CN115318433A - Wet magnetic separator with adjustable permanent magnetic field intensity and use method - Google Patents
Wet magnetic separator with adjustable permanent magnetic field intensity and use method Download PDFInfo
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- CN115318433A CN115318433A CN202211043729.8A CN202211043729A CN115318433A CN 115318433 A CN115318433 A CN 115318433A CN 202211043729 A CN202211043729 A CN 202211043729A CN 115318433 A CN115318433 A CN 115318433A
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- 239000006148 magnetic separator Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000012141 concentrate Substances 0.000 claims abstract description 95
- 238000000926 separation method Methods 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 238000011010 flushing procedure Methods 0.000 claims abstract description 39
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 36
- 239000011707 mineral Substances 0.000 claims abstract description 36
- 239000008237 rinsing water Substances 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000009471 action Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000005389 magnetism Effects 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- -1 aluminum nickel cobalt Chemical compound 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002000 scavenging effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 44
- 229910052742 iron Inorganic materials 0.000 description 22
- 238000007885 magnetic separation Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 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 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 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
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
- B03B5/56—Drum classifiers
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
- B03B2011/006—Scraper dischargers
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a wet magnetic separator with adjustable permanent magnetic field intensity, which comprises a roller, an ore feeding groove, a separation groove, a concentrate flushing water pipe, a motor transmission mechanism, a rack, a magnetic declination adjusting mechanism, an adjustable permanent magnetic system, more than 2 concentrate grooves, a flushing water pipe and a rinsing water pipe, wherein the ore feeding groove is arranged on the roller; the device adjusts the distance between the magnetic block and the inner wall of the roller through the telescopic rod, so that separation areas with different magnetic field strengths are generated on the roller, different separation areas correspond to different concentrate tanks, different magnetic minerals are adsorbed to the surface of the roller and rotate along with the roller, ore is unloaded under the action of a concentrate flushing water pipe and a scraper, and different magnetic minerals enter different concentrate tanks; the device realizes the continuous stage separation of different magnetic minerals, and the minerals with different magnetic strengths are respectively recovered in the same separator, so that the one-time completion of concentration and scavenging is realized; the equipment has the advantages of good selectivity, high concentrate grade and recovery rate, short process flow, long separation zone, convenient production and application, good separation effect and the like.
Description
Technical Field
The invention relates to a wet magnetic separator with adjustable permanent magnetic field intensity and a use method thereof, which are applied to the engineering fields of mineral processing, environment, chemical engineering, materials and the like and belong to the technical field of solid material separation.
Background
The permanent magnetic separator is a common iron ore separation device and is suitable for separating substances with magnetic differences. In the field of mining industry, the permanent magnetic separator is widely used for magnetic separation of materials such as magnetite, titanomagnetite, manganese ore, roasted ore, ilmenite, hematite and limonite, and is also used for iron removal operation of materials such as coal, non-metal ore, building materials and the like. The permanent magnetic separator has low running cost and simple operation. The factors influencing the magnetic separation performance of the permanent magnetic equipment are many, including the structure of a magnetic separator, the magnetic field intensity and the gradient, the operation conditions, the ore property and the like, but the existing permanent magnetic equipment has the defects of single magnetic system design, fixed magnetic field intensity, short separation belt, serious magnetic separation inclusion, weak adaptability and the like. The iron ores in China are mainly poor, fine and miscellaneous iron ores, the properties of the iron ores in different regions of China are greatly different, even the iron ores in the same region have the phenomenon of great difference, the properties of the raw ores in the same ore dressing plant are different every day, and for magnetic separation equipment, the properties of the raw ores are changed, so that the magnetic field intensity can be adjusted. However, the existing permanent magnetic equipment does not have the performance of adjustable magnetic field intensity, and the magnetic field intensity cannot be adjusted in time to adapt to the change of ore properties, so that the magnetic separation performance is influenced. This requires that the mill be equipped with magnetic separation equipment with adjustable magnetic field strength and stronger adaptability.
