CN105964346A - Visualization method for quantitative gradation technology of ball-milling equipment's milling ball - Google Patents
Visualization method for quantitative gradation technology of ball-milling equipment's milling ball Download PDFInfo
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- CN105964346A CN105964346A CN201610161104.XA CN201610161104A CN105964346A CN 105964346 A CN105964346 A CN 105964346A CN 201610161104 A CN201610161104 A CN 201610161104A CN 105964346 A CN105964346 A CN 105964346A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- Crushing And Grinding (AREA)
Abstract
The invention discloses a visualization method for a quantitative gradation technology of ball-milling equipment's milling ball. The method specifically comprises selection of ball-milling equipment and an armor material. Grading examination index is determined by the visualization method; symmetric horizontal experimental points which can reflect experimental results most effectively are determined; milling balls with different ball diameters undergo experiments by the combination of the symmetric horizontal experimental points; and through visualized analysis, the optimum gradation scheme of milling balls with different ball diameters is obtained. The invention puts forward a systematic complete mill ball loading and adding technical scheme. By the visualization method, the optimum loading capacity of milling balls, the most economical milling ball material and the optimum milling ball gradation scheme are obtained, and the ''bottleneck'' that the energy-saving and consumption reduction and production cost reduction are unremarkable and instable and milling balls cannot be promoted or applied is broken through.
Description
Technical field
The present invention relates to abrading-ball field, being specifically related to is a kind of visualization quantifying grating technology for ball-grinding machine abrading-ball
Method.
Background technology
China's high-abrasive material industrial market scale quickly increases, and overall manufacture level improves constantly.Along with national economy is steady
Step development, the field such as China's thermal power generation, metallurgical mine, building material cement also keeps steady growth to the demand of wear-resistant ball section
Situation, the demand of the most domestic wear-resistant ball section reaches 208.74 ten thousand tons in 2015, and following table lists 2010-2015, and such produces
The growth pattern of product domestic demand amount:
2010-2015 domestic abrasion-resistant cast abrading-ball section market demand (ten thousand tons)
According to incompletely statistics, in recent years, the export volume of China's year all kinds of wear-resistant ball section is 1,000,000 ton-150 ten thousand tons.Can
See, though this market demand total amount is relatively big, but, for a long time just because of domestic abrading-ball manufacturing technology, process equipment fall behind, produce
Technique many decades is constant, thinks little of refine, causes iron and steel liquid degree of purity poor, and modification effect is unstable, and process of setting exists a large amount of
Segregation, variation and unstable tissue, cause interior tissue the finest and close and surface quality be poor；And abrading-ball heart portion is to the mechanical property on surface
Energy, serviceability are inconsistent, directly affects the service life of abrading-ball.
Ball mills quantifies the scientific research methods of grating technology can be divided into four-stage by its level of development:
1. the trial and error stage；
2. orthogonal experiment method (experimental period, relatively costly, and large sample cannot be processed)；
3. the exact test method that visual information processes；
4. use Intelligentized Control Model.
Abroad, have begun to grope the 3rd step and the section of the 4th step in abrading-ball manufacture and use field in recent years
Grind method and use related art method and instrument formulation, replenishment of process, manufacturing, use and monitor embodiment technique " marrow " content
Exquisite device, but very different, make slow progress.At home, remain in application orthogonal experiment method now to carry out science and grind
Study carefully with in the second stage of production application, cause a large amount of dynamically changing factor to can not get effectively controlling and predicting, product manufacturing
Long-standing waste is big, efficiency is low with product use, and the problem that cost is high can not get solving always；Can not effectively utilize at a high speed
The information technology of development, intellectually and automatically technology accelerate the technological progress in this field, play the pressure of the science and technology effect of taking the lead in race
Increasing.
Abrading-ball ball mill is mainly used for crushing, milling various abrasive material at industrial circles such as electric power, mining industry, cement, its equipment,
Though abrasive material and medium are different, but operation principle is identical, and research method is consistent, and job content is close.Tradition coal pulverizer installs abrading-ball additional
Mainly with coal pulverizer electric current for reference to foundation, taking periodically to install major diameter abrading-ball mode (φ 60mm) additional, be easily caused coal-grinding machine barrel
Internal portion different-diameter abrading-ball ratio is unreasonable, causes the crushing force to coal cinder, coal grain to have a surplus, and grinding forces is not enough；Due to this
Under working condition, the DYNAMIC DISTRIBUTION of Different Diameter abrading-ball is unfavorable for high efficiency grinding；Relatively big plus ature of coal normal off-design coal, make system
Powder unit consumption raises.
