CN112517239B - Concentrate grade regulating and controlling system of drum magnetic separator - Google Patents
Concentrate grade regulating and controlling system of drum magnetic separator Download PDFInfo
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- CN112517239B CN112517239B CN202011560755.9A CN202011560755A CN112517239B CN 112517239 B CN112517239 B CN 112517239B CN 202011560755 A CN202011560755 A CN 202011560755A CN 112517239 B CN112517239 B CN 112517239B
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- concentrate
- box
- push rod
- hydraulic push
- magnetic separator
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- 239000012141 concentrate Substances 0.000 title claims abstract description 96
- 239000006148 magnetic separator Substances 0.000 title claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 10
- 230000001276 controlling effect Effects 0.000 title claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000002441 reversible effect Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 6
- 229920001875 Ebonite Polymers 0.000 claims description 3
- 238000007885 magnetic separation Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 8
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/24—Details of magnetic or electrostatic separation for measuring or calculating of parameters, e.g. efficiency
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a concentrate grade regulating and controlling system of a drum type magnetic separator, which comprises an ore feeding box, a separation tank, a concentrate tank body of the separation tank, a permanent magnet separation drum, a concentrate box and a control box, and is characterized in that field intensity adjusting mechanisms are arranged on the outer side of the permanent magnet separation drum and the concentrate tank body, and concentrate grade detection subsystems are arranged inside and outside the concentrate box; the device comprises a concentrate tank body top plate, a discharging scraper blade, a slide rod, a slide way and a driving device of the discharging scraper blade, wherein the concentrate grade detection mechanism comprises a stirrer arranged in the concentrate tank, a replenishing water pipe arranged on the concentrate tank, a sampler, an automatic level meter and a concentration meter; the invention has the advantages that: the field intensity of the drum magnetic separator can be adjusted to increase or decrease according to the fluctuation of the grade of the concentrate product, and the aim of controlling the grade of the concentrate product of the drum magnetic separator to be stable between 65% and 69% is further fulfilled.
Description
Technical Field
The invention belongs to the technical field of magnetic separation in a concentrating mill, and particularly relates to a concentrate grade regulating and controlling system of a cylindrical magnetic separator.
Background
At present, most iron ore species have magnetism to a certain degree, so magnetic separation is the most main ore separation method for iron ores, wherein strong magnetic minerals such as magnetite and titanomagnetite are separated by a multi-purpose cylinder magnetic separator, and weak magnetic minerals such as hematite, limonite, specularite and the like are separated by a multi-purpose vertical ring strong magnetic separator and a flat ring strong magnetic separator.
Magnetite is the most widely used iron ore with large reserves at present, and is separated and recovered by a cylindrical magnetic separator with small magnetic field intensity due to strong magnetism.
In the case of iron mines, because the ore properties of the iron mines fluctuate widely, and the service life of a general mine is short, and more than 20 years, four or fifty years, the grade of magnetite processed in the service life fluctuates widely, and the fluctuations in the grade, yield, and the like of iron concentrate products are also large. The current magnetic mining drum magnetic separator adopts a permanent magnetic system, the field intensity is fixed field intensity which can not be adjusted, so that when the feeding of the magnetic mining drum magnetic separator fluctuates, the product fluctuation is large, ideal product indexes can not be obtained, and the benefit of a plant is reduced.
