CN107344138A - A kind of ore mill control method and device - Google Patents
A kind of ore mill control method and device Download PDFInfo
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- CN107344138A CN107344138A CN201610293039.6A CN201610293039A CN107344138A CN 107344138 A CN107344138 A CN 107344138A CN 201610293039 A CN201610293039 A CN 201610293039A CN 107344138 A CN107344138 A CN 107344138A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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Abstract
The embodiments of the invention provide a kind of ore mill control method and device, wherein method includes：Obtain ore mill current power R；Determine current power R and Rmid‑ΔRAnd Rmid+ΔRMagnitude relationship, wherein RmidFor the median of ore grinding acc power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax‑ΔR, RmaxFor ore grinding acc power max-thresholds；As R ＜ Rmid‑ΔRWhen, increase ore mill inlet amount；As R ＞ Rmid+ΔRWhen, reduce ore mill inlet amount；Work as Rmid‑ΔR=＜ R and R ＜=Rmid+ΔRWhen, according to the variation tendency and preset strategy of ore grinding acc power, finely tune ore mill inlet amount.To the power of ore mill, this important parameter is monitored the present invention in real time, coarse adjustment or fine setting are carried out by the load (inlet amount) to ore mill, ore mill is set to work under the optimal condition always, neither underrun wastes electric energy, also excess load does not cause swollen tripe, and production process can be with the continuous service of stability and high efficiency.
Description
Technical field
The present invention relates to metallurgical technology, more particularly to a kind of ore mill control method and device.
Background technology
Processing to ore is typically the basis of metallurgical industry.It is most in addition to a small number of rich ores rich in valuable mineral
Ore belongs to the lean ore containing a large amount of gangues.These lean ores are because useful component content is low, and mineral composition is complicated, if being used directly to
Extraction metal is smelted, then energy consumption is big, production cost is high, therefore ore must carry out ore dressing processing before smelting, to abandon absolutely
Most of gangue, the content of valuable mineral is set to reach the requirement of smelting.And the process of ore dressing mainly includes breaking raw ore ore
Broken screening, grind grading, sort, the link such as essence mine dehydration, grinding operation is the crucial work that one of offer sorts raw material among these
Sequence.
The ore of broken mistake is mainly crushed to suitable granularity by grinding process, and the mineral that crushed are supplied into choosing
Other process.Control to grinding process is not only related to whether production can be smoothed out, and whether grinding efficiency is higher, and directly
Have influence on the quality index of ore milling product.After material enters ore mill (also can abbreviation grinding machine), when inventory (or perhaps is located
Reason amount, inlet amount) it is less when, ore mill is constantly in underrun, and efficiency is low, wastes electric energy, adds into
This；And when inventory is excessive, due to ore mill overload, disposal ability is limited, will appear from " rise tripe " phenomenon (i.e. material
All it is deposited in ore grinding machine drum body, can not excretes), so as to influence to produce, also need to shut down cleaning under serious conditions.
Inventor realize the present invention during find, in the prior art, the judgement to ore mill load/treating capacity
Substantially there is very big error is judged yet with artificial by the experience of operation employee, it is impossible to make a response in time, can not be pre-
Sentence, thus it is more passive to the control ratio of ore mill load, sometimes even occur and come not when discovery ore mill rises by tripe
And handle and cause the consequence stopped work that stops production.There has been no a kind of preferably method in the prior art can more accurately control mill
Ore deposit machine treating capacity, ore mill neither underrun is set to waste electric energy, also not overload operation.
The content of the invention
To overcome problems of the prior art, the present invention provides a kind of ore mill control method and device, realization pair
The accurate control of ore mill load.
First aspect according to embodiments of the present invention, there is provided a kind of ore mill control method, methods described include：
Obtain ore mill current power R；
Determine current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship, wherein RmidFor ore grinding acc power reasonable interval
Median, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore grinding acc power max-thresholds；
As R ＜ Rmid-ΔRWhen, increase ore mill inlet amount；
As R ＞ Rmid+ΔRWhen, reduce ore mill inlet amount；
Work as Rmid-ΔR=＜ R and R ＜=Rmid+ΔRWhen, according to the variation tendency and preset strategy of ore grinding acc power, fine setting
Ore mill inlet amount；
Wherein, the variation tendency is to specify the ore mill changed power in duration to become using current time as the first of terminal
Gesture.
