CN103769291B

CN103769291B - The method and apparatus that a kind of ore mill feed ore concentration controls

Info

Publication number: CN103769291B
Application number: CN201310674462.7A
Authority: CN
Inventors: 李宗平; 孙英; 徐士申; 李丹; 饶慧琦
Original assignee: Zhongye Changtian International Engineering Co Ltd; Yuxi Dahongshan Mining Co Ltd
Current assignee: Zhongye Changtian International Engineering Co Ltd; Yuxi Dahongshan Mining Co Ltd
Priority date: 2013-12-11
Filing date: 2013-12-11
Publication date: 2015-08-05
Anticipated expiration: 2033-12-11
Also published as: CN103769291A

Abstract

This application discloses the method and apparatus that a kind of ore mill feed ore concentration controls.The method comprises: obtain mill sound-like state value, main shaft oil pressure and mill power that ore mill is current, and calculates mill load parameter according to mill sound-like state value and mill power; Oil pressure number range belonging to main shaft oil pressure and the load value scope belonging to mill load parameter, determine the oil pressure state that ore mill is current and load parameter state; Be in high oil pressure state and high load capacity parameter state in response to ore mill is current simultaneously, reduce the feed ore concentration of ore mill; Be in low oil pressure state and underload parameter state in response to ore mill is current simultaneously, increase the feed ore concentration of ore mill.Can be realized by the technical scheme of the application, feed ore concentration is reduced when ore mill load condition is higher, to reduce the load of ore mill and to make mineral aggregate pulverize more fully, improve feed ore concentration when ore mill load condition is on the low side, thus improve the efficiency of grinding process and reduce the energy consumption of unit ton concentrate.

Description

The method and apparatus that a kind of ore mill feed ore concentration controls

Technical field

The application relates to Process Control of Mineral Dressing field, particularly relates to the method and apparatus that a kind of ore mill feed ore concentration controls.

Background technology

In the production process of ore smelting, owing to digging up mine, the raw ore ore obtained does not reach smelting requirements, needs first to carry out ore dressing to raw ore ore, thus obtains the concentrate meeting smelting requirements, be used further to smelting process.The links such as ore-dressing practice mainly comprises crushing and screening, grind grading to raw ore ore, sorts, essence mine dehydration.Wherein, grinding process is by the ore grinding of fragmentation to suitable granularity, and the mineral pulverized are supplied to the process of sorting.In grinding process, because ore is pulverized, effective mineralogical composition can dissociate out from gangue, and different effective mineralogical composition is dissociated mutually.Grinding operation is to provide the critical process sorting raw material, to the control situation of grinding process, whether the granularity directly having influence on ore milling product can be reached suitable granularity, and then impact sorts the quality of process and dressing product.

See Fig. 1, show the course of work of ore mill in a kind of grinding process.Mineral aggregate and water are mixed to ore mill by input respectively, after the pulverizing of ore mill, export pump pond to again.Wherein, the live load of ore mill affects quality and the production efficiency of product in grinding operation process: when ore mill load is too high, and ore mill is pulverized mineral aggregate will be abundant not, and the granularity of ore milling product is excessive, thus makes product quality not reach requirement; When ore mill load is too low, the speed of ore mill process mineral aggregate is excessively slow, thus the production efficiency of ore milling product is reduced.Visible, be the key that whole grinding process controls to the spatial load forecasting of ore mill.

In grinding process, the feed ore concentration (namely throwing in the mineral aggregate quantity to ore mill and the ratio throwing in mineral aggregate and water number amount summation) of ore mill is one of principal element affecting ore mill load.Usually, feed ore concentration improves, and ore mill load increases, and the speed of production of product is accelerated, and feed ore concentration reduces, and ore mill load reduces, and the speed of production of product slows down.But in the prior art, the control procedure of ore mill load is not but regulated to the control of feed ore concentration, but adopt changeless feed ore concentration in whole grinding process, this fixing feed ore concentration and ore mill normal duty state adapt.Because the feed ore concentration of ore mill correspondingly can not change according to the load height of ore mill, when the load condition of ore mill does not belong to normal, the feed ore concentration of ore mill just can not adapt to the load condition of ore mill; When the load condition of ore mill is higher, the lump ore of grinding machine inside and the throwing of steel ball are pounded and are ground abundant not, and the grinding efficiency of grinding machine does not reach requirement, and when the load condition of ore mill is on the low side, the processing speed of raw ore will decline, and the ore handling capacity of grinding machine reduces.

Summary of the invention

Technical problems to be solved in this application are, there is provided the method and apparatus that a kind of ore mill feed ore concentration controls, when the ore mill load condition caused to solve the changeless feed ore concentration of employing conventionally departs from normal, grinding efficiency does not reach the technical problem of requirement and ore handling capacity reduction.

For solving the problems of the technologies described above, the embodiment of the present application provides a kind of method that ore mill feed ore concentration controls, and the method comprises:

Obtain mill sound-like state value, main shaft oil pressure and mill power that ore mill is current, and calculate mill load parameter according to described mill sound-like state value and mill power;

Oil pressure number range belonging to described main shaft oil pressure and the load value scope belonging to described mill load parameter, determine the oil pressure state that described ore mill is current and load parameter state, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current is in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, described ore mill is current belongs to underload parameter state, if described mill load parameter is more than or equal to the second load parameter threshold value, described ore mill is current belongs to high load capacity parameter state, wherein, described second oil pressure threshold value is greater than described first oil pressure threshold value, described second load parameter threshold value is greater than described first load parameter threshold value,

Be in high oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, reduce the feed ore concentration of described ore mill;

Be in low oil pressure state and underload parameter state in response to described ore mill is current simultaneously, increase the feed ore concentration of described ore mill.

Optionally, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and be greater than the 3rd load parameter threshold value, described ore mill is current is in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and be more than or equal to the second load parameter threshold value, described ore mill is current is in the first high load capacity parameter state; Wherein, described 3rd load parameter threshold value is less than described first load parameter threshold value, and described 4th load parameter threshold value is greater than described second load parameter threshold value;

Described method also comprises:

Be in reasonable oil pressure state and the first high load capacity parameter state in response to described ore mill is current simultaneously, reduce the feed ore concentration of described ore mill;

Be in reasonable oil pressure state and the first underload parameter state in response to described ore mill is current simultaneously, increase the feed ore concentration of described ore mill.

