The method of mining tailings

 

(57) Abstract:

The invention relates to mining, in particular to the development of the tailings processing plants. The method is characterized by the fact that contoured within the reclaimed tailings area with conditioned content of useful component work out mechanically using a tunneling shield used for sinking collectors under roads without breaking the surface layer of the earth, and separated conditioned sand hydrotransport sent to processing plant for the extraction of useful components. To prevent dilution of extracted conditioned Sands collapsing substandard sand in the waste chamber temporarily leave the lining which is removed after excavation of sand from the working chamber. After extraction supports stope is filled samoobuchayuschimsya substandard Sands tailings. The invention provides for reducing the cost of extraction of useful components of the conditioned Sands tailings. 3 Il.

The invention relates to mining, in particular to the development of dry tailings processing plants.

Known sposero and trucks (Y. Yu Rukavishnikov, V. Y. Rukavishnikov "Study of anthropogenic sediments and technology for their development," Coal", 3, 1989, pp. 16-20).

The known method development tailing along.with. 1642016, M. CL.7E 21 41/32, B. I. 14, 15.04.1991 adopted for the prototype on which the testing of lead layers from top to bottom stripes of a width equal to two radii of rotation of the body of the excavator with gross notch rich and poor Sands tailings, loading them into the vehicle and sent to the beneficiation plant.

The disadvantages of this method of development of the reclaimed tailings are:

1 - complete mining of the Sands tailings, which are extracted as conforming or not conforming Sands tailings, resulting in significant dilution of conditioned Sands rich areas;

2 - significant cost of extraction of useful components from razboieni Sands in the concentrator;

3 - the need for new tailings to tailings placement after processing of the poor Sands.

The invention aims to remedy these disadvantages, i.e. to reduce the development costs of the tailings.

The task of the tailings storage facility and transported to the beneficiation plant, pre-framing the area with conditioned content of useful components and its extension are mining the trench from which the lead chamber production of conditioned Sands using the tunneling shield, which hydrotransport sent to the concentrator; simultaneously with the production of installing a lining made from a single bonded together partitions; after the work of the working chamber shield extract, leaving the shield and remove the shield from the waste before the camera, which is filled samoobuchayuschimsya substandard Sands, and between it and the working chamber leave one pinned support the camera.

Analysis of the distribution of heavy rich fractions of tailings beneficiation plant within the tailings indicates that the most severe-rich fractions accumulate in places of discharge of tailings from the tailings dam and the farther you are from it the content of useful component in the tails is reduced. Thus within the tailing observed segregation of the material with the formation of local zones of conditioned ore containing useful components higher than the tailings pond. Local zone conditioned ores are deposited in a separate ically incision, Fig. 2. - longitudinal vertical section, Fig.3 is a plan of the drawings shows:

1 - pipeline to supply water to the tunnel complex;

2 - transporting pipeline;

3 - section lining;

4 - jacking station;

5 - working body of the tunneling shield;

6 - Sands with substandard content of useful components;

7 - Sands with conditioned content of useful components;

8 - mining trench;

9 - chamber filled with collapsed substandard Sands;

10 - proven camera with lining;

11 - working with the camera.

The method is as follows. Framing the area of the tailings with the conditional content of useful components 7 and its extension are trench 8 to install the tunneling shield, for example AVN German company Herreknecht GmbH applied for sinking collectors with a diameter of from 450 to 1500 mm and length up to 1.5 km without breaking the surface layer of the earth. The destruction of the Sands are mechanically with a rotating head, reinforced spicami from solid metals, the working body 5 tunnel shield AVN. Tunnel shield crush in the formation of conditioned Sands 7 by a powerful Jack 4, ustanavli the third round cross-section 3.

Simultaneously with nadavlivanie of shields 3 hydraulic jacks 4 produce mechanical destruction Sands working body 5; produced sand get inside the shields, where it is mixed with water coming through the pipeline 1, and the resulting slurry transport pipe 2 enters the concentrator. The shield is pushed onto the length of the shields, then the capacity of the new partition, and the production cycle is repeated. At the end of the testing chamber 10 start testing the next camera 11, and the shields of the previous waste chamber 10 does not retrieve and serve as a support, which excludes dilution Sands with conditional content of useful components. Removing the lining of the previous camera 10 takes place only after full testing of the next chamber 11, after which the mined-out area chamber 10 is filled with collapsed substandard Sands 9 tailings, that is, between the working chamber 11 and the chamber filled with the non-conforming Sands 9, leave one attached to the camera 10.

As a result of application of the proposed method is selective development of sand tailings with conditioned content of useful components that will allow ecosabotage tailings, including mechanical testing drained Sands tailings pond and transported to the beneficiation plant, wherein the pre-framing the area with conditioned content of useful components and its extension are mining the trench from which the lead chamber production of conditioned Sands using the tunneling shield, which hydrotransport sent to the concentrator, simultaneously with the production of installing a lining made from single bonded sections, after the work of the working chamber shield extract, leaving the shield and remove the shield from the waste before the camera, which is filled samoobuchayuschimsya substandard Sands, and between it and the working chamber leave one pinned support the camera.

 

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