CN116474928B - Cement mill energy consumption optimization method and system - Google Patents
Cement mill energy consumption optimization method and system Download PDFInfo
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- CN116474928B CN116474928B CN202310744427.1A CN202310744427A CN116474928B CN 116474928 B CN116474928 B CN 116474928B CN 202310744427 A CN202310744427 A CN 202310744427A CN 116474928 B CN116474928 B CN 116474928B
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- 239000004568 cement Substances 0.000 title claims abstract description 54
- 238000005265 energy consumption Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005457 optimization Methods 0.000 title claims abstract description 19
- 230000005611 electricity Effects 0.000 claims abstract description 159
- 239000002893 slag Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000047 product Substances 0.000 description 15
- 239000002994 raw material Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- 239000011265 semifinished product Substances 0.000 description 5
- 238000007405 data analysis Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The embodiment of the specification mainly relates to the technical field of cement production energy consumption optimization, in particular to a cement grinding mill energy consumption optimization method and system. The cement mill energy consumption optimizing method includes the following steps: acquiring first data, wherein the first data comprises a clinker proportion X1, a slag proportion X2, a grinding entering ratio table X3 and a finished product ratio table X4; obtaining basic electricity consumption f1 through a clinker proportion X1 and a slag proportion X2; obtaining theoretical roll squeezer electricity consumption f2 through basic electricity consumption f1 and an entering grinding ratio table X3; obtaining first electricity consumption f3 of the ball mill through the basic electricity consumption f1 and the finished product ratio table X4; obtaining second electricity consumption f4 of the ball mill through the basic electricity consumption f1 and the grinding entering ratio table X3; the first electricity consumption f3 of the ball passing mill and the second electricity consumption f4 of the ball passing mill acquire theoretical electricity consumption f5 of the ball passing mill; and obtaining second data, wherein the second data comprise actual roller press electricity consumption A and actual ball mill electricity consumption B. According to the cement mill energy consumption optimization method and system, whether the cement mill has energy consumption improvement space can be judged efficiently and accurately.
Description
Technical Field
The embodiment of the specification mainly relates to the technical field of cement production energy consumption optimization, in particular to a cement grinding mill energy consumption optimization method and system.
Background
Cement production is an industry with higher energy consumption, wherein a cement mill is the final procedure of cement production and is mainly used for grinding cement clinker (retarder, performance adjusting material and the like) to proper granularity. The energy consumption of the cement mill accounts for about 25 to 30 percent of the whole production line. Through carrying out the energy consumption analysis to the cement mill, can judge whether the cement mill has the energy consumption improvement space, if there is the energy consumption improvement space, just can carry out corresponding improvement, and then can save the energy consumption of cement mill. The existing cement mill energy consumption analysis method mainly depends on manual analysis and offline data analysis, and the cement mill energy consumption analysis method needs manual data analysis and has low efficiency; and is limited by subjectivity and experience of manual analysis, it is difficult to accurately judge whether the cement mill has energy consumption improvement space.
Disclosure of Invention
Aiming at the problems existing in the prior art, the embodiment of the specification provides an energy consumption optimizing method and system for a cement mill, which can efficiently and accurately judge whether the cement mill has an energy consumption improvement space.
In a first aspect, embodiments of the present disclosure provide a method for optimizing energy consumption of a cement mill, including the steps of:
acquiring first data, wherein the first data comprises a clinker proportion X1, a slag proportion X2, a grinding entering ratio table X3 and a finished product ratio table X4;
obtaining basic electricity consumption f1 through a clinker proportion X1 and a slag proportion X2;
obtaining theoretical roll squeezer electricity consumption f2 through basic electricity consumption f1 and an entering grinding ratio table X3;
obtaining first electricity consumption f3 of the ball mill through the basic electricity consumption f1 and the finished product ratio table X4;
obtaining second electricity consumption f4 of the ball mill through the basic electricity consumption f1 and the grinding entering ratio table X3;
obtaining theoretical ball mill electricity consumption f5 through the first electricity consumption f3 of the ball mill and the second electricity consumption f4 of the ball mill;
acquiring second data, wherein the second data comprises actual roller press electricity consumption A and actual ball mill electricity consumption B;
acquiring power consumption D1 to be improved of the roller press through the actual power consumption A of the roller press and the theoretical power consumption f2 of the roller press;
obtaining the power consumption D2 of the ball mill to be improved through the actual power consumption B of the ball mill and the theoretical power consumption f5 of the ball mill;
when the power consumption D1 to be improved of the roller press is larger than a first preset power consumption threshold, judging that the roller press has consumption reduction improvement space; otherwise, judging that the roller press does not have consumption reduction improvement space;
when the power consumption D2 to be improved of the ball mill is larger than a second preset power consumption threshold value, judging that the ball mill has a consumption reduction improvement space; otherwise, the ball mill is judged to have no room for improvement in consumption reduction.
