CN106295219B - A kind of dressing plant's cylinder concentrator calculation method guaranteeing overflow quality and underflow storage capacity - Google Patents
A kind of dressing plant's cylinder concentrator calculation method guaranteeing overflow quality and underflow storage capacity Download PDFInfo
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- CN106295219B CN106295219B CN201610695286.9A CN201610695286A CN106295219B CN 106295219 B CN106295219 B CN 106295219B CN 201610695286 A CN201610695286 A CN 201610695286A CN 106295219 B CN106295219 B CN 106295219B
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Abstract
The present invention relates to a kind of dressing plant's cylinder concentrator calculation methods for guaranteeing overflow quality and underflow storage capacity, belong to thickening equipment technical field.Dressing plant's cylinder concentrator calculation method of the guarantee overflow quality and underflow storage capacity, it include that underflow stores the compressional zone height to be formed when calculating the minimum total depth H of cylinder concentrator, it is to stop arranging the compressional zone height H formed when underflow that underflow, which stores the compressional zone height to be formed,5,The concentrator total depth that technical solution according to the invention is calculated and determined includes the height for meeting storage capacity needs, and selected cylinder concentrator can satisfy overflow quality requirement and the requirement of underflow storage capacity.
Description
Technical field
The present invention relates to a kind of dressing plant's cylinder concentrator calculation methods for guaranteeing overflow quality and underflow storage capacity, belong to
In thickening equipment technical field.
Background technique
The function of dressing plant's concentrator be it is dense, main includes three aspects: 1. receiving ore pulp, 2. dense ore pulp and obtains
3. overflow and underflow is discharged in low concentration overflow and high-concentration underflow.
When dressing plant produces, concentrator continuously receives ore pulp, and overflow is continuously discharged, but only arranges in subsequent filter work
Underflow out.There are two types of its working systems: 1. continuously discharge underflow；2. underflow is not discharged.
There are three the groundwork indexs of dressing plant's concentrator: 1. overflow quality, i.e. effluent concentration；2. underflow quality, i.e.,
Underflow density；3. processing capacity, the i.e. maximum of guarantee overflow quality and underflow quality receive ore pulp ability.These three working indexs
It is decided by ore pulp property and concentrator size.
Main concentrator size is concentrator (vertical disconnected) area and concentrator height, design dressing plant's concentrator requirement
Determine concentrator area and concentrator height.
When concentrator area is sufficiently large, overflow rise it is slow, the overflow rate of climb be less than feed do not allowed access into ore pulp it is excessive
The maximum mineral grain sinking speed of stream, feed do not allowed access into ore pulp overflow maximum mineral grain would not enter overflow
Stream enters underflow as needed, to guarantee overflow quality, that is, guarantees that effluent concentration is sufficiently low.
Concentrator area is sufficiently large and effluent concentration it is sufficiently low under the conditions of, when concentrator height is enough, mineral grain will
Sufficiently sedimentation forms compression layer, and compression layer ensures that underflow quality as underflow discharge, that is, guarantees underflow density foot
Enough height.
It is not discharged underflow when not working due to subsequent filter, concentrator height sufficiently settles in addition to meeting mineral grain to be formed
Compression layer requirement, will also meet formed compression layer storage request when underflow not being discharged.That is, underflow when institute shape is not discharged
It needs to require higher concentrator height at compression layer storage.
Cylinder concentrator is that dressing plant often uses dehydration equipment, is made of Upper cylindrical and lower part inverted conical, Upper cylindrical
Diameter is identical with lower part inverted conical diameter, and the depth of concentrator is the sum of column part depth and tapered segment depth.Cylinder
The specification of concentrator is indicated with body diameter.
When buyer does not propose that change requires, the depth for the general cylinder concentrator that manufactory sells is corresponding with its diameter
One fixed value.It is needed due to not being directed to specific slurry concentrating, which not necessarily adapts to specific slurry concentrating requirement.Due to
It does not account for meeting the needs that formed compression layer storage when underflow is not discharged, the depth is undoubtedly not big enough.
In order to adapt to production requirement, cylinder concentrator is determined in Designing Ore-Dressing Plants, it is necessary to ore pulp property and mineral slurry flux
Based on, it is necessary to while considering that being concentrated and store two aspects requires；It calculates concentrator area and diameter and determines that concentrator is straight
After diameter, it should calculate concentrator depth and determine concentrator depth；Required diameter and depth two ginsengs when cylinder concentrator is ordered goods
Number.
Cylinder concentrator calculation method is selected in current Designing Ore-Dressing Plants is: the dry mine amount of concentrator is fed according to design
The maximum instantaneous overflow volume flow for estimating concentrator, calculates the concentrator area and diameter of needs, to select concentrator.
