CN101036901A - Accurate method for improving production and saving energy by combining ball lLoad and addition in mill and forward leading of energy consumption - Google Patents
Accurate method for improving production and saving energy by combining ball lLoad and addition in mill and forward leading of energy consumption Download PDFInfo
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- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
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- 239000002245 particle Substances 0.000 claims description 25
- 239000004576 sand Substances 0.000 claims description 21
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Abstract
The invention relates to a yield increase energy saving method combining the ball mill precise remedy and the energy consumption shift forward, belonging to the ore breaking and the mill technical field. Adopting a section of grind, the mineral powder with the feeding size smaller than 12 mm is ground for one time to the size smaller than 0.15 mm, wherein the size smaller than 0.074 mm is 60-65% or adopting two sections of grind, first by a section grind, the mineral powder with the size smaller than 12 mm is ground to the largest size 2-3 mm, wherein the size smaller than 0.074 is 20-30%, then through the two sections of the grind, the mineral powder is ground to the size smaller than 0.15 mm, wherein the size smaller than 0.074 is larger than 70%. In order to reach the aim, the muck grain size with reduced muck procedure is adopted, namely reduces the feeding size of the grinding procedure, after entering the grinding procedure, the precise makeup remedy method is applied to grind, to make the yield increase energy saving method of the precise remedy method combining with the energy consumption shift forward, and make the muck procedure and the grinding procedure total energy consumption degree/ton reduce beyond 10%, and the ability of grinding advanced by 20-30%.
Description
One, technical field: ore reduction and levigate technical field
Two, background technology
Ore all will carry out muck and grinding operation before entering ore dressing, muck and grinding operation are a kind of high energy consumption operations, particularly grinding operation, and will exhaust 4～5% of annual generated energy every year.One of major reason that power consume is high is that the efficient of ore mill is too low.It is the problem that the ore grinding field studies for a long period of time that the production capacity of raising ball mill cuts down the consumption of energy.Adopting accurate method for ball load and addition is the Increasing Production and Energy Saving new method that the applicant proposed among the patent No. ZL200310111145.0 in 2003, and it is used in and not only effectively improves grinding efficiency in the grinding operation and also reduced energy consumption.The energy consumption reach is to add to tasks in the high muck stage of crushing efficiency, reduces garrulous ore granularity, increases muck section energy consumption, thereby for the volume increase of ore grinding stage creates conditions, makes the inefficient ore grinding stage reduce the task that grinds, and saves power consume.Because like this, the energy of many consumptions is much bigger on the energy loss-rate muck of saving on the ore grinding, and the fragmentation of ore and grinding system total energy consumption are descended.Have research to think abroad, garrulous ore granularity drops to 15mm when following, and the total energy consumption of muck and ore grinding is minimum.The energy consumption reach has theoretical foundation, also has practice effect to confirm, is the Increasing Production and Energy Saving technology that current ore dressing circle is generally acknowledged.But, the accurate loading and adding balls and the energy consumption of ball mill these the two kinds effective Increasing Production and Energy Saving methods that move forward are combined, the method that forms a kind of Increasing Production and Energy Saving better effects if does not but have.Importantly, the combination of these two kinds of Increasing Production and Energy Saving methods and non-mechanical superposition, but mutually promote and make the other side's Increasing Production and Energy Saving more remarkable effect mutually.
The patent No. that known applicant proposes is that the disclosed technical scheme that is useful for the ball mill accurate method for ball load and addition of primary grinding is among the ZL200310111145.0: measure and treat the uniaxial compressive strength σ of ore grinding stone, the compression strength σ of irregular nugget
0And the elastic modelling quantity of ore and Poisson's ratio; Grinding machine is newly carried out screen analysis to ore deposit and sand return, then by sand return than numerical value conversion newly to ore deposit and sand return, and merge and draw full feed preparation unit size and form, conversion did not determine that waiting to grind full feed preparation unit size forms after deduction did not need levigate thin rank again, at last, will treat that mill divides into groups by granule size to the ore deposit entirely; σ or σ according to ore
0Reach upper limit size and known condition of work and the parameter of grinding machine of respectively organizing ore particle, calculate with sphere diameter half theoretical formula and respectively organize the sphere diameter value that ore particle needs; Determine grinding machine ball laod ratio just by waiting to grind entirely productive rate and the required sphere diameter of respectively organizing ore particle to the ore deposit; Checking is the reasonability and the accuracy of dress ball just, and unreasonable and coarse ball of dress just returns the ratio that (4) step adjusted unreasonable part again; Draw grinding machine and just adorn the positive cumulative property curves of ball lotus granularity of ball, determine the positive cumulative property curves of ball lotus of adding ball, draw the ratio of various adding balls according to this curve with graphing method.