Optionally, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and be greater than the first load parameter threshold value, described ore mill is current is in Reasonable load parameter state;

Described method also comprises:

Be in higher load condition in response to described ore mill is current, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: described ore mill is current is in high oil pressure state and high load capacity parameter state simultaneously, described ore mill is current is in high oil pressure state and Reasonable load parameter state simultaneously, and described ore mill is current is in reasonable oil pressure state and high load capacity parameter state simultaneously;

Be in low load condition in response to described ore mill is current, increase the mine-supplying quantity of described ore mill; Described low load condition is: described ore mill is current is in low oil pressure state and underload parameter state simultaneously, described ore mill is current is in low oil pressure state and Reasonable load parameter state simultaneously, and described ore mill is current is in reasonable oil pressure state and underload parameter state simultaneously.

Optionally, also comprise:

Be in abnormal load state in response to ore mill, the mine-supplying quantity maintaining described ore mill is constant; Described abnormal load state comprises: described ore mill is current is in high oil pressure state and underload parameter state simultaneously, and described ore mill is current is in low oil pressure state and high load capacity parameter state simultaneously.

Optionally, described according to described mill sound-like state value and mill power calculating mill load parameter, comprising:

Calculate described mill sound-like state value and account for the mill signal to noise ratio example of maximum mill sound-like state value and described mill power accounts for the power proportions of maximum mill power;

Be weighted average result according to described mill signal to noise ratio example and described power proportions, obtain described mill load parameter.

Optionally, described basis is weighted average result to described mill signal to noise ratio example and described power proportions, obtains described mill load parameter, comprising:

According to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions are weighted on average, obtain result of weighted average;

With the first correction factor preset, described result of weighted average is revised, obtain described mill load parameter.

Optionally, the mill sound-like state value that described acquisition ore mill is current, comprising:

By obtaining the signal of telecommunication of described mill sound detect to the mill sound detect of described ore mill;

Account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determine the mill sound-like state value that described ore mill is current;

Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is that described signal higher limit and signal roll off the production line the difference of value, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect.

Optionally, the described signal proportion accounting for described signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determine specifically to comprise the mill sound-like state value that described ore mill is current:

The difference calculated between described signal higher limit and the current value of the described signal of telecommunication accounts for the signal proportion of described signal spacing width;

With the second corrected parameter preset, described signal proportion is revised, obtain the mill sound-like state value that described ore mill is current.

In addition, present invention also provides the device that a kind of ore mill feed ore concentration controls, comprising:

Acquisition module, for obtaining ore mill current mill sound-like state value, main shaft oil pressure and mill power;

Parameter calculating module, for calculating mill load parameter according to described mill sound-like state value and mill power;

State determining module, for the oil pressure number range belonging to described main shaft oil pressure and the load value scope belonging to described mill load parameter, determines the oil pressure state that described ore mill is current and load parameter state, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current is in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, described ore mill is current belongs to underload parameter state, if described mill load parameter is more than or equal to the second load parameter threshold value, described ore mill is current belongs to high load capacity parameter state, wherein, described second oil pressure threshold value is greater than described first oil pressure threshold value, described second load parameter threshold value is greater than described first load parameter threshold value,

First concentration reduces module, for being in high oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, reduces the feed ore concentration of described ore mill;

First concentration increases module, for being in low oil pressure state and underload parameter state in response to described ore mill is current simultaneously, increases the feed ore concentration of described ore mill.

Described device also comprises:

Second concentration reduces module, for being in reasonable oil pressure state and the first high load capacity parameter state in response to described ore mill is current simultaneously, reduces the feed ore concentration of described ore mill;

Second concentration increases module, for being in reasonable oil pressure state and the first underload parameter state in response to described ore mill is current simultaneously, increases the feed ore concentration of described ore mill.

Described device also comprises:

Subtracting ore deposit module, for being in higher load condition in response to described ore mill is current, reducing the mine-supplying quantity of described ore mill; Described higher load condition is: described ore mill is current is in high oil pressure state and high load capacity parameter state simultaneously, described ore mill is current is in high oil pressure state and Reasonable load parameter state simultaneously, and described ore mill is current is in reasonable oil pressure state and high load capacity parameter state simultaneously;

Increasing ore deposit module, for being in low load condition in response to described ore mill is current, increasing the mine-supplying quantity of described ore mill; Described low load condition is: described ore mill is current is in low oil pressure state and underload parameter state simultaneously, described ore mill is current is in low oil pressure state and Reasonable load parameter state simultaneously, and described ore mill is current is in reasonable oil pressure state and underload parameter state simultaneously.

Optionally, also comprise:

Maintain module, for being in abnormal load state in response to ore mill, the mine-supplying quantity maintaining described ore mill is constant; Described abnormal load state comprises: described ore mill is current is in high oil pressure state and underload parameter state simultaneously, and described ore mill is current is in low oil pressure state and high load capacity parameter state simultaneously.

Optionally, described parameter calculating module comprises:

Accounting calculating sub module, accounts for the mill signal to noise ratio example of maximum mill sound-like state value and described mill power accounts for the power proportions of maximum mill power for calculating described mill sound-like state value;

Parameter determination submodule, for being weighted average result according to described mill signal to noise ratio example and described power proportions, obtains described mill load parameter.

Optionally, described parameter determination submodule comprises:

Weighted average submodule, is weighted on average described mill signal to noise ratio example and described power proportions for the coefficient of reliability according to ore mill detection signal, obtains result of weighted average;

First revises submodule, for revising described result of weighted average with the first correction factor preset, obtains described mill load parameter.

Optionally, described acquisition module comprises:

Signal detection submodule, for the signal of telecommunication by obtaining described mill sound detect to the mill sound detect of described ore mill;

Mill sound determination submodule, for accounting for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound-like state value that described ore mill is current; Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is that described signal higher limit and signal roll off the production line the difference of value, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect;

Oil pressure obtains submodule, for obtaining the current main shaft oil pressure of ore mill;

Power obtains submodule, for obtaining the current mill power of ore mill.

Optionally, grind sound determination submodule and comprise:

Signal proportion submodule, accounts for the signal proportion of described signal spacing width for the difference calculated between described signal higher limit and the current value of the described signal of telecommunication;

Second revises submodule, for revising described signal proportion with the second corrected parameter preset, obtains the mill sound-like state value that described ore mill is current.