To this end, inventor, amass design and the manufacturing experience for many years to abrading-ball, propose one for ball-grinding machine abrading-ball
Quantify the method for visualizing of grating technology to solve the problems referred to above.
Summary of the invention
It is an object of the invention to provide a kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball, utilization can
Depending on change method by few experiment, obtain the optimal useful load of abrading-ball, most economical Material quality of grinding balls and optimal abrading-ball grading distribution scheme,
Break through owing to being made so far by the multi-factor restricts such as grinding ball material, ball milling equipment, material characteristic, working environment and interactive effects
The modern abrading-ball grating problem of research both at home and abroad is all stuck in the qualitative investigation stage, breaks through using abrading-ball generation save energy and reduce the cost and drop
The effect of low production cost is the most notable, unstable, adds undue dependence experience, and causing cannot " bottleneck " of popularization and application.
For reaching above-mentioned purpose, the technical scheme is that
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball of the present invention, including walking as follows
Rapid:
(1) ball-grinding machine is rationally selected according to the demand of known abrasives characteristic and production capacity；
(2) by operating condition and service life need select armoured material；
(3) use method for visualizing after determining N number of grating performance assessment criteria, list the shadow affecting N number of grating performance assessment criteria
The factor of sound also lists its horizontal extent according to working experience, and described N is integer；
(4) as method for visualizing determine in the horizontal extent drafted in described step (3) can be described in most effective reflection
The horizontal experimental point of symmetric form of performance assessment criteria excursion；
(5) by certain of N kind sphere diameter be abrading-ball according to a certain percentage with non-integral multiple design, and combine described step (4)
The horizontal experimental point of symmetric form gone out is tested, and is using certain material N kind by drawing the visual analyzing of experimental result
The grading distribution scheme of the sphere diameter abrading-ball optimal different sphere diameter abrading-balls under the conditions of optimal abrading-ball useful load and most economical Material quality of grinding balls, institute
Stating N is integer.
Preferably, in described step (1), ball-grinding machine selects coal pulverizer under the conditions of requiring dry grinding or wet grinding, when abrasive material is
Metal ore mill is selected, when abrasive material is the non-gold in nonmetal soft ore deposit or nonmetal hard ore deposit when ferrous metal ore or nonferrous metals ore
Differential grinding machine during genus；In described step (5), the sphere diameter of abrading-ball is specially four kinds.
Preferably, described in step (3), grating performance assessment criteria is four, and four grating performance assessment criteria are specially grinding machine energy
The abrasion of consumption, abrading-ball, flour extraction and production cost reduction rate；Described influence factor is specially six, and described six influence factors divide
Wei armoured material, abrasives, abrading-ball useful load, sphere diameter proportioning, abrading-ball alloying component and heat treating regime.
Preferably, method for visualizing described in step (3)-(5) is to be in the design of experiment condition, the analysis of experimental result
During optimizing influence factor's horizontal extent from experimental result, draw experimental factors by science and examine with grating
2.5D graph of a relation between index, from the comprehensive analysis to several graphs of a relation, thus obtains " design of experiment condition ", " experiment
The analysis of result " and " optimizing influence factor's horizontal extent in experimental result " purpose, and in experimental data six influence factors
The visual analysis method of " influence factor → grating performance assessment criteria maps " is carried out with described four grating performance assessment criteria.
Preferably, experiment condition described in step (4) be designed as multiple influence factor's experimental designs are decomposed into multiple
Two factor level arrangements, constantly regulate experimental level by drawing method so that be approximation at each two factor Spaces experimental points
Uniform distribution.
Preferably, analyzing of experimental result described in step (4) is to sit using two influence factors to be analyzed as transverse and longitudinal
Mark, using test grating performance assessment criteria index as wait characteristic evidences, make 2.5 dimension figure, by the analysis of figure is learnt affect because of
The element affecting laws to grating performance assessment criteria, the situation of multiple influence factors is decomposed into several 2.5 dimension graphic operations；In experimental result
Optimizing influence factor's horizontal extent is to draw several 2.5 dimension figures described by superposition, finds concrete grating performance assessment criteria scope
Influence factor's numerical range, thus reach to seek the purpose of excellent experimental result optimization experiment.
Preferably, optimal abrading-ball useful load described in step (5) is on the premise of realizing normal flour extraction, obtained
Lowest production cost is optimal abrading-ball useful load.