Preferably, the basic electricity consumption f1 is specifically calculated by the following formula:
wherein a is 35 kwh/ton.
Preferably, the theoretical roll squeezer electricity consumption f2 is specifically calculated by the following formula:
where b is 320 square centimeters per gram.
Preferably, the first electricity consumption f3 of the ball mill is specifically calculated by the following formula:
where b is 320 square centimeters per gram.
Preferably, the second electricity consumption f4 of the ball mill is specifically calculated by the following formula:
where b is 320 square centimeters per gram.
Preferably, the theoretical ball mill electricity consumption f5 is specifically calculated by the following formula:
。
preferably, the power consumption D1 to be improved of the roller press is calculated by the following formula:
。
preferably, the electricity consumption D2 to be improved of the ball mill is specifically calculated by the following formula:
。
preferably, when the roller press has room for improvement in consumption reduction, the roller gap or the accumulator pressure or the grinding pressure or the V selection is optimized;
when the ball mill has room for improvement in consumption reduction, the loading capacity of the grinding body or the grading of the grinding body or the activation ring or the grate seam or the powder selecting machine or the main exhaust fan or the tail grinding fan are optimized.
In a second aspect, embodiments of the present disclosure provide a cement mill energy consumption optimization system comprising:
the first data acquisition module is used for acquiring first data, wherein the first data comprises a clinker ratio X1, a slag ratio X2, a grinding entering ratio table X3 and a finished product ratio table X4;
the basic electricity consumption acquisition module is used for acquiring basic electricity consumption f1 through a clinker proportion X1 and a slag proportion X2;
the theoretical roll squeezer electricity consumption acquisition module is used for acquiring theoretical roll squeezer electricity consumption f2 through basic electricity consumption f1 and a grinding ratio table X3;
the first electricity consumption acquisition module of the ball mill is used for acquiring the first electricity consumption f3 of the ball mill through the basic electricity consumption f1 and the finished product ratio table X4;
the second electricity consumption acquisition module of the ball mill is used for acquiring the second electricity consumption f4 of the ball mill through the basic electricity consumption f1 and the grinding entering ratio table X3;
the theoretical ball mill electricity consumption acquisition module is used for acquiring theoretical ball mill electricity consumption f5 through ball mill first electricity consumption f3 and ball mill second electricity consumption f4;
the second data acquisition module is used for acquiring second data, wherein the second data comprises actual rolling machine electricity consumption A and actual ball mill electricity consumption B;
the power consumption acquisition module to be improved of the roller press is used for acquiring power consumption D1 to be improved of the roller press through actual power consumption A of the roller press and theoretical power consumption f2 of the roller press;
the to-be-improved electricity consumption acquisition module of the ball mill is used for acquiring to-be-improved electricity consumption D2 of the ball mill through the actual electricity consumption B of the ball mill and the theoretical electricity consumption f5 of the ball mill;
the first consumption reduction improvement space judging module is used for judging that the roller press has consumption reduction improvement space when the to-be-improved power consumption D1 of the roller press is larger than a first preset power consumption threshold value; otherwise, judging that the roller press does not have consumption reduction improvement space;
the second consumption reduction improvement space judging module is used for judging that the ball mill has consumption reduction improvement space when the to-be-improved power consumption D2 of the ball mill is larger than a second preset power consumption threshold value; otherwise, the ball mill is judged to have no room for improvement in consumption reduction.
Advantageous effects
According to the cement mill energy consumption optimization method and system, only the clinker proportion X1, the slag proportion X2, the grinding entering ratio table X3, the finished product ratio table X4, the actual roll squeezer electricity consumption A and the actual ball mill electricity consumption B are required to be obtained, the values of the roll squeezer electricity consumption D1 to be improved and the ball mill electricity consumption D2 to be improved can be automatically calculated, the judging results of the roll squeezer consumption reduction improvement space and the ball mill consumption reduction improvement space can be automatically obtained, the operation is simple and convenient, and the calculation efficiency is very high; and the power consumption to be improved can be calculated aiming at the roller press and the ball mill respectively, so that the judgment result of the consumption reduction improvement space is more accurate, and consumption reduction improvement measures can be pertinently adopted according to the judgment result.