Disclosure of Invention
The invention aims to provide a concentrate grade regulating and controlling system of a drum type magnetic separator, which can adapt to the fluctuation of ore feeding grade, can effectively regulate the field intensity of the drum type magnetic separator and can automatically and accurately regulate and control product indexes.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a concentrate grade regulating and controlling system of a drum magnetic separator, which comprises an ore feeding box, a separation tank, a concentrate tank body, a permanent magnet separation drum, a concentrate box ore discharge pipe, a tailing box ore discharge pipe and a control box of the drum magnetic separator, wherein the concentrate box is communicated with a concentrate discharge port of the concentrate tank body;
the field intensity adjusting mechanism comprises a concentrate tank body top plate, a slide bar, a slide way, a discharging scraper and a discharging scraper driving mechanism, the concentrate tank body top plate is arranged at the top of the concentrate tank body, the slide way is arranged on the left side of the upper part of the concentrate tank body top plate, the slide bar is arranged in the slide way and is in sliding connection with the slide way, the discharging scraper driving mechanism comprises a hydraulic push rod base plate, a hydraulic push rod motor arranged on the upper part of the hydraulic push rod base plate and a hydraulic push rod connected with the hydraulic push rod motor, the hydraulic push rod base plate is in bolted connection with the right side of the upper part of the concentrate tank body top plate,
one end of the discharging scraper is respectively and fixedly connected with the hydraulic push rod sliding rod and the sliding rod, and the other end of the discharging scraper is arranged in parallel with the permanent magnet separation barrel at intervals and is inclined downwards by an angle of 30-40 degrees;
the concentrate grade detection mechanism comprises a stirrer arranged in the concentrate box, a replenishing water pipe arranged on the concentrate box, a concentration meter arranged on an ore discharge pipe of the concentrate box and a sampling detection mechanism, wherein the sampling detection mechanism comprises a sampler and an automatic level meter; the automatic level meter is connected with the sampler through a sampler sample tube, the water replenishing tube is provided with an electric control valve, and the stirrer, the automatic level meter, the concentration meter, the electric control valve and the hydraulic push rod motor are all electrically connected with the control box.
The discharging scraper plate is 3-5mm away from the cylinder surface of the permanent magnet separation cylinder and is made of hard rubber.
The two stirrers are uniformly distributed in the concentrate box along the length direction of the concentrate box.
The hydraulic push rod motor is a reversible motor, and the automatic level indicator is automatically interlocked with the reversible motor driving the hydraulic push rod to do linear reciprocating motion.
The concentration meter is automatically interlocked with an electric regulating valve of the replenishing water pipe.
The reversible motor operation signal, the concentration signal, the motor driving signal of all valves and the detection signal of the automatic level indicator of the hydraulic push rod are all connected with the control box and automatically operated.
The invention has the advantages that:
because the invention is provided with the field intensity adjusting mechanism at the outer side of the permanent magnet separation cylinder and the upper part of the concentrate groove body, the invention has the advantages that the permanent magnet separation cylinder is provided with the field intensity adjusting mechanism at the outer side and the upper part of the concentrate groove body
The ore is discharged by an ore discharging scraper, and a concentrate covering ring is reserved on the surfaces of the ore discharging scraper and the roller to control the magnetic field intensity on the surface of the covering ring. The method utilizes the principle that the magnetic field intensity is gradually reduced along with the increase of the distance on the surface of the magnetic roller, adjusts the field intensity on the surface of the covering ring by controlling the thickness of the covering ring, and takes the concentrate covering ring as a new separation surface, thereby realizing the controllability of the field intensity of the separation surface, and acquiring different iron concentrate indexes by utilizing different field intensities.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is an enlarged view of a portion B of fig. 1.
Fig. 3 is a view from direction a-a of fig. 1.
Fig. 4 is a view from the direction B-B of fig. 1.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 4, the concentrate grade control system of a drum magnetic separator of the present invention comprises an ore feeding box 1, a separation tank 2, a concentrate tank body 14, a permanent magnet separation drum 3, a concentrate tank 4, a concentrate tank discharge pipe 9, a tailing tank 5, a tailing tank discharge pipe 6 and a control box of the drum magnetic separator, wherein the concentrate tank 4 is communicated with a concentrate discharge port of the concentrate tank body 14, and the tailing tank 5 is communicated with a tailing port at the bottom of the separation tank 2, and is characterized in that a field intensity adjusting mechanism 8 is arranged on the outer side of the permanent magnet separation drum 3 and the upper part of the concentrate tank body 14, and a concentrate grade detecting mechanism is arranged on the concentrate tank 4;
the field intensity adjusting mechanism 8 comprises a concentrate tank body top plate 81, a sliding rod 86, a sliding way 85, a discharging scraper 87 and a discharging scraper driving mechanism, the concentrate tank body top plate 81 is arranged at the top of the concentrate tank body 14, the sliding way 85 is arranged on the left side of the upper part of the concentrate tank body top plate 81, the sliding rod 86 is arranged in the sliding way 85 and is in sliding connection with the sliding way 85, the discharging scraper driving mechanism comprises a hydraulic push rod base plate 82, a hydraulic push rod motor 83 arranged on the upper part of the hydraulic push rod base plate 82 and a hydraulic push rod 84 connected with the hydraulic push rod motor 83, the hydraulic push rod base plate 82 is in bolted connection with the right side of the upper part of the concentrate tank body top plate 81,
one end of the discharging scraper 87 is fixedly connected with the sliding rods 86 of the hydraulic push rods 84, and the other end of the discharging scraper is parallel to the permanent magnet separation barrel 3 at intervals and inclines downwards at an angle of 30-40 degrees; the discharging scraper 87 is 3-5mm away from the surface of the permanent magnet separation cylinder and is made of hard rubber. The ore is discharged by an ore discharging scraper 87, and the magnetic field intensity of the surface of a covering ring is controlled by reserving the ore discharging scraper and the surface of a permanent magnet separation barrel with a concentrate covering ring, wherein 15 is concentrate material.