Top technical scheme explanation: muck operation granularity (being the feed preparation unit size in ore grinding stage) is thicker, and the steel ball size that grinding machine needs is bigger, because the feed preparation unit size wide ranges, the steel ball kind that needs also the more, join the ball difficulty, implement the accurate loading and adding balls difficulty, the effect after the enforcement is also not too remarkable.Otherwise muck operation granularity is thinner, implements accurate loading and adding balls more easily, implements later effect also significantly.
The Increasing Production and Energy Saving method of energy consumption reach has only solved and has reduced the problem of garrulous ore granularity, but the effect of Increasing Production and Energy Saving is not remarkable when only reducing garrulous ore granularity.The production practices of several big iron ores in China North China prove, the every reduction of garrulous ore granularity 1mm, the production capacity of grinding machine can only improve 1 ton/time about, the amplitude of raising is also with regard to 5～10%.If both reduced garrulous ore granularity, adopt accurate method for ball load and addition during ore grinding, the adjustment of ball size precision is caught up with on the ore grinding, and amount of increase in production can reach 20-30%, and muck and ore grinding total energy consumption degree/ton descends and surpasses 10%, unexpected Increasing Production and Energy Saving effect occurred.The test and the production practices in several big mines such as the big Red Hill copper mine in Yunnan prove that it is the most effectual way of Increasing Production and Energy Saving that accurate loading and adding balls combines with the energy consumption reach.
Three, summary of the invention
1. goal of the invention: the objective of the invention is to reduce the garrulous ore granularity of muck operation, increase this process energy consumption (energy consumption reach), promptly reduce the feed preparation unit size of Grinding procedure; After entering Grinding procedure, implement accurate method for ball load and addition and carry out ore grinding, accurate method for ball load and addition and energy consumption these the two kinds effective Increasing Production and Energy Saving methods that move forward are combined, make muck operation and Grinding procedure total energy consumption degree/ton fall surpass 10%, ability improves more than 30% during the ore grinding platform.For the Increasing Production and Energy Saving of ore dressing circle is opened up a valid approach.
2. technical scheme: the production capacity in ore dressing plant is actually by mill machine throughput and determines, desire improves the inevitable elder generation of the production capacity of selecting factory and begins to tap the latent power from grinding machine, and the production capacity of ball mill is always taped the latent power also and to be begun from the behavioral agent steel ball of ore grinding, optimize ball amount and size and proportioning, and then go to enlarge effect from the improvement of correlative factor.Concrete implementation step is:
(1), adopt primary grinding, feed preparation unit size (garrulous ore granularity of muck operation) once is milled to the granularity less than 0.15mm for the breeze of≤12mm, wherein less than the 60-65% that accounts for of 0.074mm, implementation step is:
1. at the uniaxial compressive strength σ (kg/cm that treats ore grinding stone mensuration ore
2), the compression strength σ of irregular nugget
0, the elastic modelling quantity of ore and Poisson's ratio;
2. grinding machine is newly carried out screen analysis respectively to ore deposit and these two kinds of mineral aggregates of sand return, convert newly to ore deposit and sand return than numerical value by sand return then, and merge to such an extent that full feed preparation unit size is formed, after deduction does not need levigate thin rank again, conversion determines that waiting to grind full feed preparation unit size forms, at last, will treat that mill is divided into 4～6 groups to the ore deposit by granule size entirely;
3. according to the σ or the σ of ore
0Reach the upper limit size of respectively organizing ore particle, and the condition of work of grinding machine and known parameter, respectively organize the sphere diameter value that ore particle needs with the calculating of sphere diameter half theoretical formula;
4. determine that by waiting to grind entirely the productive rate principle suitable of respectively organizing ore particle to the ore deposit grinding machine just adorns the ball ratio of ball with its required sphere diameter productive rate;
5. the first ball laod ratio of Que Dinging grinds checking in breadboard big grinding machine, proves its reasonability and accuracy, and unreasonable and coarse ball laod ratio is just returned the 4. ratio of the whole unreasonable part of step, the checking back reasonably just the dress ball directly enter commercial Application;
6. draw the positive cumulative property curves of ball lotus of dress ball just according to the first ball laod ratio of recommending.The positive cumulative property curves of ball lotus after determining to add with graphing method is according to this curve calculation adding ball ratio.