Disclosure of Invention
The invention provides a wet magnetic separator with adjustable permanent magnetic field intensity, which comprises a roller, an ore feeding groove, a separation groove, a concentrate flushing water pipe, a motor transmission mechanism, a rack, a magnetic declination adjusting mechanism, an adjustable permanent magnetic system, more than 2 concentrate grooves, a flushing water pipe and a rinsing water pipe, wherein the roller is arranged on the rack; the separation tank is fixed on the top of the frame, a plurality of flushing and dispersing water pipes are uniformly distributed at the bottom in the separation tank side by side along the axial direction, more than 2 concentrate tanks are fixed on the frame and positioned at one side of the separation tank, a scraping plate is obliquely fixed at one side of the top of the concentrate tanks close to the roller and is matched with the roller for ore unloading, more than 1 concentrate flushing water pipe is fixed at one side of the frame and positioned above the concentrate tanks, and more than 1 rinsing water pipe is fixed at the other side of the frame and positioned above the separation tank; the roller is movably arranged on the rack through a rotating shaft II, the lower part of the roller is positioned in the sorting groove, the adjustable permanent magnetic system is arranged in the roller through the rotating shaft I, and the motor transmission mechanism is fixed on one end of the rack and connected with one end of the rotating shaft II to drive the roller to rotate; a magnetic declination angle adjusting mechanism is arranged at the other end of the rack and is connected with the adjustable permanent magnetic pole through a rotating shaft I; the ore feeding groove is arranged at one axial end of the separation groove, and the tailing outlet is arranged at the other end of the separation groove; the flushing and dispersing water pipe, the concentrate flushing water pipe and the rinsing water pipe are all pipelines with holes, one end of each pipeline is connected with a water source, and the other end of each pipeline is closed.
The adjustable permanent magnetic system is composed of a plurality of magnetic poles which are sleeved and fixed on a rotating shaft I, each magnetic pole comprises a fixed disc, a telescopic rod and a magnetic block, the fixed discs are fixed on the rotating shaft I, one ends of the telescopic rods are fixed at the outer edge of the fixed discs, the magnetic blocks are fixed on push rods of the telescopic rods, the magnetic wrap angles of the magnetic poles are 1-360 degrees, and the distance between each magnetic block and the inner wall of the roller is 1-1000mm.
The magnetic block is fixed on the push rod of the telescopic rod through the magnetic conduction plate, and the magnetic block is made of ferrite permanent magnet materials and rare earth permanent magnet materials such as neodymium iron boron magnets, samarium cobalt magnets and aluminum nickel cobalt magnets.
The motor transmission mechanism comprises a motor and 2 belt wheels or gears, the motor is fixed on the rack, one belt wheel or gear is fixed on an output shaft of the motor, the other belt wheel or gear is fixed at one end of the rotating shaft II, and the 2 belt wheels are connected through a belt or a chain.
The magnetic declination adjusting mechanism comprises a screw and a connecting rod, one end of the screw is arranged in the screw supporting seat and is in threaded fit with the screw, the other end of the screw is connected with one end of the connecting rod through a pin, and the other end of the connecting rod is fixed on one end of the rotating shaft I; the magnetic declination adjusting mechanism is used for adjusting the position correspondence of a non-magnetic area or a weak magnetic area of a magnetic pole and an ore unloading area (an area where a concentrate flushing water pipe is located).