Drawings
FIG. 1 is a schematic flow chart of a cement mill energy consumption optimization method according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a cement mill energy consumption optimization system according to an embodiment of the present disclosure;
fig. 3 is a flowchart of the operation of the cement mill provided in the embodiments of the present description.
Detailed Description
Embodiments of the present specification will be described in more detail below with reference to the accompanying drawings.
Example 1: a cement mill energy consumption optimization method, as shown in fig. 1, comprising the following steps:
l1, acquiring first data, wherein the first data comprises a clinker ratio X1, a slag ratio X2, a grinding entering ratio table X3 and a finished product ratio table X4. Cement raw materials for cement production generally include clinker, slag, and auxiliary materials (e.g., gypsum, etc.), wherein the clinker and slag have the greatest influence on the power consumption of a cement mill. In this example, clinker ratio X1 may be 75%, slag ratio X2 may be 3%, mill input ratio Table X3 may be 200 square centimeters per gram, and finished product ratio Table X4 may be 335 square centimeters per gram.
In addition, as shown in fig. 3, the cement grinding process includes a roll press and a ball mill, wherein the cement raw material is ground from 0 square centimeter per gram to a semi-finished product of the grinding-in ratio table X3 by the roll press, and then the semi-finished product of the grinding-in ratio table X3 is ground to a finished product of the finishing ratio table X4 by the ball mill.
And L2, obtaining the basic electricity consumption f1 through the clinker proportion X1 and the slag proportion X2. The basic electricity consumption f1 is specifically calculated by the following formula:
wherein a is 35 kwh/ton. The basic electricity consumption f1 refers to the electricity consumption of grinding a certain amount (for example, 200 tons or 150 tons, and how much ton is specific without limitation, as long as it is reasonable) of cement raw materials from 0 square centimeter per gram to 320 square centimeters per gram using only the ball mill. In this example, when the clinker ratio X1 is 75% and the slag ratio X2 is 3%, the base power consumption f1 is calculated to be 27.51 kWh/ton.
And L3, obtaining the theoretical power consumption f2 of the roller press through the basic power consumption f1 and the grinding ratio table X3. The theoretical roll squeezer electricity consumption f2 is specifically calculated by the following formula:
where b is 320 square centimeters per gram. Theoretical roll press power consumption f2 refers to the power consumption required to grind a cement raw material from 0 square centimeter per gram to a semi-finished product of the mill input ratio table X3 using only a roll press. In this example, the theoretical roll press power consumption f2 was calculated to be 8.88 kwh/ton when the on-ground ratio table X3 was 200 square centimeters per gram.
And L4, obtaining the first electricity consumption f3 of the ball mill through the basic electricity consumption f1 and the finished product ratio table X4. The first electricity consumption f3 of the ball mill is specifically calculated by the following formula:
where b is 320 square centimeters per gram. The first electricity consumption f3 of the ball mill means electricity consumption required for grinding cement raw materials from 0 square cm per gram to the final product of the final product ratio table X4 using only the ball mill. In this example, when the yield ratio table X4 was 335 square centimeters per gram, the first electricity consumption f3 of the ball mill was calculated to be 29.44 kwh/ton.
And L5, obtaining second electricity consumption f4 of the ball mill through the basic electricity consumption f1 and the grinding entering ratio table X3. The second electricity consumption f4 of the ball mill is specifically calculated by the following formula:
where b is 320 square centimeters per gram. The second electricity consumption f4 of the ball mill refers to the electricity consumption required for grinding the cement raw material from 0 square cm per gram to the semifinished product of the mill input ratio table X3 using only the ball mill. In this example, the second electricity consumption f4 of the ball mill was calculated to be 16.42 kwh/ton when the grinding ratio table X3 was 200 square cm per gram.
And L6, obtaining theoretical ball mill electricity consumption f5 through the first electricity consumption f3 of the ball mill and the second electricity consumption f4 of the ball mill. The theoretical ball mill electricity consumption f5 is specifically calculated by the following formula:
theoretical ball mill power consumption f5 refers to the power consumption required to grind the cement semi-finished product of the input mill ratio table X3 to the cement finished product of the final ratio table X4 using only the ball mill. In this example, the theoretical ball mill electricity consumption f5 calculated a value of 13.02 kwh/ton when the ball mill first electricity consumption f3 was 29.44 kwh/ton and the ball mill second electricity consumption f4 was 16.42 kwh/ton.
