CN108974734B - Waste liquid collecting system of open-air concentrating mill - Google Patents
Waste liquid collecting system of open-air concentrating mill Download PDFInfo
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- CN108974734B CN108974734B CN201810902018.9A CN201810902018A CN108974734B CN 108974734 B CN108974734 B CN 108974734B CN 201810902018 A CN201810902018 A CN 201810902018A CN 108974734 B CN108974734 B CN 108974734B
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- waste liquid
- submerged pump
- slope
- waste
- ramp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F5/00—Gathering or removal of refuse otherwise than by receptacles or vehicles
Abstract
The application discloses a waste liquid collecting system of an open-air concentrating mill, which comprises: a weir defining a waste collection area, the waste collection area being formed as a ramp; the basic equipment is arranged in the waste liquid collecting area; the waste liquid collection unit, the waste liquid collection unit is established the lowest department of slope, the waste liquid collection unit includes: a submerged pump basin, wherein an opening is arranged on the wall of the submerged pump basin and is suitable for collecting waste liquid on the slope through the opening; the submerged pump is arranged in the submerged pump pool and is suitable for outputting the waste liquid in the submerged pump pool; the liquid level meter is arranged in the submerged pump pool and is suitable for detecting the liquid level of the waste liquid in the submerged pump pool, and based on the display of the liquid level meter, the submerged pump is turned on and off. The system can realize timely recovery of waste liquid, avoid leakage, and indirectly promote the recovery rate of metal through recycling of the waste liquid.
Description
Technical Field
The application belongs to the field of resource recycling, and particularly relates to a waste liquid collecting system of an open-air concentrating plant.
Background
Open-air concentrating mills have few domestic design examples, but with the ever-improving and stringent environmental regulations associated with mine development, the requirements for the collection and recycling of the waste produced during the concentrating process are becoming increasingly stringent. In the mineral separation process, the overflow and leakage of ore pulp and the artificial emptying of equipment are inevitably caused by the fluctuation of ore pulp flow, the long-time abrasion of equipment and pipelines, the loose connection between equipment and pipelines, the need of overhauling in sudden accidents and other reasons. Under the condition of no treatment measures, only the ore pulp can flow everywhere on the surface of the process area and leak underground, and when serious, the ore pulp flows into the peripheral water body and is immersed into the underground water, so that certain pollution is caused to the peripheral water environment. And the working environment of workers is also deteriorated, and a great deal of time and manpower are required for cleaning.
The conventional design of domestic open-air concentrating mills generally adopts a mode that a trench automatically flows to a sewage pump pit for collecting waste liquid in each sub-process zone (such as a grinding zone, a sorting zone, a dewatering zone and the like according to the main purpose of the process flow), and a certain gradient is arranged on a terrace towards the trench. The defects are as follows: (1) the pump pit has small volume, and the pump pit is difficult to have enough buffer time when an emergency stop or ore drawing accident is needed; (2) the sewage pump is submerged due to the fact that the pump is not delivered, and the sewage pump fails; (3) the trench is easy to be blocked and difficult to be cleaned at ordinary times; (4) no cofferdam is arranged around the water and soil environment pollution, etc. Because the waste liquid generated in the nonferrous ore dressing production process usually contains nonferrous metal elements and low-toxicity or toxic dressing agents, water and soil pollution can be caused by any flowing to the external surrounding environment, and waste of valuable metals and even noble metals in the waste liquid can be caused.
Thus, the existing technology for collecting waste liquid from open-air concentrating mills needs to be further improved.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present application is to propose a waste liquid collection system for an open concentrating plant. The system can realize timely recovery of waste liquid, avoid leakage, and indirectly promote the recovery rate of metal through recycling of the waste liquid.
In one aspect of the application, the application provides an open air concentrating plant effluent collection system, according to an embodiment of the application, comprising:
a weir defining a waste collection area, the waste collection area being formed as a ramp;
the basic equipment is arranged in the waste liquid collecting area;
the waste liquid collection unit, the waste liquid collection unit is established the lowest department of slope, the waste liquid collection unit includes:
a submerged pump basin, wherein an opening is arranged on the wall of the submerged pump basin and is suitable for collecting waste liquid on the slope through the opening;
the submerged pump is arranged in the submerged pump pool and is suitable for outputting the waste liquid in the submerged pump pool;
the liquid level meter is arranged in the submerged pump pool and is suitable for detecting the liquid level of the waste liquid in the submerged pump pool, and based on the display of the liquid level meter, the submerged pump is turned on and off.
