CN217104025U

CN217104025U - Cold-proof combined collecting tank for leachate of heap leaching field in alpine and high-latitude areas

Info

Publication number: CN217104025U
Application number: CN202220404181.4U
Authority: CN
Inventors: 马平杰; 刘斌; 张化武; 于伟; 宋志伟; 王晓冬; 林强; 安路祺; 贾志恒; 张昊天; 张才思; 于淼; 田楠; 李泽嘉; 刘思圻
Original assignee: Changchun Gold Design Institute Co ltd
Current assignee: Changchun Gold Design Institute Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-02
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a severe cold high latitude area heap leaching field leach liquor winter protection combination collecting pit, including middle liquid bath and precious liquid bath, middle liquid bath and precious liquid bath are located the low reaches of heap leaching field, and middle liquid bath and precious liquid bath lower floor all fill the leachate that the porosity reaches more than 95% and collect storage module, upper strata and fill the ore that the particle size is 30 ~ 60mm, and middle liquid bath and precious liquid bath independent setting are kept away from with the heap leaching field. The utility model discloses a severe cold high latitude area heap leaching field leach liquor winter protection combination collecting pit, effectively guaranteed in cold winter the leach liquor can seepage flow smoothly in middle liquid bath and precious liquid bath, and guarantee that middle liquid bath and precious liquid bath leach liquor do not freeze, make heap leaching field leach liquor circulation unblocked, the area of middle liquid bath and precious liquid bath has been reduced simultaneously, volatilization of leach liquor in the precious liquid bath in summer has been avoided, reduce the consumption of sodium cyanide, liquid bath and precious liquid bath construction and production and application expense in the middle of having saved the high volume, environment and staff's health and safety have been protected.

Description

Cold-proof combined collecting tank for leachate of heap leaching field in alpine and high-latitude areas

Technical Field

The utility model relates to a coloured selection smelts technical field, especially relates to a cold-proof combination collecting pit of high and cold high latitude area heap leaching field leach liquor.

Background

The heap leaching process is one of non-ferrous dressing and smelting technological methods, and is suitable for large non-ferrous mines with lower grade. As a main process for treating low-grade copper ore, the method has the advantages of simple flow and low treatment cost, and is widely applied due to low grade of development resources. The process comprises the following steps: after the ores are piled up, copper leaching solution (acid circulating solution supplemented with new water and sulfuric acid) is sprayed on the ore piles, leaching liquid is leached and permeates downwards in the ore piles, copper-containing pregnant solution permeates to the bottom of a heap leaching field and is collected and conveyed by a collection and drainage system, and whether the copper-containing pregnant solution flows to an intermediate solution pool or a pregnant solution pool is determined by a leachate collecting pool according to the copper-containing grade of the leachate. The intermediate solution is continuously circulated to the storage yard for dripping, the pregnant solution in the pregnant solution pool is pumped to the extraction electrowinning room by a pump, and the barren solution after copper extraction is conveyed to the ore heap again for circular leaching.

However, in high-cold and high-latitude areas, due to the problem of liquid freezing in severe cold areas, production cannot be realized in winter, leachate in a heap leaching field cannot be normally collected and stored, and the process cannot normally work, so that the process technology is limited by areas. Therefore, the popularization and the application of the technology are limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a severe cold high latitude area heap leaching field leach liquor winter protection combination collecting pit solves the heap leaching field and can not normally produce in succession in cold areas technical problem, guarantees that the leach liquor is collected and stores and carry, makes the leaching solution can store in the smooth seepage flow of severe cold area to winter protection middle liquid pond and precious liquid pond in the heap leaching field, realizes continuous cycle leaching, ensures enterprise's safety in the whole year.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a cold-proof combination collecting pit of heap leaching field leachate in severe cold high latitude area, includes middle liquid pond and precious liquid pond, middle liquid pond and precious liquid pond are located the low reaches of heap leaching field, and middle liquid pond and precious liquid pond set up independently, and the heap leaching field is detached, middle liquid pond and precious liquid pond inner portion lower floor all fill the leachate collection storage module that the porosity reaches more than 95%, and the upper strata all is filled with the ore that the particle size is 30 ~ 60 mm.