Preferably, when ball-grinding machine is coal pulverizer, most economical Material quality of grinding balls is Cr grinding balls, and described chromium content is
10.86%, determine that optimal four kinds of different sphere diameter abrading-ball grading distribution schemes are Φ 60: Φ 50: Φ 40: Φ 30=11.65:50.11:
28.17:10.07, it is determined that the optimal useful load of abrading-ball is 36.23t.
The beneficial effects of the present invention is,
(1) present invention is in ball mill running, and ball mill whether all can set in single hop or multistage working area
Determine abrasive material and under conditions of medium forms preferable pack completeness, by the determination of the grading distribution scheme of optimal different sphere diameter abrading-balls can be made
High-quality abrading-ball adapts to different operating environment, gives full play to its excellent serviceability, embodies the most energy-saving and cost-reducing and fall
The effect of low production production cost；
(2) present invention designs various ball mills grating technical scheme, and considers and analyze single hop or multistage work
Industry district abrading-ball stream kinetic characteristic, to by performance assessment criteria and influence factors such as energy consumption of mill, abrading-ball abrasion, flour extraction, production costs
The skill element experimental system formed with level etc. uses method for visualizing to carry out adding up, calculate, arrange and optimization draws abrading-ball
Optimum gradation technique；And apply method for visualizing and collection of illustrative plates, in conjunction with on-the-spot actual, formulate the level of the most preferably different sphere diameter abrading-ball of abrading-ball
Formula case, it is ensured that in ball mill, abrading-ball grating is in engineering state optimum gradation level reliably；
(3) present invention 4 grating performance assessment criteria (energy consumption, abrasion, flour extraction, production cost), 6 gratings are affected because of
Element (armoured material, abrasives, abrading-ball useful load, abrading-ball sphere diameter proportioning, abrading-ball alloying component and heat treating regime) and respectively take
In the experimental system of 13 level point compositions, method for visualizing is used not only to obtain mill with few experiment number (13 groups times)
Ball optimum gradation scheme, and obtain the optimal abrading-ball useful load of ball milling coal dust least cost and most economical Material quality of grinding balls；
(4) present invention uses method for visualizing by few experiment, has obtained the optimal useful load of abrading-ball, most economical abrading-ball
Material and optimal abrading-ball grading distribution scheme, break through due to multifactor by grinding ball material, ball milling equipment, material characteristic, working environment etc.
Restriction and interactive effects and making are studied abrading-ball grating problem the most both at home and abroad and are all stuck in the qualitative investigation stage, break through making
Energy-saving and cost-reducing and reduction production cost the effect produced with abrading-ball is the most notable, unstable, adds undue dependence experience, causes nothing
" bottleneck " of method popularization and application.
Accompanying drawing explanation
If Fig. 1 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Ball amount affects floor map when 60mm abrading-ball consumption difference to power consumption；
If Fig. 2 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Affecting of power consumption 2.5 is tieed up schematic diagram when 60mm abrading-ball consumption difference by ball amount；
If Fig. 3 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Ball amount impact total ball load schematic cross-section on power consumption when 60mm abrading-ball consumption difference；
If Fig. 4 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Ball amount influence curve schematic diagram to power consumption when 60mm abrading-ball consumption is 15%；
If Fig. 5 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Ball amount affects floor map to power consumption during Cr content difference in abrading-ball；
If Fig. 6 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Affecting of power consumption 2.5 is tieed up schematic diagram during Cr content difference in abrading-ball by ball amount；
If Fig. 7 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Ball amount impact total ball load schematic cross-section on power consumption during Cr content difference in abrading-ball；
If Fig. 8 is a kind of general assembly in the method for visualizing of ball-grinding machine abrading-ball quantization grating technology of the present invention
Ball amount influence curve schematic diagram to power consumption time Cr content is 4% in abrading-ball；
Such as the abrading-ball that Fig. 9 is a kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball of the present invention
Total installed capacity weight and 60mm diameter abrading-ball installation rate affect schematic diagram to wear away；
If Figure 10 is of the present invention a kind of to quantify in the method for visualizing of grating technology total for ball-grinding machine abrading-ball
Ball load power consumption when four kinds of different-diameter abrading-balls are different from Cr content is that 20kWh/t optimizes interval schematic diagram；
If Figure 11 is of the present invention a kind of to quantify in the method for visualizing of grating technology total for ball-grinding machine abrading-ball
Cost is reduced percentage ratio when four kinds of different-diameter abrading-balls are different from Cr content by ball load affects schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings and be embodied as example the present invention is described in further details.