According to the waste liquid collecting system of the open-air concentrating plant, provided by the embodiment of the application, the waste liquid can be prevented from flowing everywhere by arranging the cofferdam; the slope can prevent the leakage of the waste liquid, and simultaneously can drain the waste liquid to the submerged pump so as to return the waste liquid to the process flow, and meanwhile, the design of the trench is canceled, so that the problem that the trench is easy to block and difficult to clean is avoided; because the equipment in the basic equipment belongs to the same sub-process area, the pulp emptied by the equipment in the area, leaked pulp, medicaments, water and other liquids can be combined and returned to the process flow, and independent treatment is not needed, so that the treatment process of the whole system is reduced, and the energy consumption of the system is reduced; the waste liquid on the slope is collected through the holes on the pool wall of the submerged pump, so that the waste liquid on the slope can be collected and treated in time; the submerged pump adopts the liquid level meter to control to realize automatic start and stop, can in time return the waste liquid that collects in the submerged pump pond to the technological process, avoids appearing because of the pump is not reaching the condition that the submerged pump was submerged inefficacy that leads to, improves manual operation environment, contains valuable metal even noble metal in the waste liquid simultaneously, has consequently indirectly promoted the rate of recovery of metal.
In addition, the waste liquid collection system of the open air concentrating plant according to the embodiment of the application can also have the following additional technical characteristics:
in some embodiments of the application, the height of the cofferdam is 100-500mm. Thus, the waste liquid can be prevented from flowing around.
In some embodiments of the application, the volume of the waste collection region is at least 110% of the maximum volume of the base unit. Thereby, it is advantageous to optimize the footprint of the system.
In some embodiments of the application, the base device is at least one of a mill, a stirred tank, a pump sump, a sorting device, a thickener, a filter press, a conduit between devices.
In some embodiments of the application, the distance of the outer wall of the foundation apparatus from the cofferdam is not less than 2000mm. Thereby, the footprint of the system may be further optimized.
In some embodiments of the application, the slope is no less than 3%. Thereby, the collection efficiency of the waste liquid is improved.
In some embodiments of the application, a plurality of the waste liquid collection units are provided at the lowest part of the slope. Thereby, the waste liquid treatment bearing capacity of the system is improved.
In some embodiments of the application, the submerged pump is turned on when the level gauge shows 85% above the depth of the submerged pump sump. Therefore, the problem that the submerged pump is submerged due to the fact that the submerged pump cannot transport waste liquid can be avoided.
In some embodiments of the application, the submerged pump is turned off when the level gauge shows 20% less than the depth of the submerged pump sump. Thereby, the energy consumption of the submerged pump is reduced.
In some embodiments of the application, the ramp comprises a first ramp and a second ramp, and the waste collection unit is disposed at a lowest point where the first ramp and the second ramp meet. Thus, the collection efficiency of the waste liquid can be further improved.
In some embodiments of the application, the submerged pump pool top is no more than 1100mm from the ramp, and this height minus the height of the cofferdam is no more than 600mm. Therefore, the amount of earthwork excavation can be reduced.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a top view of an open air concentrating plant effluent collection system according to one embodiment of the application;
FIG. 2 is a cross-sectional view of a surface mill effluent collection system according to yet another embodiment of the application;
FIG. 3 is an enlarged partial sectional view in the direction A of a waste collection unit in a waste collection system of an open air concentrating plant according to yet another embodiment of the present application;
fig. 4 is an enlarged partial B-direction cross-sectional view of a waste collection unit in a waste collection system of an open air concentrating plant according to yet another embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In one aspect of the application, the application provides an open air concentrating plant effluent collection system, according to an embodiment of the application, with reference to fig. 1-4, comprising: cofferdam 100, foundation apparatus 200, and waste collection unit 300.
