CN103599840B - Control method for a variety of ore grinding media during ore grinding - Google Patents
Control method for a variety of ore grinding media during ore grinding Download PDFInfo
- Publication number
- CN103599840B CN103599840B CN201310650060.3A CN201310650060A CN103599840B CN 103599840 B CN103599840 B CN 103599840B CN 201310650060 A CN201310650060 A CN 201310650060A CN 103599840 B CN103599840 B CN 103599840B
- Authority
- CN
- China
- Prior art keywords
- ore grinding
- diameter
- milling medium
- ball
- particle size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Crushing And Grinding (AREA)
Abstract
The invention relates to a control method for a variety of ore grinding media during ore grinding. The method includes: firstly classifying 5 ore grinding media with different diameters according to particle size and storing them in a ball storage bin before adding them into a ball grinder, calculating the proportions of the ore grinding media with different diameters according to the nature, ore grinding particle size and ratio requirements of ore, starting an ore grinding device, conducting ore grinding for 12-15h, carrying out sampling every two hours to conduct particle size detection four times, calculating the mass of the ore grinding media according to a proportion of maximum content of particle size in the total proportion under the condition of the ore grinding particle size in the normal distribution, and converting the mass into the corresponding quantity of the ore grinding media with different diameters. According to different effects of the ball grinding media with different thicknesses on minerals, the method provided in the invention adopts a variety of ball grinding media to conduct ball grinding on the minerals in two stages. The needed ball grinding media are re-calculated every time according to the detection results, so that the ratio of the ore grinding media added into the ball grinder can reach an optimal state, thus improving the ore grinding efficiency of the grinder and reducing the unit energy consumption of the grinder.
Description
Technical field
The present invention relates to the control method that in a kind of ore dressing process, milling medium adds, particularly during a kind of Discrete control, milling medium adds the method for ball milling automatically.
Background technology
In order to improve the grade of concentrate in ore dressing process, need to make target minreal and gangue mineral monomer separation.In order to realize monomer separation, in beneficiation flowsheet, all can add this link of ore grinding.Ore grinding is the highest link that consumes energy in ore dressing process, and its energy consumption accounts for more than 50% of whole ore dressing process, and, poor along with mineral resources, some mineral grade also constantly reduce, thus result in that grinding efficiency is low, the fluctuation of ore dressing process technic index is large, causes the waste of resource and the energy.According to the difference of granularity, different grinding processes is adopted to be a kind of means of effective raising grinding efficiency to the mineral of different phase.After proposing to enter Grinding procedure in patent application 200710063759.8, implement accurately makeup compensating method ore grinding, make power consumption of the mill reduce by 47.91%, mill machine throughput improves 87.3%.Propose in patent application 200910248481.7, feed preparation unit size according to defined forms, add the milling medium of two kinds of diameters simultaneously, milling medium is iron ball, reduce coarsely graded productive rate, improve fine-graded productive rate, improve grinding machine grinding efficiency, grinding particle size is formed improvement to a certain extent.Thin according to the letter such as character, grinding machine condition of work, grinding particle size of ore as can be seen here, precision is carried out to the milling medium added, determining the milling medium adding proportion of different-diameter, to be improved making the grinding efficiency of grinding machine significantly improve, the make grinding efficiency of grinding machine, to reduce the specific energy consumption amount of grinding machine.
Summary of the invention
A kind of milling medium access control method when the present invention devises bornite ore grinding.The milling medium of different-diameter was carried out before being added to ball mill be stored in ball cabinet by particle size classification, then according to character, the grinding particle size information of ore, precision is carried out to the milling medium added, determines the adding proportion of different milling medium diameter.After a period of time, adopt sampling observation and predict the method that combines, recalculating the adding proportion of adding abrading-ball, carry out second time levigate after, granularity be less than 75 μm account for 82% ~ 93%.
The composition of bornite is mainly Cu5FeS4, Cu 63.33%, Fe 11.12%, S 25.55%; Because bornite is often containing chalcopyrite, vitreous copper microinclusion, its actual composition variation is very large because when high temperature (>400 DEG C) and chalcopyrite, vitreous copper be solid solution, generation solid solution exsolution during low temperature.The grinding process of the present invention to bornite is as follows:
A. will the milling medium of 5 kinds of different-diameters be had to carry out being stored in ball cabinet by particle size classification before being added to ball mill, milling medium diameter be respectively 50mm, 65 mm, 75mm, 90 mm and 110 mm;
B., before corase grind starts, according to the character of bornite, grinding particle size and ratio requirement, the ratio calculating the milling medium of various different-diameter is 1:(1.8 ~ 2.4): (0.8 ~ 1.2): (2.0 ~ 2.6): (1.2 ~ 1.6);
C. according to the quality of single milling medium, calculate the number of the milling medium of different-diameter, and input the counter of corresponding diameter milling medium surge chamber outlet;
D. start the control motor of medium channel controller and the counter of surge chamber outlet, often go out an abrading-ball medium, counter subtracts one, when counter vanishing, controls motor and automatically cuts off, stop abrading-ball medium to continue to fall from milling medium channel controller;
E. start ore grinding device, ore grinding 12-15 hour, sampling in every 2 hours detects granularity, detects 5 times altogether, according to the testing result of first 5 times, recalculates the quality of milling medium, be scaled the respective numbers of different-diameter.
