CN110270438A - A kind of adjusting method of coal flotation device mineral pulp level and depth of foam - Google Patents
A kind of adjusting method of coal flotation device mineral pulp level and depth of foam Download PDFInfo
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- CN110270438A CN110270438A CN201910672702.7A CN201910672702A CN110270438A CN 110270438 A CN110270438 A CN 110270438A CN 201910672702 A CN201910672702 A CN 201910672702A CN 110270438 A CN110270438 A CN 110270438A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
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Abstract
The invention discloses a kind of coal adjusting methods of flotation device mineral pulp level and depth of foam, the method utilizes the liquid level sensor and depth of foam sensor real-time detection mineral pulp level height and depth of foam being mounted in flotation device groove body, and it will test result and be conveyed to controller, controller exports the control signal of flashboard height adjustment device according to the testing result of mineral pulp level height, tailings flashboard is risen or fallen, flotation device groove body liquid level is adjusted to setting value；The control signal that dosing adjustable valve is exported according to the testing result of depth of foam, increases or decreases dosage, to realize the adjusting to depth of foam.The present invention carries out real-time control to mineral pulp level in flotation device and depth of foam using mineral pulp level and the depth of foam detection being arranged in flotation device and regulating system, not only eliminate the influence of human factor, reduce the labor intensity of operative employee, and mineral pulp level and depth of foam can be accurately and timely adjusted, guarantee the flotation effect of concentrate.
Description
Technical field
The present invention relates to the intelligent measurement and adjusting method of mineral pulp level and depth of foam in a kind of coal flotation device groove body,
Belong to separation technology field.
Background technique
Flotation is, according to the difference of mineral surfaces property, to realize valuable mineral and useless mineral point under the action of medicament
From method.Flotation concentrate is attached to the froth bed on ore pulp surface layer in flotation device, is realized by overflow or concentrate froth paddle
The separation of froth bed and ore pulp, therefore the control of flotation pulp liquid level and depth of foam is very crucial, mineral pulp level is too low, foam
Overflow weir is not achieved in layer, cannot achieve overflow or collects concentrate foam by scraper plate, production process cannot get concentrate product；Mine
Slurries position is excessively high, then can not form the froth bed of effective thickness, also just cannot get up-to-standard concentrate product.When ore flotation slurries
In reasonable interval, the thickness of froth bed is the key factor for influencing concentrate product quality grade, by floating agent granularity, mine for position
The many factors such as object granularmetric composition, flotation device aeration quantity and bubble diameter influence, and are to need to be adjusted according to Mineral Floating Process
Whole and determining.
Currently, the liquid level of agitation impeller flotator groove body ore pulp be mainly by control tailings flashboard height come
It is adjusted, depth of foam is adjusted by controlling the additive amount of floating agent, and floating operation work is according only to froth bed
Observation, promote motor and manual dosing by manually controlling flashboard and adjust flashboard height and depth of foam.This manual control
Mode processed is very big to the dependence of people, and operative employee can only operate according to personal experience, cannot achieve real-time adjusting, Er Qiecao
Workmanship also can not observe mineral pulp level through froth bed, and the mineral pulp level and depth of foam rule of thumb estimated often exists
There is very big blindness to the control of tailings flashboard height and dosage, can not accurately and timely be adjusted in large error
It is whole, it greatly affected the flotation effect of concentrate.
Summary of the invention
It is thick it is an object of the invention to aiming at the disadvantages of the prior art, provide a kind of coal flotation device mineral pulp level and foam
The adjusting method of degree accurately and timely adjusts mineral pulp level and depth of foam to eliminate the influence of human factor, guarantees concentrate
Flotation effect.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of adjusting method of coal flotation device mineral pulp level and depth of foam, the method utilize and are mounted on flotation trough
Liquid level sensor and depth of foam sensor real-time detection mineral pulp level height and depth of foam in body, and it is defeated to will test result
Controller is given, controller exports the control signal of flashboard height adjustment device according to the testing result of mineral pulp level height, makes
Flashboard height adjustment device driving tailings flashboard rises or falls, and flotation device groove body liquid level is adjusted to setting value；According to foam
The control signal of the testing result output dosing adjustable valve of thickness, increases or decreases the dosage of chemical feed pipe, to realize
Adjusting to depth of foam.