According to an embodiment of the application, cofferdam 100 defines a waste collection area 11, waste collection area 11 being formed as a ramp 12. In particular, the slope is a processed slope which can prevent leakage of waste liquid, and can be a cement hardened slope ground. Compared with the existing untreated ground surface, the slope can prevent waste liquid from penetrating into the underground to pollute the water and soil environment. Under the combined action of the cofferdam and the slope, the waste liquid in the waste liquid collecting area can flow to the waste liquid collecting unit in a timely and concentrated manner, so that the waste liquid is prevented from flowing everywhere, the operation environment is deteriorated, and even the surrounding water and soil are polluted. Through the design of slope in the waste liquid collecting area to utilize the gravity effect of waste liquid self, the waste liquid can be followed the slope from the flow direction waste liquid collecting unit, reaches the purpose of collecting the waste liquid, with current technique through the trench drainage, can avoid appearing the trench and stop up the problem that is difficult to the clearance.
According to one embodiment of the application, the height h of the cofferdam can be 100-500mm. The inventor finds that the cofferdam can improve the volume of the waste liquid collecting area and prevent the waste liquid from flowing everywhere. When the cofferdam occupies a certain area, the height is too low, the volume is smaller, and the requirement of waste liquid or accident emptying in the production process is difficult to be completely met; when the height of the cofferdam is too high, the redundant part is equivalent to the increase of the construction cost after meeting the volume required by production, and the crossing and passing of operators are not facilitated.
According to still another embodiment of the present application, the slope of the slope may be not less than 3%. The inventors found that if the slope of the slope is too small, the speed of the waste liquid flowing to the waste liquid collecting unit under the self gravity becomes slow, which is unfavorable for the collection of the waste liquid in the waste liquid collecting area, and as the slope of the slope increases, the speed of the waste liquid flowing to the waste liquid collecting unit increases. The gradient of the slope is a basic condition that ore pulp and waste liquid on the surface of the slope can automatically flow under the gravity condition, the larger the gradient of the slope is, the less mineral is easy to deposit on the surface of the slope, and 3% is the minimum requirement determined empirically. And the foundation equipment is placed on the equipment foundation, and the equipment foundation is stable and smooth, so that the equipment is fixed irrespective of the gradient of a slope.
According to an embodiment of the application, the base device 200 is provided in the waste collection area 11. Specifically, the whole waste liquid collecting system is built around the foundation equipment, and the capacity of the foundation equipment determines the volume of the waste liquid collecting area, namely the height of the cofferdam and the distance between the outer wall of the foundation equipment and the cofferdam. The basic equipment generally belongs to the same sub-process area (the area divided according to the main purpose of the process flow, such as an ore grinding area, a sorting area, a dewatering area and the like), so that the waste liquid collected in the waste liquid collecting area can be combined and returned to the basic equipment without separate treatment, thereby improving the recovery rate of valuable metals in the waste liquid and even noble metals and reducing the equipment investment of the system.
According to one embodiment of the present application, the base apparatus is not particularly limited, and one skilled in the art may select according to actual needs, and for example, the base apparatus may be at least one of a mill, a stirring tank, a pump tank, a sorting apparatus, a thickener, a filter press, and a pipe between apparatuses. As long as the basic equipment for completing the same function is ensured to be in the same sub-process area, the combination and recycling of the waste liquid are realized.
According to yet another embodiment of the application, the volume of the waste collection region may be at least 110% of the maximum volume of the base unit. Specifically, the volume of the waste liquid collection area refers to the volume left by the removal of the space occupied by the base unit. The inventor finds that if the volume of the waste liquid collecting area is too small, if the basic equipment fails and needs to be emptied in an emergency, the waste liquid flows out of the waste liquid collecting area to pollute the surrounding water and soil environment.
According to a further embodiment of the application, the distance of the outer wall of the foundation device from the cofferdam may be not less than 2000mm. Specifically, when the site area of the open-air concentrating plant is limited so that the volume of the waste liquid collecting area is less than 110% of that of the basic equipment, the distance between the outer wall of the basic equipment and the cofferdam can be selected to be not less than 2000mm. The inventors found that, according to the general case, the height of the overflow edge of the apparatus was assumed to be 20m, the velocity in the horizontal direction of the overflow was assumed to be 1m/s, and the overflow moved in a parabolic path, the distance from the edge of the apparatus when contacting the ground was 2000mm.
