CN215745471U - Dry tailing discharge system for nonferrous metal concentrating mill - Google Patents
Dry tailing discharge system for nonferrous metal concentrating mill Download PDFInfo
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- CN215745471U CN215745471U CN202122122543.9U CN202122122543U CN215745471U CN 215745471 U CN215745471 U CN 215745471U CN 202122122543 U CN202122122543 U CN 202122122543U CN 215745471 U CN215745471 U CN 215745471U
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- dewatering screen
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Abstract
The utility model discloses a dry tailing discharging system for a non-ferrous metal dressing plant, belongs to the field of non-ferrous metal dressing, and solves the problems of multiple equipment, complex process flow, high investment and difficult maintenance of the conventional dry tailing discharging device. The utility model comprises a feeding box, a tailing pond, a filtrate pool, a dewatering screen, a slurry pump and a filter press, and also comprises a dewatering screen and a tailing pond, wherein the feeding box is connected with a feeding port of the dewatering screen, a sand settling port of the dewatering screen is connected with the dewatering screen, an upper funnel of the dewatering screen is connected with the tailing pond through a first conveyor, a lower funnel of the dewatering screen is connected with the tailing pond, an overflow port of the dewatering screen is connected with the tailing pond, the tailing pond is connected with a feeding port of the filter press through the slurry pump, a filtrate outlet of the filter press is connected with the filtrate pool, and a discharge port of the filter press is connected with the tailing pond through a second conveyor. The method has the advantages of good dehydration effect and simple flow, reduces the tailing treatment cost and increases the income of mine enterprises.
Description
Technical Field
The utility model belongs to the field of non-ferrous metal ore dressing, and particularly relates to a dry tailing discharging system for a non-ferrous metal ore dressing plant.
Background
The traditional tailing discharge mode at present adopts full tailing discharge (also called wet discharge): and (3) directly conveying the tailings from the grinding and floating workshop to a tailing pond through a conveying pipeline for storage, naturally settling the tailings in the tailing pond, and then conveying the backwater to a separation plant for recycling by a backwater pump, wherein a water treatment process is added if a medicament affects the separation process, and the backwater can be used for separation after treatment.
Another tailing discharge mode is a tailing filter pressing dry stacking technology (also called dry discharge): after tailings discharged from the grinding and floating workshop pass through a thickening tank, overflow water returns to a water return tank to be treated and recycled, underflow is conveyed to a filter pressing workshop under pressure to be subjected to filter pressing to form a tailings dry cake with the water content of 17%, the tailings dry cake is conveyed to a tailings dry yard through a conveying belt to be stacked, filter pressing water returns to the water return tank to be treated and recycled, and tailings water is not discharged outside. Meanwhile, a water collecting tank is arranged at the lower reaches of the retaining dam of the tailing dry dump to collect seepage water of the retaining dam, curtain grouting seepage prevention is carried out on the periphery of the water collecting tank, and water in the water collecting tank also returns to the water return tank. Realizing 'zero discharge' of the sewage of the tailing dry yard. The tailing discharge mode has two advantages, namely, the stability of a tailing dry yard is good, and the safety is facilitated; and secondly, zero emission is realized, the environment is not polluted, and the environment is protected.
The existing dry tailing discharging and dewatering system comprises various devices such as a coarse tailing thickener, a hydrocyclone, a dewatering screen, a fine tailing thickener, a filter press, a slurry pump, a coarse tailing belt conveyor, a fine tailing belt conveyor and the like, and has the defects of complex process flow, inconvenient maintenance, large occupied area, large investment in the construction of a concentrating mill, high treatment cost and the like.
The current state of nonferrous metals in China is mostly poor ores, the grinding fineness is low, the mineral separation process is complex, if the early design of tailing dehydration and dry discharge is complex, the investment is large, the treatment cost is high, the enterprise benefit is undoubtedly reduced, the industrial boundary grade is also reduced due to the high production cost of ton ores, and national resources are indirectly wasted. The dry discharge of the tailings is used as an auxiliary flow of the beneficiation process, and the process is simple, low in investment, low in treatment and high in water resource utilization rate in the tailing dehydration process, and has great significance for the construction of a beneficiation plant.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a dry tailing discharge system for a non-ferrous metal dressing plant, which aims to solve the problems of multiple equipment, complex process flow, high investment and difficult maintenance of the conventional dry tailing discharge device.