Optionally, according to the variation tendency and preset strategy of ore grinding acc power, ore mill inlet amount is finely tuned, including：
If specified described first in duration, ore grinding acc power keeps ascendant trend, then according to power up speeds phase
Ore mill inlet amount should be reduced；
If specified described first in duration, ore grinding acc power keeps downward trend, then according to power drop speed phase
Ore mill inlet amount should be increased；
If specified described first in duration, ore grinding acc power has liter to have drop, then ore mill inlet amount is not adjusted
It is whole.
Optionally, drop judges to keeping ascendant trend, holding downward trend, having to rise in the following way：
CalculateWithWherein,For ore grinding acc power in current period
Average,For ore grinding acc power average in a upper cycle,It is for ore grinding acc power average, current period in phase week before last
From current time-T to the period of current time, a upper cycle be from current time -2T to current time-T period, on
The upper cycle, described first specified duration to be the length in each cycle from current time -3T to current time -2T period, T
Including the current period, a upper cycle and phase week before last；
If RΔ-last＞ 0 and RΔ-now＞ 0, then judge that ore grinding acc power keeps ascendant trend；
If RΔ-last＜ 0 and RΔ-now＜ 0, then judge that ore grinding acc power keeps downward trend；
If RΔ-last＞ 0 and RΔ-now＜ 0, or, RΔ-last＜ 0 and RΔ-now＞ 0, then judge that ore grinding acc power has liter to have
Drop.
Optionally, ore mill inlet amount is accordingly reduced according to power up speeds, including：
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR3When, then make Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR2And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR3When, then make Hset=Hcur+
Hmax*(-PH2)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR1And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR2When, then make Hset=Hcur+
Hmax*(-PH1)；
As (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally, ore mill inlet amount is accordingly increased according to power drop speed, including：
As (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR3) when, then make Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR2) when, then make Hset
=Hcur+Hmax*PH2；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR1) when, then make Hset
=Hcur+Hmax*PH1；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally：
As R ＜ Rmid-ΔRWhen, increase ore mill inlet amount, including：
As R ＜ Rmid-ΔRWhen, by HsetIt is arranged to Hmax；
As R ＞ Rmid+ΔRWhen, ore mill inlet amount is reduced, including：
As R ＞ Rmid+ΔRWhen, make Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederHSFor preset percentage.
Optionally, methods described also includes, in the following way to RmaxIt is adjusted：
Every the average of R in the second preset duration, calculating second preset duration
IfThen heighten Rmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
Optionally, by equation below to RmaxIt is adjusted：
Second aspect according to embodiments of the present invention, there is provided a kind of ore mill control device, described device include：
Power acquisition module, for obtaining ore mill current power R；
Power comparison module, for determining current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship, wherein RmidFor mill
The median of ore deposit acc power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore mill
Power max-thresholds；
Coarse adjustment module, for as R ＜ Rmid-ΔRWhen, increase ore mill inlet amount, as R ＞ Rmid+ΔRWhen, reduce ore mill
Inlet amount；
Module is finely tuned, for working as Rmid-ΔR=＜ R and R ＜=Rmid+ΔRWhen, according to the variation tendency of ore grinding acc power and
Preset strategy, finely tune ore mill inlet amount；
Wherein, the variation tendency is to specify the ore mill changed power in duration to become using current time as the first of terminal
Gesture.
Optionally, the fine setting module includes：
First fine setting submodule, if for being specified described first in duration, ore grinding acc power keeps ascendant trend, then
Ore mill inlet amount is accordingly reduced according to power up speeds；
Second fine setting submodule, if for being specified described first in duration, ore grinding acc power keeps downward trend, then
Ore mill inlet amount is accordingly increased according to power drop speed；
3rd fine setting submodule, if for being specified described first in duration, ore grinding acc power has liter to have drop, then not right
Ore mill inlet amount is adjusted.
Optionally, it is described fine setting module in the following way to keep ascendant trend, keep downward trend, have rise have drop into
Row judges：
CalculateWithWherein,For ore grinding acc power in current period
Average,For ore grinding acc power average in a upper cycle,It is for ore grinding acc power average, current period in phase week before last
From current time-T to the period of current time, a upper cycle be from current time -2T to current time-T period, on
The upper cycle, described first specified duration to be the length in each cycle from current time -3T to current time -2T period, T
Including the current period, a upper cycle and phase week before last；
If RΔ-last＞ 0 and RΔ-now＞ 0, then judge that ore grinding acc power keeps ascendant trend；
If RΔ-last＜ 0 and RΔ-now＜ 0, then judge that ore grinding acc power keeps downward trend；
If RΔ-last＞ 0 and RΔ-now＜ 0, or, RΔ-last＜ 0 and RΔ-now＞ 0, then judge that ore grinding acc power has liter to have
Drop.
Optionally, ore mill inlet amount is accordingly reduced according to power up speeds, including：
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR3When, then make Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR2And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR3When, then make Hset=Hcur+
Hmax*(-PH2)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR1And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR2When, then make Hset=Hcur+
Hmax*(-PH1)；
As (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally, ore mill inlet amount is accordingly increased according to power drop speed, including：
As (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR3) when, then make Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR2) when, then make Hset
=Hcur+Hmax*PH2；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR1) when, then make Hset
=Hcur+Hmax*PH1；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally, the coarse adjustment module is used for：
As R ＜ Rmid-ΔRWhen, by HsetIt is arranged to Hmax；
As R ＞ Rmid+ΔRWhen, make Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederHSFor preset percentage.
Optionally, described device also includes：
Self-learning module, in the following way to RmaxIt is adjusted：
Every the average of R in the second preset duration, calculating second preset duration
IfThen heighten Rmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
Optionally, by equation below to RmaxIt is adjusted：
The technical scheme that embodiments of the invention provide can include the following benefits：
In embodiments of the present invention, to the power of ore mill, this important parameter is monitored in real time, according to current power
And current power and the relation of power reasonable interval, coarse adjustment or fine setting are carried out to the load (inlet amount) of ore mill, make ore mill
It is able to work under the optimal condition always, neither underrun wastes electric energy, and also excess load does not cause swollen tripe, and production process can
With the continuous service of stability and high efficiency, ore grinding yield is improved on the premise of ensuring to produce stable operation and ore grinding quality, finally
Improve economic benefit.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Fig. 1 is a kind of flow chart of ore mill control method according to an exemplary embodiment of the invention；
Fig. 2 is to show cycle schematic diagram according to an exemplary embodiment of the invention；
Fig. 3 is a kind of flow chart of ore mill control method according to an exemplary embodiment of the invention；
Fig. 4 is the systematic schematic diagram according to an exemplary embodiment of the invention；
Fig. 5 is a kind of flow chart of ore mill control method according to an exemplary embodiment of the invention；
Fig. 6 is a kind of schematic diagram of ore mill control device according to an exemplary embodiment of the invention；
Fig. 7 is a kind of schematic diagram of ore mill control device according to an exemplary embodiment of the invention；
Fig. 8 is a kind of schematic diagram of ore mill control device according to an exemplary embodiment of the invention.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
Fig. 1 is a kind of flow chart of ore mill control method according to an exemplary embodiment of the invention.This method
It can be used for control device, such as single-chip microcomputer, host computer.
Shown in Figure 1, this method can include multiple steps.
Step S101, obtain ore mill current power R.
Wherein current power R is detected value.For example, can with it is per minute collection ore mill current power value, meanwhile,
The performance number collected can be stored in background data base, judge and analyze to use for follow-up.
In addition, if multiple power detection values can be collected when gathering every time, can average as current power
Value.
Step S102, determine current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship, wherein RmidFor ore grinding acc power
The median of reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxIt is maximum for ore grinding acc power
Threshold value.
Wherein, ΔR、RmaxIt is preset value.These certain preset values nor immobilize, can optionally be adjusted
It is whole.
In the present embodiment, in order to ensure that production run is stable, an ore grinding acc power reasonable interval can be pre-set, is somebody's turn to do
Section is [Rmid-ΔR,Rmid+ΔR], then implement to control according to current power and the relation of the power reasonable interval.
ΔRFor with RmidCentered on permission undulate quantity, namely ΔRI.e. with RmidFor axis, the fluctuation width up and down allowed
Degree, its size for example typically could be arranged to Rmax2~3%, specifically can be depending on on-site actual situations.
Step S103, as R ＜ Rmid-ΔRWhen, increase ore mill inlet amount.
Now illustrate that ore mill load is seriously less than normal, efficiency is low, it should as early as possible by ore mill even in a manner of most fast
Reason amount elevates.As to how changing ore mill treating capacity, the present embodiment is simultaneously not limited, as an example, if logical
Cross ore deposit machine to vibration give ore mill injecting material, then can improve rock feeder to ore deposit frequency, so as to improve the processing of ore mill
Amount/inlet amount.
Step S104, as R ＞ Rmid+ΔRWhen, reduce ore mill inlet amount.
Now illustrate ore mill just in overload operation, it should ore mill treating capacity lowers as early as possible.As an example, can
With reduce rock feeder to ore deposit frequency.
Step S105, works as Rmid-ΔR=＜ R and R ＜=Rmid+ΔRWhen, according to the variation tendency of ore grinding acc power and preset
Strategy, finely tune ore mill inlet amount.
Now illustrate that ore mill is in reasonable traffic coverage, it is not necessary to significantly adjust namely need not carry out slightly
Adjust, although current do not go wrong but in order to avoid problem occurs, it is necessary to which the change with reference to ore grinding acc power becomes in future
Gesture is finely adjusted.
The variation tendency is that the ore mill changed power trend in duration is specified using current time as the first of terminal.
Within a period of time before current time, namely described first specifies in duration, by investigating ore grinding acc power
Historical data, although may find that the power of ore mill is currently at reasonable interval, its change shows certain not
Good trend, such as rising always, or declining always.In order to should be to this bad trend, it is necessary to carry out corresponding micro-
Adjust, power disengaging reasonable interval is ultimately resulted in avoid the trend from expanding.
For how to be finely adjusted according to variation tendency, namely the particular content of preset strategy, the present embodiment and without
Limitation, those skilled in the art can according to demand or field condition voluntarily designs, these strategies that can be used here
All without departing from the spirit and scope of the present invention.
As an example, in the present embodiment or some other embodiments of the invention, according to the variation tendency of ore grinding acc power
And preset strategy, ore mill inlet amount is finely tuned, can be included：
If specified described first in duration, ore grinding acc power keeps ascendant trend, then according to power up speeds phase
Ore mill inlet amount should be reduced.
If specified described first in duration, ore grinding acc power keeps downward trend, then according to power drop speed phase
Ore mill inlet amount should be increased.
For example, if power rise or decline is too fast, inlet amount should carry out reduction or increase by a relatively large margin, and such as
Fruit power rise or decline are not that quickly, then inlet amount can carry out reduction or increase more by a small margin.
If specified described first in duration, ore grinding acc power has liter to have drop, then ore mill inlet amount is not adjusted
It is whole.
If in addition, being specified described first in duration, ore grinding acc power keeps constant, then also not to ore mill inlet amount
It is adjusted.
As an example, in the present embodiment or some other embodiments of the invention, can be in the following way in holding
The trend of liter, keep downward trend, there is liter to there is drop to be judged：
1) calculateWith
Wherein,For ore grinding acc power average in current period,For ore grinding acc power average in a upper cycle,For ore grinding acc power average in phase week before last.
Current period is period from current time-T to current time, and a upper cycle is from current time -2T to ought
M- T period when preceding, phase week before last are from current time -3T to current time -2T period, and T is the length in each cycle
Degree, described first specifies duration to include the current period, a upper cycle and phase week before last.
As an example, the division for the cycle can be found in shown in Fig. 2.
If 2) RΔ-last＞ 0 and RΔ-now＞ 0, then judge that ore grinding acc power keeps ascendant trend.
Because within past continuous two cycles, power average is all increasing, it is possible to judges that ore grinding acc power is protected
Hold ascendant trend.
If 3) RΔ-last＜ 0 and RΔ-now＜ 0, then judge that ore grinding acc power keeps downward trend.
Similarly, because within past continuous two cycles, power average is all reducing, it is possible to judges ore mill work(
Rate keeps downward trend.
If 4) RΔ-last＞ 0 and RΔ-now＜ 0, or, RΔ-last＜ 0 and RΔ-now＞ 0, then judge that ore grinding acc power has liter
There is drop.
Having to rise has drop representative to be in poised state, it is possible to does not adjust.
If HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.Then as an example, in the present embodiment or some other embodiments of the invention, according to power
The rate of climb accordingly reduces ore mill inlet amount, can include：
A1) as (RΔ-last+RΔ-now)/2 ＞=Rmax*PR3When, then make Hset=Hcur+Hmax*(-PH3)。
Such a situation represents that power up speeds are very fast, so reply HsetCarry out very big reduction.
A2) as (RΔ-last+RΔ-now)/2 ＞=Rmax*PR2And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR3When, then make Hset=
Hcur+Hmax*(-PH2)。
Such a situation represents power up speeds than very fast, so reply HsetIt is compared big reduction.
A3) as (RΔ-last+RΔ-now)/2 ＞=Rmax*PR1And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR2When, then make Hset=
Hcur+Hmax*(-PH1)。
Such a situation represents that power up speeds are general, it is possible to HsetCarry out reduction slightly.
A4) as (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR1When, then do not adjust Hset。
Such a situation represents that power up speeds can be ignored, it is possible to does not adjust Hset。
Similar, in the present embodiment or some other embodiments of the invention, mill is accordingly increased according to power drop speed
Ore deposit machine inlet amount, can include：
B1) as (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR3) when, then make Hset=Hcur+Hmax*PH3。
Such a situation represents that power drop speed is very fast, so reply HsetCarry out very big lifting.