(2), adopt the two stage grinding flow process, earlier through primary grinding, feed preparation unit size is milled to maximum particle size 2-3mm for the breeze of≤12mm, wherein less than the 20-30-40% that accounts for of 0.074mm, again through secondary grinding, it is milled to the granularity less than 0.15mm, wherein less than 0.074mm greater than 70%, implementation step is:
1. at the uniaxial compressive strength σ (kg/cm that treats ore grinding stone mensuration ore
2), the compression strength σ of irregular nugget
0, the elastic modelling quantity of ore and Poisson's ratio;
2. first section mill of two stage grinding newly done screen analysis respectively to ore deposit and sand return, newer for ore deposit and sand return by sand return then than conversion, and merge to such an extent that full feed preparation unit size is formed, deduct in first section mill product less than 0.15 following rank, grind materials granularmetric composition is treated in conversion, will treat that mill is divided into 3 or 4 groups to the ore deposit entirely;
3. according to the σ or the σ of ore
0And condition of work and the parameter of respectively treating ore grinding grain class upper limit granularity and grinding machine, respectively organize the required sphere diameter value of ore particle with the calculating of sphere diameter half theoretical formula;
4. determining ball laod ratio just by waiting to grind entirely the productive rate principle suitable with the productive rate of required ball group of respectively organizing ore particle to the ore deposit, is the effective fragmentation that guarantees coarse grain, makes how 3～10 percentage points of productive rates of the corresponding coarse grain group of first and second group steel ball productivity ratio;
5. the first dress ball of Que Dinging grinds experiment in the big grinding machine in laboratory, proves reasonability and accuracy, and unreasonable and coarse ball laod ratio is just returned the ratio that (4) step is put in order unreasonable part, and the ball of rationally just adorning after the checking directly enters commercial Application;
6. draw the positive cumulative property curves of ball lotus of dress ball just according to the first ball laod ratio of recommending.Determine accumulation grain size characteristic curve behind the adding ball with graphing method, according to this curve calculation adding ball ratio;
7. second section mill in the two stage grinding flow process calculates or tests and determine that required sphere diameter is Φ 30～40mm with sphere diameter half theoretical formula.Because the feed preparation unit size narrow range, second section mill is also just enough with Φ 40 and two kinds of balls of Φ 30mm.
8. pulverize in order to improve fine grinding efficient and to alleviate harmful crossing, and reduce the milling medium cost, by single equiponderant principle, be 35 * 40 and two kinds of cast iron sections replacement Φ 40 of 30 * 35mm and Φ 30mm small ball with D * L, here D-truncated cone diameter at butt end, L-frustum of a cone body length;
9. for producing and convenient management, in second section grinding machine just the dress ball add all use D * L be 35 * 40 and 30 * 35mm cast iron section respectively account for 50%.
3. compare advantage and the good effect that has with known technology
(1) more remarkable effect.The energy of many consumptions is much bigger on the energy loss-rate muck of saving on the ore grinding, and the fragmentation of ore and grinding system total energy consumption are descended above 10%, and ability improves more than 30% during the ore grinding platform.Produced unexpected good effect, for the Increasing Production and Energy Saving of ore dressing circle is opened up a valid approach.
(2) adaptability is stronger.Accurate method for ball load and addition and energy consumption reach Increasing Production and Energy Saving method, one is that effect is not too remarkable when using separately, the 2nd, range of application is restricted.After two kinds of method combinations, adaptability strengthens.When the ball mill feed preparation unit size is thick excessively, when very causing, can implement to reduce garrulous ore granularity earlier greater than 25mm, implement accurate method for ball load and addition again.