The separation grooves are semicircular grooves, and baffles are arranged between the concentrate grooves and fixed on the scraping plates to prevent minerals in different separation areas from entering other concentration grooves; the machine frame is provided with a rinsing water inlet, a flushing water inlet and a flushing water inlet, the rinsing water inlet is communicated with a rinsing water pipe through a pipeline, the flushing water inlet is communicated with a concentrate flushing water pipe through a pipeline, and the flushing water inlet is communicated with a flushing water pipe through a pipeline; the baffle can also be a movable baffle, the lower end of the movable baffle is movably arranged at the edge of the top of the concentrate tank and used for finely adjusting the range of minerals entering the inlet tank;
the invention also aims to provide a use method of the device, namely, ore pulp is added into the separation tank from the ore feeding tank, the dispersing water pipe at the bottom of the separation tank can promote the suspension of the ore pulp, the flow speed of the ore pulp in the separation tank is controlled, the ore pulp flows along the separation tank to the direction of a tailing outlet, a plurality of magnetic poles of an adjustable permanent magnetic system in the roller can adjust the distance between the magnetic blocks and the inner wall of the roller through telescopic links, so that separation areas with different magnetic field strengths are generated on the roller, the different separation areas correspond to different concentrate tanks, different magnetic minerals are adsorbed to the surface of the roller and rotate along with the roller, when the roller adsorbing the magnetic minerals passes through the rinsing water pipe, the rinsing water pipe is used for rinsing and impurity removing of the concentrate, when the roller enters the concentrate rinsing water pipe area, the ore is unloaded under the action of the concentrate rinsing water pipe and the scraping plate, the different magnetic minerals enter the different concentrate tanks, and the minerals with different magnetic strengths are separated and recovered in the same separator, and the concentrates with different grades are obtained.
When the device is used, ore pulp flows axially along the separation groove, a plurality of magnetic poles are arranged in the roller and are sequentially arranged along the flowing direction of the ore pulp, permanent magnets are adopted as magnetic sources for the magnetic poles, the magnetic field intensity of each magnetic pole can be adjusted through a telescopic rod, so that areas with different magnetic field intensities are generated on the surface of the roller, one or more of the magnetic poles can be divided into one group, the surface of the roller is divided into different separation areas axially according to needs, and the magnetic poles correspond to different concentrate grooves, so that minerals in the ore pulp are separated according to the strength of the magnetism, the minerals with strong magnetism are recovered firstly, then the minerals with weak magnetism are recovered in a step separation mode, and a plurality of concentrate products are produced;
in the sorting area formed by one or several magnetic poles, the magnetic field intensity in the circumferential direction can be different, for example, the magnetic minerals are captured in the area with high field intensity by high reduction, the magnetic field intensity in the rinsing water area is reduced as the drum rotates to the rinsing area, and the quartz and low-grade magnetic minerals which are included in the concentrate are removed under the action of the rinsing water, low field intensity and magnetic rolling, so that the concentrate grade is increased.
The device of the invention can reduce the inclusion of the concentrate, improve the grade and the recovery rate of the concentrate, simultaneously realize the concentration and scavenging operation and reduce the energy consumption and the beneficiation cost.
The maximum magnetic field intensity of the magnetic pole surface of the adjustable permanent magnetic system is 1 kA/m-15000 kA/m, and the maximum magnetic field intensity change range of the magnetic pole surface from the feeding end to the discharging end is 1 kA/m-15000 kA/m.
The diameter of the roller is 30 mm-5000 mm, the length is 50 mm-35000 mm, and the sorting roller 3 can rotate forwards or backwards.
When the separation work is started, according to actual ore properties, the distances between the magnetic poles in the adjustable permanent magnetic system and the inner wall of the roller are adjusted, so that ore particles with different ore properties in the separation process are subjected to proper magnetic field force and mechanical force, the rotation direction of the roller is determined, the motor transmission mechanism is started to drive the roller to rotate, water is supplied to the flushing water pipe, the rinsing water pipe and the concentrate flushing water pipe, ore pulp is fed into the separation tank through the ore feeding tank, the water outlet size and the water outlet speed of the flushing water pipe are adjusted, the ore pulp is suspended and controls the flow rate of the ore pulp, the ore pulp flows axially along the separation tank, the magnetic ore particles are captured on the surface of the roller under the action of magnetic force and rotate to an ore unloading area (an area where the concentrate flushing water pipe is located) along with the separation roller, after the magnetic force of the ore unloading area is weakened, the magnetic minerals fall into the concentrate flushing water pipe under the impact of the concentrate, different concentrate grooves can be prepared according to collect the minerals, and a plurality of concentrate products can be selectively received. The non-magnetic minerals flow out from the tailing outlet along with the ore pulp, and the deposited coarse-grained minerals are discharged from the sand discharge port, so that the step separation process of the ores is completed. By adopting the method, ore particles with different magnetism can be sequentially recycled according to the strength of the magnetism, impurities are reduced, the concentrate grade and the recovery rate are improved, a plurality of products are simultaneously produced, and accurate and efficient concentration and scavenging operation can be simultaneously realized according to the properties of the ore, so that the method is an efficient and novel separation method.
