CN110314741A - The method of precise measurement globe mill medium pack completeness - Google Patents
The method of precise measurement globe mill medium pack completeness Download PDFInfo
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- CN110314741A CN110314741A CN201810274499.3A CN201810274499A CN110314741A CN 110314741 A CN110314741 A CN 110314741A CN 201810274499 A CN201810274499 A CN 201810274499A CN 110314741 A CN110314741 A CN 110314741A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 238000000227 grinding Methods 0.000 claims abstract description 111
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000003801 milling Methods 0.000 claims abstract description 12
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 11
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 11
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction 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
- 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
-
- 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
- B02C17/18—Details
- B02C17/1805—Monitoring devices for tumbling mills
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention relates to a kind of method of precise measurement globe mill medium pack completeness, the method is as follows: 1) making grinding machine internal diameter and milling medium face clear height measuring tool；2) use measuring tool, measure the effective internal diameter R (cm) of grinding machine and steel ball surface to ball mill barrel highest point distance H (cm)；3) according to the state and trigonometric function knowledge of static grinding machine ball lotus, using the area S of fan-shaped OCEFanSubtract the area S of triangle OCE△Calculate grinding machine cross section steel ball occupied area, 4) grinding machine dischargeable capacity is calculated according to cylindrical body formula, steel ball heap volume is obtained multiplied by grinding machine length according to shaded area, steel ball heap volume is Method of Medium Charge Ratio in Grinder divided by grinding machine dischargeable capacity, grinding medium filling ratio corresponding to the distance H (cm) of the effective internal diameter R (cm) of different grinding machines and steel ball surface to ball mill barrel highest point is according to said method calculated, the grinding medium filling ratio table of comparisons of different size grinding machine is produced.
Description
Technical field
The present invention relates to a kind of measurement methods, and in particular to the method for precise measurement globe mill medium pack completeness belongs to mill
Mine processing technology field.
Background technique
Ore grinding is last one of operation that selected preceding mineral aggregate prepares, it is completed by milling medium.There is medium
In ore grinding, the size of Method of Medium Charge Ratio in Grinder is an important factor for influencing grinding machine grinding efficiency and ore milling product particle property.Mesh
It is preceding dressing plant production on, measure the grinding medium filling ratio of grinding machineUsually using the static grinding machine ball lotus surface of measurement to grinding machine cylinder
The size of the apogee distance H of body is estimated.Attached drawing 1 is grinding machine cross section, and small circle part indicates ball lotus institute when grinding machine is static
Area is accounted for, D is grinding machine interior diameter, measures ball lotus surface C BE to the apogee distance H of grinding mill barrel, then ball lotus surface to grinding machine
The distance b at center is found out by figure are as follows:
The common empirical estimating formula of Method of Medium Charge Ratio in Grinder is:
Since steel ball surface is non-fully-flattened, the first highest point of ball lotus surface C BE to grinding mill barrel when grinding machine is static
Distance H can not survey standard, and it is estimation formula that secondly above-mentioned Method of Medium Charge Ratio in Grinder, which calculates empirical equation itself, cannot accurately calculate mill
Machine grinding medium filling ratio, b is bigger, and error calculated is bigger.And the precise measurement of other document introductions calculates Method of Medium Charge Ratio in Grinder
Method is very complicated, often applies to calculus and goes to calculate, and inconvenience carries out calculating utilization in production scene worker.Exactly producing
Live Method of Medium Charge Ratio in Grinder measurement is inaccurate, so that the grinding medium filling ratio of grinding machine is not in optimum working parameter, to cause
Grinding machine productivity reduces and grinding efficiency is bad, and therefore, a kind of new scheme of urgent need solves the technical problem.
Summary of the invention
The present invention exactly for the technical problems in the prior art, provides a kind of precise measurement globe mill medium filling
The method of rate, this method is according to the state of static grinding machine ball lotus, and steel ball heap volume is accurate from grinding machine dischargeable capacity and grinding machine
Measurement is set out, and proposes Method of Medium Charge Ratio in GrinderPrecise measurement formula, provide a kind of filling of precise measurement globe mill medium
The method of rate makes Method of Medium Charge Ratio in Grinder be chronically at optimum value, and then when improving ore grinding platform and grinding efficiency, reduces ore grinding steel
Consumption, it is ensured that overflow granularity is qualified, has application value in similar mine.
