SU1565945A1 - Method of storing waste of enrichment mills - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering. The purpose of the invention is to increase the storage efficiency by increasing the capacity of the tailings storage facility and reducing the cost of waste disposal by increasing the slope angle of the washed tailings by reducing the kinetic energy of the pulp during the washing process. When the future bowl is washed inside the contour 1, a drainage system 2 is created with the installation of vertical filters 3 and connected with a collector 4 with a settling pond 5. Alluvium of tailings is carried out in cones with the placement of large tail fractions in the central part of the cones. The free water is discharged outside the washed part of the tailing dump by a drainage system 2 and surface channels formed between the surface of the cones and the upper slope of the dam and between the intersecting surfaces of the cones. For separate placement of a large fraction of tails in the center of the cones, a distribution device is used, including a pulp-receiver, located on top of a cone-shaped working surface. In the lower part of the working surface of the device, slits with protruding ribs are arranged. 8 il.

Description

The invention relates to hydraulic construction, in particular to the storage of waste (tailings) of enrichment plants, mainly ore-enrichment.

The purpose of the invention is to increase the storage efficiency by increasing the capacity of the tailings and reducing the cost of waste disposal by increasing the angle of laying slopes of the washed tailings by reducing the kinetic energy of the pulp during the process of washing.

Figure 1 shows the final phase of the construction of the drainage system of the tailings dam, plan; 2 shows the final phase of creating a dike, the plan of FIG. 3 shows the final phase of the peripheral row of cones from tailings, enrichment, the plan; FIG. 4 is a section A-A in FIG. 3; Fig. 5 shows the final phase of the complete filling of the tailing dump with tailings, plan; Fig. 6 is a section B-B in Fig. 5; in Fig. 7 a cone-shaped umbrella dispensing pulp, side view, combined with a vertical incision; in Fig.8 - node I in Fig.6.

The method is carried out as follows.

First, a drainage system 2 is created inside the contour. I, of the future or existing bowl, with the installation of vertical filters 3 (FIG. 1) and connecting it with a collector 4 to a settling pond 5, located outside the tailing pond. Then, the dam 6 is raised to the predetermined elevation along the entire contour 1 of the tailings (Fig. 2). Distribution slurry pipe 7 is laid on the crest of the dam 6 and connected to the main slurry pipeline 8. Slurry outlets 9 (Fig. 3), lengths, diameters and distances between them, depending on length, perimeter of the dam, the flow rate of the pulp supplied to the tailings storage facility and the required angle of laying of the generatrix of the alluvial cone. Pulp outlets 9 are placed on vertical supports (not shown). In order to evenly distribute the solid part of the pulp through the pulp outlets 9, the latter are cut into the distribution pulp line 7 at different levels vertically (not shown). Dam wells 10 are constructed near dam 6 hydraulically with drainage system 2. Divers 6 wash peripheral row 11 cones 12 from tails 13 separated from pulp 14 to form between surface 15 of cones 12 and the upper slope 16 of dam 6 channel 17 (fig.Z and 4) for removal of surface water 18 with fine tails. At the same time, in the central part of the cones 12, tails of the coarse fraction 19 are laid in order to separate part of the water from the discharged pulp 14 and drain it into the drainage system 2, while smaller fractions 20 of the tails are deposited in the peripheral part of the cones. Drainage water in the center of each cone is also removed through a vertical filter 3, which is a perforated metal pipe, the lower part of which is connected to the drainage system 2. This filter grows up as the height of the washed cone rises. Stream 21, which includes surface water 18 with fine tailings and infiltration (leaked through a cone of washed tailings and a filter) water 22, is discharged through a collector 4 into a settling pond 5 (FIG. 3). After the first (peripheral) row is washed, 11 cones 12 are washed inside.

row 23 and 24 cones 25 (fig. 5, 6), for which they increase pulp outlets 9. Moreover, the inner rows 23 and 24 of cones 25 are washed above the peripheral row 11 with the formation of channels 26-28 between the intersecting surfaces 15 and 29 cones 12 and 25, which serve for removal of surface water with fine tails. The infiltration water 22 is diverted through the filter 3 and through the body of the cone into the drainage system 2, the drains 30 of which are laid under the base of each cone 12 and 25.

For separate placement of coarse fractions of tails in the central part of the cone, a distribution device is used — an umbrella 31 (FIG. 7), which includes a pulverim 32 located on the conline of the umbrella 33 of the umbrella and rigidly connected to the surface 33 of the umbrella by metal plates 34. In the side of the pulp receiver there is an opening 35 for introducing the pulp outlet 9, and on top it is closed by a cover 36. With the help of a guide ring 37 attached to the pulp receiver 32 by plates 38, the pulp receiver is fixed to the filter e 3. In the center of the umbrella 31- there is a pipe 39 on the floor, rigidly connected to the inside of the working surface 33 of the umbrella by metal plates 40. Using a pipe 39, they put an umbrella 31 on the filter 3, and fix the lower part of the pipe 39 to the filter 3 with a collar 41, Between the pulp receiver 32 and the working surface 33 of the umbrella there is an adjustable slot 42, which serves to evenly feed the pulp 14 from the pulp outlet 9 to the working surface 33 of the umbrella 31. At the bottom of the working surface 33 of the umbrella 31 there are slots 43 with protruding ribs 44 above and below the working surface 3 3 umbrellas (Fig. 8), oriented across the stream of pulp 45 flowing down over the working surface 33. To ensure wear resistance of the umbrella, its surface is covered with a resistant coating. Arrows 46 and 47 show the directions of the pulp flow, respectively, with coarse and fine fractions of tailings.

Filter 3 has holes 48 through which water passes, but fine-grained tails do not pass. The bottom of the filter rests on the bottom of the ba

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49 drains 30. At the bottom of the filter 3, there are openings 50 for the passage of water from filter 3 to the drain 30 (Fig. 7). Tray 49 is closed from above with reinforced concrete box 51 so that slots 54 are formed between vertical ribs 52 and 53, respectively, of tray 49 and duct 51, through which the draining water 22 enters tray 49. The ribs 53 abut against the drainage material 55 at half the height of the ribs 52 of the tray 49.

A device that implements the method works as follows.

Pulp-receiver 32 with an umbrella 31 is mounted on the filter 3 and secured with a ring 37 and a collar 41, respectively, in the upper and lower parts of the filter. Then, the pulp-outlet end 9 is introduced into the pulpoprime receiver 35. The pulp 14 is fed to the pulp puller 32 of the umbrella 31, from where part of the water from the pulp through the holes 48 of the filter 3 passes into the drainage system 2, and the pulp 45 through the slit 42 (FIG. 7) between the working surface 33 and the pulp receiver 32 flows into the lower part of the working surface, where as it progresses, the pulp is divided into two streams: pulp stream L with a large fraction of tails and stream 47 with a higher content of fine fraction of tails. Hitting the ribs 44, located under the working surface 33, the pulp stream with a large fraction of tails is guided through slots 43 under the working surface 33 of the umbrella and the tails of the large fraction 19 settle in the center of the cone (figure 4), forming an artificial vertical drain. The water 22 draining through the body of the cone enters the slots 54 between the tray 49 and the duct 51 of the drain 30, enters the tray and is removed beyond the tail storage. As the tail cone grows, the umbrella is moved upwards along the axis 56 of the winding cone, for which the filter is extended upwards along the vertical.

If there are only large fractions in the stored tails, the installation of a filter in the body of the cone is not necessary. In this case, 3-4 tubular legs are attached to the umbrella, with which it rests on the tails.

Claims (1)

Invention Formula The method of storage of waste of concentrating factories, including the construction of the enclosing dam along the contour of the tailings storage facility, the construction of a drainage system in the tailings storage facility, the washing of the tailings with cones in the tailings cone-shaped slit umbrellas hydraulically connected to the drainage system are used to wash the cones from the tailings in rows, while at the beginning they wash the cones along the dam and adjacent to it, and the washing of the cones of each internal row is carried out above the cones of storage with the placement of large frac-, the previous row, and the surface diy tails in the central part of each cone and removal of water from the reclamation zone, characterized in that, in order to increase efficiency by increasing the tailing storage capacity and reducing waste disposal costs by increasing the slope angle of the washed tailings by reducing the pulp kinetic energy the process of washing, in the center of the future cones install vertical filters with moving 15 20 all washed cones are intersected with each other and the formation of surface channels, the pulps at the top of each washed bones are evenly distributed along its breaking and large tails are placed in the central part of each cone using an umbrella, and removal to the alluvial zone is carried out through a vertical filter and a cone body drainage system and through surface channels into the catchment wells. J -2 & & YY 3 | one ° I tr.Lr ЈZ ° -jojr jn zptni. d Л1Г .L. If H% I 7f all washed cones are intersected with each other and the formation of surface channels, the pulp at the top of each washed cone is distributed evenly along its generatrix and large tail fractions are placed in the central part of each cone using an umbrella, and the water is removed from the wash zone through vertical the filter and the cone body into the drainage system and through the surface channels into the catchment wells. 0US.J B gff 0Ј g22 //////// s / s S /// S ////// U / g44 & /// y Јglf V-v 5,765951 P 3 is rn yy Fie.6 Phage. five 12 9 w J7 38 36 .XX /. Fig.8