Tradition coal pulverizer installs abrading-ball additional mainly with coal pulverizer electric current for reference to foundation, taking periodically to install major diameter abrading-ball side additional
Formula (φ 60mm), is easily caused coal pulverizer inner barrel different-diameter abrading-ball ratio unreasonable, causes coal cinder, the crushing force of coal grain
Have a surplus, and grinding forces is not enough；Owing to, under this working condition, the DYNAMIC DISTRIBUTION of Different Diameter abrading-ball is unfavorable for high efficiency grinding；Plus coal
Matter normal off-design coal is relatively big, makes unit power consumption of coal pulverizing raise.
The present invention designs various ball mills grating technical scheme, and considers and analyze single hop or multistage operation area
Abrading-ball stream kinetic characteristic, forms with level etc. by the performance assessment criteria such as energy consumption, abrasion, flour extraction, production cost and influence factor
Skill element experimental system use method for visualizing to carry out adding up, calculate, arrange and optimization draws optimum accumulation of mill-balls technique；
And apply method for visualizing and collection of illustrative plates, in conjunction with on-the-spot actual, formulate the grading distribution scheme of the most preferably different sphere diameter abrading-ball of abrading-ball, it is ensured that ball
In grinding machine, abrading-ball grating can be in engineering state optimum gradation level stable, reliably.
Now it is applied to the abrading-ball grating technology of certain power plant 300MW unit abrading-ball coal pulverizer and selected most economical abrading-ball
Organization design and control technology as case content and introduce its operation and using effect.
Method for visualizing refers to: at contrived experiment condition, analysis experimental result or even optimizing factors from experimental result
In horizontal process, draw 2 dimension or 3-dimensional graphs of a relation (also referred to as phasor) between empirical factor and experimental index by science, from right
The comprehensive analysis of several graphs of a relation, thus obtain " design of experiment condition ", " analysis of experimental result " and " water of empirical factor
Flat optimization " purpose.(consider and analyze single hop or multistage operation area abrading-ball by designing various ball mills grating technical schemes
Stream kinetic characteristic；To the skill being made up of with level etc. the performance assessment criteria such as energy consumption, abrasion, flour extraction, production cost and influence factor
Art element experimental system uses method for visualizing to carry out adding up, calculate, arrange and optimization draws optimum accumulation of mill-balls technique.
Experimental design (multifactor&multilevel visualized Design, m2VD): by experiment of many factor
Design is decomposed into multiple 2 factor level arrangements, is constantly regulated experimental level by drawing method so that in each 2 factor Spaces
Experimental point is the distribution of approaches uniformity.
Interpretation (multifactor&multilevel&multitarget visualized Analysis,
m3VA): using two factors to be analyzed as transverse and longitudinal coordinate, using experimental index as waiting characteristic evidences, 2.5 dimension figures are made.Logical
Cross and figure is analyzed to obtain the master factor affecting laws to index.The situation of multiple factors is decomposed into several 2.5 dimension graphic operations.
Experimental result optimization (multifactor&multilevel&multitarget visualized Optimize,
m3VO): draw several 2.5 dimension figures above-mentioned by superposition, the factor numerical range of the indication ranges such as searching is concrete, thus reach to seek
Seek the purpose of excellent experimental result optimization experiment.
A kind of method for visualizing quantifying grating technology for ball mills, comprises the steps:
(1) ball mill is rationally selected according to the demand of known abrasives characteristic and production capacity；First main from tripartite
The further distinct ball mill actual motion characteristic in face and production capacity:
1) ball mill operation system；
2) ball mill production capacity and economic performance assessment criteria；
3) workpiece material, structure, the form etc. such as abrasive nature and the various liner plate of ball mill, end plate, dividing plate are to abrading-ball grating
The impact (invalid abrading-ball, little metal derby) of performance assessment criteria.
4) ball mill grating cast grinding ball type is determined:
Coal pulverizer (dry grinding, wet grinding)；
Metal ore mill (ferrous metal ore, nonferrous metals ore)；
Nonmetal ore mill (nonmetal soft ore deposit, nonmetal hard ore deposit).
(2) by operating condition and service life need select armoured material；
(3) study under determining the known conditions such as armoured material, abrasives, ensureing production capacity, quality (main fineness ratio
System) on the premise of, using lowest production cost as the criterion of optimum process scheme；Abrading-ball useful load determines power consumption；Abrading-ball
(mainly can be determined by composition and Technology for Heating Processing) and abrading-ball grating effect determines abrasion；Ball milling mineral production cost mainly by
Power consumption, abrasion and different materials abrading-ball purchasing price collectively form analysis, calculating, checking system.