Four, description of drawings
Fig. 1 is the positive accumulation curve of ball lotus of primary grinding accurate loading and adding balls, and Fig. 2 is the positive accumulation curve of ball lotus of one section mill accurate loading and adding balls in the two stage grinding.Curve 1 among two figure is first dress ball curve, and curve 2 is the ball lotus curves behind the adding ball.
Five, the specific embodiment
Embodiment one. the Yunnan copper mine, and scale 3000 ton per days, adopting two diameter * length is 3.6 * 4.5 meters parallel primary grindings that carry out of ball mill.This factory's dress tip-in is unreasonable, can not finish design objective, implements accurate method for ball load and addition at one section mill earlier, production capacity surpasses design objective significantly, reduces garrulous ore granularity afterwards again, reduces to 12mm by 15mm, the Increasing Production and Energy Saving effect is better, and concrete implementation procedure is as follows:
(1) actual measurement ore uniaxial compressive strength σ=871.775kg/cm
2, irregular nugget compression strength σ
0=398.75kg/cm
2, ore Poisson's ratio μ=0.28, soft firmly partially in the ore, fragility is medium.
(2) get newly to ore deposit and sand return screen analysis respectively, sand return is than by 200%, and conversion merges and helps to the ore deposit newly to after ore deposit and the sand return, and its granularmetric composition is:
Rank (mm) 12～10 10～5 5～2 2～0.15＜0.15 adds up to
Productive rate (%) 27.34 26.91 25.31 8.44 12 100.00
Abrasive particle level composition is treated in conversion after the thin rank of deduction＜0.15mm, and divides four groups as follows:
Rank to be ground (mm) 12～10 10～5 5～2 2～0.15 adds up to
Productive rate to be ground (wt%) 31.13 30.58 28.76 9.53 100.00
(3) according to ore uniaxial compressive strength σ value, and grinding machine condition of work and running parameter to calculate the required sphere diameter (by each class upper limit Granular Computing) of 4 ore particle groups with sphere diameter half theoretical formula as follows:
Each organizes the ore particle granularity upper limit (mm) 12 10 52
Calculate required sphere diameter (mm) 70 60 40 30
(4) by waiting that grinding the full productive rate principle suitable with required steel ball productive rate of each group of ore deposit of giving determines that the first ball laod ratio of grinding machine is:
Treat that mill entirely to the ore deposit grouping 1. 2. 3. 4.
Respectively treat ore grinding grain group productive rate (wt%) 31.13 30.58 28.76 9.53
Each organizes the required sphere diameter of ore particle (mm) 70 60 40 30
Various steel ball ratios determine 30. 30 30 10.0
(5) be to compare in the big grinding machine in 450 * 450mm laboratory to grind checking at D * L, the first dress ball scheme Φ 70 that is recommended: Φ 60: Φ 40: Φ 30=30: effect was all more superior than existing station-service ball scheme and scheme bigger than normal, less than normal in 30: 30: 10, adopted suggested design in the production.
(6) according to the first dress ball scheme of recommending, in the arithmetic coordinate of Fig. 1, draw the positive cumulative property curves 1 of dress ball just, with curve 1 to the parallel Φ 50mm place that moves to, upper right side, the ball lotus characteristic curve after must adding, curve is calculated to such an extent that the adding ball ratio of various balls is thus:
Φ70∶Φ60∶Φ50＝55∶35∶10
Went into operation on May 1st, 2003 in the ore dressing plant, through three months public relations, grinding machine productivity ratio is 53.24 tons/platform only. the time, unit unit consumption 26.3 degree/tons, begin to adopt the accurate loading and adding balls method after in July, 2003, ability is increased to 75.56 tons/platform during grinding machine platform in 2004. the time improve 41.92%, power consumption is reduced to 18.5 degree/tons, reduction by 29.66%.Middle fine crusher has been changed in energy consumption reach in 2005, and garrulous ore granularity is reduced to≤12mm, and the Increasing Production and Energy Saving effect further improves, and mill machine throughput reaches 100 tons/platform. the time, improving 87.83%, power consumption is reduced to 13.7 degree/tons, reduces by 47.91%.As seen, two kinds of methods are very huge in conjunction with back Increasing Production and Energy Saving effect.