Compared with prior art, the application has the following advantages:

The technical scheme of the embodiment of the present application, according to the main shaft oil pressure of ore mill, mill power and mill sound-like state value three comprehensively determine the load condition of ore mill, wherein, main shaft oil pressure is for determining the current oil pressure state be in of ore mill, the mill load parameter of mill power and the matching of mill sound-like state value is for determining the current load parameter state be in of ore mill, ore mill is current be in high oil pressure state and high load capacity parameter state simultaneously time reduce feed ore concentration, ore mill is current be in low oil pressure state and underload parameter state simultaneously time increase feed ore concentration.By the technical scheme of the embodiment of the present application, can realize, feed ore concentration is reduced when ore mill load condition is higher, to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process more abundant, thus make the grinding efficiency of grinding machine reach requirement, increase feed ore concentration when ore mill load condition is on the low side, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thus improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the course of work schematic diagram of ore mill in grinding process;

Fig. 2 is the basic flow sheet of the embodiment of the method 1 that in the application, ore mill feed ore concentration controls;

Fig. 3 is the flow chart obtaining mill sound-like state value one embodiment in the embodiment of the present application;

Fig. 4 is the flow chart calculating mill sound load parameter one embodiment in the embodiment of the present application;

Fig. 5 is the basic flow sheet of the embodiment of the method 2 that in the application, ore mill feed ore concentration controls;

Fig. 6 is the basic flow sheet of the embodiment of the method 3 that in the application, ore mill feed ore concentration controls;

Fig. 7 is the structure chart of the device embodiment 1 that in the application, ore mill feed ore concentration controls;

Fig. 8 is the structure chart of the device embodiment 2 that in the application, ore mill feed ore concentration controls;

Fig. 9 is the structure chart of the device embodiment 3 that in the application, ore mill feed ore concentration controls;

Figure 10 is the structure chart of the device embodiment 4 that in the application, ore mill feed ore concentration controls;

Figure 11 is the structure chart of a kind of parameter calculating module 702 embodiment in the embodiment of the present application;

Figure 12 is the structure chart of a kind of parameter determination submodule 1102 embodiment in the embodiment of the present application;

Figure 13 is the structure chart of a kind of acquisition module 701 embodiment in the embodiment of the present application;

Figure 14 is a kind of structure chart grinding sound determination submodule 1302 embodiment in the embodiment of the present application.

Detailed description of the invention

The application's scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.

Inventor finds through research, for a long time, ore mill spatial load forecasting of the prior art, what adopt is all that mine-supplying quantity (namely throwing in the mineral aggregate quantity to the ore mill) this point being ore mill based on the major influence factors of ore mill load is considered, by realizing the regulable control of ore mill mine-supplying quantity.But uncared-for, in fact except mine-supplying quantity, the feed ore concentration of ore mill is also one of major influence factors of ore mill load, by also realizing carrying out spatial load forecasting to ore mill to the regulable control of feed ore concentration.

Based on above-mentioned analysis and research, the basic thought of the application is: the main shaft oil pressure current according to ore mill, mill power and mill sound-like state value three comprehensively determine the load condition of ore mill, wherein, main shaft oil pressure is for determining the current oil pressure state be in of ore mill, the mill load parameter of mill power and the matching of mill sound-like state value is for determining the current load parameter state be in of ore mill, ore mill is current be in high oil pressure state and high power state simultaneously time reduce feed ore concentration, ore mill is current be in low oil pressure state and low power state simultaneously time improve feed ore concentration.So just can realize, feed ore concentration is reduced when ore mill load condition is higher, to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process more abundant, thus make the grinding efficiency of grinding machine reach requirement, feed ore concentration is increased when ore mill load condition is on the low side, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thus improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

It should be noted that, noun " ore mill " involved herein, expression be the grinding attachment used in the grinding process of ore-dressing technique, also can be described as " grinding machine ".Wherein, the technical scheme of the embodiment of the present application is applicable to multiple different grinding attachment, such as ball mill or semi-autogenous mill.

After the basic thought describing the application, below in conjunction with accompanying drawing, described in detail the specific implementation of the method and apparatus that the application's ore mill feed ore concentration controls by embodiment.

See Fig. 2, show the basic flow sheet of the embodiment of the method 2 that ore mill feed ore concentration controls in the application.In the present embodiment, described method such as can comprise the following steps:

Mill sound-like state value, main shaft oil pressure and mill power that S201, acquisition ore mill are current, and calculate mill load parameter according to described mill sound-like state value and mill power.

In the present embodiment, the mill sound that mill sound-like state value is detected by ore mill calculates and draws.Such as particularly, a kind of obtain manner grinding sound-like state value, can as shown in Figure 3, have been come by following steps:

S301, by obtaining the signal of telecommunication of described mill sound detect to the mill sound detect of described ore mill.

S302, account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determine the mill sound-like state value that described ore mill is current.

Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is that described signal higher limit and signal roll off the production line the difference of value, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect.Such as, usually, the current value of the mill sound signal of telecommunication detected is all in the scope of 4 ~ 20 milliamperes, the current value of the maximum signal of telecommunication is 20 milliamperes, and the current value of the minimum signal of telecommunication is 4 milliamperes, then signal higher limit is 20, signal lower limit is 4, and now signal spacing width is 16.

When determining mill sound-like state value according to aforementioned proportion, a kind of mode be can directly using aforementioned proportion as grinding sound-like state value.But the mill sound of ore mill is interfered sometimes, the quiescent current value that detection mill sound obtains has deviation, even can exceed signal higher limit or not reach signal lower limit.In order to the impact making the mill sound-like state value determined avoid interference, another kind determines that the mode of grinding sound-like state value can be the signal proportion that the difference first calculated between described signal higher limit and the current value of the described signal of telecommunication accounts for described signal spacing width, with the second corrected parameter preset, described signal proportion is revised again, obtain the mill sound-like state value that described ore mill is current.Like this, utilize the second corrected parameter to revise aforementioned proportion, thus the impact of interference can be alleviated.Particularly, such as following formula can be adopted calculate mill sound-like state value:

YI = 100 \times \frac{(X_{\max} - X)}{X_{\max - \min}} + K D_{2};

Wherein, YI is mill sound-like state value, and X detects the current value grinding the signal of telecommunication that sound obtains, X _maxfor signal higher limit, X _max-minfor signal spacing width, KD ₂be the second corrected parameter, wherein, KD ₂it can be the constant pre-set.

Then Fig. 2 is returned.