It is generally divided into three classes: the industry such as thermal power generation, mine, cement, its general character by the use characteristic of abrading-ball application
Research and development element:
1) grating performance assessment criteria: the abrasion of energy consumption of mill, abrading-ball, flour extraction and production cost reduction rate；
2) grading work condition: mineral nitrogen abrasive hardness, the initial lumpiness of mineral nitrogen abrasive material (granule), working environment parameter (soda acid
Degree, humidity, mass flow-rate, flow velocity etc.), grinding machine equipment parameter (mill diameter, rotating speed, length etc.)；
3) influence factor's (taking preferable grinding machine pack completeness): armoured material, abrasives, abrading-ball useful load, abrading-ball sphere diameter are joined
Ratio, abrading-ball alloying component and heat treating regime；
4) (on the premise of realizing normal flour extraction, obtained lowest production cost is optimal mill to abrading-ball useful load (t)
Ball useful load, this index mainly determines power consumption, in the range from 30-55t)；
5) use method for visualizing after determining 4 grating performance assessment criteria, list the impact affecting 4 grating performance assessment criteria
Factor also lists its horizontal extent according to working experience.
(4) as method for visualizing determine in the horizontal extent drafted in described step (3) can be described in most effective reflection
The horizontal experimental point of symmetric form of performance assessment criteria excursion；
(5) by certain of 4 kinds of sphere diameters be abrading-ball according to a certain percentage with non-integral multiple design, and combine described step (4)
The horizontal experimental point of symmetric form gone out is tested, and is using 4 kinds of balls of chromium material by drawing the visual analyzing of experimental result
The grading distribution scheme of the footpath abrading-ball optimal different sphere diameter abrading-balls under the conditions of optimal abrading-ball useful load and most economical Material quality of grinding balls, described
Optimal abrading-ball useful load is on the premise of realizing normal flour extraction, and obtained lowest production cost is that optimal abrading-ball loads
Amount.
Described method for visualizing be specially the design of experiment condition, the analysis of experimental result so from experimental result excellent
During changing influence factor's horizontal extent, draw the 2.5D between experimental factors and grating performance assessment criteria by science and close
System's figure, from the comprehensive analysis to several graphs of a relation, thus obtains " design of experiment condition ", " analysis of experimental result " and " in fact
Test optimization influence factor's horizontal extent in result " purpose, and in experimental data six influence factors and described four gratings are examined
Core index carries out the visual analysis method of " influence factor → grating performance assessment criteria maps ".Being designed as of described experiment condition will
Multiple influence factor's experimental designs are decomposed into multiple two factor level arrangements, are constantly regulated experimental level by drawing method, make
It must be the distribution of approaches uniformity at each two factor Spaces experimental points.Analyzing as with to be analyzed two of described experimental result
Individual influence factor as transverse and longitudinal coordinate, to test grating performance assessment criteria index as waiting characteristic evidences, makes 2.5 dimension figures, passes through
Influence factor's affecting laws to grating performance assessment criteria is learnt in analysis to figure, and the situation of multiple influence factors is decomposed into several
2.5 dimension graphic operations；Optimizing influence factor's horizontal extent in experimental result is to draw several 2.5 dimension figures described by superposition, finds
Influence factor's numerical range of concrete grating performance assessment criteria scope, thus reach to seek the mesh of excellent experimental result optimization experiment
's.
