efficiency of enrichment. Case 1 Take off the dredger 5 more completely from two consecutive chambers 2 with conical bottoms (KD) 3 Inside the chambers 2 there are inclined plates (R) for unloading the coarse fraction, made in the form of hydraulic elevators (EGs) 11, 12. A conical screen 7 with a screening surface 8 and a Sand pipe 9 is installed between the pipe 5 and chambers 2 tubes 10 for supplying water. The chambers 2 are mounted obliquely towards the sleeping nozzle 6. N are located along the direction of movement of the material at an angle of 35-65 ° & to horizontal. A conical screen 7 is installed in a pulp receiver 13 Pri MF 77 12 75

Description

This GE 11, 12 is connected to the nozzles 14, 15 of the outlet of a large product. For supplying water to the system of pipes 10 and GE 11, 12, water lines 16 with gate valves 17 are installed. Initial power through pipe 5 is fed to a conical screen 7, where gravel is released and discharged through pipe 9. Sandy sand is fed into the first chamber 2, where large particles are deposited on P and slide into

CD 3. From CD 3, the product is discharged by GE 11 through the nozzle 14. Improving the classification efficiency is achieved by supplying water from the tubes 10. The remaining product enters the second chamber 2. Smaller sand particles settle to C and unload from CD 3 by means of GE 12. Drain is discharged through pipe 6. 4 Il.

The invention relates to the field of enrichment classifying devices used in the industry of nonmetallic building materials for the enrichment and separation of gravel-sand mixtures in hydromechanized quarries, and can be used to divide into fractions by size of other minerals: ash and slag waste, coal, ore and

others

The purpose of the invention is to increase the efficiency of enrichment.

FIG. 1 shows the processing unit, general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 shows a section B-B in FIG. 2,

The processing unit has a housing 1 made of two successive chambers 2 with conical bottoms 3. Inside the chambers 2 there are inclined plates 4. At the opposite ends of the housing 1 there is a nozzle 5 for feeding the slurry and a drain nozzle 6. Unloading devices are connected to the conical bottoms 3 large fraction. A conical screen 7 with a screening surface 8 and a sand pipe 9 is installed between the pipe 5 for feeding the slurry and the chambers 2. Distribution tubes 10 for water supply are installed in the upper part of the conical bottoms 3. The devices for unloading the coarse fraction are made in the form of hydraulic elevators 11 and 12, the chambers are mounted obliquely towards the discharge nozzle 6. The plates 4 are located along the direction of movement of the material at an angle of 35-65 ° to the horizontal. A conical screen 7 is installed in a pulp receiver 13. Hydraulic elevators 11 and 12 are connected to the pipes 14 and 15 of the outlet of a large product. For supplying water to the system of distribution pipes 10 and hydraulic elevators 11 and 12, water lines 16 are installed with valves 17.

The processing unit operates as follows.

The original gravel-sand mixture from the dredge in the form of pulp through the pipe 5 for

the feed of the slurry enters the conical screen 7, where, using the screening surface 8, gravel is extracted and discharged through the sand pipe 9 to the finished product warehouse.

Peschana slurry passing through

the screening surface 8 of screen 7 enters the pulp receiver 13. From the latter, pulp flows by gravity into the first classification chamber 2, where, thanks to inclined plates 4 located in its cavity at an angle of 35-65 ° to the horizontal plane, the flow is divided into thin layers, which provides a laminar mode of pulp movement. In the first chamber 2, sand is separated according to a given boundary grain. The coarse sand settled on the inclined plates 4 slides down into the conical bottom 3 for coarse sand. At the top

part of the conical bottom 3 is a system of distribution pipes 10, providing a uniform upward flow of flush additional water flowing through the conduit 16. The specified

The ortok of water provides additional classification and enrichment of a large fraction of sand. Next, the coarse sand enters the hydraulic elevator 11 for coarse sand. Pressure water flow from

conduit 16 picks up sand that has entered the hydraulic elevator and directs it to branch pipe 14 to remove coarse sand and then to the finished product warehouse.

Fine sand, not deposited in the first chamber 2, enters the second chamber 2, the cross-sectional area of which is larger than in the first chamber, and the plates 4 are located at a smaller distance from one another. Due to the larger cross-sectional area of the second chamber 2

and smaller interplate channels in it

Smaller sand particles are deposited than in the first chamber 2, and clay and dust particles pass into the drain pipe 6 and are removed into the open space.

The sand particles of the fine fraction deposited on the inclined plates 4 of the second chamber 2 slide into the conical bottom 3. In the upper part of the bottom 3 there is a distribution pipe system 10 for supplying an upward flow of water and further classifying and enriching the fine sand. Hydraulic elevator 12 provides the issuance of fine sand in the pipe 15 and deliver it to a separate warehouse.

The required upstream flow rate is provided by adjusting the valves 17.

Claims (1)

Invention Formula An enrichment unit, comprising a housing made of two successively arranged chambers with conical bottoms, inclined plates located inside the chambers, located at opposite ends of the housing body 0 supply of slurry and drain nozzle connected to conical bottoms of the device for unloading coarse fraction, characterized in that, in order to increase efficiency, it is equipped with a conical screen with a screening surface and a Sand fitting installed between the nozzle for feeding the slurry and chambers the upper part of the conical bottoms with distribution pipes for water supply; clonally in the direction and the drain nozzle, and the plates are installed along the direction of movement of the material at an angle to the horizontal. 35-65 ° Type A R 15 Bh eight 1 Bb . J B - B Fy.u