To achieve the goals above, technical scheme is as follows, a kind of precise measurement globe mill medium pack completeness
Method, which is characterized in that the method is as follows:
1) grinding machine internal diameter and milling medium face clear height measuring tool are made,
2) simple and convenient and accurately measure the effective internal diameter R (cm) of grinding machine and steel ball table with the measuring tool specially made
Distance H (cm) of the face to ball mill barrel highest point；
3) according to the state and trigonometric function knowledge of static grinding machine ball lotus, using the area S of fan-shaped OCEFanSubtract triangle
The area S of OCE△, grinding machine cross section steel ball occupied area is calculated,
4) grinding machine dischargeable capacity is calculated according to cylindrical body formula, obtains steel ball heap multiplied by grinding machine length according to shaded area
Volume, steel ball heap volume are Method of Medium Charge Ratio in Grinder divided by grinding machine dischargeable capacity, and it is effective according to said method to calculate different grinding machines
Grinding medium filling ratio corresponding to the distance H (cm) of internal diameter R (cm) and steel ball surface to ball mill barrel highest point, produces difference
The grinding medium filling ratio table of comparisons of specification grinding machine.
In actual production, as long as measuring the effective internal diameter R (cm) of grinding machine and steel ball surface to ball mill barrel highest point
Distance H (cm), Method of Medium Charge Ratio in Grinder can quickly be obtained by tabling look-up.
The present invention provides the tool and method of a kind of precise measurement globe mill medium pack completeness, keeps Method of Medium Charge Ratio in Grinder long
Phase is in optimum value, and then consumes when raising ore grinding platform with grinding efficiency, reduction ore grinding steel, it is ensured that grinding fineness is qualified, has heavy
The theory and practice meaning wanted has application value in similar mine.
As an improvement of the present invention, production grinding machine internal diameter and milling medium face clear height measuring tool in the step 1)
That is the band telescopic T-square of magnetic patch, it is specific as follows；AB sections vertical with CD sections, and CD sections scalable, and long 300cm has scale, single
Position cm；AB sections of long 10-30cm are approximately equal to 2-3 steel ball size, cause to miss to avoid causing measurement terminals to be inserted between two steel balls
Difference, width 1-2cm；Magnetic patch is inlayed in both ends, is convenient for measuring tool and is inhaled on cylinder lining plate of ball mill surface and milling medium steel ball table
Face, it is ensured that measurement data is accurate.
Compared with the existing technology, the invention has the advantages that, this method makes worker can essence in grinding machine production scene
True rapid survey and control Method of Medium Charge Ratio in Grinder, make grinding process be in optimum working parameter, improve grinding machine productivity and mill
Mine fineness qualification rate reduces time in grinding production cost using the measuring tool specially manufactured and required data is measured, according to offer
Grinding medium filling ratio Method for Accurate Calculation produces the different model Method of Medium Charge Ratio in Grinder table of comparisons, finds corresponding from the table of comparisons
Grinding medium filling ratio, improve the working efficiency of worker, alleviate the labor intensity of worker, it is ensured that mill steel ball grinding medium filling ratio
Accuracy, prevented ball mill " rise tripe " phenomenon, reduced the failure rate of ball mill.To realize grinding machine production capacity and
Best match is accomplished in ball load, reaches optimal material ball ratio, improves steel ball with to the effective of grind materials and impacts and grind probability, mill
2-10 tons can be averagely improved when board, reduce steel ball and liner plate consumption, solve the ball mill pack completeness often occurred in production
Measurement is inaccurate and fluctuates big production problem, maintains the stabilization of ball mill steel ball pack completeness and steel ball particle property, ball mill
Grinding efficiency have and be obviously improved, it is ensured that can quickly be increased to normal level when the ball milling board of new rebush plate and guarantee ore grinding
Fineness is qualified.
Detailed description of the invention
Fig. 1 is grinding machine cross-sectional view and cross section shaded area Traditional calculating methods；
Fig. 2 is the grinding machine internal diameter specially manufactured and milling medium face clear height measuring tool；
Fig. 3 is grinding machine cross-sectional view and cross section shaded area this patent calculation method.
Specific embodiment:
In order to deepen the understanding of the present invention, the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1: referring to Fig. 1-Fig. 3, a kind of method of precise measurement globe mill medium pack completeness, the method is as follows:
1) grinding machine internal diameter and milling medium face clear height measuring tool are made,
2) simple and convenient and accurately measure the effective internal diameter R (cm) of grinding machine and steel ball table with the measuring tool specially made
Distance H (cm) of the face to ball mill barrel highest point；
3) according to the state and trigonometric function knowledge of static grinding machine ball lotus, using the area S of fan-shaped OCEFanSubtract triangle
The area S of OCE△, grinding machine cross section steel ball occupied area is calculated, it is specific to calculate as shown in attached drawing 3.
4) grinding machine dischargeable capacity is calculated according to cylindrical body formula, obtains steel ball heap multiplied by grinding machine length according to shaded area
Volume, steel ball heap volume are Method of Medium Charge Ratio in Grinder divided by grinding machine dischargeable capacity, and it is effective according to said method to calculate different grinding machines
Grinding medium filling ratio corresponding to the distance H (cm) of internal diameter R (cm) and steel ball surface to ball mill barrel highest point, produces difference
The grinding medium filling ratio table of comparisons of specification grinding machine.It sees attached list shown in 1.