According to an embodiment of the present application, the waste liquid collecting unit 300 may be provided at the lowest position of the slope 12. Therefore, the purpose of fully collecting the waste liquid in the waste liquid collecting unit can be achieved by fully utilizing the gravity action of the waste liquid. According to an embodiment of the present application, the slope may include a first slope and a second slope, and the waste liquid collecting unit may be provided at a lowest point where the first slope and the second slope meet. The inventor found that the waste liquid collecting unit is arranged at the edge of the cofferdam for convenient maintenance. According to one embodiment of the application, when the waste liquid collecting unit is positioned at one corner of the cofferdam, the waste liquid collecting unit and the slope have two intersecting lines, and by arranging the two slopes, ore pulp or waste liquid can be drained to the waste liquid collecting unit, so that the waste liquid deposition position is a point. If the slope is inclined to one side of the waste liquid collecting unit along one direction, the waste liquid deposition position is a surface area, which is unfavorable for the collection and return flow of the minerals deposited in the waste liquid. When the submerged pump is located the middle part of cofferdam one side, the intersection of waste liquid collection unit and slope has three, then the quantity of slope can be set to three to make waste liquid collection unit be located the slope minimum. According to still another embodiment of the present application, the gradients of the first slope and the second slope may be not less than 3% respectively and independently. The inventor finds that the minimum gradient requirement of the slope, the overhaul requirement of the waste liquid collecting unit and the elevation requirement of the lowest point inside the cofferdam need to be met when the slope is arranged, so that the slope gradient difference is common, and the existing difference is more beneficial to the slope to meet the conditions. According to a further embodiment of the application, the lowest part of the slope may be provided with a plurality of waste liquid collection units. Therefore, the requirement on the waste liquid bearing capacity of a single waste liquid collecting unit can be reduced, and the flexibility of collecting and recycling the waste liquid of the system is improved.
According to an embodiment of the present application, the waste liquid collecting unit 300 includes: a submerged pump tank 31, a submerged pump 32 and a level gauge 33. According to one embodiment of the application, an aperture 301 is arranged in the wall of the submerged pump basin 31 and is adapted to collect waste liquid on the slope through the aperture. Specifically, the horizontal plane where the lowest point of the submerged pump pool in the vertical direction is located can be lower than the horizontal plane where the lowest point of the slope is located, and the lowest point of the opening on the wall of the submerged pump pool can be lower than the junction of the opening and the slope, so that waste liquid on the slope can flow into the submerged pump pool through the opening directly, and the collected waste liquid is realized under the action of no external force. It should be noted that the number and the positions of the holes on the wall of the submerged pump tank are not particularly limited, and those skilled in the art can select according to actual needs, for example, when the periphery of the submerged pump tank is not adjacent to the cofferdam, the periphery of the submerged pump tank can be perforated, so that the waste liquid around the submerged pump tank can flow into the pump tank timely and smoothly.
According to yet another embodiment of the application, the distance H of the submerged pump pool top from the ramp in the vertical direction may be not more than 1100mm and this height minus the height of the cofferdam is not more than 600mm. The inventors have found that the submerged pump shaft length typically used in the design is close to this distance H, slightly different, but can be adjusted according to the depth of the submerged pump sump. Too high a height results in an increase in the amount of excavation and is unnecessary. It should be noted that, the position and number of the submerged pump tanks are not particularly limited, and a person skilled in the art can determine the position and number of the submerged pump tanks by combining the gradient of the slope and the distance from the top of the submerged pump tanks to the slope in the vertical direction, according to a specific embodiment of the present application, the gradient of the slope is determined to be 3% according to the mineral sedimentation property in the waste liquid, the height of the cofferdam above the ground is 500mm, the distance from the intersection of the submerged pump tanks and the slope to the top of the submerged pump tanks is 1100mm, the height from the intersection of the submerged pump tanks and the slope to the ground is 600mm, the horizontal distance from the inclined side of the first slope to the submerged pump tanks is 20mm, and when the horizontal distance from the inclined side of the second slope to the position is greater than 20mm, the number of the submerged pump is increased until the minimum gradient requirement, the maintenance requirement of the submerged pump and the minimum point elevation requirement inside the cofferdam are satisfied.
According to a further embodiment of the application, a submerged pump 32 is provided in the submerged pump basin 31 and is adapted to output waste liquid from the submerged pump basin, whereby the recovery of nonferrous metals and even precious metals in the waste liquid can be improved by collecting waste liquid leaking from the base unit onto the slope and returning the collected waste liquid output to the base unit.