In the present embodiment, mill load parameter be according to mill sound-like state value and the common matching of mill power calculate one for judging the parameter of mill load state.Such as, a kind of account form of mill load parameter, can as shown in Figure 4, be come by following steps:

S401, calculate described mill sound-like state value and account for the mill signal to noise ratio example of maximum mill sound-like state value and described mill power accounts for the power proportions of maximum mill power;

S402, basis are weighted average result to described mill signal to noise ratio example and described power proportions, obtain described mill load parameter.

Wherein, if mill sound-like state value calculates in the mode shown in aforementioned Fig. 3, then in fact grind a sound-like state value very ratio, maximum mill sound-like state value is 1.Also namely, described mill sound-like state value accounts for the mill signal to noise ratio example of maximum mill sound-like state value, is in fact described mill sound-like state value.Therefore, in present embodiment, mill sound-like state value also directly can be adopted as mill signal to noise ratio example to perform step S402.

For the mode according to average weighted result determination mill load parameter, a kind of mode can be that mill signal to noise ratio example is done weighted average with power proportions with identical weight.But the mill sound of ore mill is interfered sometimes, the quiescent current value that detection mill sound obtains has deviation, the reliability standard of mill sound-like state value is different, so, another kind of can mode be adopt the weight of coefficient of reliability to mill signal to noise ratio example and power proportions preset to distinguish, and then is weighted on average mill signal to noise ratio example and power proportions with different weights.In addition, even if having employed coefficient of reliability, still may there is metrical error in grinding machine state value and mill sound power, and in order to eliminate this error, another mode can be first be weighted on average according to the coefficient of reliability of ore mill detection signal to described mill signal to noise ratio example and described power proportions, obtain result of weighted average, then with the first correction factor preset, described result of weighted average is revised, obtain described mill load parameter.Like this, utilize the first corrected parameter to revise aforementioned proportion, thus the impact of error can be alleviated.Particularly, following formula such as can be adopted to calculate mill load parameter:

FH = \frac{JI}{{JI}_{\max}} \times a + TI \times (1 - a) + K D_{1};

Wherein, FH is mill load parameter, and JI is mill power, JI _maxfor maximum mill power, YI is mill sound-like state value, and a is default coefficient of reliability, and KD1 is the first corrected parameter, and wherein, the preferred span of a is 0.4 ~ 0.6, KD1 can be the constant pre-set.

Then Fig. 2 is returned.After S201 is finished, then perform S202.

S202, the oil pressure number range belonging to described main shaft oil pressure and the load value scope belonging to described mill load parameter, determine the oil pressure state that described ore mill is current and load parameter state.

Particularly, the determination mode of oil pressure state and load parameter state can be such as: if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, and described ore mill is current is in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, described ore mill is current belongs to underload parameter state, if described mill load parameter is more than or equal to the second load parameter threshold value, described ore mill is current belongs to high load capacity parameter state, wherein, described second oil pressure threshold value is greater than described first oil pressure threshold value, described second load parameter threshold value is greater than described first load parameter threshold value.

It should be noted that, the first oil pressure threshold value and the second oil pressure threshold value can set according to the maximum oil pressure of ore mill, and such as, the first oil pressure threshold value can be the 85%, second oil pressure threshold value of maximum oil pressure can be 95% of maximum oil pressure; Similarly, first load parameter threshold value and the second load parameter threshold value can be set according to the maximum mill load parameter of ore mill, such as, the first load parameter threshold value can be the 80%, second load parameter threshold value of maximum mill load parameter can be 90% of maximum mill load parameter.

S203, be in high oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, reduce the feed ore concentration of described ore mill.

Wherein, the mode of reduction can be current feed ore concentration is deducted a fixing regulated value again to obtain current feed ore concentration.

S204, be in low oil pressure state and underload parameter state in response to described ore mill is current simultaneously, increase the feed ore concentration of described ore mill.

Wherein, the mode of increase can be current feed ore concentration is added a fixing regulated value obtains current feed ore concentration again.

It should be noted that, determine that the mode of load condition is different from prior art by the mill sound (noise that ore mill produces) of ore mill, what adopt in the present embodiment be the main shaft oil pressure of ore mill, load condition that mill power and mill sound-like state value three comprehensively determine ore mill.This on the one hand, mainly because prior art is just in order to control mine-supplying quantity, and the corresponding relation between feed ore concentration from load condition is different with the corresponding relation between mine-supplying quantity and load condition, almost do not have correlation between ore mill feed ore concentration and mill sound, namely during feed ore concentration change, the mill sound of ore mill has almost no change; On the other hand, be fluctuate because mill sound can be subject to the interference of outer work condition, the load condition of ore mill can not be reflected exactly.

Be understandable that, sensitiveer in order to make feed ore concentration control, currently neither can also be in high oil pressure state and high load capacity parameter state at ore mill simultaneously, also different time when being in low oil pressure state and underload parameter state, further identification is done to oil pressure state and load parameter state, thus determines whether to need to regulate feed ore concentration.Such as, high oil pressure state is comprised except aforementioned, low oil pressure state, outside the determination mode of high load capacity parameter state and underload parameter, the determination mode of oil pressure state and load parameter state can also comprise: if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and be greater than the 3rd load parameter threshold value, described ore mill is current is in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and be more than or equal to the second load parameter threshold value, described ore mill is current is in the first high load capacity parameter state, wherein, described 3rd load parameter threshold value is less than described first load parameter threshold value, and described 4th load parameter threshold value is greater than described second load parameter threshold value.Now, after S202, can also comprise: be in reasonable oil pressure state and the first high load capacity parameter state in response to described ore mill is current simultaneously, reduce the feed ore concentration of described ore mill; Be in reasonable oil pressure state and the first underload parameter state in response to described ore mill is current simultaneously, increase the feed ore concentration of described ore mill.Wherein, identical with the second load parameter threshold value with the first load parameter threshold value is, 3rd load parameter threshold value and the 4th load parameter threshold value also can be set according to the maximum mill load parameter of ore mill, such as, suppose that the first load parameter threshold value is 80% of maximum mill load parameter and the second load parameter threshold value is 90% of maximum mill load parameter, then the 3rd load parameter threshold value can be the 70%, four load parameter threshold value of maximum mill load parameter can be 95% of maximum mill load parameter.