1, in actual production, as long as measuring the effective internal diameter R (cm) of grinding machine and steel ball surface to ball mill barrel highest point
Distance H (cm), Method of Medium Charge Ratio in Grinder can quickly be obtained by tabling look-up.
2, the present invention provides the tool and method of a kind of precise measurement globe mill medium pack completeness, makes Method of Medium Charge Ratio in Grinder
It is consumed when being chronically at optimum value, and then improving ore grinding platform with grinding efficiency, reduction ore grinding steel, it is ensured that grinding fineness is qualified, has
Important theory and practice meaning has application value in similar mine.
Production grinding machine internal diameter and milling medium face clear height measuring tool are the band telescopic T-shaped of magnetic patch in the step 1)
Ruler, it is specific as follows, as shown in attached drawing 2；AB sections vertical with CD sections, and CD sections scalable, and long 300cm has scale, unit cm；AB sections
Long 10-30cm is approximately equal to 2-3 steel ball size, causes error, width 1- to avoid causing measurement terminals to be inserted between two steel balls
2cm；Magnetic patch is inlayed in both ends, is convenient for measuring tool and is inhaled on cylinder lining plate of ball mill surface and milling medium steel ball surface, it is ensured that
Measurement data is accurate.
With reference to the accompanying drawing, the quick precise measurement calculation method of the Method of Medium Charge Ratio in Grinder proposed to this programme is said
Bright, when calculating grinding machine cross section steel ball occupied area, creatively proposition subtracts triangle area with sectorial area.Firstly,
Grinding machine ball lotus surface utilizes anticosine triangle letter to the apogee distance H and grinding machine interior diameter D of grinding mill barrel when measuring static
Number calculates angle theta,The length of semifocal chord CB, CB=Rsin θ are calculated with sine trigonometric function again；Finally
Calculate the area of fan-shaped OCEWith the area S=Rsin θ (H-R) of △ OCE.In this way, the difference between the two is just grinding machine
Section steel ball occupied area, then calculate steel ball heap volume in grinding machine dischargeable capacity and grinding machine, so that it may show that medium of grinder fills
Rate exact value.
The table wet type grate ball mill steel ball pack completeness table of comparisons of 1 MQG2700 × 3600
| R\H | 133 | 135 | 137 | 139 | 141 | 143 | 145 | 147 | 149 | 151 | 153 | 155 | 157 | 159 |
| 123 | 44.8 | 43.8 | 42.8 | 41.7 | 40.7 | 39.7 | 38.7 | 37.7 | 36.6 | 35.6 | 34.6 | 33.6 | 32.6 | 31.6 |
| 124 | 45.4 | 44.4 | 43.3 | 42.3 | 41.3 | 40.3 | 39.3 | 38.3 | 37.3 | 36.2 | 35.2 | 34.3 | 33.3 | 32.3 |
| 125 | 45.9 | 44.9 | 43.9 | 42.9 | 41.9 | 40.9 | 39.9 | 38.9 | 37.9 | 36.9 | 35.9 | 34.9 | 33.9 | 32.9 |
| 126 | 46.5 | 45.5 | 44.4 | 43.4 | 42.4 | 41.4 | 40.4 | 39.4 | 38.4 | 37.5 | 36.5 | 35.5 | 34.5 | 33.5 |
| 127 | 47.0 | 46.0 | 45.0 | 44.0 | 43.0 | 42.0 | 41.0 | 40.0 | 39.0 | 38.0 | 37.1 | 36.1 | 35.1 | 34.1 |
| 128 | 47.5 | 46.5 | 45.5 | 44.5 | 43.5 | 42.6 | 41.6 | 40.6 | 39.6 | 38.6 | 37.6 | 36.7 | 35.7 | 34.7 |
| 129 | 48.0 | 47.0 | 46.1 | 45.1 | 44.1 | 43.1 | 42.1 | 41.1 | 40.2 | 39.2 | 38.2 | 37.3 | 36.3 | 35.3 |
| 130 | 48.5 | 47.6 | 46.6 | 45.6 | 44.6 | 43.6 | 42.7 | 41.7 | 40.7 | 39.8 | 38.8 | 37.8 | 36.9 | 35.9 |
Application Example:
After the experiment of Bao Wu group Mei Gang company Mining Industry Subsidiary Company, solves the ball mill pack completeness often occurred in production
Measurement is inaccurate and fluctuates big production problem, maintains the stabilization of ball mill steel ball pack completeness and steel ball particle property, ball mill
Grinding efficiency have and be obviously improved, when improving ore grinding platform and ball mill seldom occurs " rise tripe " phenomenon.Especially replaced newly
Effect is particularly significant after liner plate, and originally the steel ball poured out all is added after ball mill replacement liner plate, mill steel ball is caused to fill
It is higher to fill out rate, " rise tripe " phenomenon occurs in grinding machine, and the wet type grate ball mill of MQG2700 × 3600 treating capacity will be at 15 days or more very
It can be only achieved 70t/h to 1 month or more；After program tip-in, realize that the production capacity of grinding machine and ball load are accomplished most preferably
Matching, reaches optimal material ball ratio, the treating capacity of ball mill within 2 days even on the day of can quickly be increased to 70t/h or more
And guarantee grinding fineness qualification.
