CN215087951U - Improved collophanite flotation return water short circulating system - Google Patents
Improved collophanite flotation return water short circulating system Download PDFInfo
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- CN215087951U CN215087951U CN202120784737.2U CN202120784737U CN215087951U CN 215087951 U CN215087951 U CN 215087951U CN 202120784737 U CN202120784737 U CN 202120784737U CN 215087951 U CN215087951 U CN 215087951U
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Abstract
The utility model discloses a short circulation system of improved generation collophanite flotation return water relates to collophanite flotation technical field. The system comprises a high-level water tank, a grinding machine, a reverse flotation device, a scavenging device, a first thickener and a water return tank which are sequentially connected in a self-flowing manner, wherein the scavenging device is connected with a cyclone through a slurry pump, the overflow port of the cyclone is connected with the feeding port of the grinding machine through a self-flowing pipe, the underflow port of the cyclone is connected with a reprocessing process, and the underflow port of the first thickener is connected with a tailing storage tank; the concentrate outlet of the reverse flotation device is sequentially connected with a second thickener and a water return pool in a self-flowing manner, the water return pool is connected with a high-level water pool through a high-pressure pump, and the underflow opening of the second thickener is connected with a concentrate storage tank. The overflow of the cyclone is introduced into the mill through the gravity flow pipe to serve as water supplement, phosphate ore in the overflow enters the ore grinding flotation process again, the phosphorus loss is reduced, the phosphorus recovery is improved, the tailing discharge amount is reduced, the recycling of the overflow of the cyclone is realized through gravity flow, the circulating process of return water is greatly shortened, and electric energy is effectively saved.
Description
Technical Field
The utility model relates to a collophanite flotation technical field, concretely relates to short circulation system of improved generation collophanite flotation return water.
Background
Collophanite powderThe phosphorus is enriched through single reverse flotation to obtain phosphorus concentrate for subsequent production and processing, water is used in each process flow in the flotation process, a high-level water tank is arranged at a higher position when a plant is built for saving energy and reducing energy consumption, and clear water in the high-level water tank flows to each water using point automatically. The specific flow is shown in figure 1, the water in the high-level water tank automatically flows to a grinding machine, the phosphorite is ground by the grinding machine and then enters reverse flotation, the underflow concentrate enters a thickener and is concentrated, the phosphate concentrate of the underflow enters a concentrate storage tank, and the overflow water enters a water return tank. The reverse flotation foam automatically flows into a scavenging tank, the scavenged foam tailings enter a thickener, the concentrated underflow tailings enter a tailing pond, and the overflow water enters a water return pond. The water in the water return tank is basically clear water and is pumped into the high-level water tank through the high-pressure pump for recycling. And (3) pumping the concentrate in the scavenging groove into a cyclone for grading, enabling the bottom flow to enter the next treatment link, and enabling the overflow water to automatically flow into a thickener to be concentrated together with scavenging tailings. The cyclone requires that the two-phase mixed liquid to be separated enters at a certain pressure, and the aim of pressurization is achieved by a pump in the production process. Overflow flow of a cyclone in a flotation system of 280 ten thousand tons of concentrate per year in a certain Yunnan factory is 400m3And h, the solid content is about 3%, and the part of overflow water automatically flows to a thickener, enters a water return pool and is pumped into a high-level water pool through a high-pressure pump for recycling.
The above-described flow has the following problems: 1. the overflow of the cyclone contains partial phosphate concentrate, and the phosphate loss can be caused when the phosphate concentrate directly enters the thickener; 2. the overflow flow is large, the pumping energy consumption is large, the water enters the return water pool and is pumped into the high-level water pool through the high-pressure pump, the return water pool is generally positioned at the lowest position in the flotation plant, the height difference between the return water pool and the high-level water pool is about 100 meters, and the power consumption for conveying the return water is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a short circulation system of improved generation collophanite flotation return water solves the problem that current circulation system energy consumption is big, there is the phosphorus loss.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a short circulation system of improved generation collophanite flotation return water which characterized in that: the system comprises a high-level water tank, an ore grinding device, a reverse flotation device, a scavenging device, a first thickener and a water return tank which are sequentially connected in a self-flowing manner, wherein the scavenging device is connected with a cyclone through an ore pulp pump, an overflow port of a grading cyclone is connected with a feed inlet of the ore grinding device through a self-flowing pipe, a underflow port of the grading cyclone is connected with a reprocessing process, and a underflow port of the first thickener is connected with a tailing storage tank; the concentrate outlet of the reverse flotation device is sequentially connected with a second thickener and a water return pool in a self-flowing manner, the water return pool is connected with a high-level water pool through a high-pressure pump, and the underflow opening of the second thickener is connected with a concentrate storage tank.