The distance between the ore unloading scraper 87 and the surface of the permanent magnet separation cylinder 3 is controlled by equal steps, the hydraulic push rod 84 extends forwards or retracts by equal steps, the step distance is 10 mm, and the step time is 10 min; the maximum stroke of the hydraulic push rod 84 is 100 mm, and when the hydraulic push rod extends to the limit position, the distance between the discharging scraper 87 and the cylindrical surface of the permanent magnet separation cylinder 3 is 3 mm. The method ensures that the grade detection has certain buffering time under certain covering ring surface field intensity, and ensures that the detection result of the grade detector is the detection result when the iron concentrate product under specific field intensity flows to the grade detector, thereby ensuring the validity of the detection result.
The concentrate grade detection mechanism comprises a stirrer 11 arranged in a concentrate box 4, a replenishing water pipe 13 arranged on the concentrate box 4, a concentration meter 7 arranged on a concentrate box ore discharge pipe 9 and a sampling detection mechanism, wherein the sampling detection mechanism comprises a sampler 101 and an automatic grade meter 102; the automatic level meter 102 is connected with the sampler 101 through a sampler sample tube, and the water replenishing tube 13 is provided with an electric regulating valve 12.
The two stirrers 11 are uniformly distributed in the concentrate tank along the length direction of the concentrate tank 4. Through set up agitator 11 at the concentrate case, realized the homogeneity distribution of concentrate incasement material to the accuracy of concentrate grade determination has been ensured.
The automatic level meter 102 of the invention is automatically interlocked with the reversible motor of the hydraulic push rod 84, and the concentration meter 7 is automatically interlocked with the electric regulating valve 12 of the replenishing water pipe 13.
The linkage of the reversible motor of the adjusting valve for replenishing the water pipe and the concentration meter of the concentrate ore discharge pipe realizes the accurate control of the concentrate concentration at 45% -60%, so that the concentrate concentration is controlled at the proper feeding concentration of the automatic level meter, and the detection effect of the automatic level meter is guaranteed.
The invention realizes the accurate regulation and control of the grade of the concentrate product between 65 percent and 69 percent by interlocking the reversible motor of the hydraulic push rod of the ore unloading scraper with the automatic level gauge. The influence of the low grade on the sale and the selling price when the grade of the concentrate product is lower than 65 percent is avoided; and when the grade of the concentrate product is higher than 69%, the silicon content in the concentrate product is too low, so that the fluidity of the blast furnace ironmaking slag is reduced, and adverse effects on the selling price and the sale route of the concentrate product are avoided.
The stirrer 11, the automatic level indicator 102, the concentration meter 7, the electric regulating valve 12 and the hydraulic push rod motor 83 are electrically connected with the control box.
The reversible motor operation signal, the concentration signal, the motor driving signal of the valve and the detection signal of the automatic level meter of the hydraulic push rod are connected with the control box and automatically operated. The mode can not only realize real-time detection and control, but also does not need manual operation, thereby saving the labor cost.
