RU1808379C - Device for beneficiation of mineral resources - Google Patents

Abstract

Use: to separate materials by size and density in mineral processing. SUMMARY OF THE INVENTION: in a centrifugal installation comprising two hydrocyclones for separating the starting material and sand cleaning, the hydrocyclone for separating the starting material is cylindrical with a ring insert installed in the conical part at a distance of 1/2 to 2/3 of its height from the base of the peer chamber with a water supply pipe and an axial calibration cylinder-parabolic rod. 2 ill.

Description

The invention relates to mineral processing, in particular to the separation of materials by size and density by centrifugal flow, and can be used in coal preparation enterprises and other industries,.;: ;; . ; .. .., ..-. An object of the invention is to increase separation efficiency.

The design of the hydraulic cylinder for separating the initial Material cylindrically allows you to create the main and additional (cleaning) zones in the apparatus, in which the total mass of the initial feed and the cleaning of the condensed product are respectively separated.

Establishment in a cylindrical-conical hydrocyclone in its conical part at a distance of 1 / 2-2 / 3 of its height from the base of the annular insert casing chamber c. with a water supply pipe and a calibration cylinder-parabolic rod located along the axis, it is possible to carry out the most rough and fine cleaning of the material to be separated when an additional stream of water is supplied. Depending on the required quality of the separation products, the apparatus can be adjusted in the reverse order, with the material being separated at a higher boundary size.

The calibration cylinder-parabolic rod provides an increase in the volume utilization coefficient in the area of the location of the vortex chambers, interconnected by a conical insert, which intensifies the action of centrifugal forces and increases the efficiency of rough and fine cleaning of the material to be separated.

Figure 1 is a perspective view of a mineral processing apparatus; figure 2 - section aa in fig. 1.

(AND

WITH

00

about

00

s s u

The apparatus consists of cylinder-conical hydrocyclones 1 and 2. interconnected by a transition pipe 3. The hydrocyclone 1 consists of a cylindrical chamber 4 with a tangential inlet pipe 5 and a drain nozzle 6, a conical chamber 7, in the lower part of which there are vortex chambers 8 and 10, interconnected by a conical insert 9, a calibration cylinder-parabolic rod 11. The hydrocyclone 2 consists of a cylindrical part 12 with a drain nozzle 13 and a conical part 14 with a sand nozzle 15.

A mineral enrichment apparatus operates as follows.

The initial power is supplied through the tangential pipe 5 to the cylindrical chamber 4. Under the influence of the hydrodynamic pressure of the stream, particles with a particle size of - 0.074 mm are unloaded through a drain nozzle 6. Under the action of centrifugal force, particles with a particle size of more than 0.074 mm are discarded to the wall of the apparatus and move downward towards the conical 7. Reducing the diameter of the conical part from the upper (larger) base to the lower (smaller) promotes thickening of the material. The thickened material is transported to the vortex chamber 8 by an additional stream of water, where the main purification of the thickened product of the first stage of the process takes place. A part of light particles with a particle size of less than 0.074 mm is reached on the conical insert 9 and then enters the vortex chamber 10, where finer purification of the condensed product of the first stage in the class of 0.074 mm takes place.

Depending on the characteristics of the starting material, using the replaceable calibration cylindrical-parabolic rods 11, the flow ratio is preliminarily adjusted in

drain 6 and transitional 3 nozzles, ensuring efficient flow of the material separation process in a centrifugal apparatus.

The condensed product of the first hydrocyclone through the transition pipe 3 is sent to the cylindrical chamber 12 of the hydrocyclone 2. B, about the second hydrocyclone, the separation of the material occurs as in a conventional cylindrical apparatus. Under the influence of the hydrodynamic pressure of the flow, particles with a particle size of 0.074-0.3 mm are discharged through a discharge chamber 13.

Under the action of centrifugal force, the remaining part of the material is discarded to the apparatus wall and transported in a downward flow to the conical part 14, where the material thickens and the condensed product is unloaded with a grain size of + 0.3 mm through the sand nozzle 15.

The invention improves the classification efficiency of the material by 9.2%.

Formula of the invention

A mineral enrichment apparatus, comprising a hydrocyclone for separating a starting material with a purging chamber located in its lower part and communicating therewith with a cylindrical portion of a purging cylindrical-conical hydrocyclone, communicating with it in order to increase the separation efficiency, a hydrocyclone for separation of the starting material is cylindrical with installed in the conical part at a distance of 1 / 2-2 / 3 of its height from the base of the cleaning chamber of the annular insert minutes with vodopodvod conductive pipe and disposed on calibration tsilindroparabolicheskim pivot axis.