The invention has the advantages and technical effects that:
(1) one or more magnetic poles in the adjustable permanent magnetic system of the wet magnetic separator with the adjustable permanent magnetic field intensity can generate separation areas with different magnetic field intensities on the roller by adjusting the distance between the magnetic block and the inner wall of the roller, minerals in ore pulp are adsorbed to different separation areas according to the intensity of magnetism, so that the minerals with strong magnetism are recovered firstly, then the minerals with weak magnetism are recovered, the gradient separation is carried out, a plurality of concentrate products are produced, and the concentration and scavenging operation can be simultaneously realized; or different magnetic field intensities are generated in the circumferential direction of the magnetic poles, and gangue minerals and intergrowths mixed in the concentrate are removed under the action of rinsing water, low field intensity and magnetic rolling, so that the concentrate grade is increased;
(2) a rinsing area and an ore discharging area are respectively arranged at the two sides of the roller, so that ore concentrate is less in impurity inclusion, the ore concentrate grade is improved, and the ore discharging is more complete;
(3) the dispersion water pipe at the bottom of the separation tank can effectively promote the suspension of ore pulp, solve the problem of ore particle sink tank phenomenon, and control the flow speed of the ore pulp, thereby adjusting the separation process of the ore and the separation index;
(4) the arrangement of a plurality of concentrate tanks can simultaneously receive a plurality of concentrate products, and a plurality of final concentrate products can be obtained by selectively combining according to different separation indexes and the separation conditions of each section;
the invention has the advantages of high selectivity, short process flow, long separation zone, convenient production and application, good separation effect and the like, has the characteristics of multi-productization and flexible control of concentrate grade, can realize a high-grade, medium-grade and low-grade multi-concentrate product scheme, can obtain high recovery rate while obtaining high-grade concentrate, and can obtain remarkable economic benefit.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a schematic left-side view of the apparatus of the present invention;
FIG. 3 is a schematic top view of the apparatus of the present invention;
FIG. 4 is a schematic view of a magnetic pole structure of the adjustable permanent magnet system of the present invention;
FIG. 5 is a schematic view showing the state before (A) and after (B) adjustment of the magnetic poles;
in the figure: 1-a roller; 2-magnetic pole; 3-feeding the ore tank; 4-a separation groove; 5-a concentrate tank; 6-flushing a dispersion water pipe; 7-concentrate flushing pipe; 8-rinsing the water pipe; 9-a motor; 10-a frame; 11-a screw; 12-a connecting rod; 13-rotating shaft I; 14-fixing the disc; 15-hydraulic telescopic rod; 16-magnetic blocks; 17-rotating shaft II; 18-screw rod support seat; 19-rinsing water inlet; 20-flushing the water inlet; 21-dispersing the water inlet; 22-a sand discharge port; 23-tailing outlet; 24-a scraper; 25-baffle.
Detailed Description
The process of the present invention is further illustrated by the following examples, but the scope of the invention is not limited thereto.