Claims (5)
1. A concentrate grade regulating and controlling system of a drum magnetic separator comprises an ore feeding box, a separation groove, a concentrate groove body, a permanent magnet separation drum, a concentrate box ore discharging pipe, a tailing box ore discharging pipe and a control box of the drum magnetic separator, wherein the concentrate box is communicated with a concentrate discharging port of the concentrate groove body;
the field intensity adjusting mechanism comprises a concentrate tank body top plate, a slide bar, a slide way, a discharging scraper and a discharging scraper driving mechanism, the concentrate tank body top plate is arranged at the top of the concentrate tank body, the slide way is arranged on the left side of the upper part of the concentrate tank body top plate, the slide bar is arranged in the slide way and is in sliding connection with the slide way, the discharging scraper driving mechanism comprises a hydraulic push rod base plate, a hydraulic push rod motor arranged on the upper part of the hydraulic push rod base plate and a hydraulic push rod connected with the hydraulic push rod motor, the hydraulic push rod base plate is in bolted connection with the right side of the upper part of the concentrate tank body top plate,
one end of the discharging scraper is respectively and fixedly connected with a hydraulic push rod sliding rod and a sliding rod, and the other end of the discharging scraper is arranged in parallel with the permanent magnet separation barrel at intervals and inclines downwards by 30-40 degrees; the magnetic field intensity of the surface of a covering ring is controlled by adopting an ore unloading scraper to unload ores and reserving a concentrate covering ring on the surfaces of the ore unloading scraper and a permanent magnet separation barrel;
the concentrate grade detection mechanism comprises a stirrer arranged in the concentrate box, a replenishing water pipe arranged on the concentrate box, a concentration meter arranged on an ore discharge pipe of the concentrate box and a sampling detection mechanism, wherein the sampling detection mechanism comprises a sampler and an automatic level meter; the automatic level meter is connected with the sampler through a sampler sample tube, the water replenishing tube is provided with an electric control valve, and the stirrer, the automatic level meter, the concentration meter, the electric control valve and the hydraulic push rod motor are all electrically connected with the control box.
2. The concentrate grade control system of the drum magnetic separator according to claim 1, wherein the discharging scraper is 3-5mm away from the surface of the permanent magnetic separation drum and is made of hard rubber.
3. The concentrate grade control system of the drum magnetic separator according to claim 1, wherein the number of the stirrers is two, and the stirrers are uniformly distributed in the concentrate box along the length direction of the concentrate box.
4. The concentrate grade control system of a drum magnetic separator according to claim 1, wherein the hydraulic push rod motor is a reversible motor, and the automatic level meter is automatically interlocked with the reversible motor driving the hydraulic push rod to reciprocate linearly.
5. The concentrate grade control system of the drum magnetic separator according to claim 1, wherein the concentration meter is automatically interlocked with an electric control valve of a replenishing water pipe.
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CN202011560755.9A CN112517239B (en) | 2020-12-25 | 2020-12-25 | Concentrate grade regulating and controlling system of drum magnetic separator |
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CN202011560755.9A CN112517239B (en) | 2020-12-25 | 2020-12-25 | Concentrate grade regulating and controlling system of drum magnetic separator |
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CN112517239A CN112517239A (en) | 2021-03-19 |
CN112517239B true CN112517239B (en) | 2022-07-22 |
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Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1701855A (en) * | 2005-02-05 | 2005-11-30 | 李文武 | Magnet field adjustable magnetic separator |
CN200991658Y (en) * | 2006-12-27 | 2007-12-19 | 中钢集团马鞍山矿山研究院 | Forward-flow wet-type coarse particle permanent magnet tube-type magnetic sorting machine |
CN201205517Y (en) * | 2008-04-23 | 2009-03-11 | 王美华 | Permanent magnetism barrel type roughing machine |
CN101664716B (en) * | 2008-09-05 | 2011-09-28 | 鞍钢集团矿业公司 | Downdraft controllable electromagnetic separator |
CN201394502Y (en) * | 2009-04-04 | 2010-02-03 | 余锦伟 | Double magnetic drum density adjusting and controlling magnetic separator |
CN102179298B (en) * | 2011-02-15 | 2013-08-07 | 中国科学院武汉岩土力学研究所 | Permanent magnet inner cylinder type polymetallic synchronous magnetic separator |
CN102527512A (en) * | 2012-01-19 | 2012-07-04 | 河北联合大学 | Intelligent efficient classificator |
CN105921271B (en) * | 2016-06-15 | 2018-11-02 | 沈阳隆基电磁科技股份有限公司 | A kind of intelligence elutriation magnetic separator and magnetic selection method |
CN108080145A (en) * | 2018-01-31 | 2018-05-29 | 遵化市聚鹏矿山机械有限公司 | Weak magnetic mineral permanent magnetism highfield separating-purifying machine |
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