" design of experiment condition "
Now by the abrading-ball of 4 kinds of sphere diameters according to a certain percentage with non-integral multiple design, and combine symmetric form level experiment click on
Row experiment, is using 4 kinds of sphere diameter abrading-balls of certain material to fill at optimal abrading-ball by drawing the visual analyzing of experimental result
The grading distribution scheme of the optimal Different Diameter abrading-ball under the conditions of carrying capacity and most economical chromium system Material quality of grinding balls；
1) sphere diameter proportioning (mm) is as follows:
M1 Φ 60: Φ 50: Φ 40: Φ 30=9.96:37.90:37.53:14.61
M2 Φ 60: Φ 50: Φ 40: Φ 30=11.65:50.11:28.17:10.07
M3 Φ 60: Φ 50: Φ 40: Φ 30=13.65:37.37:41.14:7.84
M4 Φ 60: Φ 50: Φ 40: Φ 30=14.90:47.44:32.88:4.78
M5 Φ 60: Φ 50: Φ 40: Φ 30=16.65:35.60:24.78:22.97
M6 Φ 60: Φ 50: Φ 40: Φ 30=18.79:45.91:28.00:7.30
M7 Φ 60: Φ 50: Φ 40: Φ 30=19.93:34.26:29.73:16.08
M8 Φ 60: Φ 50: Φ 40: Φ 30=21.46:44.27:33.00:1.27
M9 Φ 60: Φ 50: Φ 40: Φ 30=30.00:32.29:35.53:2.18
M10 Φ 60: Φ 50: Φ 40: Φ 30=25.72:42.85:27.23:4.20
M11 Φ 60: Φ 50: Φ 40: Φ 30=27.24:29.62:39.72:3.42
M12 Φ 60: Φ 50: Φ 40: Φ 30=28.00:39.45:31.45:1.10
M13 Φ 60: Φ 50: Φ 40: Φ 30=27.33:48.50:18.00:6.17
2) chromium system abrading-ball chromium element variation (low chromium → middle chromium → Gao Ge → superelevation chromium, i.e. 2%Cr-20%Cr), thus group
Become 4 targets (1. power consumption (kW h/t)；2. abrasion (g/t)；3. flour extraction (t/h)；4. the rate of cost reduction (%)), 6 factors (protect
First material, abrasives, abrading-ball useful load, sphere diameter proportioning, abrading-ball alloying component and heat treating regime), 13 horizontal experimental points
The visual design, analysis and optimization system.
To 4 grating performance assessment criteria (energy consumption, abrasion, flour extraction, production cost), 6 grating influence factors and respectively taking
In the experimental system of 13 level point compositions, method for visualizing is used not only to obtain mill with few experiment number (13 groups times)
Ball optimum gradation scheme, and obtain the optimal abrading-ball useful load of ball milling coal dust least cost and most economical Material quality of grinding balls；Sphere diameter
The chromium system abrading-ball of proportioning and DIFFERENT Cr content mainly determines abrasion.
" analysis of experimental result " and " experimental result optimizes influence factor's horizontal extent "
The total useful load of abrading-ball mainly determines to produce the power consumption of ton coal dust；Fig. 1-Fig. 4 is to investigate the total useful load of abrading-ball at Φ
As a example by power consumption is affected by 60mm abrading-ball difference additional proportion, show and investigate it at 3 kinds of abrading-balls such as Φ 50mm, Φ 40mm, Φ 30mm
The method that power consumption is affected by different additional proportions.From Fig. 2 on 2.5D figure and combine Fig. 1 and observe that total ball load is at 60mm abrading-ball
During consumption difference, the impact on power consumption all changes in mild nonlinear.Observe along with the increase of total ball load from Fig. 3 middle section figure
Power consumption is to increase, but to occupy ratio different so cross section is not a curve due to 60mm sphere diameter abrading-ball, but a face.
Fig. 5-Fig. 8 is to investigate impact and the total ball load on power consumption during Cr content difference in abrading-ball of the total useful load of abrading-ball
When in abrading-ball, Cr content is 4% on the impact of power consumption as a example by, abrading-ball total useful load in abrading-ball Cr content be can be observed different
Time on the impact of power consumption all in nonlinear change.From Fig. 8, total ball load Cr content in abrading-ball is to observe along with always when 4%
The increase power consumption of ball load is about one curve fluctuated.
Fig. 9 affects schematic diagram with 60mm diameter abrading-ball installation rate to wear away to investigate abrading-ball total installed capacity weight, can in figure
See that the installation rate of 60mm diameter abrading-ball wears away line with waiting of the total useful load of abrading-ball, optimize the installation rate of 60mm diameter abrading-ball further
The corresponding interval of useful load total with abrading-ball.
Figure 10 is to investigate total ball load power consumption optimization as 20kWh/t when four kinds of different-diameter abrading-balls are different from Cr content
As a example by interval, show and investigate total ball load time power consumption is other different value when four kinds of different-diameter abrading-balls are different from Cr content
Optimize interval.Visible in conjunction with Fig. 9, power consumption to be maintained below the energy consumption level of 20kWh/t, total ball load should control 35t with
Under, now 60mm diameter ball laod ratio example is controlled between 10～30%, 50mm diameter ball laod ratio example is controlled 30～50%
Between, 40mm diameter ball laod ratio example is controlled between 20～40%, 30mm diameter ball laod ratio example is controlled between 1～20%, Cr
Content control between 2～20%.This is simply in view of the optimum results of power consumption index, analyze comprehensively it is also contemplated that abrasion,
Flour extraction and cost reduce index.