Presently, there are the problem of first is that, selected in Designing Ore-Dressing Plants and do not calculate when cylinder concentrator and need cylinder dense
Machine depth.
Presently, there are the problem of second is that, in Designing Ore-Dressing Plants select cylinder concentrator do not include cylinder concentrator storage
The needs of ability, selected concentrator depth are less than normal.
Summary of the invention
In order to solve to select not calculating when cylinder concentrator in aforementioned Designing Ore-Dressing Plants to need cylinder concentrator depth, do not have
There are the needs including cylinder concentrator storage capacity, selected concentrator depth these problems less than normal, the present invention provides a kind of guarantor
Demonstrate,prove dressing plant's cylinder concentrator calculation method of overflow quality and underflow storage capacity.It can more accurately be calculated using this method
Dressing plant cylinder concentrator pond depth, the invention is realized by the following technical scheme.
As shown in Figure 1, from overflow downwards be respectively Upper cylindrical in settling section A, decanting zone B, transition region C, guarantee
The minimal compression area (the compressional zone D formed when continuous discharge underflow) of underflow density, underflow store the compressional zone to be formed and (stop arranging bottom
The compressional zone E formed when stream) and inverted conical Nei Paliao area F, wherein guarantee the minimal compression area and bottom of underflow density
There is no boundary between the compressional zone that stream storage is formed, the purpose for distinguishing them is that analysis is facilitated to solve the problems, such as.Settling section height is
H1, decanting zone height is H2, transition region height is H3, guarantee minimal compression area height (continuously shape when discharge underflow of underflow density
At compressional zone height H4), underflow stores the compressional zone height to be formed and (stops arranging the compressional zone height H formed when underflow5), rake material
Area's height is H6.The depth of concentrator is H, H=H1+H2+H3+H4+H5+H6。
Dressing plant's cylinder concentrator calculation method operating method step of the guarantee overflow quality and underflow storage capacity:
The first step determines the maximum allowable flooding velocity for guaranteeing overflow quality, in conjunction with the fluctuation of newly-designed dry mine amount, ore pulp
Fluctuation of concentration and overflow volume flowed fluctuation, which calculate, determines maximum instantaneous overflow volume flow；Second step, with maximum instantaneous overflow
Volume flow and the calculating of maximum allowable flooding velocity need cylinder concentrator area and diameter, that is, most pillar concentrator area
And diameter；Third step selects cylinder concentrator in the sufficiently large optional concentrator of diameter；4th step calculates selected concentrator
The height and concentrator total depth in each area of concentrator.
A kind of dressing plant's cylinder concentrator calculation method guaranteeing overflow quality and underflow storage capacity, it is dense to calculate cylinder
It include that underflow stores the compressional zone height to be formed when the minimum total depth H of machine, it is to stop arranging that underflow, which stores the compressional zone height to be formed,
The compressional zone height H formed when underflow5,WhereinIn formula, δ-solid particle is true
Specific gravity or density, ton/rice3, by testing or designing determination；RPressureThe weight liquid-solid ratio of compressional zone, by testing or designing determination；
tStorageTime corresponding with storage capacity is needed, i.e. ore pulp continuously feed concentrator and maximum duration that filtration operation is shut down, hour,
By counting or designing determination；Settling area required for the 1 ton of solid ore pulp of processing in f- every 24 hours, rice2/ ton/24 hour；RIt gives-
The weight liquid-solid ratio of feed, by testing or designing determination；RRowThe weight liquid-solid ratio of discharge, by testing or designing determination；V- overflow
The sinking speed of middle the largest particles, mm/second, by testing or calculating determination；K- concentrator area effective utilization coefficients, 0.85~
0.95。
The minimum total depth H of the cylinder concentrator is equal to settling section height H1, decanting zone height H2, transition region height H3、
The compressional zone height H formed when continuous discharge underflow4, the compressional zone height H that is formed when stopping arranging underflow5With the area Pa Liao height H6It
With.
In order to avoid disturbing influence causes overflow folder muddy, generally ask for a clarification area height H1>=0.2~0.3 meter.
In order to avoid disturbance causes hypostasis to rise and influences dense effect, generally requiring decanting zone height is H2>=0.3~
0.5 meter.
Transition region height is H3It is usually smaller, it can ignore, i.e. H3=0.