The above-mentioned coal adjusting method of flotation device mineral pulp level and depth of foam, the described method comprises the following steps:
A. according to pan feeding ore pulp property, flotation device groove body mineral pulp level height set H is determinedspAnd set dead zone section ±
X determines depth of foam lower limit value H according to the concrete condition of productionlWith depth of foam upper limit value Hh；
B. controller receives the mineral pulp level height detection value of liquid level sensor output, obtains mineral pulp level height current value
Hcv；
C. controller calculates mineral pulp level height set HspWith mineral pulp level height current value HcvDifference DELTA H=Hsp-
HcvIf Δ H >+X, controller exports the control signal of flashboard height adjustment device, and flashboard height adjustment device is made to drive tail
Mine flashboard rises a step-length, improves mineral pulp level；If-X≤Δ H≤+ X, controller do not export flashboard height adjustment device
Signal is controlled, flashboard height remains unchanged；If Δ H is less than-X, controller exports the control signal of flashboard height adjustment device,
So that flashboard height adjustment device driving tailings flashboard is declined a step-length, declines mineral pulp level, to make mineral pulp level height
It is maintained near setting value；
D. controller receives the depth of foam detected value of depth of foam sensor output, if the detected value is less than depth of foam
Lower limit value Hl, then the control signal of the dosing adjustable valve on controller output chemical feed pipe, increases the aperture of dosing adjustable valve
Big certain value increases depth of foam；If the detected value is more than or equal to depth of foam lower limit value HlAnd it is less than depth of foam upper limit value
Hh, controller do not export the control signal of dosing adjustable valve, and dosage remains unchanged；If the detected value is greater than on depth of foam
Limit value Hh, then the control signal of controller output dosing adjustable valve, makes the aperture of dosing adjustable valve reduce certain value, reduces
Depth of foam, thus by depth of foam control within setting range.
The adjusting method of above-mentioned coal flotation device mineral pulp level and depth of foam, the depth of foam sensor are electric pole type
Liquid-level switch, the electric pole type liquid-level switch are mounted on above flotation device groove body and set there are three the electrode extended downwardly, distinguish
Lower end for public electrode, low position electrode and high level electrode, the public electrode is lower than mineral pulp level height set Hsp, described
The lower end height of low position electrode is Hsp+Hl, the lower end height of the high level electrode is Hsp+Hh, the output of electric pole type liquid-level switch
End is connect with controller.
The adjusting method of above-mentioned coal flotation device mineral pulp level and depth of foam, the flashboard height adjustment device include electricity
The control terminal of machine, retarder and gear and rack teeth mechanism, the motor is connect with controller, the input shaft and motor of the retarder
Output axis connection, output shaft connect by gear and rack teeth mechanism with tailings flashboard.
The adjusting method of above-mentioned coal flotation device mineral pulp level and depth of foam, the liquid level sensor are pressure type liquid level
Meter, floating ball lever meter, electronic ruler liquidometer, ultrasonic level gage, laser ranging liquidometer, radar level gauge or magnetostriction liquid
Position meter.
The adjusting method of above-mentioned coal flotation device mineral pulp level and depth of foam, the controller are to be mounted in control cabinet
Programmable controller.
The present invention is using mineral pulp level and the depth of foam detection being arranged in flotation device and regulating system in flotation device
Mineral pulp level and depth of foam carry out real-time control, not only eliminate the influence of human factor, the labour for reducing operative employee is strong
Degree, and mineral pulp level and depth of foam can be accurately and timely adjusted, guarantee the flotation effect of concentrate.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of mineral pulp level of the present invention and depth of foam detection and regulating system；
Fig. 2 is the structural schematic diagram of depth of foam sensor.
Each label in figure are as follows: 1, depth of foam sensor, 1-1, public electrode, 1-2, low position electrode, 1-3, high level electrode,
2, chemical feed pipe, 3, dosing adjustable valve, 4, liquid level sensor, 5, tailings flashboard, 6, flashboard height adjustment device, 7, flotation trough
Body, 8, controller, 9, flotation froth, 10, ore pulp.
Specific embodiment
Currently, liquid level sensor is not only various in style, but also detection accuracy also greatly improves, and provides for mineral pulp level detection
Very big convenience.Depth of foam can be detected according to the electric conductivity of froth bed, and detection device washability is relatively broad, simultaneously
Actuation technologies are also grown rapidly.The present invention is by controller 8, actuator (dosing adjustable valve 3 and flashboard height adjustment
Device 6), liquid level sensor 4, electric pole type depth of foam sensor 1 combine, intelligence is carried out to mineral pulp level and depth of foam
It can detect and adjust, achieve satisfactory effect.
Liquid level sensor 4 is pressure-type liquidometer, floating ball lever meter, electronic ruler liquidometer, ultrasonic level gage, Laser Measuring
Away from liquidometer, radar level gauge or magnetostriction liquidometer, can be chosen according to the actual situation.Depth of foam sensor 1 can
To select high resistant, low-resistance, low-resistance model according to flotation froth electric conductivity difference.Flashboard height adjustment device 6 is by motor, subtracts
The Electric Actuator that fast device and gear and rack teeth mechanism are constituted, can also be using electric hydraulic executer or pneumatic actuator, can basis
Actual conditions are chosen.
The present invention the following steps are included:
(1) according to pan feeding ore pulp property, flotation device groove body mineral pulp level height set H is determinedspAnd set dead zone section
± X determines depth of foam lower limit value H according to the concrete condition of productionlWith depth of foam upper limit value Hh, and it is written into control
Device 8 processed；
(2) liquid level sensor 4 is mounted in flotation cell, depth of foam sensor 1 (electric pole type liquid-level switch) is installed
Above flotation device groove body, public electrode 1-1 extend into the reliable ground that ore pulp layer realizes electrode, by depth of foam sensor
The height adjustment of 1 lower end low position electrode 1-2 is Hsp+Hl, the height adjustment of the lower end high level electrode 1-3 is Hsp+Hh, liquid level is passed
The mineral pulp level altitude signal (digital quantity or analog quantity) that sensor 4 detects is transferred to controller 8 by signal cable and (may be programmed
Sequence controller), the current value H as mineral pulp level heightcv。
(3) adjusting of mineral pulp level height:
Controller calculates mineral pulp level height set HspWith mineral pulp level height current value HcvDifference DELTA H=Hsp-
HcvIf Δ H >+X, controller exports the control signal of flashboard height adjustment device, and flashboard height adjustment device is made to drive tail
Mine flashboard rises a step-length, reduces ore pulp and flows into tailing stream amount to improve mineral pulp level, until Δ H falls on the dead zone area of setting
Between in ± X；If-X≤Δ H≤+ X, controller does not export the control signal of flashboard height adjustment device, and flashboard height maintains not
Become；If Δ H is less than-X, controller exports the control signal of flashboard height adjustment device, drives flashboard height adjustment device
Tailings flashboard declines a step-length, increases ore pulp and flows into tailing stream amount to reduce mineral pulp level, until Δ H falls on the dead zone of setting
In ± the X of section, so that mineral pulp level height be made to be maintained near setting value；
(4) adjusting of froth bed thickness:
Mineral pulp level is adjusted to setting value HspAfterwards, if froth bed is not up to the position of the lower end low position electrode 1-2, foam is thick
It spends sensor 1 to export without corresponding signal, illustrates that froth bed thickness is less than Hsp+Hl-Hsp=Hl, that is, it is less than depth of foam lower limit
Value, is unfavorable for concentrate scraper plate and scrapes, and the control signal of the dosing adjustable valve on the chemical feed pipe of controller output at this time makes dosage
The aperture of regulating valve increases certain value, increases depth of foam；If froth bed reaches the position of the lower end low position electrode 1-2, and not
Attain to a high place the position of the lower end electrode 1-3, illustrates that froth bed thickness is more than or equal to depth of foam lower limit value HlAnd it is thick to be less than foam
Spend upper limit value Hh, keep current 3 aperture of dosing adjustable valve to guarantee normally to produce at this time；The electrode if froth bed attains to a high place
The position of the lower end 1-3 illustrates that froth bed thickness is more than or equal to Hsp+Hh-Hsp=Hh, that is, it is more than or equal to depth of foam upper limit value, rises
Infusion dosage is excessive, and foam is unstable, cannot carry concentrate product well, controller reduces dosing adjustable valve automatically at this time
Aperture reduces froth bed thickness, will control depth of foam within setting range.
The present invention adjusts flotation device groove body mineral pulp level and foam thickness using electromechanical integration equipment come real-time, intelligence
Degree can be protected by mineral pulp level, flotation froth layer thickness control in groove body in the reasonable interval of a flotation manufacturing technique requirent
Card cleaned coal can be separated by high efficiency, improve concentrate yield and product qualification rate.
This method is detection and adjusting method of the completely new coal of one kind with flotation device groove body mineral pulp level and froth bed thickness,
It has great popularization value.
Claims (6)
1. a kind of coal adjusting method of flotation device mineral pulp level and depth of foam, characterized in that the method is utilized and is mounted on
Liquid level sensor (4) and depth of foam sensor (1) real-time detection mineral pulp level height and depth of foam in flotation device groove body,
And will test result and be conveyed to controller (8), controller (8) exports flashboard height tune according to the testing result of mineral pulp level height
The control signal of regulating device (6) rises or falls flashboard height adjustment device (6) driving tailings flashboard (5), by flotation trough
Body fluid position is adjusted to setting value；The control signal that dosing adjustable valve (3) are exported according to the testing result of depth of foam, makes dosing
The dosage of pipe (2) increases or decreases, to realize the adjusting to depth of foam.
2. the adjusting method of a kind of coal flotation device mineral pulp level and depth of foam according to claim 1, characterized in that
It the described method comprises the following steps:
A. according to pan feeding ore pulp property, flotation device groove body mineral pulp level height set H is determinedspAnd set dead zone section ± X, root
Depth of foam lower limit value H is determined according to the concrete condition of productionlWith depth of foam upper limit value Hh；
B. controller (8) receives the mineral pulp level height detection value of liquid level sensor (4) output, and it is current to obtain mineral pulp level height
Value Hcv；
C. controller (8) calculates mineral pulp level height set HspWith mineral pulp level height current value HcvDifference DELTA H=Hsp-
HcvIf Δ H >+X, controller (8) exports the control signal of flashboard height adjustment device (6), makes flashboard height adjustment device
(6) driving tailings flashboard (5) rises a step-length, improves mineral pulp level；If-X≤Δ H≤+ X, controller (8) does not export flashboard
The control signal of height adjustment device (6), flashboard height remain unchanged；If Δ H is less than-X, it is high that controller (8) exports flashboard
The control signal for spending regulating device (6) makes flashboard height adjustment device (6) driving tailings flashboard (5) decline a step-length, makes mine
Slurries position decline, so that mineral pulp level height be made to be maintained near setting value；
D. controller (8) receives the depth of foam detected value of depth of foam sensor (1) output, if the detected value is less than foam thickness
Spend lower limit value Hl, then the control signal of the dosing adjustable valve (3) in controller (8) output chemical feed pipe (2), adjusts dosage
The aperture of valve (3) increases certain value, increases depth of foam；If the detected value is more than or equal to depth of foam lower limit value HlAnd it is less than bubble
Foam upper thickness limit value Hh, controller (8) do not export the control signal of dosing adjustable valve (3), and dosage remains unchanged；If the inspection
Measured value is greater than depth of foam upper limit value Hh, then the control signal of controller (8) output dosing adjustable valve (3), makes dosage tune
The aperture for saving valve (3) reduces certain value, reduces depth of foam, thus by depth of foam control within setting range.