Furthermore, the collecting and storing module is made of PP materials, and the porosity can reach more than 95% and the pressure-bearing performance can be selected.

Further, a collecting tank structure layer is arranged below the leachate collecting and storing module and sequentially comprises the following components from top to bottom: an isolation protective layer, a main impermeable membrane, a leakage detection layer, a secondary impermeable membrane and a protective layer.

Further, the isolation and protection layer is a geotechnical composite drainage net.

Further, the main impermeable membrane is an HDPE high-density geomembrane with a single rough surface and the thickness of 2 mm.

Further, the leakage detection layer is a geotechnical composite drainage network.

Further, the secondary impermeable membrane is a HDPE high-density geomembrane with a single rough surface of 1.5 mm.

Further, the protective layer is sodium bentonite waterproof blanket +300mm compacted gravel.

Compared with the prior art, the utility model provides a high and cold high latitude area heap leaching field leachate winter protection combination collecting pit through setting up its inside collection and store the module and go up the lower structure, has effectively guaranteed to store in middle liquid pool and the precious liquid pool of the smooth seepage of leaching solution can flow to in cold winter, makes the circulation of heap leaching field leachate unblocked. Meanwhile, the volatilization of the leaching solution in the intermediate liquid pool and the pregnant liquid pool in summer is avoided, the consumption of the medicament is reduced, high construction investment and production and application cost are saved, and the health and safety of the environment and staff are protected.

The utility model provides a severe cold high latitude area heap leaching field leach liquor winter protection combination collecting pit, the construction investment reduces, and the running cost is low, is applicable to the low-grade ore in severe cold high latitude area heap leaching field, has improved the utilization ratio of resource greatly, has filled the blank of the normal production in winter of the large-scale heap leaching mine of the coloured trade in internal cold area. Therefore, the application of the technology creates remarkable economic, social and environmental benefits for mines and society.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a plan view of a cold-proof combined collecting tank for leachate in a heap leaching field in an alpine and high-latitude area provided by the embodiment of the utility model;

fig. 2 is a cross-sectional view of an intermediate liquid pool or a precious liquid pool provided by an embodiment of the present invention.

Fig. 3 is a detailed structural diagram of a collecting tank structure layer provided by an embodiment of the present invention.

Description of reference numerals:

1. a heap leaching field; 2. an intermediate liquid pool; 3. a noble liquid pool; 4. a leachate collection and storage module; 5. ore; 6. a primary impermeable membrane; 7. a secondary impermeable membrane; 8. a leak detection layer; 9. a protective layer; 10. and isolating the protective layer.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

See FIGS. 1-3;

the utility model provides a cold-proof combined collecting pool for leachate in a heap leaching field in alpine and high latitude areas, which comprises a middle liquid pool 2 and a precious liquid pool 3, wherein the middle liquid pool 2 and the precious liquid pool 3 are both positioned at the downstream of the heap leaching field 1, and the middle liquid pool and the precious liquid pool are independently arranged and separated from the heap leaching field; the lower layers of the middle liquid pool 2 and the pregnant liquid pool 3 are both filled with a leachate collecting and storing module 4, the upper layer is filled with ores 5 with the grain diameter of 30-60 mm, and the porosity of the leachate collecting and storing module filled in the pools reaches more than 95%.

Specifically, a heap leaching field 1 is constructed in a cold area, a middle liquid pool 2 and a precious liquid pool 3 are arranged at the downstream of the heap leaching field 1, the construction excavation amount is reduced aiming at different depths and widths of the precious liquid pools in different areas, and the engineering investment is reduced in an effective service performance range. In addition, the effects in the leachate collecting and storing module 4 and the ore 5 in the cold-proof middle liquid pool 2 and the pregnant liquid pool 3 of the dump in the alpine and high-latitude areas are different, wherein the ore 5 at the top of the pool is a cold-proof layer, and the leachate collecting and storing module 4 at the bottom of the pool is a seepage collecting and storing layer, so that the cold-proof function is realized in winter, the leachate can smoothly seep in winter, the continuity of circulating liquid is ensured, and meanwhile, the leachate collecting and storing module 4 and the ore 5 can reduce the evaporation amount of the liquid and reduce the consumption of medicaments in summer.