And L7, acquiring second data, wherein the second data comprise actual roller press electricity consumption A and actual ball mill electricity consumption B. In this example, the actual roll squeezer electricity consumption A was 9.5 kWh/ton, and the actual ball mill electricity consumption B was 15 kWh/ton.
And L8, acquiring the power consumption D1 to be improved of the roller press through the power consumption A of the actual roller press and the power consumption f2 of the theoretical roller press. The power consumption D1 to be improved of the roller press is specifically calculated by the following formula:
in this example, when the actual power consumption a of the roll squeezer is 9.5 kwh/ton, the calculated value of the power consumption D1 to be improved of the roll squeezer is 0.62 kwh/ton.
And L9, obtaining the electricity consumption D2 of the ball mill to be improved through the actual electricity consumption B of the ball mill and the theoretical electricity consumption f5 of the ball mill. The electricity consumption D2 to be improved of the ball mill is specifically calculated by the following formula:
in this example, when the actual electricity consumption B of the ball mill is 15 kwh/ton, the electricity consumption D2 to be improved of the ball mill is calculated to be 1.98 kwh/ton.
L10, when the power consumption D1 to be improved of the roller press is larger than a first preset power consumption threshold value, judging that the roller press has a consumption reduction improvement space; otherwise, judging that the roller press does not have consumption reduction improvement space. In this embodiment, the first preset power consumption threshold may be 0.5 kwh/ton. In the embodiment, the power consumption D1 to be improved of the roller press is 0.62 kilowatt-hour/ton and is more than 0.5 kilowatt-hour/ton, so that the roller press is judged to have a consumption reduction improvement space.
L11. when the electricity consumption D2 to be improved of the ball mill is larger than a second preset electricity consumption threshold value, judging that the ball mill has consumption reduction improvement space; otherwise, the ball mill is judged to have no room for improvement in consumption reduction. In this embodiment, the second preset power consumption threshold may be 0.4 kwh/ton. In the embodiment, the electricity consumption D2 to be improved of the ball mill is 1.98 kilowatt-hour/ton and is more than 0.4 kilowatt-hour/ton, so that the ball mill is judged to have a room for improvement in consumption reduction.
In addition, in the embodiment, the basic electricity consumption f1, the theoretical roller press electricity consumption f2, the first electricity consumption f3 of the ball mill, the second electricity consumption f4 of the ball mill, the theoretical ball mill electricity consumption f5, the electricity consumption D1 to be improved of the roller press and the electricity consumption D2 to be improved of the ball mill can be directly calculated through a software platform. Namely, a user only needs to input the clinker ratio X1, the slag ratio X2, the grinding entering ratio table X3 and the finished product ratio table X4, and the values of the first preset power consumption threshold value, the second preset power consumption threshold value, the actual power consumption A of the roller press and the actual power consumption B of the ball mill, and the software platform can directly output the values of the power consumption D1 to be improved of the roller press, the power consumption D2 to be improved of the ball mill, and the judging results of the consumption reduction improvement space of the roller press and the consumption reduction improvement space of the ball mill.
As shown in fig. 3, the cement grinding process comprises a roller press, a steady flow bin, a V-separation device, a ball mill, a powder separator and other devices. When the roller press is judged to have the space for reducing consumption improvement in the step L10, the power consumption of the roller press can be reduced by optimizing the roller gap or the pressure of the energy accumulator or the grinding pressure or the V selection, so that the power consumption of the whole cement grinding process is reduced.
When the ball mill is judged to have the space for improving consumption reduction in the step L11, the power consumption of the ball mill can be reduced by optimizing the loading capacity of the grinding body or the grading of the grinding body or the activating ring or the grate seam or the powder concentrator or the main exhaust fan or the tail grinding fan, so that the power consumption of the whole cement grinding process is reduced.
According to the cement mill energy consumption optimization method, the values of the power consumption D1 to be improved of the roller press and the power consumption D2 to be improved of the ball mill can be automatically calculated only by obtaining the values of the clinker proportion X1, the slag proportion X2, the grinding entering proportion table X3, the finished product proportion table X4, the actual power consumption A of the roller press and the actual power consumption B of the ball mill, and judging results of the consumption reduction improvement space of the roller press and the consumption reduction improvement space of the ball mill can be automatically obtained, so that the operation is simple and convenient, and the calculation efficiency is very high; in addition, the energy consumption optimization method of the cement mill carries out power consumption calculation to be improved respectively aiming at the roller press and the ball mill, so that the judgment result of the consumption reduction improvement space is more accurate, and consumption reduction improvement measures can be pertinently adopted according to the judgment result.