B2) as (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR2) when, then make
Hset=Hcur+Hmax*PH2。
Such a situation represents that power drop speed ratio is very fast, so reply HsetIt is compared big lifting.
B3) as (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR1) when, then make
Hset=Hcur+Hmax*PH1。
Such a situation represents that power drop speed is general, it is possible to HsetCarry out lifting slightly.
B4) as (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR1) when, then do not adjust Hset。
Such a situation represents that power drop speed can be ignored, it is possible to does not adjust Hset。
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
As an example, in the present embodiment or some other embodiments of the invention, when needing to carry out coarse adjustment, i.e., as R ＜
Rmid-ΔROr R ＞ Rmid+ΔRWhen, following coarse adjustment can be carried out：
As R ＜ Rmid-ΔRWhen, by HsetIt is arranged to Hmax。
As R ＞ Rmid+ΔRWhen, make Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederHSFor preset percentage.
It should be noted that in the present invention, PR3、PR2、PR1、PH3、PH2、PH1、PHSThese percentages be on the occasion of.As for
PR3、PR2、PR1、PH3、PH2、PH1、PHSDeng concrete numerical value the present embodiment and be not limited, those skilled in the art can basis
Demand or field condition are voluntarily set.
For example, the numerical value of these percentages may be referred to shown in table 1：
Table 1
In addition, when system operation for a period of time after, can be based on historical data to RmaxAutomatically updated, to ensure to grind
Ore deposit machine overall efficiency highest.
So shown in Figure 3, methods described can also include：
Step S301, in the following way to RmaxIt is adjusted：
Every the average of R in the second preset duration, calculating second preset duration
IfThen heighten Rmax；
IfThen turn down Rmax。
Wherein RrFor ore mill rated power.
For example, the second preset duration can be N number of T durations, i.e. N*T, wherein N are natural number.
As an example, can be by equation below to RmaxIt is adjusted：
After the completion of so adjusting, system is by according to new RmaxRun and controlled, to reach the function of self study.
In the present embodiment, to the power of ore mill, this important parameter is monitored in real time, according to current power and is worked as
The relation of preceding power and power reasonable interval, coarse adjustment or fine setting are carried out to the load (inlet amount) of ore mill, enable ore mill
Work under the optimal condition always, neither underrun wastes electric energy, and also excess load does not cause swollen tripe, and production process can be steady
Fixed efficient continuous service, ore grinding yield is improved on the premise of ensuring to produce stable operation and ore grinding quality, final to improve
Economic benefit.
The present invention program is further described in conjunction with concrete scene below.
Fig. 4 is the systematic schematic diagram according to an exemplary embodiment of the invention.
Power detecting unit：The unit detects ore mill power data in real time, and is stored in the database on backstage；
Database：For depositing the data that power detecting unit is detected, used for computing unit；
Computing unit：The unit reads data, and the arranges value according to input and embodiment control thinking side from database
The program of method, the frequency of vibrofeeder is calculated, finally exported result of calculation to control unit；
Control unit：For controlling vibrofeeder to give ore deposit frequency according to result of calculation.
Fig. 5 is a kind of flow chart of ore mill control method according to an exemplary embodiment of the invention.Including with
Lower step：
Step S501, carry out system initialization, including input Rmid、T、PR3、PH3、Hmax、RrEtc. the value of numerous parameters.
These parameter values can be selected according to live ore mill running situation.
Step S502, real-time acquisition ore mill performance number R (such as per minute), and deposit into background data base.
Step S503, every the cycle T time (minute), circulation performs following steps.
Step S504, the power average value of phase week before last is assigned to
Step S505, the power average value in a upper cycle was assigned to
Step S506, calculate the power average value of current period and be assigned to
Step S507, calculated the power variation R from phase week before last to a upper cycleΔ-last。
Step S508, calculated the power variation R from a upper cycle to current periodΔ-now。
Step S509, judge current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship.
Step S510, if R ＜ Rmid-ΔR, then it is maximum to ore deposit set of frequency by rock feeder.
Step S511, if R ＞ Rmid+ΔR, then reduce rock feeder and give ore deposit frequency.
Step S512, if Rmid-ΔR=＜ R and R ＜=Rmid+ΔR, then according to RΔ-lastAnd RΔ-nowThe change reflected
Change trend is finely adjusted.