Figure 11 with investigate total ball load when four kinds of different-diameter abrading-balls are different from Cr content, the rate of cost reduction is 75% time
As a example by optimizing interval, show that investigating total ball load rate of cost reduction when four kinds of different-diameter abrading-balls are different from Cr content is other
Optimization during different value is interval.Should control at below 30t in total ball load in conjunction with Figure 10 is visible, it is possible to reach least cost.
All sphere diameter abrading-ball amount ranges and containing Cr measure further severization, 60mm diameter ball laod ratio example is controlled 11%-24% it
Between, 50mm diameter ball laod ratio example is controlled between 31%-44%, 40mm diameter ball laod ratio example is controlled between 19%-34%,
But controlling 30mm diameter ball laod ratio example between 4%-15%, the content of Cr controls between 3%-14%.Total and Analysis of Electricity is tied
Really trend is identical.The rate of cost reduction improves again, has not had publicly-owned interval.
In like manner, also may utilize method for visualizing and carry out each factor to abrasion, to object effects trend and degree such as flour extractions
Research.
Table 1 is visualization optimum results system, as shown in table 1, by the influence factor to four kinds of different sphere diameter abrading-balls
Visual analyzing, optimization to the mapping of grating performance assessment criteria, considers further that some technological factor, it is determined that M2 group (Φ 60: Φ
50: Φ 40: Φ 30=11.65:50.11:28.17:10.07) can be as optimum gradation scheme.So that it is determined that abrading-ball most preferably fills
Carrying capacity is: 36.23t；Most economical preferred Material quality of grinding balls is: the high-Cr grinding balls containing about Cr10.86%.It is achieved thereby that to certain
It is Material quality of grinding balls with grating performance assessment criteria as touchstone, with the influence factor of performance assessment criteria as experimental variable, finally realizes
Using chromium material 4 kinds of sphere diameter abrading-balls optimal different sphere diameters under the conditions of optimal abrading-ball useful load and most economical Material quality of grinding balls
The visualized operation of the grading distribution scheme of abrading-ball.
Table 1 visualizes optimum results system
The present invention in ball mill running, ball mill whether in single hop or multistage working area all can set abrasive material and
Under conditions of medium forms preferable pack completeness, by the determination of the grading distribution scheme of optimal different sphere diameter abrading-balls can be made high-quality abrading-ball
Adapt to different operating environment, give full play to its excellent serviceability, embody the most energy-saving and cost-reducing and reduce product life
Produce the effect of cost；The present invention designs various ball mills grating technical scheme, and considers and analyze single hop or multistage
Operation area abrading-ball stream kinetic characteristic, to by the performance assessment criteria such as energy consumption, abrasion, flour extraction, production cost and influence factor and level
Use method for visualizing to carry out adding up Deng the skill element experimental system of composition, calculate, arrange and optimization draws the optimal level of abrading-ball
Allotment of labor's skill；And apply method for visualizing and collection of illustrative plates, in conjunction with on-the-spot actual, formulate the level formula of the most preferably different sphere diameter abrading-ball of abrading-ball
Case, it is ensured that in ball mill, abrading-ball grating can be in engineering state optimum gradation level stable, reliably；Break through due to by abrading-ball material
The multi-factor restrict such as material, ball milling equipment, material characteristic, working environment and interactive effects and make to study the most both at home and abroad abrading-ball
Grating problem is all stuck in the qualitative investigation stage, breaks through using abrading-ball generation save energy and reduce the cost and reduce the effect of production cost
The most notable, unstable, add undue dependence experience, causing cannot " bottleneck " of popularization and application.
As known by the technical knowledge, the present invention can be by other essence without departing from its spirit or the embodiment party of essential feature
Case realizes.Therefore, embodiment disclosed above, for each side, all it is merely illustrative, is not only.Institute
The change within the scope of the present invention or within being equal to the scope of the present invention is had all to be comprised by the present invention.