Example 2: a cement mill energy consumption optimization system for performing the cement mill energy consumption optimization method of example 1, as shown in fig. 2, specifically comprising: the device comprises a first data acquisition module, a basic power consumption acquisition module, a theoretical roller press power consumption acquisition module, a ball mill first power consumption acquisition module, a ball mill second power consumption acquisition module, a theoretical ball mill power consumption acquisition module, a second data acquisition module, a roller press power consumption acquisition module to be improved, a ball mill power consumption acquisition module to be improved, a first consumption reduction improvement space judgment module and a second consumption reduction improvement space judgment module.
The first data acquisition module is used for acquiring first data, wherein the first data comprises a clinker ratio X1, a slag ratio X2, a grinding entering ratio table X3 and a finished product ratio table X4. The basic electricity consumption acquisition module is used for acquiring basic electricity consumption f1 through a clinker proportion X1 and a slag proportion X2. The theoretical roll squeezer electricity consumption acquisition module is used for acquiring theoretical roll squeezer electricity consumption f2 through basic electricity consumption f1 and an in-grinding ratio table X3. The ball mill first electricity consumption acquisition module is used for acquiring the ball mill first electricity consumption f3 through the basic electricity consumption f1 and the finished product ratio table X4. The ball mill second electricity consumption acquisition module is used for acquiring the ball mill second electricity consumption f4 through the basic electricity consumption f1 and the grinding entering ratio table X3. The theoretical ball mill electricity consumption acquisition module is used for acquiring theoretical ball mill electricity consumption f5 through ball mill first electricity consumption f3 and ball mill second electricity consumption f4. The second data acquisition module is used for acquiring second data, and the second data comprise actual roller press electricity consumption A and actual ball mill electricity consumption B. The power consumption to be improved of the roller press acquisition module is used for acquiring power consumption D1 to be improved of the roller press through power consumption A of the actual roller press and power consumption f2 of the theoretical roller press. The to-be-improved electricity consumption acquisition module of the ball mill is used for acquiring to-be-improved electricity consumption D2 of the ball mill through actual electricity consumption B of the ball mill and theoretical electricity consumption f5 of the ball mill. The first consumption reduction improvement space judging module is used for judging that the roller press has consumption reduction improvement space when the to-be-improved power consumption D1 of the roller press is larger than a first preset power consumption threshold value; otherwise, judging that the roller press does not have consumption reduction improvement space. The second consumption reduction improvement space judging module is used for judging that the ball mill has consumption reduction improvement space when the to-be-improved power consumption D2 of the ball mill is larger than a second preset power consumption threshold value; otherwise, the ball mill is judged to have no room for improvement in consumption reduction.
The cement mill energy consumption optimizing system of the embodiment can automatically calculate and obtain the values of the power consumption D1 to be improved of the roller press and the power consumption D2 to be improved of the ball mill only by obtaining the values of the clinker proportion X1, the slag proportion X2, the grinding entering proportion table X3, the finished product proportion table X4, the actual power consumption A of the roller press and the actual power consumption B of the ball mill, can automatically obtain the judging results of the consumption reduction improving space of the roller press and the consumption reduction improving space of the ball mill, and is simple and convenient to operate and extremely high in calculation efficiency; in addition, the energy consumption optimizing system of the cement mill carries out power consumption calculation to be improved respectively aiming at the roller press and the ball mill, so that the judging result of the consumption reduction improvement space is more accurate, and consumption reduction improvement measures can be pertinently adopted according to the judging result.
While certain embodiments of the present description have been shown in the accompanying drawings, it is to be understood that the present description may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the present description. It should be understood that the drawings and examples of the present specification are for illustrative purposes only and are not intended to limit the scope of the present specification.