In order to guarantee to settle compression time, to guarantee underflow density, guarantee the minimal compression area height of underflow density (even
The compressional zone height formed when continuous discharge underflow) H4For
In formula, δ-solid particle true specific gravity or density, ton/rice3, by testing or designing determination；
RPressureThe weight liquid-solid ratio of-compressional zone, by testing or designing determination；
tIt is required- reaching the time necessary to sedimentation terminal, hour is determined by experiment；
Settling area required for the 1 ton of solid ore pulp of processing in f-every 24 hours, rice2/ ton/24 hour, referring to live value
Or it calculates according to the following formula
In formula, RIt givesThe weight liquid-solid ratio of-feed, by testing or designing determination；
RRowThe weight liquid-solid ratio of-discharge, by testing or designing determination；
The sinking speed of the largest particles in v-overflow, mm/second, by testing or calculating determination；
K-concentrator area effective utilization coefficients, 0.85~0.95 (taking large values when diameter is big, diameter hour gets the small value).
In order to adapt to the inevitable requirement of subsequent filter operation shutdown, concentrator must have enough compression layer underflow storage energy
Power, the compressional zone height for storing formation must be sufficiently large.Underflow stores the compressional zone concentration to be formed and guarantees underflow density most
The difference very little of small compressional zone concentration, can ignore.Guarantee that the underflow of the underflow storage capacity of concentrator stores the compression to be formed
Area's height (stops arranging the compressional zone height formed) H when underflow5For
In formula, tStorage- corresponding with storage capacity is needed time, i.e. ore pulp continuously feed concentrator and what filtration operation was shut down
Maximum duration, hour, by counting or designing determination.
The area tapered segment Pa Liao height H6It calculates according to the following formula
In formula, α-circular cone bottom sloping, 12 °~10 °, or determine as the case may be；DDirectlyFor the straight of cylinder concentrator
Diameter.Other symbol meanings and value are as hereinbefore.
It is calculated based on above, the minimum-depth H calculating formula for meeting the cylinder concentrator of operation and storage capacity requirement is formula
In, the minimum total depth of H-cylinder concentrator；
H1- settling section height, H1>=0.2~0.3 meter；
H2The minimum constructive height of-decanting zone, H2>=0.3~0.5 meter；
H3- transition region height, it is usually smaller, it can ignore, i.e. H3=0；
H4The minimal compression area height of-guarantee underflow density；
H5- underflow stores the compressional zone height to be formed；
H6The area-Pa Liao height；
δ-solid particle true specific gravity or density, ton/rice3, by testing or designing determination；
RPressureThe weight liquid-solid ratio of-compressional zone, by testing or designing determination；
tIt is required- reaching the time necessary to sedimentation terminal, hour is determined by experiment；
Settling area required for the 1 ton of solid ore pulp of processing in f-every 24 hours, rice2/ ton/24 hour, referring to live value
Or it calculates according to the following formula
In formula, RIt givesThe weight liquid-solid ratio of-feed, by testing or designing determination；
RRowThe weight liquid-solid ratio of-discharge, by testing or designing determination；
The sinking speed of the largest particles in v-overflow, mm/second, by testing or calculating determination；
K-concentrator area effective utilization coefficients, 0.85~0.95 (taking large values when diameter is big, diameter hour gets the small value)；
tStorage- corresponding with storage capacity is needed time, i.e. the longest downtime of filtration operation, hour, by counting or setting
Meter determines；
D-reality selects the close machine horizontal section diameter of cylinder, rice；
α-circular cone bottom sloping, 12 °~10 °, or determine as the case may be；
Other symbol meanings and value are as hereinbefore.
It is calculated based on above, the minimum-depth H for meeting the cylinder concentrator of operation and storage capacity requirement is calculated
The beneficial effects of the present invention are:
1, the concentrator total depth that technical solution according to the invention is calculated and determined includes meeting storage capacity needs
Height, selected cylinder concentrator can satisfy overflow quality requirement and underflow storage capacity requirement；
2, technical solution according to the invention, which calculates selection dressing plant's cylinder concentrator, can be realized more accurate concentrator
It diameter and requires concentrator total depth to calculate, avoid excessive estimation and blindly amplifies；
3, technical solution according to the invention calculates selection dressing plant's cylinder concentrator and can propose accurately to supplier
Concentrator diameter and concentrator total depth is required, realizes the saving of maximum possible；
4, technical solution according to the invention, which calculates, selects dressing plant's cylinder concentrator being capable of and throwing constant in occupied area
Entering science in the case where increasing less has according to ground raising concentrator height, so that meeting subsequent filter work accident causes for a long time
The requirement of shutdown, and more fully utilize land occupation value and Space Value；
5, design and calculation method of the invention can be used for the concentrator and sedimentation type concentrator of other shapes section.
Detailed description of the invention
Fig. 1 is cylinder concentrator structure of the present invention and zoned phenomenon schematic diagram.