According to a further embodiment of the application, a level gauge 33 is provided in the submerged pump basin 31 and is adapted to detect the level of waste liquid in the submerged pump basin and, based on the display of the level gauge, the submerged pump is turned on and off. Specifically, according to one embodiment of the application, when the liquid level gauge shows that the depth of the submerged pump pool is 85% higher, the submerged pump is started, and the waste liquid in the submerged pump pool is conveyed to the basic equipment, so that the problem that the submerged pump fails due to too much overflow of the waste liquid in the submerged pump pool is avoided. According to a further embodiment of the application, the submerged pump is turned off when the gauge shows a depth of 20% below the depth of the submerged pump sump, whereby the submerged pump is protected from idling and the energy consumption of the waste liquid collecting unit is saved.
According to the waste liquid collecting system of the open-air concentrating plant, provided by the embodiment of the application, the waste liquid can be prevented from flowing everywhere by arranging the cofferdam; the slope can prevent the leakage of the waste liquid, and simultaneously can drain the waste liquid to the submerged pump so as to return the waste liquid to the process flow, and meanwhile, the design of the trench is canceled, so that the problem that the trench is easy to block and difficult to clean is avoided; because the equipment in the basic equipment belongs to the same sub-process area, the pulp emptied by the equipment in the area, leaked pulp, medicaments, water and other liquids can be combined and returned to the process flow, and independent treatment is not needed, so that the treatment process of the whole system is reduced, and the energy consumption of the system is reduced; the waste liquid on the slope is collected through the holes on the pool wall of the submerged pump, so that the waste liquid on the slope can be collected and treated in time; the submerged pump adopts the liquid level meter to control to realize automatic start and stop, can in time return the waste liquid that collects in the submerged pump pond to the technological process, avoids appearing because of the pump is not reaching the condition that the submerged pump was submerged inefficacy that leads to, improves manual operation environment, contains valuable metal even noble metal in the waste liquid simultaneously, has consequently indirectly promoted the rate of recovery of metal.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (8)
1. An open air concentrating mill effluent collection system, comprising:
a weir defining a waste collection region, the waste collection region being formed as a ramp, the ramp comprising a first ramp and a second ramp;
the basic equipment is arranged in the waste liquid collecting area, the volume of the waste liquid collecting area at least accounts for 110% of the maximum volume of the basic equipment, the basic equipment is at least one of a mill, a stirring tank, a pump pool, a sorting equipment, a thickener, a filter press and pipelines among the equipment, and the basic equipment belongs to the same sub-process area;
the waste liquid collection unit, the waste liquid collection unit is established the first slope with the second slope meets the lowest department, the waste liquid collection unit includes:
a submerged pump basin, wherein an opening is arranged on the wall of the submerged pump basin and is suitable for collecting waste liquid on the slope through the opening;
a submerged pump provided in the submerged pump tank, for collecting the waste liquid leaked from the base apparatus onto the slope and returning the collected waste liquid output to the base apparatus;
the liquid level meter is arranged in the submerged pump pool and is suitable for detecting the liquid level of the waste liquid in the submerged pump pool, and based on the display of the liquid level meter, the submerged pump is turned on and off.
2. The system of claim 1, wherein the height of the cofferdam is 100-500mm.
3. A system according to claim 1 or 2, wherein the distance of the outer wall of the foundation device from the cofferdam is not less than 2000mm.
4. The system of claim 1, wherein the slope is not less than 3%.
5. The system of claim 1, wherein a plurality of said waste collection units are disposed at the lowest portion of said ramp.
6. The system of claim 1, wherein the submerged pump is turned on when the level gauge displays 85% above the depth of the submerged pump sump.
7. The system of claim 1 or 6, wherein the submerged pump is turned off when the level gauge displays 20% below the submerged pump sump depth.
8. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the submerged pump pool top is no more than 1100mm from the ramp, and this height minus the height of the cofferdam is no more than 600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902018.9A CN108974734B (en) | 2018-08-09 | 2018-08-09 | Waste liquid collecting system of open-air concentrating mill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810902018.9A CN108974734B (en) | 2018-08-09 | 2018-08-09 | Waste liquid collecting system of open-air concentrating mill |
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| CN108974734B true CN108974734B (en) | 2023-10-13 |
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| CN108974734A (en) | 2018-12-11 |
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