Claims (3)
1. The energy consumption optimizing method for the cement mill is characterized by comprising the following steps of:
acquiring first data, wherein the first data comprises a clinker proportion X1, a slag proportion X2, a grinding entering ratio table X3 and a finished product ratio table X4;
obtaining basic electricity consumption f1 through a clinker proportion X1 and a slag proportion X2;
obtaining theoretical roll squeezer electricity consumption f2 through basic electricity consumption f1 and an entering grinding ratio table X3;
obtaining first electricity consumption f3 of the ball mill through the basic electricity consumption f1 and the finished product ratio table X4;
obtaining second electricity consumption f4 of the ball mill through the basic electricity consumption f1 and the grinding entering ratio table X3;
obtaining theoretical ball mill electricity consumption f5 through the first electricity consumption f3 of the ball mill and the second electricity consumption f4 of the ball mill;
acquiring second data, wherein the second data comprises actual roller press electricity consumption A and actual ball mill electricity consumption B;
acquiring power consumption D1 to be improved of the roller press through the actual power consumption A of the roller press and the theoretical power consumption f2 of the roller press;
obtaining the power consumption D2 of the ball mill to be improved through the actual power consumption B of the ball mill and the theoretical power consumption f5 of the ball mill;
when the power consumption D1 to be improved of the roller press is larger than a first preset power consumption threshold, judging that the roller press has consumption reduction improvement space; otherwise, judging that the roller press does not have consumption reduction improvement space;
when the power consumption D2 to be improved of the ball mill is larger than a second preset power consumption threshold value, judging that the ball mill has a consumption reduction improvement space; otherwise, judging that the ball mill does not have consumption reduction improvement space;
the basic electricity consumption f1 is specifically calculated by the following formula:
wherein a is 35 kWh/ton;
the theoretical roll squeezer electricity consumption f2 is specifically calculated by the following formula:
wherein b is 320 square centimeters per gram;
the first electricity consumption f3 of the ball mill is specifically calculated by the following formula:
wherein b is 320 square centimeters per gram;
the second electricity consumption f4 of the ball mill is specifically calculated by the following formula:
wherein b is 320 square centimeters per gram;
the theoretical ball mill electricity consumption f5 is specifically calculated by the following formula:
；
the power consumption D1 to be improved of the roller press is specifically calculated by the following formula:
；
the electricity consumption D2 to be improved of the ball mill is specifically calculated by the following formula:
。
2. the method for optimizing energy consumption of a cement mill according to claim 1, wherein when the roll squeezer has room for improvement in consumption reduction, the roll gap or accumulator pressure or grinding pressure or V option is optimized;
when the ball mill has room for improvement in consumption reduction, the loading capacity of the grinding body or the grading of the grinding body or the activation ring or the grate seam or the powder selecting machine or the main exhaust fan or the tail grinding fan are optimized.
3. A cement mill energy consumption optimization system employing the cement mill energy consumption optimization method of claim 1, the cement mill energy consumption optimization system comprising:
the first data acquisition module is used for acquiring first data, wherein the first data comprises a clinker ratio X1, a slag ratio X2, a grinding entering ratio table X3 and a finished product ratio table X4;
the basic electricity consumption acquisition module is used for acquiring basic electricity consumption f1 through a clinker proportion X1 and a slag proportion X2;
the theoretical roll squeezer electricity consumption acquisition module is used for acquiring theoretical roll squeezer electricity consumption f2 through basic electricity consumption f1 and a grinding ratio table X3;
the first electricity consumption acquisition module of the ball mill is used for acquiring the first electricity consumption f3 of the ball mill through the basic electricity consumption f1 and the finished product ratio table X4;
the second electricity consumption acquisition module of the ball mill is used for acquiring the second electricity consumption f4 of the ball mill through the basic electricity consumption f1 and the grinding entering ratio table X3;
the theoretical ball mill electricity consumption acquisition module is used for acquiring theoretical ball mill electricity consumption f5 through ball mill first electricity consumption f3 and ball mill second electricity consumption f4;
the second data acquisition module is used for acquiring second data, wherein the second data comprises actual rolling machine electricity consumption A and actual ball mill electricity consumption B;
the power consumption acquisition module to be improved of the roller press is used for acquiring power consumption D1 to be improved of the roller press through actual power consumption A of the roller press and theoretical power consumption f2 of the roller press;
the to-be-improved electricity consumption acquisition module of the ball mill is used for acquiring to-be-improved electricity consumption D2 of the ball mill through the actual electricity consumption B of the ball mill and the theoretical electricity consumption f5 of the ball mill;
the first consumption reduction improvement space judging module is used for judging that the roller press has consumption reduction improvement space when the to-be-improved power consumption D1 of the roller press is larger than a first preset power consumption threshold value; otherwise, judging that the roller press does not have consumption reduction improvement space;
the second consumption reduction improvement space judging module is used for judging that the ball mill has consumption reduction improvement space when the to-be-improved power consumption D2 of the ball mill is larger than a second preset power consumption threshold value; otherwise, the ball mill is judged to have no room for improvement in consumption reduction.
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