The further technical scheme is that the height difference between the overflow port of the grading cyclone and the feeding port of the ore grinding device is 10-20 m.
A further technical scheme is that one end of the gravity flow pipe is provided with a valve, and the other end of the gravity flow pipe is provided with a flowmeter.
A further technical scheme is that a buffer tube is arranged in the middle of the gravity flow tube, and the diameter of the buffer tube is 2-5 times of that of the gravity flow tube.
A further technical scheme is that liquid level sensors are arranged in the high-level water tank and the return water tank.
The ore grinding device comprises a first section grinding machine, a first section pump pool, a first sand pump, a first section swirler, a second section pump pool, a second sand pump, a second section swirler and a second section grinding machine which are connected in sequence, wherein a underflow port of the first section swirler is connected with a feed inlet of the first section grinding machine, an overflow port of the first section swirler is connected with the second section pump pool, an underflow port of the second section swirler is connected with a feed inlet of the second section grinding machine, a discharge outlet of the second section grinding machine is connected with the second section pump pool, an overflow port of the second section swirler is connected with a feed inlet of a reverse flotation device, and an overflow port of a grading swirler is connected with the feed inlet of the second section pump pool through a gravity flow pipe.
The working principle is as follows: the collophanite after the primary crushing is sent into an ore grinding device, overflow water is used as ore grinding water and water replenishing through a high-level water tank and a grading cyclone, the ore grinding is qualified and then enters a reverse flotation device for reverse flotation, reverse flotation concentrate is concentrated through a second thickener, obtained phosphate concentrate is sent to a concentrate storage tank for storage, foam is used as tailings and enters a scavenging device for scavenging, the scavenged foam tailings are sent to a first thickener for concentration, the obtained tailings are sent to a tailing storage tank or a tailing tank for storage, an in-tank concentrate pump is sent to the cyclone for grading, underflow concentrate enters the next treatment link, and overflow is used as water replenishing of the ore grinding device through a gravity flow pipe. And the overflow of the first thickener and the second thickener automatically flows into the water returning pool and then is sent into the high-level pool through the high-pressure pump for recycling.
Compared with the prior art, the beneficial effects of the utility model are that: the improved collophanite flotation backwater short circulating system is simple in structure and convenient to operate, overflow of the grading cyclone is introduced into the ore grinding device through the gravity flow pipe to serve as water supplement, and phosphorite in the overflow enters the ore grinding flotation process again, so that phosphorus loss is greatly reduced, phosphorus recovery is improved, tailing discharge is reduced, and the environment is protected; meanwhile, the step that the overflow of the cyclone flows to the first thickener automatically and then enters the water return tank and then is pumped into the high-level water tank through the high-pressure pump is omitted, the recycling of the overflow of the cyclone can be realized through the automatic flow, the circulating process of the return water is greatly shortened, the electric energy is effectively saved, the resource utilization efficiency is improved, and the mineral dressing level and the economic benefit of a flotation plant are improved.
Drawings
Fig. 1 is a prior art flotation scheme.
Fig. 2 is a schematic block diagram of the structure of the present invention.
Fig. 3 is a schematic structural view of the middle gravity flow pipe of the present invention.
Fig. 4 is a flow chart of the present invention.
Fig. 5 is a structural schematic block diagram of the middle ore grinding device of the present invention.
In the figure: 1-a high-level water tank, 2-an ore grinding device, 3-a reverse flotation device, 4-a scavenging device, 5-a first thickener, 6-a water return tank, 7-an ore pulp pump, 8-a classification cyclone, 9-a gravity flow pipe, 10-a second thickener, 11-a high-pressure pump, 12-a valve, 13-a flow meter, 14-a buffer pipe, 201-a first-section mill, 202-a first-section pump pool, 203-a first sand pump, 204-a first-section cyclone, 205-a second-section pump pool, 206-a second sand pump, 207-a second-section cyclone and 208-a second-section mill.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
FIG. 2 shows an improved collophanite flotation return water short circulation system, which comprises a high-level water tank 1, an ore grinding device 2, a reverse flotation device 3, a scavenging device 4, a first thickener 5 and a return water tank 6 which are sequentially connected in a self-flowing manner, wherein the scavenging device 4 is connected with a classification swirler 8 through an ore pulp pump 7, an overflow port of the classification swirler 8 is connected with a feed inlet of the ore grinding device 2 through a self-flowing pipe 9, a bottom flow port of the classification swirler 8 is connected with a retreatment process, and a bottom flow port of the first thickener 5 is connected with a tailing storage tank; the concentrate outlet of the reverse flotation device 3 is sequentially connected with a second thickener 10 and a water return pool 6 in a self-flowing manner, the water return pool 6 is connected with the high-level water tank 1 through a high-pressure pump 11, and the bottom flow port of the second thickener 10 is connected with a concentrate storage tank. When a plant is built, the height difference between the positions of the high-level water tank 1 and the position of the water return tank 6 is about 100 meters, and in order to ensure the gravity flow power of water, the height difference between the high-level water tank 1 and the height difference between the high-level water tank 2 and the height difference between the high-level water tank 1 and the height difference between the high-level water tank 2 are about 60 meters, so that the water in the high-level water tank 1 can flow to each water replenishing point. In order to enable overflow with certain pressure in the classifying cyclone 8 to automatically flow into the ore grinding device, the height difference between the overflow port of the classifying cyclone 8 and the feeding port of the ore grinding device 2 is 10-20 m. The height difference between the classifying cyclone 8 and the ore grinding device 2 can be realized by mounting the classifying cyclone 8, the height of the classifying cyclone 8 is about 12 m, and the height of a mounting rack at the bottom of the classifying cyclone can be manufactured and mounted according to actual requirements during mounting.
As shown in fig. 4, when in use, collophanite after primary crushing is fed into an ore grinding device 2, overflow water passing through a high-level water tank 1 and a grading cyclone 8 is used as ore grinding water adding and supplementing water, after the ore grinding is qualified, the collophanite enters a reverse flotation device 3 for reverse flotation, reverse flotation concentrate is concentrated through a second thickener 10, obtained phosphate concentrate is conveyed into a concentrate storage tank for storage, foam is used as tailings and enters a scavenging device 4 for scavenging, the scavenged foam tailings are conveyed into a first thickener 5 for concentration, the obtained tailings are conveyed into a tailing storage tank or a tailing tank for storage, an in-tank concentrate pump is conveyed into the grading cyclone 8 for grading, underflow concentrate enters the next link for treatment, and overflow is used as ore grinding device water supplementing through a gravity flow pipe 9. The overflow of the first thickener 5 and the second thickener 10 automatically flows into the water return pool 6 and then is sent into the high-level water pool 6 through the high-pressure pump for recycling.
In order to facilitate the control of the amount of return water entering the ore grinding device 2, as shown in fig. 3, one end of the gravity flow pipe 9 is provided with a valve 12, the other end is provided with a flow meter 13, the total amount of return water entering the ore grinding device 2 is controlled through the valve 12 and the flow meter 13, and the stability of the total amount of water supplement is ensured. For further stabilizing moisturizing pressure and control flow, be provided with buffer tube 14 in the middle part of flowing 9, buffer tube 14 pipe diameter is 2 ~ 5 times of flowing 9 certainly, and excessive overflow water can be temporarily stored in buffer tube 14.
All be provided with level sensor in high-order pond 1 and the return water pond 6, when 1 internal water of high-order pond was not enough, can supply through return water pond 6 and outside clear water, when 6 internal water levels of return water pond were too high, can go into 1 internal storages of high-order pond with it pump.
In order to further improve the ore grinding efficiency and the ore grinding effect, as shown in fig. 5, the ore grinding device 2 is composed of a first-stage grinding machine 201, a first-stage pump pool 202, a first sand pump 203, a first-stage cyclone 204, a second-stage pump pool 205, a second sand pump 206, a second-stage cyclone 207 and a second-stage grinding machine 208 which are connected in sequence, wherein a bottom flow port of the first-stage cyclone 204 is connected with a feed inlet of the first-stage grinding machine 201, an overflow port of the first-stage cyclone 204 is connected with the second-stage pump pool 205, a bottom flow port of the second-stage cyclone 207 is connected with a feed inlet of the second-stage grinding machine 208, a discharge port of the second-stage grinding machine 208 is connected with the second-stage pump pool 205, an overflow port of the second-stage cyclone 207 is connected with a feed inlet of the reverse flotation device 3, and an overflow port of the classification cyclone 8 is connected with a feed inlet of the second-stage pump pool 205.