After Bao Wu group Mei Gang company Mining Industry Subsidiary Company uses this programme, reduce steel ball and steel ball, steel ball and liner plate
Impact improves steel ball with to the effective of grind materials and impacts and grind probability, reduces steel ball and liner plate consumption, improve the mill of grinding machine
Mine effect and productivity, under the conditions of grinding fineness is comparable, when wet type grate ball mill ore grinding platform of MQG2700 × 3600, is mentioned
The high secondary grading overflow product quality ratio application 2.9 tons, finally obtained is preceding more excellent.
It should be noted that above-described embodiment, is not intended to limit the scope of protection of the present invention, in above-mentioned technical proposal
On the basis of made equivalents or substitution each fall within the range that the claims in the present invention are protected.
Claims (3)
1. a kind of method of precise measurement globe mill medium pack completeness, which is characterized in that the method is as follows:
1) grinding machine internal diameter and milling medium face clear height measuring tool are made；
2) simple and convenient and accurately measure the effective internal diameter R (cm) of grinding machine and steel ball surface arrives with the measuring tool specially made
The distance H (cm) of ball mill barrel highest point；
3) according to the state and trigonometric function knowledge of static grinding machine ball lotus, using the area S of fan-shaped OCEFanSubtract triangle OCE's
Area S△, grinding machine cross section steel ball occupied area is calculated,
4) grinding machine dischargeable capacity is calculated according to cylindrical body formula, obtains steel ball heap body multiplied by grinding machine length according to shaded area
Product, steel ball heap volume is Method of Medium Charge Ratio in Grinder divided by grinding machine dischargeable capacity, and it is effectively interior according to said method to calculate different grinding machines
Grinding medium filling ratio corresponding to the distance H (cm) of diameter R (cm) and steel ball surface to ball mill barrel highest point, produces different rule
The grinding medium filling ratio table of comparisons of lattice grinding machine.
2. the method for precise measurement globe mill medium pack completeness according to claim 1, which is characterized in that the step 1)
Middle production grinding machine internal diameter and milling medium face clear height measuring tool are the band telescopic T-square of magnetic patch, specific as follows, AB section and
CD sections vertical, and CD sections scalable, and long 300cm has scale, unit cm.
3. the method for precise measurement globe mill medium pack completeness according to claim 1, which is characterized in that the step 1)
Middle 10-30cm AB sections long is approximately equal to 2-3 steel ball size, width 1-2cm；Magnetic patch is inlayed in both ends.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904625A (en) * | 2022-05-06 | 2022-08-16 | 金川集团股份有限公司 | Device and method for detecting filling rate of mill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1448304T3 (en) * | 2001-11-22 | 2008-05-26 | Magotteaux Int | A method for evaluating the degree of filling of a tubular rotary mill and apparatus therefor |
| CN103411646A (en) * | 2013-08-22 | 2013-11-27 | 北矿机电科技有限责任公司 | Method and system for detecting filling rate of steel balls in vertical mill machine |
| CN103721799A (en) * | 2013-12-13 | 2014-04-16 | 金川集团股份有限公司 | Determination method for filling ratio of grinding mills |
-
2018
- 2018-03-29 CN CN201810274499.3A patent/CN110314741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1448304T3 (en) * | 2001-11-22 | 2008-05-26 | Magotteaux Int | A method for evaluating the degree of filling of a tubular rotary mill and apparatus therefor |
| CN103411646A (en) * | 2013-08-22 | 2013-11-27 | 北矿机电科技有限责任公司 | Method and system for detecting filling rate of steel balls in vertical mill machine |
| CN103721799A (en) * | 2013-12-13 | 2014-04-16 | 金川集团股份有限公司 | Determination method for filling ratio of grinding mills |
Non-Patent Citations (1)
| Title |
|---|
| 周文涛等: "基于查表法的球磨机充填率计算公式研究", 《广西大学学报（自然科学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904625A (en) * | 2022-05-06 | 2022-08-16 | 金川集团股份有限公司 | Device and method for detecting filling rate of mill |
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Application publication date: 20191011 |