In the present embodiment, to the power of ore mill, this important parameter is monitored in real time, according to current power and is worked as
The relation of preceding power and power reasonable interval, coarse adjustment or fine setting are carried out to the load (inlet amount) of ore mill, enable ore mill
Work under the optimal condition always, neither underrun wastes electric energy, and also excess load does not cause swollen tripe, and production process can be steady
Fixed efficient continuous service, ore grinding yield is improved on the premise of ensuring to produce stable operation and ore grinding quality, final to improve
Economic benefit.
Following is apparatus of the present invention embodiment, can be used for performing the inventive method embodiment.It is real for apparatus of the present invention
The details not disclosed in example is applied, refer to the inventive method embodiment.
Fig. 6 is a kind of signal of ore mill control device according to an exemplary embodiment of the invention.Referring to Fig. 6 institutes
Show, described device can include：
Power acquisition module 601, for obtaining ore mill current power R；
Power comparison module 602, for determining current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship, wherein Rmid
For the median of ore grinding acc power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor mill
Ore deposit acc power max-thresholds；
Coarse adjustment module 603, for as R ＜ Rmid-ΔRWhen, increase ore mill inlet amount, as R ＞ Rmid+ΔRWhen, reduce mill
Ore deposit machine inlet amount；
Module 604 is finely tuned, for working as Rmid-ΔR=＜ R and R ＜=Rmid+ΔRWhen, become according to the change of ore grinding acc power
Gesture and preset strategy, finely tune ore mill inlet amount；
Wherein, the variation tendency is to specify the ore mill changed power in duration to become using current time as the first of terminal
Gesture.
Shown in Figure 7, in the present embodiment or some other embodiments of the invention, the fine setting module includes：
First fine setting submodule 701, if for being specified described first in duration, ore grinding acc power keeps rising to become
Gesture, then ore mill inlet amount is accordingly reduced according to power up speeds；
Second fine setting submodule 702, if for being specified described first in duration, ore grinding acc power keeps decline to become
Gesture, then ore mill inlet amount is accordingly increased according to power drop speed；
3rd fine setting submodule 703, if for being specified described first in duration, ore grinding acc power has liter to have drop, then
Ore mill inlet amount is not adjusted.
In the present embodiment or some other embodiments of the invention, the fine setting module is in the following way to keeping rising
Trend, keep downward trend, there is liter to there is drop to be judged：
CalculateWithWherein,For ore grinding acc power in current period
Average,For ore grinding acc power average in a upper cycle,It is for ore grinding acc power average, current period in phase week before last
From current time-T to the period of current time, a upper cycle be from current time -2T to current time-T period, on
The upper cycle, described first specified duration to be the length in each cycle from current time -3T to current time -2T period, T
Including the current period, a upper cycle and phase week before last；
If RΔ-last＞ 0 and RΔ-now＞ 0, then judge that ore grinding acc power keeps ascendant trend；
If RΔ-last＜ 0 and RΔ-now＜ 0, then judge that ore grinding acc power keeps downward trend；
If RΔ-last＞ 0 and RΔ-now＜ 0, or, RΔ-last＜ 0 and RΔ-now＞ 0, then judge that ore grinding acc power has liter to have
Drop.
In the present embodiment or some other embodiments of the invention, ore mill charging is accordingly reduced according to power up speeds
Amount, including：
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR3When, then make Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR2And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR3When, then make Hset=Hcur+
Hmax*(-PH2)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR1And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR2When, then make Hset=Hcur+
Hmax*(-PH1)；
As (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
In the present embodiment or some other embodiments of the invention, ore mill charging is accordingly increased according to power drop speed
Amount, including：
As (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR3) when, then make Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR2) when, then make Hset
=Hcur+Hmax*PH2；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR1) when, then make Hset
=Hcur+Hmax*PH1；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
In the present embodiment or some other embodiments of the invention, the coarse adjustment module is used for：
As R ＜ Rmid-ΔRWhen, by HsetIt is arranged to Hmax；
As R ＞ Rmid+ΔRWhen, make Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder,
HmaxOre deposit frequency maxima, P are given for vibrofeederHSFor preset percentage.
Referring also to shown in Fig. 8, in the present embodiment or some other embodiments of the invention, described device also includes：
Self-learning module 801, in the following way to RmaxIt is adjusted：
Every the average of R in the second preset duration, calculating second preset duration
IfThen heighten Rmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
In the present embodiment or some other embodiments of the invention, by equation below to RmaxIt is adjusted：
In the present embodiment, to the power of ore mill, this important parameter is monitored in real time, according to current power and is worked as
The relation of preceding power and power reasonable interval, coarse adjustment or fine setting are carried out to the load (inlet amount) of ore mill, enable ore mill
Work under the optimal condition always, neither underrun wastes electric energy, and also excess load does not cause swollen tripe, and production process can be steady
Fixed efficient continuous service, ore grinding yield is improved on the premise of ensuring to produce stable operation and ore grinding quality, final to improve
Economic benefit.