Example 1: as shown in fig. 1-5, the wet magnetic separator with adjustable permanent magnetic field intensity comprises a roller 1, an ore feeding groove 3, a separation groove 4, 6 concentrate grooves 5, a dispersing water pipe 6, a concentrate flushing water pipe 7, a rinsing water pipe 8, a motor transmission mechanism, a frame 10, a magnetic declination adjusting mechanism and an adjustable permanent magnetic system, wherein the separation groove 4 is welded and fixed on the top of the frame 10, 120 dispersing water pipes 6 (the diameter of each dispersing water pipe is 10mm, and each water pipe is provided with a hole with the diameter of 2 mm) are uniformly distributed at the bottom of the separation groove 4 along the axial direction side by side, one end of each dispersing water pipe 6 is connected with a water source, and the other end is closed; the separation groove is a semicircular groove with the diameter of 1300mm, the length of 2700mm and the gradient of the bottom box of 4 degrees, the ore feeding groove 3 is arranged at one axial end of the separation groove 4, the tailing outlet 23 is arranged at the other end of the separation groove 4, and the bottom of the other end of the separation groove 4 is provided with a sand discharge port 22;6 concentrate tanks 5 are fixed on the frame and positioned at one side of the separation tank 4, a scraper 24 is obliquely fixed at one side of the top of the concentrate tank 5 close to the roller and is matched with the roller for ore unloading, 3 concentrate flushing water pipes 7 are fixed at one side of the frame and positioned above the concentrate tanks 5, and 3 rinsing water pipes 8 are fixed at the other side of the frame and positioned above the separation tank 4; the concentrate flushing water pipe 7 and the rinsing water pipe 8 are both pipelines with holes, one end of each pipeline is connected with a water source, and the other end of each pipeline is closed;
the roller 1 is a sealed cylinder, the diameter of the roller is 1200 mm, the length of the roller is 2500 mm, two ends of the roller are respectively fixed with a rotating shaft II 17,2 rotating shafts II 17 are respectively movably arranged in bearing seats at the left end and the right end of the rack, the lower part of the roller is positioned in the sorting tank 4, the rotating shaft II 17 at the right end of the roller is fixed with a belt wheel, the motor 9 is fixed on the rack, the output shaft of the motor is fixed with another belt wheel, the 2 belt wheels are connected through a belt, and the motor drives the roller to rotate; the adjustable permanent magnetic system is composed of 36 magnetic poles 2 which are sleeved and fixed on a rotating shaft I13, each magnetic pole comprises a fixed disc 14, 14 telescopic rods 15 and 14 magnetic blocks 16, the magnetic wrap angle of the magnetic pole is 238 degrees, the magnetic blocks of the first 18 magnetic poles are ferrite permanent magnetic blocks, the magnetic blocks of the last 18 magnetic poles are neodymium iron boron magnetic blocks, the fixed disc 14 is fixed on the rotating shaft I13, one end of each 14 telescopic rod 15 is fixed at the outer edge of the fixed disc 14, one magnetic block 16 is fixed on each push rod of each 15, two ends of the rotating shaft I13 are arranged on a rack through bearing seats, and the adjustable permanent magnetic system is arranged in the roller 1 through a rotating shaft I; a magnetic declination angle adjusting mechanism is arranged at one end of the frame opposite to the motor, the magnetic declination angle adjusting mechanism comprises a screw rod 11 and a connecting rod 12, one end of the screw rod is arranged in a screw rod supporting seat 18 and is in threaded fit with the screw rod, the other end of the screw rod is connected with one end of the connecting rod through a pin, the other end of the connecting rod is fixed at one end of a rotating shaft I13, and the magnetic declination angle is 15 degrees; the adjustable distance between the magnetic block and the inner wall of the roller is 40mm;
the device is adopted to carry out continuous stage separation on magnetite with fineness of-200 meshes accounting for 70% and iron grade accounting for 28% in a certain area in Yunnan, and the method specifically comprises the following steps:
when the separation work starts, firstly, according to the actual ore properties, 36 magnetic poles are divided into 6 groups of 6, 6 and 6, the distance between the magnetic blocks and the inner wall of the roller is adjusted through the telescopic rods, the magnetic field strength of each group is 40, 60, 100, 150, 200 and 300kA/m,6 groups of magnetic poles form 6 separation areas on the surface of the roller and correspond to 6 concentrate tanks; starting a motor 9, enabling a roller to rotate at a speed of 20r/min, enabling the roller to pass through a rinsing area (an area where a rinsing water pipe is located) and then to an ore unloading area, enabling ore pulp to be fed into a separation groove 4 through an ore feeding groove 3, enabling the bottom of the separation groove 4 to be provided with a flushing water pipe 6, controlling the water outlet speed through the flushing water pipe to suspend the ore pulp and controlling the flow rate of the ore pulp to be 1m/s, enabling the ore pulp to flow along the axial direction of the separation groove, enabling ore grains with different magnetism to be captured in different areas on the surface of the roller under the magnetic force action of different magnetic fields and rotate to the rinsing area along with the roller, removing quartz and low-grade magnetic minerals mixed in ore concentrates under the action of rinsing water and magnetic rolling, enabling the ore pulp to enter the ore unloading area (an area where the ore concentrate rinsing water pipe and a scraper are located), enabling the magnetic force to disappear after the ore pulp rotates to the ore unloading area, enabling different magnetic minerals to fall into an ore concentrate groove under the action of the outlet water impact of the concentrate flushing water pipe and the scraper, and selectively receiving 6 ore concentrates; the non-magnetic minerals flow out of the tailing outlet 23 along with the ore pulp; the sand discharge port 22 can discharge excessive deposited coarse-grained minerals, so that the phenomenon of blockage of a settling tank is prevented; 6 products with different iron grades, such as iron ore concentrate 1, iron ore concentrate 2, iron ore concentrate 3, iron ore concentrate 4, iron ore concentrate 5, middling 1 and the like, with iron grades of 68.18%, 67.51%, 66.67%, 64.81%, 62.80% and 39.76% respectively and recovery rates of 17.01%, 20.72%, 19.78%, 15.49%, 9.03% and 3.94% respectively, are finally obtained at one time through primary separation.
Example 2: the structure of the device is the same as that of embodiment 1, and the difference of the device in the embodiment is that a baffle 25 is arranged between concentrate tanks, the baffle is fixed on a scraper, minerals in different sorting areas are prevented from entering other concentrate tanks, a telescopic rod is a hydraulic telescopic rod, an adjustable permanent magnetic system consists of 35 magnetic poles 2 sleeved and fixed on a rotating shaft I13, each magnetic pole comprises a fixed disk 14, 14 hydraulic telescopic rods and 14 magnetic blocks 16, the magnetic blocks 16 are fixed on a push rod of the hydraulic telescopic rod through a magnetic conduction plate, the first 11 magnetic blocks 16 in the clockwise direction of the circumference of each magnetic pole are neodymium iron boron magnetic blocks, are enrichment areas and have the same magnetic field intensity, the last 3 magnetic blocks 16 are ferrite magnetic blocks, are rinsing areas and have the same magnetic field intensity, and the magnetic field intensity of the rinsing areas is lower than that of the enrichment areas;
the device is adopted to carry out continuous stage separation on vanadium titano-magnetite with 85 percent of minus 325 meshes and 24.52 percent of iron grade in a certain mining area of the Panzhihua, and the method comprises the following steps:
when the separation work starts, 35 magnetic poles are divided into 7 groups of 5, 5 and 5 according to the actual ore properties, the magnetic field strength of each group of enrichment regions is respectively 100, 150, 200, 250, 300, 400 and 600kA/m, and the magnetic field strength of each group of rinsing regions is respectively 50, 100, 150, 200, 200, 200 and 200kA/m; the distance between the magnetic blocks and the inner wall of the roller is adjusted through a hydraulic telescopic rod, and 7 groups of magnetic poles form 7 sorting areas on the surface of the roller and correspond to 7 concentrate tanks; starting a motor 9, setting the rotation speed of the roller to be 20r/min, feeding ore pulp into a separation tank through an ore