In the present embodiment, in order to avoid excessively regulating feed ore concentration, can also after S203 or S204 be complete, the feed ore concentration exceeding the upper limit or do not reach lower limit is adjusted.Particularly, after S202 is complete, or S203 complete after, can also the feed ore concentration of more described ore mill and upper limit of concentration value, concentration limit value corresponding relation; Be greater than described upper limit of concentration value in response to described feed ore concentration, described feed ore concentration is adjusted to described upper limit of concentration value; Be less than described concentration limit value in response to described feed ore concentration, described feed ore concentration is adjusted to described concentration limit value.Wherein, described upper limit of concentration value is greater than described concentration limit value.This upper limit of concentration value and concentration limit value can be arranged according to concrete operating mode, and such as, upper limit of concentration value can be set as 85%, and concentration limit value can be set as 75%.

By the technical scheme of the present embodiment, feed ore concentration is reduced when ore mill load condition is higher, to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process more abundant, thus make the grinding efficiency of grinding machine reach requirement, feed ore concentration is increased when ore mill load condition is on the low side, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thus improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

Because the influence factor of ore mill load condition not only comprises feed ore concentration, also comprise mine-supplying quantity, so, when ore mill load condition is controlled, can by carrying out regulable control to realize to feed ore concentration and mine-supplying quantity simultaneously simultaneously.

See Fig. 5, show the basic flow sheet of the embodiment of the method 2 that ore mill feed ore concentration controls in the application.In the present embodiment, described method such as can comprise the following steps:

Mill sound-like state value, main shaft oil pressure and mill power that S501, acquisition ore mill are current, and calculate mill load parameter according to described mill sound-like state value and mill power.

S502, the oil pressure number range belonging to described main shaft oil pressure and the load value scope belonging to described mill load parameter, determine the oil pressure state that described ore mill is current and load parameter state.

Particularly, the determination mode of oil pressure state and load parameter state can be such as: if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, and described ore mill is current is in low oil pressure state, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current is in high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, described ore mill is current is in underload parameter state, if described mill load parameter is less than the second load parameter threshold value and be greater than the first load parameter threshold value, described ore mill is current is in Reasonable load parameter state, if described mill load parameter is more than or equal to the second load parameter threshold value, described ore mill is current is in high load capacity parameter state, wherein, described second oil pressure threshold value is greater than described first oil pressure threshold value, described second load parameter threshold value is greater than described first load parameter threshold value.

Be understandable that, after S502 is complete, need to determine that entering which step following continues to perform according to the current oil pressure state of ore mill and load parameter state.Wherein, determine that the step entered can be one during each control, also can be two, such as, can determining to enter S504 when determining to enter S503 simultaneously, can determine to enter S506 when determining to enter S505 simultaneously.

S503, be in high oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, reduce the feed ore concentration of described ore mill.

S504, be in higher load condition in response to described ore mill is current, reduce the mine-supplying quantity of described ore mill.

Wherein, described higher load condition comprises following three kinds of situations:

(1) described ore mill is current is in high oil pressure state and high load capacity parameter state simultaneously;

(2) described ore mill is current is in high oil pressure state and Reasonable load parameter state simultaneously;

(3) described ore mill is current is in reasonable oil pressure state and high load capacity parameter state simultaneously.

Be understandable that, described higher load condition comprises above three kinds of situations, refer to that above-mentioned three kinds of any one situations of situation can be referred to as higher load condition, as long as namely the main shaft oil pressure of ore mill and mill load parameter meet any one situation above-mentioned, just represent that ore mill is current and be in higher load condition.

It should be noted that, when each regulable control reduced mine-supplying quantity, a kind of possible control mode can be reduce mine-supplying quantity with fixed value, and before and after namely regulating, the difference (regulated quantity) of mine-supplying quantity is a fixed value.But in order to carry out mine-supplying quantity control more subtly, another kind of possible control mode can be that before and after namely regulating, the difference of mine-supplying quantity is comprehensively determined in conjunction with ore mill mill sound, main shaft oil pressure and mill power in conjunction with the current concrete oil pressure state of ore mill and load parameter state to determine the regulated quantity of mine-supplying quantity; Particularly, S504 such as can comprise: identify the current residing oil pressure state of described ore mill and load parameter state; Be in high oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, the mine-supplying quantity of described ore mill is reduced the first regulated quantity; Be in high oil pressure state and Reasonable load parameter state in response to described ore mill is current simultaneously, the mine-supplying quantity of described ore mill is reduced the second regulated quantity; Be in reasonable oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, the mine-supplying quantity of described ore mill is reduced the second regulated quantity.Wherein, described second regulated quantity is less than described first regulated quantity.Be understandable that, be in high oil pressure state and high load capacity parameter state when ore mill is current simultaneously, also namely the oil pressure of ore mill and mill load parameter all higher time, illustrate that now mineral aggregate is too much in ore mill, so it is larger relative to the second regulated quantity adopted in other situations now to reduce the first regulated quantity of adopting of mine-supplying quantity, to make mine-supplying quantity to reduce rapidly, ore mill inner stuffing reduces rapidly.

S505, be in low oil pressure state and underload parameter state in response to described ore mill is current simultaneously, increase the feed ore concentration of described ore mill.

S506, be in low load condition in response to described ore mill is current, increase the mine-supplying quantity of described ore mill.

Wherein, described low load condition comprises following three kinds of situations:

(1) described ore mill is current is in low oil pressure state and underload parameter state simultaneously;

(2) described ore mill is current is in low oil pressure state and Reasonable load parameter state simultaneously;

(3) described ore mill is current is in reasonable oil pressure state and underload parameter state simultaneously.

Be understandable that, described low load condition comprises above three kinds of situations, refer to that above-mentioned three kinds of any one situations of situation can be referred to as low load condition, as long as namely the main shaft oil pressure of ore mill and mill load parameter meet any one situation above-mentioned, just represent that ore mill is current and be in low load condition.