Furthermore, the middle liquid pool 2 and the precious liquid pool 3 are also provided with a leakage detection system, so that the production safety performance is ensured.

As a preferred embodiment, the bottom of the intermediate liquid pool 2 and the precious liquid pool 3 is a collection pool structure layer, and sequentially laid from top to bottom: keep apart protective layer 10, main prevention of seepage membrane 6, seepage detection layer 8, inferior prevention of seepage membrane 7, protective layer 9, wherein, keep apart protective layer 10, specifically adopt geotechnological composite drainage network, main prevention of seepage membrane 6 chooses for use the thick HDPE high density geomembrane of single matte 2mm, seepage detection layer 8 chooses for use geotechnological composite drainage network, inferior prevention of seepage membrane 7 chooses for use the thick HDPE high density geomembrane of single matte 1.5mm, protective layer 9 chooses for use sodium bentonite waterproof blanket +300mm compacted sand.

Specifically, in the use process, HDPE high-density geomembranes with the thickness of 2mm at the bottoms of the middle liquid pool 2 and the pregnant liquid pool 3 are broken, and the leachate flows into the seepage detection layer geotechnical composite drainage network, so that whether the leachate collection pool 2 in the heap leaching field leaks or not is detected. And the HDPE high-density geomembrane with the thickness of 1.5mm at the lower layer is used as a leakage protective layer, a sodium bentonite waterproof blanket and 300mm compacted sand which are paved below the HDPE high-density geomembrane with the thickness of 1.5mm are also used as the leakage protective layer, so that the use safety of the leachate collecting tank 2 of the heap leaching field is ensured.

The utility model discloses a high and cold high latitude area heap leaching field leachate winter protection combination collecting pit, the effectual continuity of producing in leachate winter that has solved improves the production efficiency of heap leaching technology greatly, has also reduced workman's intensity of labour simultaneously, reduces the consumption of medicament, has saved high-priced construction investment and production and application expense, has protected environment and staff's health and safety.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. A cold-proof combined collecting pool for leachate of a heap leaching field in alpine and high-latitude areas is characterized by comprising an intermediate liquid pool and a pregnant solution pool, wherein the intermediate liquid pool and the pregnant solution pool are both positioned at the downstream of the heap leaching field, and the intermediate liquid pool and the pregnant solution pool are independently arranged and separated from the heap leaching field; the lower layers of the middle liquid pool and the inner part of the pregnant liquid pool are both filled with leachate collecting and storing modules with the porosity of more than 95%, the collecting and storing modules are made of PP materials, and the upper layers are both filled with ores with the particle size of 30-60 mm.

2. The cold-proof combined collecting pond for leachate in the heap leaching field in the alpine and high latitude areas according to claim 1, wherein a collecting pond structure layer is arranged below the leachate collecting and storing module, and the collecting pond structure layer comprises the following components in sequence from top to bottom: an isolation protective layer, a main impermeable membrane, a leakage detection layer, a secondary impermeable membrane and a protective layer.

3. The combined cold-proof collecting pond for leachate from a heap leaching field in alpine and high-latitude areas according to claim 2, wherein the isolation and protection layer is a geotechnical composite drainage net.

4. The combined cold-proof collecting pond for leachate from a dump leaching site in an alpine and high latitude area according to claim 2, wherein the main impermeable membrane is HDPE high-density geomembrane with a single rough surface and a thickness of 2 mm.

5. The combined cold-proof collecting pond for leachate in the heap leaching field in the alpine and high-latitude areas according to claim 2, wherein the leakage detection layer is a geotechnical composite drainage network.

6. The combined cold-proof collecting pond for leachate from heap leaching sites in alpine and high-altitude areas according to claim 2, wherein the secondary impermeable membrane is a HDPE high-density geomembrane with a thickness of 1.5mm on a single rough surface.

7. The combined cold-proof collecting pond for leachate in the heap leaching field in the alpine and high-altitude areas of claim 2, wherein the protective layer is a sodium bentonite waterproof blanket and 300mm compacted gravel.