SU1793055A1 - Process of formation of disposal area for overburden rock - Google Patents

Description

The invention relates to the mining industry and can be used in three open pit mining.

The purpose of the invention is the acceleration of remediation work on the dump while reducing the area of disposal for 'dumps.

Figure 1 shows the scheme of stripping with simultaneous reclamation of the surface of dry dumps; NC 1> Ig.2 - scheme for the allocation of sludge from the pulp using three hydrocyclone.

The method is as follows.

The step 1 of loose deposits is developed by means of a hydraulic monitor 2 by a jet of zoda. Blurred soil flows by gravity to sump 3. Using a suction pump 4, the pulp is taken from sump 3 and sent via slurry pipe 5 to distribution pipe b, which places the pulp in the dump 7. The lower ledges, which consist of half-rock 8, are developed, for example, by an excavator 9 and transported by dump trucks 10 to an external dry dump 11. When the dump section 11 reaches a nominal height, its surface is covered with thickened sludge (potentially fertile layer 12). To do this, in the section of the slurry pipeline 5 with a nominal distance from the blade 11, the condensed sludge is first extracted from the pulp in the sampling unit 13. The latter is a hydrocyclone 14, a suction pump 15 and a pump 16, interconnected by a system of pipelines and reservoirs. The pulp is taken from the slurry line 6 from below through a protective grill 17. The pulp enters the hydrocyclone 14 through the pipe 18 under pressure controlled by the valve 19, due to the pressure in the slurry line 5. The thickened slurry from the hydrocyclone enters the sludge collection tank 20, from where it is taken up by the suction pump 15 and through the pipeline 21 is pumped to the distribution pipe 22, which provides a layer

12. On the blade 11 serves as possible

1793055 A1

1793055 4 maximum condensed sludge in the ratio T: W - 1: .1-2, which does not require special measures for the management of waste water. At the border of the reclamation zone, embankment 23 (sills) is erected from semi-rock formations. The discharge of the hydrocyclone 14 is supplied to the reservoir 24, wherefrom the pump 16 is fed through the pipe 25 back to the slurry pipe 5 or through the pipe 26 to the hydraulic monitor 2 by supplying water to the pipe 27, through which clarified water is supplied from the hydraulic dump ?.

Claims (2)

Claim 1. Method for overburden dumping, including overburden dumping, transportation of pulp and its washing on the surface of the dump, treating with the fact that, in order to accelerate reclamation work on the dump while reducing disposal areas for hydraulic dumps , preliminarily, thickened sludge is isolated from the pulp in the ratio T: W = 1: 1-2, after which it is laid on the surface of the dump. 2. The method according to claim 1, characterized in that the thickened sludge is isolated by feeding pulp into a hydrocyclone.