It should be noted that, when each regulable control increased mine-supplying quantity, a kind of possible control mode can be increase mine-supplying quantity with fixed value, and before and after namely regulating, the difference (regulated quantity) of mine-supplying quantity is a fixed value.But in order to carry out mine-supplying quantity control more subtly, another kind of possible control mode can be that before and after namely regulating, the difference of mine-supplying quantity is comprehensively determined in conjunction with ore mill mill sound, main shaft oil pressure and mill power in conjunction with the current concrete oil pressure state of ore mill and load parameter state to determine the regulated quantity of mine-supplying quantity; Particularly, S506 such as can comprise: identify the current residing oil pressure state of described ore mill and load parameter state; Be in low oil pressure state and underload parameter state in response to described ore mill is current simultaneously, the mine-supplying quantity of described ore mill is increased the 3rd regulated quantity; Be in low oil pressure state and Reasonable load parameter state in response to described ore mill is current simultaneously, the mine-supplying quantity of described ore mill is increased the 4th regulated quantity; Be in reasonable oil pressure state and underload parameter state in response to described ore mill is current simultaneously, the mine-supplying quantity of described ore mill is increased the 4th regulated quantity.Wherein, described 4th regulated quantity is less than described 3rd regulated quantity.Be understandable that, be in low oil pressure state and underload parameter state when ore mill is current simultaneously, also namely the oil pressure of ore mill and mill load parameter all higher time, illustrate that now mineral aggregate is very few in ore mill, so it is larger relative to the 4th regulated quantity adopted in other situations now to increase the 3rd regulated quantity that adopts of mine-supplying quantity, to make mine-supplying quantity to increase rapidly, ore mill inner stuffing increases sharply.In addition, will also be appreciated that the 3rd regulated quantity can be adopt same numerical value with aforementioned first regulated quantity, similarly, the 4th regulated quantity and aforementioned second regulated quantity also can be adopt same numerical value.Certainly, above four regulated quantitys also can adopt different numerical value, such as, specifically can set according to actual condition.

In the present embodiment, when regulating mine-supplying quantity, determine that the mode of ore mill load condition is equally also main shaft oil pressure according to ore mill, mill power and mill sound three comprehensively determine, and not picture is the load condition only determining ore mill according to mill sound in the prior art.The noise of ore mill in actual production complicated and changeable can be avoided like this to be subject to many-sided interference and the load condition that causes judges inaccurate, thus it is more accurate that the mine-supplying quantity of ore mill is controlled.

In the actual moving process of ore mill, ore mill is sometimes neither in higher load condition and is not also in low load condition, but be in abnormal conditions, now, can also determine how the mine-supplying quantity of ore mill is controlled, such as, particularly, on the process base shown in Fig. 5 further combined with the mill sound situation of ore mill in the present embodiment, the present embodiment can also comprise further after S502: be in abnormal load state in response to ore mill, and the mine-supplying quantity maintaining described ore mill is constant.Like this, in abnormal cases, ore mill keeps mine-supplying quantity constant, waits for that the oil pressure state of ore mill and load parameter state change further, enters S504 or S506 again regulate until meet higher load condition or low load condition mine-supplying quantity.

Wherein, described abnormal load state comprises following two kinds of situations:

(1) described ore mill is current is in high oil pressure state and underload parameter state simultaneously;

(2) described ore mill is current is in low oil pressure state and high load capacity parameter state simultaneously.

Be understandable that, described abnormal load state comprises above two kinds of situations, refer to that any one situation of above-mentioned two situations can be referred to as abnormal load state, as long as namely the main shaft oil pressure of ore mill and mill load parameter meet any one situation above-mentioned, just represent that ore mill is current and be in abnormal load state.

In addition, in order to avoid the excessive adjustment of mine-supplying quantity, after S504 or S506 is complete, can also judge whether the mine-supplying quantity of described ore mill exceedes default mine-supplying quantity higher limit further, if so, the mine-supplying quantity of described ore mill is adjusted to described mine-supplying quantity higher limit.Wherein, mine-supplying quantity higher limit can be a default constant, as being preferably 360 tons/hour.

By the technical scheme of the present embodiment, the load condition of ore mill is comprehensively determined according to the main shaft oil pressure of ore mill, mill power and mill sound three, and come to carry out regulable control to mine-supplying quantity and feed ore concentration according to the load condition determined simultaneously, thus achieve ore mill load is adjusted more accurately and rapidly.

In order to the application mode of technical scheme in actual scene making those skilled in the art clearly understand the application, for an application scenarios, a kind of embodiment of the application in practical application will be introduced in detail below.But it should be noted that the embodiment of this application scenarios is only spirit for the ease of understanding the application and principle and illustrates, the embodiment of the application is unrestricted in this regard.On the contrary, the embodiment of the application can be applied to applicable any scene.

This application scene adopts, and based on the combination of the main shaft oil pressure of ore mill, mill power and mill sound-like state value three, considers and determines the current load condition be in of ore mill, and then determine the regulative mode of feed ore concentration and mine-supplying quantity.Particularly, see Fig. 6, show the flow chart of the embodiment of the method 3 that ore mill feed ore concentration controls in the application.In the present embodiment, can comprise the following steps:

S601, detect the current main shaft oil pressure of ore mill, mill power and mill sound the signal of telecommunication and preserve.

In the present embodiment, main detected parameters and controling parameters can be preserved, can check when overhauling equipment later.The parameter of preserving, such as can comprise the mill sound-like state value, current mine-supplying quantity, current amount of water etc. that calculate in the main shaft oil pressure in each control moment, mill power and subsequent step, the quantity that each parameter is preserved can be all data in a nearest preset time period, such as, supplemental characteristic in nearest 3 months.

S602, according to mill sound the signal of telecommunication calculate current mill sound-like state value and preserve.

Particularly, can be calculated by following formula:

YI = 100 \times \frac{(20 - X)}{16} + KD;

Wherein, YI is mill sound-like state value, and X is the current value detecting the signal of telecommunication that mill sound obtains, and KD is default corrected parameter.

S603, calculate mill sound load parameter according to the current mill power of ore mill and mill sound-like state value.

Particularly, can be calculated by following formula:

FH = \frac{JI}{J I_{\max}} \times a + YI \times (1 - a) + K D_{1};

Wherein, JI is mill power, JI _maxfor maximum mill power, YI is mill sound-like state value, and a is default coefficient of reliability, KD ₁it is the first corrected parameter.

S604, number range belonging to current main shaft oil pressure and mill load parameter, determine the current oil pressure state that is in of ore mill and load parameter state.

Particularly, each state can be determined according to table 1:

Table 1

In Table 1, first oil pressure threshold value can be 85% of maximum oil pressure, second oil pressure threshold value can be 95% of maximum oil pressure, first load parameter threshold value can be 80% of maximum mill load parameter, second load parameter threshold value can be 90% of maximum mill load parameter, 3rd load parameter threshold value can be the 70%, four load parameter threshold value of maximum mill load parameter can be 95% of maximum mill load parameter.Wherein, the first high load capacity parameter state and the second high load capacity parameter state belong to the high load capacity parameter state described in previous embodiment, and the first underload parameter state and the second underload parameter state belong to the underload parameter state described in previous embodiment.