In formula, Si represents the content that i-th granularity is less than 75 μm, wherein i=1,2,3,4,5.Ki is each weight, gets 1,2.2,3.4,4.4 respectively, if the value of P shows that below 0.6 fineness ratio is comparatively thick, then diameter is 90 mm and 110 mm milling medium cappings, and diameter is that the milling medium of 65 mm, 75mm gets median.If the value of P is between 0.6 to 0.7, below show granularity still can, then diameter is that 90 mm and 110 mm milling mediums get median, and diameter is that the milling medium of 65 mm, 75mm gets median.If the value of P is more than 0.7, then diameter is that 90 mm and 110 mm milling mediums remove the limit, and diameter is the milling medium capping of 65 mm, 75mm.
The present invention according to the different ball-milling medium of thickness to the difference of mineral effect, adopt multiple ball-milling medium, divide two sections and ball milling is carried out to bornite, recalculate required ball-milling medium according to testing result at every turn, can make to add the proportioning of milling medium in ball mill and reach optimum state, improve the grinding efficiency of grinding machine, reduce the specific energy consumption amount of grinding machine.
Detailed description of the invention
Embodiment 1 can explain the present invention in more detail by the following examples, and the present invention is not limited to the following examples.
Suppose that automatically controlling ball adding device comprises five kinds of milling medium ball cabinets, the diameter of the milling medium of storage is respectively
50mm,
65 mm,
75mm,
90 mm,
100 mm.According to the granularity requirements after bornite component content and ore grinding, the mass ratio of five kinds of milling mediums requires reach best grinding efficiency for 1:2.5:0.9:2.2:1.2.Calculate the number of five kinds of corresponding milling mediums thus, and insert the counting of corresponding surge chamber outlet.Power-on, the counter of the control motor of medium channel controller and surge chamber outlet is started working, often go out an abrading-ball medium, counter subtracts one, when counter vanishing, control motor automatically to cut off, stop abrading-ball medium to continue to fall from milling medium channel controller, make abrading-ball medium reach optimum proportioning.
Start ore grinding device, ore grinding 12-15 hour, sampling in every 2 hours detects granularity, detects 5 times altogether, when first time is detected, the content that granularity is less than 75 μm is 5.1%, second time records the content that granularity is less than 75 μm when detecting be 15.3%, and recording when third time is detected and recording the content that granularity is less than 75 μm when content that granularity is less than 75 μm is and detects for the 25.9%, four time is 38.3%, recording the content that granularity is less than 75 μm when detecting for four times is 55.6%, according to formula
,
Calculate P=69.76, belong between 0.6 to 0.7, diameter is that 90 mm and 110 mm milling mediums get median 2.3 and 1.6, and diameter is that the milling medium of 65 mm, 75mm gets median 2.1 and 1.0;
, the new mass ratio calculating milling medium is 1:2.1:1.0:2.3:1.6, is scaled the respective numbers of different-diameter, again ore grinding 12-15 hour.
Claims (1)
1. the control method of multiple milling medium in ore grinding, is characterized in that comprising the following steps:
A. will the milling medium of 5 kinds of different-diameters be had to carry out being stored in ball cabinet by particle size classification before being added to ball mill, milling medium diameter be respectively
50mm,
65 mm,
75mm,
90 mm,
100 mm;
B., before corase grind starts, according to the character of bornite, grinding particle size and ratio requirement, the ratio of the milling medium of various different-diameter is calculated;
C. according to the quality of single milling medium, calculate the number of the milling medium of different-diameter, and input the counter of corresponding diameter milling medium surge chamber outlet;
D. start the control motor of medium channel controller and the counter of surge chamber outlet, often go out an abrading-ball medium, counter subtracts one, when counter vanishing, controls motor and automatically cuts off, stop abrading-ball medium to continue to fall from milling medium channel controller;
E. start ore grinding device, ore grinding 12-15 hour, sampling in every 2.5 hours detects granularity, detect 4 times altogether, at grinding particle size by under normal distribution condition, according to the ratio accounting for total amount of most high-load granularity, recalculate the quality of milling medium, be scaled the respective numbers of different-diameter;
F. start ore grinding device, ore grinding 12-15 hour, sampling in every 2 hours detects granularity, detects 5 times altogether, according to the testing result of first 5 times, recalculates the quality of milling medium, be scaled the respective numbers of different-diameter;