Claims (8)
1. the method for visualizing quantifying grating technology for ball-grinding machine abrading-ball, it is characterised in that comprise the steps:
(1) ball-grinding machine is rationally selected according to the demand of known abrasives characteristic and production capacity；
(2) by operating condition and service life need select armoured material；
(3) use method for visualizing after determining N number of grating performance assessment criteria, list affect N number of grating performance assessment criteria affect because of
Element also lists its horizontal extent according to working experience, and described N is integer；
(4) determining in the horizontal extent drafted in described step (3) by method for visualizing can the described examination of most effective reflection
The horizontal experimental point of symmetric form of index excursion；
(5) by certain of N kind sphere diameter be abrading-ball according to a certain percentage with non-integral multiple design, and combine what described step (4) drew
The horizontal experimental point of symmetric form is tested, and is using certain material N kind sphere diameter by drawing the visual analyzing of experimental result
The grading distribution scheme of the abrading-ball optimal different sphere diameter abrading-balls under the conditions of optimal abrading-ball useful load and most economical Material quality of grinding balls, described N
For integer.
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 1, its feature
Being, in described step (1), ball-grinding machine selects coal pulverizer under the conditions of requiring dry grinding or wet grinding, when abrasive material is ferrous metal ore
Or during nonferrous metals ore, select metal ore mill, mill is selected when abrasive material is nonmetal soft ore deposit or nonmetal hard ore deposit is nonmetal
Ore deposit machine；In described step (5), the sphere diameter of abrading-ball is specially four kinds.
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 1, its feature
Being, as preferably, described in step (3), grating performance assessment criteria is four, and four grating performance assessment criteria are specially grinding machine energy
The abrasion of consumption, abrading-ball, flour extraction and production cost reduction rate；Described influence factor is specially six, and described six influence factors divide
Wei armoured material, abrasives, abrading-ball useful load, sphere diameter proportioning, abrading-ball alloying component and heat treating regime.
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 3, its feature
Being, method for visualizing described in step (3)-(5) is in the design of experiment condition, the analysis of experimental result or even to tie from experiment
During optimizing influence factor's horizontal extent in Guo, drawn between experimental factors and grating performance assessment criteria by science
2.5D graph of a relation, from the comprehensive analysis to several graphs of a relation, thus obtains " design of experiment condition ", " analysis of experimental result "
" optimization influence factor's horizontal extent in experimental result " purpose, and in experimental data six influence factors and described four levels
Join performance assessment criteria and carry out the visual analysis method of " influence factor → grating performance assessment criteria maps ".
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 4, its feature
Being, multiple influence factor's experimental designs are decomposed into multiple two factor levels by being designed as of experiment condition described in step (4)
Arrange, constantly regulated experimental level by drawing method so that be the distribution of approaches uniformity at each two factor Spaces experimental points
State.
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 4, its feature
Being, analyzing of experimental result described in step (4) is using two influence factors to be analyzed as transverse and longitudinal coordinate, to test level
Join performance assessment criteria index as wait characteristic evidences, make 2.5 dimension figure, by the analysis of figure is learnt influence factor to grating examine
The affecting laws of index, the situation of multiple influence factors is decomposed into several 2.5 dimension graphic operations；Experimental result optimizes influence factor
Horizontal extent is to draw several 2.5 dimension figures described by superposition, finds influence factor's numerical value of concrete grating performance assessment criteria scope
Scope, thus reach to seek the purpose of excellent experimental result optimization experiment.
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 1, its feature
Being, optimal abrading-ball useful load described in step (5) is on the premise of realizing normal flour extraction, and obtained lowest manufactured becomes
This is optimal abrading-ball useful load.
A kind of method for visualizing quantifying grating technology for ball-grinding machine abrading-ball the most according to claim 1, its feature
Being, as preferably, when ball-grinding machine is coal pulverizer, most economical Material quality of grinding balls is chromium system abrading-ball, and described chromium content is
10.86%, determine that optimal four kinds of different sphere diameter abrading-ball grading distribution schemes are Φ 60: Φ 50: Φ 40: Φ 30=11.65:50.11:
28.17:10.07, it is determined that the optimal useful load of abrading-ball is 36.23t.
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| CN108654763A (en) * | 2017-04-01 | 2018-10-16 | 北京环磨科技有限公司 | A kind of semi-autogenous mill rationally adds method-dynamic ball adding method of steel ball |
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| CN115845991A (en) * | 2022-12-06 | 2023-03-28 | 昆明理工大学 | Method for determining steel ball grading by predicting semi-autogenous grinding hard stone crushing effect based on Tavares crushing model |
| CN115845991B (en) * | 2022-12-06 | 2024-06-11 | 昆明理工大学 | Method for predicting semi-self-grinding stubborn stone crushing effect and determining steel ball grading based on Tavares crushing model |
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