3. a kind of adjusting method of the coal according to claim 1 or 2 with flotation device mineral pulp level and depth of foam, feature
It is that the depth of foam sensor (1) is electric pole type liquid-level switch, the electric pole type liquid-level switch is mounted on flotation device groove body
The electrode that there are three Fang Bingshe extends downwardly, respectively public electrode (1-1), low position electrode (1-2) and high level electrode (1-3),
The lower end of the public electrode (1-1) is lower than mineral pulp level height set Hsp, the lower end height of the low position electrode (1-2) is
Hsp+Hl, the lower end height of the high level electrode (1-3) is Hsp+Hh, the output end of electric pole type liquid-level switch and controller (8) are even
It connects.
4. the adjusting method of a kind of coal flotation device mineral pulp level and depth of foam according to claim 3, characterized in that
The flashboard height adjustment device (6) includes motor, retarder and gear and rack teeth mechanism, the control terminal and controller of the motor
(8) it connects, the input shaft of the retarder and the output axis connection of motor, output shaft pass through gear and rack teeth mechanism and tailings flashboard
(5) it connects.
5. the adjusting method of a kind of coal flotation device mineral pulp level and depth of foam according to claim 4, characterized in that
The liquid level sensor (4) is pressure-type liquidometer, floating ball lever meter, electronic ruler liquidometer, ultrasonic level gage, laser ranging
Liquidometer, radar level gauge or magnetostriction liquidometer.
6. the adjusting method of a kind of coal flotation device mineral pulp level and depth of foam according to claim 5, characterized in that
The controller (8) is the programmable controller being mounted in control cabinet.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110899005A (en) * | 2019-12-24 | 2020-03-24 | 江西理工大学 | Intelligent monitoring device and monitoring method for flotation tank pulp and foam full tank |
| CN110961257A (en) * | 2019-11-27 | 2020-04-07 | 天地（唐山）矿业科技有限公司 | Device and method for metering, adjusting and adding chemicals of coal flotation machine |
| CN110976101A (en) * | 2019-11-18 | 2020-04-10 | 天地（唐山）矿业科技有限公司 | Foam layer characteristic-based method for on-line assessment and regulation of coal flotation process |
| CN111167615A (en) * | 2020-02-25 | 2020-05-19 | 淮北矿业股份有限公司 | System for adding chemicals to coal slime in flotation mode and chemical adding method thereof |
| CN112827663A (en) * | 2020-12-31 | 2021-05-25 | 新巴尔虎右旗荣达矿业有限责任公司 | Flotation cell liquid level regulating device |
| CN115400883A (en) * | 2022-08-17 | 2022-11-29 | 中南大学 | Test flotation column combination system and method capable of automatically adjusting height difference |
| CN117780334A (en) * | 2024-02-27 | 2024-03-29 | 西南石油大学 | Drilling fluid level measuring device and measuring method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976101A (en) * | 2019-11-18 | 2020-04-10 | 天地（唐山）矿业科技有限公司 | Foam layer characteristic-based method for on-line assessment and regulation of coal flotation process |
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| CN110961257A (en) * | 2019-11-27 | 2020-04-07 | 天地（唐山）矿业科技有限公司 | Device and method for metering, adjusting and adding chemicals of coal flotation machine |
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| CN111167615A (en) * | 2020-02-25 | 2020-05-19 | 淮北矿业股份有限公司 | System for adding chemicals to coal slime in flotation mode and chemical adding method thereof |
| CN112827663A (en) * | 2020-12-31 | 2021-05-25 | 新巴尔虎右旗荣达矿业有限责任公司 | Flotation cell liquid level regulating device |
| CN115400883A (en) * | 2022-08-17 | 2022-11-29 | 中南大学 | Test flotation column combination system and method capable of automatically adjusting height difference |
| CN117780334A (en) * | 2024-02-27 | 2024-03-29 | 西南石油大学 | Drilling fluid level measuring device and measuring method |
| CN117780334B (en) * | 2024-02-27 | 2024-05-03 | 西南石油大学 | Drilling fluid level measuring device and measuring method |
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Application publication date: 20190924 |