On the device in above-described embodiment, wherein unit module perform the concrete mode of operation relevant
It is described in detail in the embodiment of this method, explanation will be not set forth in detail herein.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledges in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by appended
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (16)
1. a kind of ore mill control method, it is characterised in that methods described includes：
Obtain ore mill current power R；
Determine current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship, wherein RmidFor in ore grinding acc power reasonable interval
Between be worth, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore grinding acc power max-thresholds；
As R ＜ Rmid-ΔRWhen, increase ore mill inlet amount；
As R ＞ Rmid+ΔRWhen, reduce ore mill inlet amount；
Work as Rmid-ΔR=＜ R and R ＜=Rmid+ΔRWhen, according to the variation tendency and preset strategy of ore grinding acc power, finely tune ore grinding
Machine inlet amount；
Wherein, the variation tendency is that the ore mill changed power trend in duration is specified using current time as the first of terminal.
2. according to the method for claim 1, it is characterised in that according to the variation tendency and preset strategy of ore grinding acc power,
Ore mill inlet amount is finely tuned, including：
If specified described first in duration, ore grinding acc power keeps ascendant trend, then is accordingly dropped according to power up speeds
Low ore mill inlet amount；
If specified described first in duration, ore grinding acc power keeps downward trend, then is accordingly increased according to power drop speed
Add ore mill inlet amount；
If specified described first in duration, ore grinding acc power has liter to have drop, then ore mill inlet amount is not adjusted.
3. according to the method for claim 2, it is characterised in that in the following way to keeping ascendant trend, keeping declining
Trend, there is liter to there is drop to be judged：
CalculateWithWherein,For ore grinding acc power average in current period,For ore grinding acc power average in a upper cycle,For ore grinding acc power average in phase week before last, current period is from current
When m- T to current time period, a upper cycle be from current time -2T to current time-T period, phase week before last
To be the length in each cycle from current time -3T to current time -2T period, T, described first specifies duration to include institute
Stated current period, a upper cycle and phase week before last；
If RΔ-last＞ 0 and RΔ-now＞ 0, then judge that ore grinding acc power keeps ascendant trend；
If RΔ-last＜ 0 and RΔ-now＜ 0, then judge that ore grinding acc power keeps downward trend；
If RΔ-last＞ 0 and RΔ-now＜ 0, or, RΔ-last＜ 0 and RΔ-now＞ 0, then judge that ore grinding acc power has liter to have drop.
4. according to the method for claim 3, it is characterised in that ore mill charging is accordingly reduced according to power up speeds
Amount, including：
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR3When, then make Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR2And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR3When, then make Hset=Hcur+Hmax*
(-PH2)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR1And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR2When, then make Hset=Hcur+Hmax*
(-PH1)；
As (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
5. according to the method for claim 3, it is characterised in that ore mill charging is accordingly increased according to power drop speed
Amount, including：
As (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR3) when, then make Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR2) when, then make Hset=Hcur
+Hmax*PH2；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR1) when, then make Hset=Hcur
+Hmax*PH1；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
6. according to the method for claim 1, it is characterised in that：
As R ＜ Rmid-ΔRWhen, increase ore mill inlet amount, including：
As R ＜ Rmid-ΔRWhen, by HsetIt is arranged to Hmax；
As R ＞ Rmid+ΔRWhen, ore mill inlet amount is reduced, including：
As R ＞ Rmid+ΔRWhen, make Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederHSFor preset percentage.
7. according to the method for claim 1, it is characterised in that methods described also includes, in the following way to RmaxCarry out
Adjustment：
Every the average of R in the second preset duration, calculating second preset duration
IfThen heighten Rmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
8. according to the method for claim 7, it is characterised in that by equation below to RmaxIt is adjusted：
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9. a kind of ore mill control device, it is characterised in that described device includes：
Power acquisition module, for obtaining ore mill current power R；
Power comparison module, for determining current power R and Rmid-ΔRAnd Rmid+ΔRMagnitude relationship, wherein RmidFor ore mill
The median of power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore grinding acc power
Max-thresholds；
Coarse adjustment module, for as R ＜ Rmid-ΔRWhen, increase ore mill inlet amount, as R ＞ Rmid+ΔRWhen, reduce ore mill charging
Amount；
Module is finely tuned, for working as Rmid-ΔR=＜ R and R ＜=Rmid+ΔRWhen, according to the variation tendency of ore grinding acc power and preset
Strategy, finely tune ore mill inlet amount；
Wherein, the variation tendency is that the ore mill changed power trend in duration is specified using current time as the first of terminal.