S605, according to the current oil pressure state of ore mill and load parameter state, determine the load condition that ore mill is current and determine the regulative mode of feed ore concentration, mine-supplying quantity.

Particularly, can determine with reference to table 2:

Table 2

In table 2, the first regulated quantity is greater than the second regulated quantity.It should be noted that, load condition and feed ore concentration in table 2, mine-supplying quantity regulative mode determine on the basis of preceding method embodiment 1 and embodiment of the method 2, but it is easy and clear in order to what describe in the present embodiment, state in a tabular form, therefore the determination mode in table 2 is the basic thought meeting the application introduced in foregoing embodiments.

S606, judge whether ore mill feed ore concentration, mine-supplying quantity after regulating belong to corresponding limits, if not, enter S607, if so, directly enter S608.

Wherein, for ore mill feed ore concentration, be judge whether feed ore concentration is less than or equal to upper limit of concentration value and is more than or equal to concentration limit value; For ore mill mine-supplying quantity, be judge whether feed ore concentration exceedes mine-supplying quantity higher limit.

S607, using described corresponding limit value value as regulate after ore mill feed ore concentration and/or mine-supplying quantity, enter S608.

Particularly, when ore mill feed ore concentration is greater than upper limit of concentration value, using upper limit of concentration value as the feed ore concentration after adjustment; When ore mill feed ore concentration is less than concentration limit value, using concentration limit value as the feed ore concentration after adjustment; When ore mill mine-supplying quantity is greater than mine-supplying quantity higher limit, using mine-supplying quantity higher limit as the mine-supplying quantity after adjustment.

S608, according to the ore mill feed ore concentration after regulating and mine-supplying quantity, the vibration frequency of adjustment ore grinding storehouse vibrofeeder and the amount of water of ore mill make-up water pump, so that control actual feed ore concentration, mine-supplying quantity.

By the technical scheme of the present embodiment, the combination of sound-like state value is ground based on the main shaft oil pressure of ore mill, mill power and three, consider and determine the current load condition be in of ore mill, and then determine the control mode of feed ore concentration, mine-supplying quantity, thus achieve ore mill load is adjusted more accurately and rapidly.

Corresponding to method, present invention also provides the device that a kind of ore mill feed ore concentration controls.

See Fig. 7, show the structure chart of the device embodiment 1 that ore mill feed ore concentration controls in the application.In the present embodiment, described device can comprise:

Acquisition module 701, for obtaining ore mill current mill sound-like state value, main shaft oil pressure and mill power;

Parameter calculating module 702, for calculating mill load parameter according to described mill sound-like state value and mill power;

State determining module 703, for the oil pressure number range belonging to described main shaft oil pressure and the load value scope belonging to described mill load parameter, determines the oil pressure state that described ore mill is current and load parameter state, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current is in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, described ore mill is current belongs to underload parameter state, if described mill load parameter is more than or equal to the second load parameter threshold value, described ore mill is current belongs to high load capacity parameter state, wherein, described second oil pressure threshold value is greater than described first oil pressure threshold value, described second load parameter threshold value is greater than described first load parameter threshold value,

First concentration reduces module 704, for being in high oil pressure state and high load capacity parameter state in response to described ore mill is current simultaneously, reduces the feed ore concentration of described ore mill;

First concentration increases module 705, for being in low oil pressure state and underload parameter state in response to described ore mill is current simultaneously, increases the feed ore concentration of described ore mill.

See Fig. 8, show the structure chart of the device embodiment 2 that ore mill feed ore concentration controls in the application.In the present embodiment, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and be greater than the 3rd load parameter threshold value, described ore mill is current is in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and be more than or equal to the second load parameter threshold value, described ore mill is current is in the first high load capacity parameter state; Wherein, described 3rd load parameter threshold value is less than described first load parameter threshold value, and described 4th load parameter threshold value is greater than described second load parameter threshold value.Described device, except comprising all structures shown in Fig. 7, can also comprise:

Second concentration reduces module 801, for being in reasonable oil pressure state and the first high load capacity parameter state in response to described ore mill is current simultaneously, reduces the feed ore concentration of described ore mill;

Second concentration increases module 802, for being in reasonable oil pressure state and the first underload parameter state in response to described ore mill is current simultaneously, increases the feed ore concentration of described ore mill.

See Fig. 9, show the structure chart of the device embodiment 3 that ore mill feed ore concentration controls in the application.In the present embodiment, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and be greater than the first load parameter threshold value, described ore mill is current is in Reasonable load parameter state.Described device, except comprising all structures shown in Fig. 7, can also comprise:

Subtracting ore deposit module 901, for being in higher load condition in response to described ore mill is current, reducing the mine-supplying quantity of described ore mill; Described higher load condition is: described ore mill is current is in high oil pressure state and high load capacity parameter state simultaneously, described ore mill is current is in high oil pressure state and Reasonable load parameter state simultaneously, and described ore mill is current is in reasonable oil pressure state and high load capacity parameter state simultaneously;

Increasing ore deposit module 902, for being in low load condition in response to described ore mill is current, increasing the mine-supplying quantity of described ore mill; Described low load condition is: described ore mill is current is in low oil pressure state and underload parameter state simultaneously, described ore mill is current is in low oil pressure state and Reasonable load parameter state simultaneously, and described ore mill is current is in reasonable oil pressure state and underload parameter state simultaneously.

See Figure 10, show the structure chart of the device embodiment 4 that ore mill feed ore concentration controls in the application.In the present embodiment, described device, except comprising all structures shown in Fig. 9, can also comprise:

Maintain module 1001, for being in abnormal load state in response to ore mill, the mine-supplying quantity maintaining described ore mill is constant; Described abnormal load state comprises: described ore mill is current is in high oil pressure state and underload parameter state simultaneously, and described ore mill is current is in low oil pressure state and high load capacity parameter state simultaneously.

See Figure 11, show the structure chart of a kind of parameter calculating module 702 in the embodiment of the present application.Wherein, described parameter calculating module 702 can comprise:

Accounting calculating sub module 1101, accounts for the mill signal to noise ratio example of maximum mill sound-like state value and described mill power accounts for the power proportions of maximum mill power for calculating described mill sound-like state value;

Parameter determination submodule 1102, for being weighted average result according to described mill signal to noise ratio example and described power proportions, obtains described mill load parameter.