The technical scheme of the utility model is as follows: the utility model provides a non ferrous metal ore dressing plant tailing does drainage system, including the ore feeding case, the tailing storehouse, the filtrate pond, the dewatering screen, sediment stuff pump and pressure filter, still include desliming fill and tailing pond, the ore feeding case links to each other with the desliming fill ore feeding mouth that desliming was fought, desliming fill sand setting mouth links to each other with the dewatering screen, dewatering screen oversize funnel links to each other with the tailing storehouse through first conveyer, dewatering screen undersize funnel links to each other with the tailing pond, desliming fill overflow mouth links to each other with the tailing pond, the tailing pond links to each other with the pressure filter ore feeding mouth of pressure filter through the sediment stuff pump, the filtrating export of pressure filter links to each other with the filtrate pond, pressure filter ore discharge mouth passes through the second conveyer and links to each other with the tailing storehouse.
As a further improvement of the utility model, a stirrer is arranged in the tailing pond.
The filtrate tank is connected with a filtrate delivery pump.
The first conveyor and the second conveyor are both belt conveyors.
The utility model is a dry tailing draining and dewatering device with simple process flow, good dewatering effect, investment saving and simple maintenance, tailings in a feeding box automatically flow to a desliming hopper, the desliming hopper overflows and automatically flows to a tailing pond, settled sand automatically flows to a dewatering screen, materials on the screen are conveyed to a first conveyor and conveyed to a tailing pond, materials under the screen enter the tailing pond, materials in the tailing pond are conveyed to a filter press through a tailing pump for dewatering, the dewatered materials are conveyed to the tailing pond through a second conveyor, and pressure filtered water is conveyed to a concentrating mill for recycling after being precipitated in a filtrate pond.
Compared with the prior art, the utility model has the following advantages:
(1) according to different particle sizes, the tailings can be treated as early as possible, so that the increase of energy consumption of the tailings with coarse particle size and reduced mud content in the process is avoided;
(2) from the perspective of energy conservation, the utility model uses equipment with lower energy consumption as much as possible, reduces the tailing treatment cost and increases the income of mine enterprises;
(3) the utility model has simple flow, the dewatering equipment is the conventional equipment for mine production, the equipment investment cost is greatly reduced, the area occupied by the traditional thickener in a dressing plant workshop is saved, and the capital investment cost is saved;
(4) the utility model has good dehydration effect, and the backwater utilization rate is far higher than 85% required by the non-ferrous metal industry environmental protection engineering design specification (GB 50988-2014).
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a process flow diagram of the present invention.
In the figure: 1. a feeding box; 2. a mud removing hopper; 2-1, a desliming bucket ore feeding port; 2-2, an overflow port of the desliming hopper; 2-3, a desilting opening of the desliming hopper; 3. dewatering screen; 3-1, screening the dewatering screen by using a funnel; 3-2, a dewatering screen undersize funnel; 4. a first conveyor; 5. a tailing pond; 5-1, a stirrer; 6. a slurry pump; 7. a filter press; 7-1, feeding the ore mouth by a filter press; 7-2, and a filtrate outlet; 7-3, a pressure filter ore discharge port; 8. a second conveyor; 9. a tailings pond; 10. a filtrate tank; 11. a filtrate delivery pump.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in figure 1, the dry discharge system for the tailings of the nonferrous metal concentrating mill comprises a feeding box 1, a tailing pond 9 and a filtrate pond 10, the dewatering screen 3, the slurry pump 6 and the filter press 7 further comprise a desliming hopper 2 and a tailing pond 5, the ore feeding box 1 is connected with a desliming hopper ore feeding port 2-1 of the desliming hopper 2, a desliming hopper sand settling port 2-3 is connected with the dewatering screen 3, a dewatering screen upper screen funnel 3-1 is connected with the tailing pond 9 through a first conveyor 4, a dewatering screen lower screen funnel 3-2 is connected with the tailing pond 5, a desliming hopper overflow port 2-2 is connected with the tailing pond 5, the tailing pond 5 is connected with a filter press ore feeding port 7-1 of the filter press 7 through the slurry pump 6, a filtrate outlet 7-2 of the filter press 7 is connected with a filtrate pond 10, and a filter press ore discharge port 7-3 is connected with the tailing pond 9 through a second conveyor 8.
A stirrer 5-1 is arranged in the tailing pond 5.
The filtrate tank 10 is connected with a filtrate delivery pump 11.
The first conveyor 4 and the second conveyor 8 are both belt conveyors.
The feed box 1 is used as a buffer box for the tailings discharged by the process of the concentrating mill. The desliming hopper 2 is used as a grading device, the dewatering screen 3 is used as a coarse fraction two-stage dewatering device, and the filter press 7 is used as a last stage dewatering device.
Examples 1,
The technological process of the utility model is shown in figure 2, zinc flotation tailings in a certain zinc dressing plant are discharged to a feeding box 1, the tailings in the feeding box 1 automatically flow to a desliming hopper feeding port 2-1, desliming is carried out by the desliming hopper 2, overflow automatically flows from an overflow port 2-2 of the desliming hopper to a tailing pond 5, settled sand is supplied to a dewatering screen 3, materials on the screen are supplied to a first conveyor 4 through an upper screen funnel 3-1 of the dewatering screen to a tailing pond 9, materials under the screen are automatically flowed to the tailing pond 5 through a lower screen funnel 3-2 of the dewatering screen and a connecting pipeline, a 5-1 stirrer 5-1 is arranged in the tailing pond to prevent tailing sedimentation and is not suitable for pumping, ore pulp in the tailing pond 5 is supplied to a feeding port 7-1 of a filter press by a slag pulp pump 6, filter liquor is filtered by the filter press 7, filter liquor is automatically flowed to a filter liquor pond 10 through a filter liquor outlet 7-2, filter liquor in the filter liquor pond 10 is automatically flowed to a filtrate after sedimentation, and pumping the dry ore to a dressing plant for recycling through a filtrate conveying pump 11, and conveying the dry ore discharged from an ore discharge port 7-3 of the filter press to a tailing pond 9 through a second conveyor 8.
The coarse fraction is dehydrated by a two-stage dehydration process of a desliming bucket 2+ a dehydration screen 3, the fine fraction is dehydrated by a filter press 7, and the dehydrated tailings are directly stockpiled in a tailing pond 9, so that the stability of the tailing pond 9 is improved, and the safety is facilitated; and the zero discharge of the production wastewater is realized, the water resource waste is avoided, and the environment is not polluted, thereby being beneficial to environmental protection.
Claims (4)
1. The utility model provides a non ferrous metal concentrating mill tailing does system of arranging, includes ore feeding box, tailing storehouse, filtrate pond, dewatering screen, sediment stuff pump and pressure filter, its characterized in that: the device is characterized by further comprising a desliming hopper (2) and a tailing pond (5), wherein the feeding box (1) is connected with a desliming hopper feeding port (2-1) of the desliming hopper (2), a desliming hopper sand settling port (2-3) is connected with a dewatering screen (3), an upper screening funnel (3-1) of the dewatering screen is connected with the tailing pond (9) through a first conveyor (4), a lower screening funnel (3-2) of the dewatering screen is connected with the tailing pond (5), an overflow port (2-2) of the desliming hopper is connected with the tailing pond (5), the tailing pond (5) is connected with a filter press feeding port (7-1) of a filter press (7) through a slurry pump (6), a filtrate outlet (7-2) of the filter press (7) is connected with a filtrate pond (10), and a filter press ore discharge port (7-3) is connected with the tailing pond (9) through a second conveyor (8).
2. The non-ferrous metal concentrating mill tailing dry discharging system of claim 1, characterized in that: and a stirrer (5-1) is arranged in the tailing pond (5).
3. The non-ferrous metal concentrating mill tailing dry discharging system according to claim 1 or 2, characterized in that: the filtrate pool (10) is connected with a filtrate delivery pump (11).
4. The non-ferrous metal concentrating mill tailing dry discharging system of claim 3, characterized in that: the first conveyor (4) and the second conveyor (8) both adopt belt conveyors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122122543.9U CN215745471U (en) | 2021-09-03 | 2021-09-03 | Dry tailing discharge system for nonferrous metal concentrating mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122122543.9U CN215745471U (en) | 2021-09-03 | 2021-09-03 | Dry tailing discharge system for nonferrous metal concentrating mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215745471U true CN215745471U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122122543.9U Active CN215745471U (en) | 2021-09-03 | 2021-09-03 | Dry tailing discharge system for nonferrous metal concentrating mill |
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| Country | Link |
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| CN (1) | CN215745471U (en) |
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2021
- 2021-09-03 CN CN202122122543.9U patent/CN215745471U/en active Active
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