Embodiment two. the Yunnan copper ore dressing II of factory series, adopt the two stage grinding flow process, and one section mill and two sections mills all are 2.7 * 3.6 meters ball mills.Muck final size≤15mm, the final fineness-0.074mm of ore grinding reaches 70%, 70 tons/platform of time in grinding production rate. the time.Present two sections mills are implemented accurate method for ball load and addition, and mill machine throughput is increased to 77 tons/platform. the time, fineness-0.074mm reaches 74～75%, after reduce garrulous ore granularity again to≤12mm, the Increasing Production and Energy Saving effect is better, concrete implementation procedure is:
1. at the implementation procedure of one section mill of two stage grinding flow process:
(1) measuring the ore uniaxial compressive strength is σ=871kg/cm
2, irregular nugget compression strength σ
0=398kg/cm
2, ore Poisson's ratio μ=0.28, soft firmly partially in the ore, fragility is medium.
(2) at first section ore grinding of two stage grinding newly do screen analysis to ore deposit and sand return, sand return is than by 100%, this calculates newly to ore deposit and sand return and merges into the full ore deposit of giving, full feed preparation unit size consists of:
Rank (mm) 12～8 8～3 3～0.15＜0.15 adds up to
Productive rate (%) 22.50 32.45 11.1 34.0 100.00
Converts out after the deduction＜0.15mm rank and treat abrasive particle level composition, and it is as follows to be divided into three groups:
Rank to be ground (mm) 12～8 8～3 3～0.15 adds up to
Productive rate to be ground (%) 34.1 49.1 16.8 100.00
(3) according to ore σ=871kg/cm
2, the condition of work that one section grinding machine is 2.7 * 3.6 meters, and the upper limit size of above-mentioned 4 groups of ore particles, calculate that respectively to organize the required steel ball size of ore particle as follows:
Treat ore grinding grain group (mm): 12～8 8～3 3～0.15
Required accurate sphere diameter (mm) 80 60 40
(4) basis is respectively treated the productive rate of mill group and is respectively organized required steel ball size, joins ball with broken statistical mechanics guidance of principle, and the first dress ball scheme of allotting one section mill is:
Treat that mill entirely to the ore deposit grouping 1. 2. 3.
Respectively treat ore grinding grain group productive rate (%) 34.1 49.1 16.8
Each organizes the required sphere diameter of ore particle (mm) 80 60 40
Various steel ball ratios determine 38 52 10
In order to guarantee effective fragmentation of first and second group coarse grain, the steel ball productive rate is to many 3～10 percentage points of ore particle group productive rate.
(5) be that the big grinding machine of 450 * 450mm is made the contrast grinding test in the laboratory with D * L, prove that the first ball laod ratio of recommendation is a preferred plan, provide in the production and use.
(6) according to the first dress ball scheme of recommending, in the arithmetic coordinate of Fig. 2, draw the positive cumulative property curves 1 of first dress ball of first section grinding machine of two stage grinding, with just adorn the ball curve to the parallel Φ of the moving to 60mm in upper right side place the positive cumulative property curves 2 of ball lotus behind the adding ball, opisometer is calculated the tip-in ratio of one section grinding machine and is thus:
Φ80∶Φ60∶40＝50∶30∶20
2. accurate loading and adding balls implementation procedure on two sections grinding machines
(1) two section grinding machine is given ore deposit maximum particle size 2mm, calculates with sphere diameter half theoretical formula, and with Φ 40 and two kinds of steel balls of Φ 30mm, because the feed preparation unit size narrow range of two sections mills, required ball kind is few.
(2) in order to guarantee two sections mill high efficiency, and product is crossed pulverize light, and reduced the medium cost, decision replaces Φ 40 and the Φ 30mm small ball of using in producing with D * L35 * 40 and two kinds of cast iron sections of 30 * 35mm.
(3) produce in the product fineness of two sections mills reach 75% for-0.074mm, therefore adopt D * L be 35 * 40 and 30 * 35mm respectively account for 50% ratio and carry out just adorning and adding.
After implementing accurate loading and adding balls, the production capacity of II series grinding machine by 70 tons/time carry to 77 tons/time, improved 10% ,-0.074mm fineness improves 5～6 percentage points.Ton ore deposit power consumption is reduced to 25 degree/tons by 28 degree/tons, reduces by 10.71%.Garrulous ore granularity reduces to≤12mm after, mill machine throughput bring up to 89 tons/time, improve 27.14%, a ton ore deposit power consumption is reduced to 20 degree/tons, reduction by 28.57%.