10. device according to claim 9, it is characterised in that the fine setting module includes：
First fine setting submodule, if for being specified described first in duration, ore grinding acc power keeps ascendant trend, then basis
Power up speeds accordingly reduce ore mill inlet amount；
Second fine setting submodule, if for being specified described first in duration, ore grinding acc power keeps downward trend, then basis
Power drop speed accordingly increases ore mill inlet amount；
3rd fine setting submodule, if for being specified described first in duration, ore grinding acc power has liter to have drop, then not to ore grinding
Machine inlet amount is adjusted.
11. device according to claim 10, it is characterised in that the fine setting module is in the following way to keeping rising
Trend, keep downward trend, there is liter to there is drop to be judged：
CalculateWithWherein,For ore grinding acc power average in current period,For ore grinding acc power average in a upper cycle,For ore grinding acc power average in phase week before last, current period is from current
When m- T to current time period, a upper cycle be from current time -2T to current time-T period, phase week before last
To be the length in each cycle from current time -3T to current time -2T period, T, described first specifies duration to include institute
Stated current period, a upper cycle and phase week before last；
If RΔ-last＞ 0 and RΔ-now＞ 0, then judge that ore grinding acc power keeps ascendant trend；
If RΔ-last＜ 0 and RΔ-now＜ 0, then judge that ore grinding acc power keeps downward trend；
If RΔ-last＞ 0 and RΔ-now＜ 0, or, RΔ-last＜ 0 and RΔ-now＞ 0, then judge that ore grinding acc power has liter to have drop.
12. device according to claim 11, it is characterised in that ore mill charging is accordingly reduced according to power up speeds
Amount, including：
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR3When, then make Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR2And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR3When, then make Hset=Hcur+Hmax*
(-PH2)；
As (RΔ-last+RΔ-now)/2 ＞=Rmax*PR1And (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR2When, then make Hset=Hcur+Hmax*
(-PH1)；
As (RΔ-last+RΔ-nowThe ＜ R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
13. device according to claim 11, it is characterised in that ore mill charging is accordingly increased according to power drop speed
Amount, including：
As (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR3) when, then make Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR2) when, then make Hset=Hcur
+Hmax*PH2；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 ＜=Rmax*(-PR1) when, then make Hset=Hcur
+Hmax*PH1；
As (RΔ-last+RΔ-nowThe ＞ R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
14. device according to claim 9, it is characterised in that the coarse adjustment module is used for：
As R ＜ Rmid-ΔRWhen, by HsetIt is arranged to Hmax；
As R ＞ Rmid+ΔRWhen, make Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetOre deposit frequency setting value, H are given for vibrofeedercurGive ore deposit frequency current measured value for vibrofeeder, Hmax
Ore deposit frequency maxima, P are given for vibrofeederHSFor preset percentage.
15. device according to claim 9, it is characterised in that described device also includes：
Self-learning module, in the following way to RmaxIt is adjusted：
Every the average of R in the second preset duration, calculating second preset duration
IfThen heighten Rmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
16. device according to claim 15, it is characterised in that by equation below to RmaxIt is adjusted：
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4
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847916A (en) * | 2018-12-26 | 2019-06-07 | 厦门邑通软件科技有限公司 | A kind of energy conservation optimizing method of cement raw material vertical mill system |
| CN112547293A (en) * | 2020-11-04 | 2021-03-26 | 宜春钽铌矿有限公司 | Method for intelligently controlling load of rod mill |
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| JPH0731898A (en) * | 1993-07-26 | 1995-02-03 | Mitsubishi Heavy Ind Ltd | Coal pulverizer fitted with rotary type classifier and operating method therefor |
| CN101229525A (en) * | 2008-02-27 | 2008-07-30 | 东南大学 | Raymond mill crashing auto control method and equipment thereof |
| CN101623667A (en) * | 2009-07-31 | 2010-01-13 | 浙江中控技术股份有限公司 | Automatic control method and system for mill load |
| CN202752089U (en) * | 2012-08-29 | 2013-02-27 | 贵州锦丰矿业有限公司 | Device capable of achieving control of grinding machine through noise meter |
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| CN112547293A (en) * | 2020-11-04 | 2021-03-26 | 宜春钽铌矿有限公司 | Method for intelligently controlling load of rod mill |
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| CN107344138B (en) | 2019-03-22 |
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