In figure: the compressional zone formed when underflow is continuously discharged in A- settling section, the decanting zone B-, C- transition region, D-, and E- stops arranging bottom
The compressional zone formed when stream, the area F- Pa Liao, H- concentrator total depth, H1Settling section height, H2Decanting zone height, H3Transition region
Highly, H4The compressional zone height formed when continuous discharge underflow, H5Stop arranging the compressional zone height formed when underflow, H6The area-Pa Liao
Highly.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
Certain select the oxidation copper concentrate of factory through experiment measure its sinking speed be 0.02 mm/second, feed ore concentration 20%,
The sediment of concentration average out to 60% can be obtained for 18 hours in sedimentation compression in graduated cylinder, and the true specific gravity of copper concentrate is 3, and processing daily is most
Big concentrate dry weight is 210 ton per days, stops row daily underflow 6 hours, thickener depth required for examination selection calculates.
As shown in Figure 1, (one), which calculates, needs cylinder concentrator area and diameter
Ton per day=0.00243 ton Q=210/second
V=0.02 mm/second
K takes 0.9
δ=3 ton/meter3
tIt is required=18 hours
tStorage=6 hours
α takes 12 °
As a result,
Need settling area
F=Qf=210*2.14=449.4 (rice2)
Select concentrator 1
Need cylinder concentrator horizontal section diameter
Accordingly, it can primarily determine using thickener 1, periphery rack driving pattern TNB-24 type cylinder.The machine diameter is 24
Rice, depth are 3.7 meters.
(2) depth is calculated
Take H1Equal to 0.3 meter, H2Equal to 0.5 meter, H3Equal to 0 meter, H1+H2+H3=0.8 meter, the minimum of cylinder concentrator is total
Depth H are as follows:
Selected concentrator height is not able to satisfy production requirement, and when order should be 24 meters to the clear diameter of supplier, depth
It is 3.82 meters；It is H that underflow, which stores the compressional zone height to be formed,5It is 0.12 meter, it is not possible to ignore, the high foot of concentrator increases by 0.12 meter
Dressing plant caused by can stopping production 6 hours to avoid filtering is shut down comprehensively；When subsequent filter operation downtime is longer, underflow storage
The compressional zone height of formation is H5Importance it is bigger.
Embodiment 2
Certain select the oxidation copper concentrate of factory through experiment measure its sinking speed be 0.02 mm/second, feed ore concentration 20%, most
Small feed ore concentration is 15%, and the sediment of concentration average out to 60% can be obtained for 18 hours in sedimentation compression in graduated cylinder, copper concentrate
True specific gravity is 3, and handling maximum concentrate dry weight daily is 210 ton per days, and daily one class of filtration operation, per tour produces 6 hours, examination choosing
Select thickener depth required for calculating.
As shown in Figure 1, (one), which calculates, needs cylinder concentrator area and diameter
Ton per day=0.00243 ton Q=210/second
V=0.02 mm/second
K takes 0.9
δ=3 ton/meter3
tIt is required=18 hours
tStorage=24-1*6=18 hours
α takes 12 °
As a result,
Need settling area
F=Qf=210*3.22=676.2 (rice2)
Select concentrator 1
Need cylinder concentrator horizontal section diameter
Thickener 1, periphery roller driven type NG-30 type cylinder is used accordingly.D=30 meters of the machine diameter, depth 3.6
Rice.
(2) depth is calculated
Take H1Equal to 0.3 meter, H2Equal to 0.5 meter, H3Equal to 0 meter, H1+H2+H3=0.8 meter, the minimum of cylinder concentrator is total
Depth H are as follows:
As can be seen that the minimum-depth H of the cylinder concentrator calculated is much larger than selected concentrator depth, selected concentrator is high
Degree is not able to satisfy production requirement, and when order should be 30 meters to the clear diameter of supplier, and depth is 4.45 meters；Underflow stores to be formed
Compressional zone height be H5It is 0.24 meter, it is not possible to ignore, the high foot of concentrator increases by 0.23 meter can be small to avoid filtering halt production 18
When caused dressing plant shut down comprehensively；When subsequent filter operation downtime is longer, underflow stores the compressional zone height to be formed and is
H5Importance it is bigger.
Embodiment 3
Certain select the oxidation copper concentrate of factory through experiment measure its sinking speed be 0.02 mm/second, feed ore concentration 20%, most
Small feed ore concentration is 15%, and the sediment of concentration average out to 60% can be obtained for 18 hours in sedimentation compression in graduated cylinder, copper concentrate
True specific gravity is 3, and handling maximum concentrate dry weight daily is 210 ton per days, and daily one class of filtration operation, per tour produces 6 hours, filtering
Most times that overhaul and transformation need are 48 hours, thickener depth required for examination selection calculates.