Claims (1)
1, the Increasing Production and Energy Saving method that combines of a kind of ball mill accurate loading and adding balls and energy consumption reach, it is characterized in that: it is finished according to the following steps,
(1), adopt primary grinding, feed preparation unit size once is milled to the granularity less than 0.15mm for the breeze of≤12mm, wherein less than the 60-65% that accounts for of 0.074mm, implementation step is:
1. at the uniaxial compressive strength σ, the compression strength σ of irregular nugget that treat ore grinding stone mensuration ore
0, the elastic modelling quantity of ore and Poisson's ratio,
2. grinding machine is newly carried out screen analysis respectively to ore deposit and two kinds of mineral aggregates of sand return, convert newly to ore deposit and sand return than numerical value by sand return then, and merge to such an extent that full feed preparation unit size is formed, after deduction does not need levigate thin rank again, conversion determines that waiting to grind full feed preparation unit size forms, at last, will treat that mill is divided into 4～6 groups to the ore deposit by granule size entirely
3. according to the σ or the σ of ore
0Reach the upper limit size of respectively organizing ore particle, and the condition of work of grinding machine and known parameter, respectively organize the sphere diameter value that ore particle needs with the calculating of sphere diameter half theoretical formula,
4. determine that by waiting to grind entirely the productive rate principle suitable of respectively organizing ore particle to the ore deposit grinding machine just adorns the ball ratio of ball with its required sphere diameter productive rate
5. the first ball laod ratio of Que Dinging grinds checking in breadboard big grinding machine, proves its reasonability and accuracy, and unreasonable and coarse ball laod ratio is just returned the 4. ratio of the whole unreasonable part of step, the checking back reasonably just the dress ball directly enter commercial Application,
6. draw the positive cumulative property curves of ball lotus of dress ball just according to the first ball laod ratio of recommending.The positive cumulative property curves of ball lotus after determining to add with graphing method, according to this curve calculation adding ball ratio,
(2), adopt two stage grinding, earlier through primary grinding, feed preparation unit size is milled to maximum particle size 2-3mm for the breeze of≤12mm, wherein,, it is milled to the granularity less than 0.15mm again through secondary grinding less than the 20-30% that accounts for of 0.074mm, wherein less than 0.074mm greater than 70%, implementation step is:
1. in the primary grinding, at the uniaxial compressive strength σ, the compression strength σ of irregular nugget that treat ore grinding stone mensuration ore
0, the elastic modelling quantity of ore and Poisson's ratio,
2. first section mill of two stage grinding newly done screen analysis respectively to ore deposit and sand return, newer for ore deposit and sand return by sand return then than conversion, and merge to such an extent that full feed preparation unit size is formed, deduct in first section mill product less than 0.15 following rank, grind materials granularmetric composition is treated in conversion, will treat that mill is divided into 3 or 4 groups to the ore deposit entirely
3. according to the σ or the σ of ore
0And condition of work and the parameter of respectively treating ore grinding grain class upper limit granularity and grinding machine, respectively organize the required sphere diameter value of ore particle with the calculating of sphere diameter half theoretical formula,
4. determining ball laod ratio just by waiting to grind entirely the productive rate principle suitable with the productive rate of required ball group of respectively organizing ore particle to the ore deposit, is the effective fragmentation that guarantees coarse grain, makes how 3～10 percentage points of productive rates of the corresponding coarse grain group of first and second group steel ball productivity ratio,
5. the first dress ball of Que Dinging grinds experiment in the big grinding machine in laboratory, proves reasonability and accuracy, and unreasonable and coarse ball laod ratio is just returned the 4. ratio of the whole unreasonable part of step, after the checking rationally just the dress ball directly enter commercial Application,