During the use process, the ore after the primary crushing is simultaneously supplemented with about 60m in an amount of about 220t/h3The water enters a first-stage grinding machine 201 for grinding, and the ground ore pulp enters a first-stage pump pool and is supplemented with 180-grade iron 200m3Water/h is pumped into the first-stage cyclone 204 for classification through the first sand pump 203 after being uniformly stirred, the classified underflow sand is returned to the first-stage grinding machine 201 for circular grinding, the overflow enters the second-stage pump pool 205 and is supplemented with 270-300m sand3H water, thenAnd pumping the secondary sand into a secondary cyclone 207 through a second sand pump 206 for classification, enabling the classified settled sand to enter a secondary grinding mill 208 for grinding, then entering a secondary pump pool 205, enabling the classified settled sand to overflow into a stirring barrel of the reverse flotation device 3, adding 16-22kg/t of regulator and 1-3kg/t of inhibitor into the primary stirring barrel, stirring, then entering a secondary stirring barrel, adding 2-5kg/t of collector into the secondary stirring barrel, uniformly stirring, and then entering the flotation operation. The overflow water of the classification cyclone 8 enters the secondary pump pool 205 through the gravity flow pipe 9 to meet the requirements of water adding and water replenishing, and meanwhile, the phosphate concentrate particles in the overflow water directly enter the secondary cyclone 207 and directly enter flotation after classification without entering a mill for regrinding. The introduction of overflow water has no influence on the prior flotation process, a plurality of production lines are generally arranged in parallel for flotation, and the overflow water is used by the plurality of production lines.
In the flotation system of 280 ten thousand tons of concentrate per year, the overflow flow of the cyclone is about 400m3The motor power of the high-pressure pump is 900kw, and the rated flow is 1120m3The efficiency is 85%, the gravity flow mode in the application can be recycled, the electric quantity can be saved by 400/1120/0.85 × 900/378 kw.h per hour, the electric quantity can be saved by 326.72 ten thousand kw.h per year, and 5.73 million tons of phosphate concentrate in the overflow of the classification cyclone 8 can be additionally recovered.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a short circulation system of improved generation collophanite flotation return water which characterized in that: the device comprises a high-level water tank (1), an ore grinding device (2), a reverse flotation device (3), a scavenging device (4), a first thickener (5) and a water return tank (6) which are sequentially connected in a flowing manner, wherein the scavenging device (4) is connected with a grading swirler (8) through an ore pulp pump (7), an overflow port of the grading swirler (8) is connected with a feed inlet of the ore grinding device (2) through a flowing tube (9), a bottom flow port of the grading swirler (8) is connected with a reprocessing process, and a bottom flow port of the first thickener (5) is connected with a tailing storage tank; the concentrate outlet of the reverse flotation device (3) is sequentially connected with a second thickener (10) and a water return pool (6) in a self-flowing manner, the water return pool (6) is connected with the high-level water pool (1) through a high-pressure pump (11), and the underflow port of the second thickener (10) is connected with a concentrate storage tank.
2. The improved collophanite flotation return water short circulation system of claim 1 is characterized in that: the height difference between the overflow port of the classifying cyclone (8) and the feeding port of the ore grinding device (2) is 10-20 m.
3. The improved collophanite flotation return water short circulation system of claim 1 is characterized in that: one end of the gravity flow pipe (9) is provided with a valve (12), and the other end is provided with a flowmeter (13).
4. The improved collophanite flotation return water short circulation system of claim 3 is characterized in that: a buffer tube (14) is arranged in the middle of the gravity flow pipe (9), and the pipe diameter of the buffer tube (14) is 2-5 times that of the gravity flow pipe (9).
5. The improved collophanite flotation return water short circulation system of claim 1 is characterized in that: and liquid level sensors are arranged in the high-level water tank (1) and the water return tank (6).
6. The improved collophanite flotation return water short circulation system of claim 1 is characterized in that: the ore grinding device (2) is composed of a first-stage grinding machine (201), a first-stage pump pool (202), a first sand pump (203), a first-stage cyclone (204), a second-stage pump pool (205), a second sand pump (206), a second-stage cyclone (207) and a second-stage grinding machine (208) which are sequentially connected, wherein a underflow port of the first-stage cyclone (204) is connected with a feed inlet of the first-stage grinding machine (201), an overflow port of the first-stage cyclone (204) is connected with the second-stage pump pool (205), a underflow port of the second-stage cyclone (207) is connected with a feed inlet of the second-stage grinding machine (208), a discharge port of the second-stage grinding machine (208) is connected with the second-stage pump pool (205), and an overflow port of the second-stage cyclone (207) is connected with a feed inlet of the reverse flotation device (3); the overflow port of the grading cyclone (8) is connected with the feed inlet of the two-stage pump pool (205) through a gravity flow pipe (9).
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| CN202120784737.2U CN215087951U (en) | 2021-04-16 | 2021-04-16 | Improved collophanite flotation return water short circulating system |
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