As shown in Figure 1, (one), which calculates, needs cylinder concentrator area and diameter
Ton per day=0.00243 ton Q=210/second
V=0.02 mm/second
K takes 0.9
δ=3 ton/meter3
tIt is required=18 hours
tStorage=24-1*6+48=66 hours
α takes 12 °
As a result,
Need settling area
F=Qf=210*3.22=676.2 (rice2)
Select concentrator 1
Need cylinder concentrator horizontal section diameter
Thickener 1, periphery roller driven type NG-30 type cylinder is used accordingly.D=30 meters of the machine diameter, depth 3.6
Rice.
(2) depth is calculated
Take H1Equal to 0.3 meter, H2Equal to 0.5 meter, H3Equal to 0 meter, H1+H2+H3=0.8 meter, the minimum of cylinder concentrator is total
Depth H are as follows:
As can be seen that the minimum-depth H of the cylinder concentrator calculated is much larger than selected concentrator depth, selected concentrator is high
Degree is not able to satisfy production requirement, and when order should be 30 meters to the clear diameter of supplier, and depth is 5.08 meters；Filtration operation is shut down
Time is after 66 hours, and it is H that underflow, which stores the compressional zone height to be formed,5It is 0.86 meter, it is not possible to ignore, the high foot of concentrator increases
0.86 meter can to avoid filtering stop production 66 hours caused by dressing plant shut down comprehensively；Underflow stores the compressional zone height H to be formed5With
Concentrator height compares all very littles with diameter, and investment increases and project amount increases seldom, but can satisfy subsequent filter and stop for some reason
Produce 48 hours needs；Moreover, since cylinder concentrator height is much smaller than its diameter, it is high that underflow stores the compressional zone to be formed
Spend H5The off-time, underflow stored the compressional zone height H to be formed all there are also increased potentiality for some reason with subsequent filter5And concentrator
The meaning that overall height H conscientiously calculates is obvious, also embodies that the present invention relates to the importance of calculation method and meanings.
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (1)
1. a kind of dressing plant's cylinder concentrator calculation method for guaranteeing overflow quality and underflow storage capacity, it is characterised in that: meter
It include that underflow stores the compressional zone height to be formed when calculating the minimum total depth H of cylinder concentrator, underflow stores the compressional zone to be formed
Height is to stop arranging the compressional zone height H formed when underflow5,WhereinFormula
In, δ-solid particle true specific gravity or density, ton/rice3, by testing or designing determination；RPressureThe weight liquid-solid ratio of compressional zone, by
Experiment or design determine；tStorageTime corresponding with storage capacity is needed, i.e. ore pulp continuously feed concentrator and filtration operation is shut down
Maximum duration, hour, by counting or designing determination；Settling area required for the 1 ton of solid ore pulp of processing in f- every 24 hours,
Rice2/ ton/24 hour；RIt givesThe weight liquid-solid ratio of feed, by testing or designing determination；RRowThe weight liquid-solid ratio of discharge, by testing
Or design determines；The sinking speed of the largest particles in v- overflow, mm/second, by testing or calculating determination；K- concentrator area has
Effect usage factor, 0.85~0.95；
The minimum total depth H of the cylinder concentrator is equal to settling section height H1, decanting zone height H2, transition region height H3, it is continuous
The compressional zone height H formed when underflow is discharged4, the compressional zone height H that is formed when stopping arranging underflow5With the area Pa Liao height H6The sum of.
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| CN201610695286.9A CN106295219B (en) | 2016-08-22 | 2016-08-22 | A kind of dressing plant's cylinder concentrator calculation method guaranteeing overflow quality and underflow storage capacity |
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| AU2006222735A1 (en) * | 2005-10-06 | 2007-04-26 | Robert Hume Pannell | Multi-media clarifier or thickener |
| CN101559297A (en) * | 2009-05-08 | 2009-10-21 | 昆明理工大学 | Method and device for forced discharge of high-concentration underflow of a thickener |
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2016
- 2016-08-22 CN CN201610695286.9A patent/CN106295219B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006222735A1 (en) * | 2005-10-06 | 2007-04-26 | Robert Hume Pannell | Multi-media clarifier or thickener |
| CN101559297A (en) * | 2009-05-08 | 2009-10-21 | 昆明理工大学 | Method and device for forced discharge of high-concentration underflow of a thickener |
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| Title |
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| 南芬选矿厂自流式浓密机高效化研究;游维 等;《中国矿业》;20001231(第s1期);第754-760页 |
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