Furthermore, optionally, see Figure 12, the structure chart of a kind of parameter determination submodule 1102 in the embodiment of the present application is shown.Wherein, described parameter determination submodule 1102 can comprise:

Weighted average submodule 1201, is weighted on average described mill signal to noise ratio example and described power proportions for the coefficient of reliability according to ore mill detection signal, obtains result of weighted average;

First revises submodule 1202, for revising described result of weighted average with the first correction factor preset, obtains described mill load parameter.

See Figure 13, show the structure chart of a kind of acquisition module 701 in the embodiment of the present application.Wherein, described acquisition module 701 can comprise:

Signal detection submodule 1301, for the signal of telecommunication by obtaining described mill sound detect to the mill sound detect of described ore mill;

Mill sound determination submodule 1302, for accounting for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound-like state value that described ore mill is current; Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is that described signal higher limit and signal roll off the production line the difference of value, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect;

Oil pressure obtains submodule 1303, for obtaining the current main shaft oil pressure of ore mill;

Power obtains submodule 1304, for obtaining the current mill power of ore mill.

Furthermore, optionally, see Figure 14, a kind of structure chart grinding sound determination submodule 1302 in the embodiment of the present application is shown.Wherein, described mill sound determination submodule 1302 can comprise:

Signal proportion submodule 1401, accounts for the signal proportion of described signal spacing width for the difference calculated between described signal higher limit and the current value of the described signal of telecommunication;

Second revises submodule 1402, for revising described signal proportion with the second corrected parameter preset, obtains the mill sound-like state value that described ore mill is current.

It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.

For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part illustrates see the part of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.

The above is only the detailed description of the invention of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.

Claims

1. a method for ore mill feed ore concentration control, is characterized in that, comprising:

2. method according to claim 1, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and be greater than the 3rd load parameter threshold value, described ore mill is current is in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and be more than or equal to the second load parameter threshold value, described ore mill is current is in the first high load capacity parameter state; Wherein, described 3rd load parameter threshold value is less than described first load parameter threshold value, and described 4th load parameter threshold value is greater than described second load parameter threshold value;

Described method also comprises:

3. method according to claim 1, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and be greater than the first load parameter threshold value, described ore mill is current is in Reasonable load parameter state;

Described method also comprises:

Be in higher load condition in response to described ore mill is current, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: described ore mill is current is in high oil pressure state and high load capacity parameter state simultaneously, described ore mill is current is in high oil pressure state and Reasonable load parameter state simultaneously, or described ore mill is current is in reasonable oil pressure state and high load capacity parameter state simultaneously;

Be in low load condition in response to described ore mill is current, increase the mine-supplying quantity of described ore mill; Described low load condition is: described ore mill is current is in low oil pressure state and underload parameter state simultaneously, described ore mill is current is in low oil pressure state and Reasonable load parameter state simultaneously, or described ore mill is current is in reasonable oil pressure state and underload parameter state simultaneously.

4. method according to claim 3, is characterized in that, also comprises:

Be in abnormal load state in response to ore mill, the mine-supplying quantity maintaining described ore mill is constant; Described abnormal load state comprises: described ore mill is current is in high oil pressure state and underload parameter state simultaneously, or described ore mill is current is in low oil pressure state and high load capacity parameter state simultaneously.

5. method according to claim 1, is characterized in that, described according to described mill sound-like state value and mill power calculating mill load parameter, comprising:

6. method according to claim 5, is characterized in that, described basis is weighted average result to described mill signal to noise ratio example and described power proportions, obtains described mill load parameter, comprising:

7. method according to claim 1, is characterized in that, the mill sound-like state value that described acquisition ore mill is current, comprising:

Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the difference of described signal higher limit and signal lower limit, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect.

8. method according to claim 7, is characterized in that, the described signal proportion accounting for described signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines specifically to comprise the mill sound-like state value that described ore mill is current:

9. a device for ore mill feed ore concentration control, is characterized in that, comprising:

10. device according to claim 9, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and be greater than the 3rd load parameter threshold value, described ore mill is current is in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and be more than or equal to the second load parameter threshold value, described ore mill is current is in the first high load capacity parameter state; Wherein, described 3rd load parameter threshold value is less than described first load parameter threshold value, and described 4th load parameter threshold value is greater than described second load parameter threshold value;

Described device also comprises:

11. devices according to claim 9, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and be greater than the first oil pressure threshold value, described ore mill is current is in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and be greater than the first load parameter threshold value, described ore mill is current is in Reasonable load parameter state;

Described device also comprises:

Subtracting ore deposit module, for being in higher load condition in response to described ore mill is current, reducing the mine-supplying quantity of described ore mill; Described higher load condition is: described ore mill is current is in high oil pressure state and high load capacity parameter state simultaneously, described ore mill is current is in high oil pressure state and Reasonable load parameter state simultaneously, or described ore mill is current is in reasonable oil pressure state and high load capacity parameter state simultaneously;

Increasing ore deposit module, for being in low load condition in response to described ore mill is current, increasing the mine-supplying quantity of described ore mill; Described low load condition is: described ore mill is current is in low oil pressure state and underload parameter state simultaneously, described ore mill is current is in low oil pressure state and Reasonable load parameter state simultaneously, or described ore mill is current is in reasonable oil pressure state and underload parameter state simultaneously.

12. devices according to claim 11, is characterized in that, also comprise:

Maintain module, for being in abnormal load state in response to ore mill, the mine-supplying quantity maintaining described ore mill is constant; Described abnormal load state comprises: described ore mill is current is in high oil pressure state and underload parameter state simultaneously, or described ore mill is current is in low oil pressure state and high load capacity parameter state simultaneously.

13. devices according to claim 9, is characterized in that, described parameter calculating module comprises:

14. devices according to claim 13, is characterized in that, described parameter determination submodule comprises:

15. devices according to claim 9, is characterized in that, described acquisition module comprises:

Mill sound determination submodule, for accounting for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound-like state value that described ore mill is current; Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the difference of described signal higher limit and signal lower limit, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect;

Power obtains submodule, for obtaining the current mill power of ore mill.

16. devices according to claim 15, is characterized in that, grind sound determination submodule and comprise: