CN111773772A - Device and method for preventing rake pressing of thickener - Google Patents
Device and method for preventing rake pressing of thickener Download PDFInfo
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- CN111773772A CN111773772A CN202010707375.7A CN202010707375A CN111773772A CN 111773772 A CN111773772 A CN 111773772A CN 202010707375 A CN202010707375 A CN 202010707375A CN 111773772 A CN111773772 A CN 111773772A
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- thickener
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0024—Inlets or outlets provided with regulating devices, e.g. valves, flaps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0096—Safety mechanisms specially adapted for settling tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2221/00—Applications of separation devices
- B01D2221/04—Separation devices for treating liquids from earth drilling, mining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention provides a device and a method for preventing a thickener from pressing a rake, and belongs to the technical field of industrial application of tailing thickening treatment. The device comprises a valve, a concentration meter, a water pump, a dilution cylinder, an electromagnetic flowmeter and an accident treatment pool, wherein an electromagnetic valve and a concentration meter are distributed on a tail mortar incoming pipeline to control tail mortar incoming, a water pump and an electromagnetic valve are distributed on an industrial water pipeline to control the on-off of dilution water, the dilution cylinder is arranged to be mixed and diluted with the industrial water to meet the requirements of the thickener when the concentration of the tail mortar is too high, and the valves are arranged on the feeding side and the emergency discharging side of the thickener to control the flow of tail mortar entering the thickener. The invention can monitor and control the concentration and flow of the tailing slurry entering the thickener, prevent rake pressing accidents caused by excessive tailing feeding in a period of time, improve the utilization rate of the thickener and facilitate the thickening to be carried out efficiently.
Description
Technical Field
The invention relates to the technical field of industrial application of tailing thickening treatment, in particular to a device and a method for preventing a thickener from pressing a rake.
Background
A large amount of tailings are necessarily generated in the development and utilization process of mineral resources, and the thickening and dehydration are common tailings treatment methods. When the thickener works, the concentration and the flow of the tailing slurry are required to be relatively stable. If the flow of the incoming material is unstable, the processing capacity of the thickener is exceeded, so that the thickener generates muddy running and rake pressing events; if the incoming material concentration is unstable, the accident of pressing and raking of the thickener can also be caused due to the over-quick sedimentation of the tailings. In view of the above, it is necessary to control the flow rate and concentration of the incoming material of the thickener to ensure the normal operation of the thickener.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for preventing a thickener from rake pressing, which are used for preventing the thickener rake pressing accident caused by the severe fluctuation of the flow and the concentration of incoming material tail mortar.
The device comprises a valve, a concentration meter, a water pump, a dilution cylinder, an electromagnetic flowmeter and an accident treatment pool, wherein the valve A and the concentration meter are distributed on a tailing slurry incoming pipeline, the water pump and the valve B are distributed on an industrial water pipeline, the tailing slurry incoming pipeline and the downstream of the industrial water pipeline are jointly connected into the dilution cylinder, the rear part of the dilution cylinder is divided into two pipelines, one pipeline leads to the thickener, the other pipeline leads to the accident treatment pool, the electromagnetic flowmeter and the valve D are arranged on the pipeline leading to the thickener, and the pipeline leading to the accident treatment pool is provided with the valve C.
All valves are electromagnetic valves.
The thickener is provided with a rake rack torque sensing device for acquiring real-time data of the rake rack torque, and when the thickener torque does not exceed a set value, the valve A is in an openable state.
The concentration of the fed tailing slurry is obtained after the tailing slurry is detected by a concentration meter, and when the concentration is lower than a set value, the concentration is marked as normal; when the concentration is higher than the set value, the mark is abnormal, the concentration value is recorded into the PLC loop and calculated, the flow of the industrial water which is required to be pumped to reach the specified concentration is obtained, and the industrial water is input into the water pump.
The tail mortar is subjected to an electromagnetic flowmeter to obtain the flow of tail ore entering a thickener, and if the flow is lower than a set value, the tail mortar is marked as normal concentration; when the concentration is higher than the set value, the mark is abnormal flow, the flow value is counted in the PLC loop and calculated, and the aim of controlling the flow of the tailings entering the thickener is fulfilled by adjusting the opening degrees of the valve C and the valve D.
The water pump is a variable frequency water pump and is connected with a PLC for automatic adjustment.
The method for applying the device comprises the following steps:
s1: after the incoming tailing slurry passes through the valve A, the concentration meter senses the concentration of the incoming tailing slurry, when the incoming tailing slurry is normal in concentration, the valve D is opened, and tailings directly enter the thickener;
s2: the electromagnetic flowmeter acquires the real-time flow of the tailing slurry, and when the flow is normal, the valve D is kept open and the valve C is closed;
s3: if the flow is too large and exceeds a set value, the valve C and the valve D are simultaneously opened and keep proper opening degrees, so that proper tailing slurry is discharged into the thickener, and the excessive tailing slurry is discharged into the accident treatment pool;
s4: when the concentration of the supplied tailings slurry is too high and exceeds a set value, the water pump is started, the tailings slurry and the industrial water are mixed through the dilution cylinder, the mixed tailings slurry and the industrial water enter the thickener after being metered by the electromagnetic flowmeter, and the valve D is kept open when the flow is normal, and the valve C is kept closed;
s5: if the flow is too large and exceeds the set value, the valve C and the valve D are opened at the same time and keep proper opening degrees, so that proper tailing slurry is discharged into the thickener, and the excessive tailing slurry is discharged into the accident treatment pool.
The technical scheme of the invention has the following beneficial effects:
the invention realizes the control and regulation of the feeding of the thickener, thereby avoiding the abnormal working condition of the thickener caused by the instability of the incoming tailings. The electromagnetic valve, the flowmeter and the concentration meter which are distributed on the feeding pipeline are connected into the PLC loop control system, so that the automatic control of the tailing slurry when the incoming material concentration and the incoming material flow are abnormal is realized.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a flow chart of the operation of the present invention.
Wherein: 1-valve A, 2-concentration meter, 3-water pump, 4-valve B, 5-dilution cylinder, 6-valve C, 7-electromagnetic flowmeter, 8-valve D, 9-accident treatment pool.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a device and a method for preventing a thickener from pressing a rake.
As shown in fig. 1, the device comprises a valve, a concentration meter 2, a water pump 3, a dilution cylinder 5, an electromagnetic flow meter 7 and an accident treatment pool 9, wherein the valve a1 and the concentration meter 2 are arranged on a tailing slurry incoming material pipeline and are used for controlling the tailing slurry incoming material to obtain the concentration of the tailing slurry at the same time so as to provide a basis for dilution, and the water pump 3 and the valve B4 are arranged on a water supply pipeline and are used for providing a water source when the tailing slurry needs to be diluted. A dilution cylinder 5 is located downstream of the feed and water supply lines to provide space for slurry dilution. Two pipelines are arranged behind the dilution tank, one pipeline is communicated with the thickener, an electromagnetic flow meter 7 and a valve D8 are arranged on the pipeline and used for monitoring and controlling the tailing slurry discharged to the thickener, and the other pipeline is communicated with the accident tank 9, and a valve C6 is arranged on the pipeline and used for discharging in emergency. The valves are all electromagnetic valves, and the water pump 3 is a variable-frequency water pump and is connected to a PLC for automatic adjustment.
The thickener is provided with a rake rack torque sensing device for acquiring real-time data of the rake rack torque, and when the thickener torque does not exceed a specific value set according to the field condition, the valve A1 is in an openable state.
As shown in fig. 2, during operation, the tailing slurry is detected by a concentration meter 2 to obtain the concentration of the fed tailing slurry, and when the concentration is lower than a set value set according to the field condition, the concentration is marked as normal; when the concentration is higher than the set value, the mark is abnormal, the concentration value is recorded into the PLC loop and calculated, the flow of the industrial water which is required to be pumped to reach the specified concentration is obtained, and the industrial water is input into the water pump 3.
The tailing slurry is informed of the tailing flow entering the thickener after passing through the electromagnetic flowmeter 7, and if the flow is lower than a set value set according to the field condition, the tailing slurry is marked as normal concentration; when the concentration is higher than the set value, the mark is abnormal flow, the flow value is counted in the PLC loop and calculated, and the aim of controlling the flow of the tailings entering the thickener is fulfilled by adjusting the opening degrees of the valve C6 and the valve D8.
After the incoming tailing slurry passes through the valve A1, the concentration meter 2 senses the concentration of the incoming tailing slurry, when the incoming tailing slurry concentration is normal, the valve D8 is opened, and tailings directly enter the thickener; the electromagnetic flow meter 7 acquires the real-time flow of the tailing slurry, and when the flow is normal, the valve D8 is kept open, and the valve C6 is closed; if the flow is too large, the valve C6 and the valve D8 are opened simultaneously and keep proper opening degrees, so that proper tailing slurry is discharged into the thickener, and the excessive tailing slurry is discharged into the accident treatment pool 9; when the concentration of the supplied tailings slurry is too high, the water pump 3 is started, the tailings slurry and the industrial water are mixed through the dilution cylinder 5, and then enter the thickener after being measured by the electromagnetic flowmeter 7, and the valve D8 is kept opened when the flow is normal, and the valve C6 is kept closed; if the flow is too large, the valve C6 and the valve D8 are opened simultaneously and kept at proper opening degrees, so that proper tailing slurry is discharged into the thickener, and the excessive tailing slurry is discharged into the accident treatment tank 9.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a prevent that thickener from pressing device of harrow which characterized in that: the device comprises a valve, a concentration meter (2), a water pump (3), a dilution cylinder (5), an electromagnetic flowmeter (7) and an accident treatment pool (9), wherein a valve A (1) and the concentration meter (2) are distributed on a tailing slurry feeding pipeline, a water pump (3) and a valve B (4) are distributed on an industrial water pipeline, the tailing slurry feeding pipeline and the downstream of the industrial water pipeline are jointly connected into the dilution cylinder (5), the rear part of the dilution cylinder (5) is divided into two pipelines, one pipeline leads to a thickener, the other pipeline leads to the accident treatment pool (9), the pipeline leading to the thickener is provided with the electromagnetic flowmeter (7) and a valve D (8), and the pipeline leading to the accident treatment pool (9) is provided with a valve C (6).
2. The device for preventing the rake of the thickener from being pressed according to claim 1, wherein: the valves are all electromagnetic valves.
3. The device for preventing the rake of the thickener from being pressed according to claim 1, wherein: the thickener is provided with a rake rack torque sensing device for acquiring real-time data of rake rack torque, and when the thickener torque does not exceed a set value, the valve A (1) is in an openable state.
4. The device for preventing the rake of the thickener from being pressed according to claim 1, wherein: the concentration meter (2) detects the concentration of the fed tailing slurry, and when the concentration is lower than a set value, the concentration is marked as normal; when the concentration is higher than the set value, the mark is abnormal, the concentration value is recorded into the PLC loop and calculated, the flow of the industrial water which is required to be pumped to reach the specified concentration is obtained, and the industrial water is input into the water pump (3).
5. The device for preventing the rake of the thickener from being pressed according to claim 1, wherein: the electromagnetic flowmeter (7) detects the flow of tailings entering the thickener, and if the flow is lower than a set value, the concentration is marked as normal; when the concentration is higher than the set value, the mark is abnormal flow, the flow value is counted in the PLC loop and calculated, and the purpose of controlling the flow of the tailings entering the thickener is realized by adjusting the opening degrees of the valve C (6) and the valve D (8).
6. The device for preventing the rake of the thickener from being pressed according to claim 1, wherein: the water pump (3) is a variable frequency water pump and is connected with a PLC for automatic adjustment.
7. The method for preventing the rake pressing device of the thickener from being applied to the device as claimed in claim 1, is characterized in that: the method comprises the following steps:
s1: after incoming tailing slurry passes through the valve A (1), the concentration meter (2) senses the concentration of the incoming tailing slurry, when the incoming tailing slurry concentration is normal, the valve D (8) is opened, and tailings directly enter the thickener;
s2: the electromagnetic flow meter (7) acquires the real-time flow of the tailing slurry, the valve D (8) is kept open when the flow is normal, and the valve C (6) is closed;
s3: if the flow exceeds the set value, the valve C (6) and the valve D (8) are opened simultaneously to ensure that proper tailing slurry is discharged into the thickener, and the excessive part is discharged into an accident treatment pool (9);
s4: when the incoming concentration of the tailing slurry exceeds a set value, a water pump (3) is started, the tailing slurry and industrial water are mixed through a dilution cylinder (5), then the mixed tailing slurry and industrial water enter a thickener after being measured by an electromagnetic flowmeter (7), a valve D (8) is kept open when the flow is normal, and a valve C (6) is kept closed;
s5: if the flow exceeds the set value, the valve C (6) and the valve D (8) are opened simultaneously to ensure that proper tailing slurry is discharged into the thickener, and the excessive part is discharged into the accident treatment pool (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707375.7A CN111773772B (en) | 2020-07-20 | 2020-07-20 | Device and method for preventing pressing harrow of thickener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707375.7A CN111773772B (en) | 2020-07-20 | 2020-07-20 | Device and method for preventing pressing harrow of thickener |
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| Publication Number | Publication Date |
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| CN111773772A true CN111773772A (en) | 2020-10-16 |
| CN111773772B CN111773772B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010707375.7A Active CN111773772B (en) | 2020-07-20 | 2020-07-20 | Device and method for preventing pressing harrow of thickener |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370822A (en) * | 2020-11-05 | 2021-02-19 | 泰山石膏(包头)有限公司 | Waste slurry treatment device for automatic start-up and shut-down of gypsum board production |
| CN113304512A (en) * | 2021-06-25 | 2021-08-27 | 浙江嘉化新材料有限公司 | Anti-floating mud type precipitator for methyl sulfone-based toluene wastewater |
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| JP2010201324A (en) * | 2009-03-03 | 2010-09-16 | Sumitomo Metal Mining Co Ltd | Feed well for thickener |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112370822A (en) * | 2020-11-05 | 2021-02-19 | 泰山石膏(包头)有限公司 | Waste slurry treatment device for automatic start-up and shut-down of gypsum board production |
| CN112370822B (en) * | 2020-11-05 | 2022-06-14 | 泰山石膏(包头)有限公司 | Waste slurry treatment device for automatic start-up and shut-down of gypsum board production |
| CN113304512A (en) * | 2021-06-25 | 2021-08-27 | 浙江嘉化新材料有限公司 | Anti-floating mud type precipitator for methyl sulfone-based toluene wastewater |
| CN113304512B (en) * | 2021-06-25 | 2024-06-07 | 浙江嘉化新材料有限公司 | Anti-floating mud type precipitator for methylsulfonyl toluene wastewater |
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|---|---|
| CN111773772B (en) | 2023-08-15 |
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