6. draw the positive cumulative property curves of ball lotus of dress ball just according to the first ball laod ratio of recommending.Determine accumulation grain size characteristic curve behind the adding ball with graphing method, according to this curve calculation adding ball ratio,
7. in second section ore grinding, calculate or experiment determines that required sphere diameter is Φ 30～40mm with sphere diameter half theoretical formula,
8. pulverizing in order to improve fine grinding efficient and to alleviate harmful the mistake, and reduce the milling medium cost, by single equiponderant principle, is 35 * 40 and two kinds of cast iron sections replacement Φ 40 of 30 * 35mm and Φ 30mm small ball with D * L,
9. for producing and convenient management, in second section grinding machine just the dress ball add all use D * L be 35 * 40 and 30 * 35mm cast iron section respectively account for 50%.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102085491B (en) * | 2009-12-08 | 2012-05-23 | 鞍钢集团矿业公司 | New process with four sections of crushing and two times of closed-loop screening for crushing ores through high-pressure roller mill |
| CN102706784A (en) * | 2012-06-19 | 2012-10-03 | 昆明理工大学 | Method for determining grinding granularity of ores based on ore properties |
| CN103611618A (en) * | 2013-12-06 | 2014-03-05 | 中南大学 | Control method for grinding ores in stages |
| CN103934083A (en) * | 2014-04-14 | 2014-07-23 | 云南磷化集团有限公司 | Cylindrical medium proportioning method for fine grinding of collophanite |
| CN105413814A (en) * | 2015-11-04 | 2016-03-23 | 国电龙源节能技术有限公司 | Method for determining size of steel balls in ball mill |
| CN105868458A (en) * | 2016-03-23 | 2016-08-17 | 安徽工程大学 | Cast grinding ball grading mathematical modeling method based on visual platform |
| CN106140448A (en) * | 2016-07-26 | 2016-11-23 | 宋瑞琪 | A kind of grinding machine optimum speed rate computational methods |
| CN108787050A (en) * | 2017-09-14 | 2018-11-13 | 北京环磨科技有限公司 | Semi-Autogenous range optimization ball adding method |
| CN109847866A (en) * | 2019-04-23 | 2019-06-07 | 山东钢铁股份有限公司 | A kind of grinding machine ball adding control method and system |
| CN114471849A (en) * | 2022-01-28 | 2022-05-13 | 南京银茂铅锌矿业有限公司 | Ore grinding medium proportioning method in primary grinding machine using magnetic lining plate |
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2007
- 2007-03-30 CN CNB2007100657598A patent/CN100469451C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102085491B (en) * | 2009-12-08 | 2012-05-23 | 鞍钢集团矿业公司 | New process with four sections of crushing and two times of closed-loop screening for crushing ores through high-pressure roller mill |
| CN102706784A (en) * | 2012-06-19 | 2012-10-03 | 昆明理工大学 | Method for determining grinding granularity of ores based on ore properties |
| CN103611618A (en) * | 2013-12-06 | 2014-03-05 | 中南大学 | Control method for grinding ores in stages |
| CN103934083A (en) * | 2014-04-14 | 2014-07-23 | 云南磷化集团有限公司 | Cylindrical medium proportioning method for fine grinding of collophanite |
| CN105413814A (en) * | 2015-11-04 | 2016-03-23 | 国电龙源节能技术有限公司 | Method for determining size of steel balls in ball mill |
| CN105868458A (en) * | 2016-03-23 | 2016-08-17 | 安徽工程大学 | Cast grinding ball grading mathematical modeling method based on visual platform |
| CN105868458B (en) * | 2016-03-23 | 2020-06-05 | 安徽工程大学 | Casting grinding ball grading mathematical modeling method based on visual platform |
| CN106140448A (en) * | 2016-07-26 | 2016-11-23 | 宋瑞琪 | A kind of grinding machine optimum speed rate computational methods |
| CN106140448B (en) * | 2016-07-26 | 2018-07-20 | 宋瑞琪 | A kind of grinding machine optimum speed rate computational methods |
| CN108787050A (en) * | 2017-09-14 | 2018-11-13 | 北京环磨科技有限公司 | Semi-Autogenous range optimization ball adding method |
| CN109847866A (en) * | 2019-04-23 | 2019-06-07 | 山东钢铁股份有限公司 | A kind of grinding machine ball adding control method and system |
| CN114471849A (en) * | 2022-01-28 | 2022-05-13 | 南京银茂铅锌矿业有限公司 | Ore grinding medium proportioning method in primary grinding machine using magnetic lining plate |
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|---|---|
| CN100469451C (en) | 2009-03-18 |
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