In formula, Si represents the content that i-th granularity is less than 75 μm, wherein i=1,2,3,4,5; Ki is each weight, gets 1,2.2,3.4,4.4 respectively, if the value of P shows that below 0.6 fineness ratio is comparatively thick, then diameter is 90 mm and 110 mm milling medium cappings, and diameter is that the milling medium of 65 mm, 75mm gets median; If the value of P is between 0.6 to 0.7, below show granularity still can, then diameter is that 90 mm and 110 mm milling mediums get median, and diameter is that the milling medium of 65 mm, 75mm gets median; If the value of P is more than 0.7, then diameter is that 90 mm and 110 mm milling mediums remove the limit, and diameter is the milling medium capping of 65 mm, 75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310650060.3A CN103599840B (en) | 2013-12-06 | 2013-12-06 | Control method for a variety of ore grinding media during ore grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310650060.3A CN103599840B (en) | 2013-12-06 | 2013-12-06 | Control method for a variety of ore grinding media during ore grinding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103599840A CN103599840A (en) | 2014-02-26 |
| CN103599840B true CN103599840B (en) | 2015-07-22 |
Family
ID=50118137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310650060.3A Expired - Fee Related CN103599840B (en) | 2013-12-06 | 2013-12-06 | Control method for a variety of ore grinding media during ore grinding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103599840B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028364A (en) * | 2014-04-30 | 2014-09-10 | 江西理工大学 | Multi-metal ore-separating and ore-grinding grading optimization test method |
| CN105536943B (en) * | 2015-12-24 | 2018-04-10 | 山东理工大学 | One kind swollen tripe detection means of point interconnection system multi-compartment tube grinding machine and pre-swollen tripe regulation and control method |
| CN113546728B (en) * | 2021-08-28 | 2023-11-14 | 潍坊凯华碳化硅微粉有限公司 | Silicon carbide micro powder grinding system and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546237A (en) * | 2003-12-06 | 2004-11-17 | �Ϻ���ͨ��ѧ | Ball grinder accurate ball loading method |
| CN101036902A (en) * | 2007-03-30 | 2007-09-19 | 昆明理工大学 | The method of accurate loading-and-filling ball of two sections of milling mine |
| CN103008068A (en) * | 2012-12-31 | 2013-04-03 | 中南大学 | Automatic ball feeding method with accuracy control |
-
2013
- 2013-12-06 CN CN201310650060.3A patent/CN103599840B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546237A (en) * | 2003-12-06 | 2004-11-17 | �Ϻ���ͨ��ѧ | Ball grinder accurate ball loading method |
| CN101036902A (en) * | 2007-03-30 | 2007-09-19 | 昆明理工大学 | The method of accurate loading-and-filling ball of two sections of milling mine |
| CN103008068A (en) * | 2012-12-31 | 2013-04-03 | 中南大学 | Automatic ball feeding method with accuracy control |
Non-Patent Citations (1)
| Title |
|---|
| 斑铜矿与磨矿介质之间的电化学作用及其对可浮性的影响;黄国智等;《国外金属矿选矿》;20090215;第49-54页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103599840A (en) | 2014-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773161B (en) | Magnetic-gravity combined ore dressing technology for hematite | |
| CN103599840B (en) | Control method for a variety of ore grinding media during ore grinding | |
| CN101559403B (en) | Method for concentrating extremely low-grade refractory magnetite | |
| CN102728453B (en) | New technology for sorting lean hematite and magnetite orecontaining iron carbonate | |
| CN103567051B (en) | Small-scale lean hematite separation technology | |
| CN104707734B (en) | Process for reducing collophanite flotation tailing grade | |
| CN104826728A (en) | New mineral separation method suitable for separation of hard-separation micro-fine particle magnetic iron ores | |
| CN103056020A (en) | Maximum optional size grading process for beneficiation and grinding | |
| CN104785367A (en) | Mineral separation method for pre-extraction of concentrates from roasted iron ore | |
| CN106670898A (en) | Roller surface current decreasing type grinding process | |
| CN109524229A (en) | A kind of method that cell mill batch prepares permanent ferrite forming slurry | |
| CN102921547A (en) | Dry type ore dressing process for iron ore | |
| CN104785358B (en) | Iron ore of low ore grade beneficiation method and device | |
| CN103657836B (en) | A kind of be suitable for the ore dressing of micro fine particle magnetite stone put forward the energy-conservation ore-dressing technique of iron | |
| CN101880736A (en) | Preparation technology of superfine steel slag micropowder and production process | |
| CN103008068B (en) | Automatic ball feeding method with accuracy control | |
| CN106154868B (en) | A kind of blast-furnace tuyere coke size hierarchical control method | |
| CN103611618A (en) | Control method for grinding ores in stages | |
| CN103377247B (en) | The intelligent extract method of grind mineral control case | |
| CN107626433B (en) | Method for determining steel ball adding amount by controlling power of large-scale overflow ball mill | |
| CN103084266A (en) | Smelting steel tailings micro-powder production method and apparatus thereof | |
| CN105203433B (en) | Abrasive lapping ability detection method | |
| CN110455781B (en) | LIBS (laser induced breakdown Spectroscopy) online detection system for phosphate ore dressing system and application of LIBS online detection system | |
| Lo et al. | Cost reduction in grinding plants through process optimization and control | |
| CN205146435U (en) | Ore grinding secondary grading system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20151206 |
|
| EXPY | Termination of patent right or utility model |