feeding tank, arranging a dispersing water pipe 6 at the bottom of the separation tank 4, controlling the water outlet speed to suspend the ore pulp through the dispersing water pipe and controlling the flow rate of the ore pulp to be 1m/s, enabling the ore pulp to flow along the axial direction of the separation tank, capturing ore particles with different magnetism in different areas on the surface of the roller under the magnetic force action of different magnetic fields, rotating to an ore unloading area (an area where the concentrate washing water pipe and a scraper are located) along with the roller, enabling the magnetic force to disappear after the ore particles rotate to the ore unloading area, enabling different magnetic minerals to fall into a concentrate tank under the water outlet impact of the concentrate washing water pipe and the scraper action, and selectively receiving 7 concentrate products by the concentrate tank; the non-magnetic minerals flow out of the tailing outlet 23 along with the ore pulp; the sand discharge port 22 can discharge excessive deposited coarse-grained minerals, so that the phenomenon of blockage of a settling tank is prevented; through one-time separation, 7 products with different iron grades, such as iron concentrate 1, iron concentrate 2, iron concentrate 3, iron concentrate 4, iron concentrate 5, middling 1 and middling 2, and the like, with iron grades of 58.13%, 57.04%, 55.69%, 53.18%, 50.72%, 46.90% and 18.67% respectively, and recovery rates of 12.83%, 20.04%, 18.46%, 14.38%, 10.43, 8.63% and 2.80% respectively, can be obtained at one time.
Claims (7)
1. The utility model provides a permanent magnetism magnetic field intensity adjustable wet-type magnet separator, includes cylinder (1), ore feeding groove (3), separation groove (4), concentrate wash pipe (7), motor drive mechanism, frame (10), magnetic declination adjustment mechanism, its characterized in that: the device also comprises an adjustable permanent magnetic system, more than 2 concentrate tanks (5), a dispersing water pipe (6) and a rinsing water pipe (8);
the separation tank (4) is fixed on the top of the rack (10), a plurality of flushing and dispersing water pipes (6) are uniformly distributed in parallel at the bottom in the separation tank (4) along the axial direction, more than 2 concentrate tanks (5) are fixed on the rack and positioned on one side of the separation tank (4), a scraper is obliquely fixed on one side of the top of the concentrate tanks (5) close to the roller and matched with the roller for ore unloading, more than 1 concentrate flushing water pipe (7) is fixed on one side of the rack and positioned above the concentrate tanks (5), and more than 1 rinsing water pipe (8) is fixed on the other side of the rack and positioned above the separation tank (4); the roller (1) is movably arranged on the rack through a rotating shaft II (17), the lower part of the roller is positioned in the sorting groove (4), the adjustable permanent magnetic system is arranged in the roller (1) through a rotating shaft I (13), and the motor transmission mechanism is fixed on one end of the rack and connected with one end of the rotating shaft II to drive the roller to rotate; the other end of the rack is provided with a magnetic declination adjusting mechanism, and the magnetic declination adjusting mechanism is connected with the adjustable permanent magnetic pole through a rotating shaft I; the ore feeding groove (3) is arranged at one axial end of the separation groove, the tailing outlet (23) is arranged at the other axial end of the separation groove (4), and the bottom of the other end of the separation groove (4) is provided with a sand discharge port (22); the dispersing water pipe (6), the concentrate flushing water pipe (7) and the rinsing water pipe (8) are all pipelines with holes, one end of each pipeline is connected with a water source, and the other end of each pipeline is closed.
2. The wet magnetic separator with adjustable permanent magnetic field strength of claim 1, wherein: adjustable permanent magnetism magnetic system comprises magnetic pole (2) that a plurality of suit was fixed in pivot I, and every magnetic pole includes fixed disk (14), a plurality of telescopic link (15), a plurality of magnetic path (16), and fixed disk (14) are fixed in pivot I (13), and a plurality of telescopic link (15) one end is fixed in fixed disk (14) periphery department, is fixed with magnetic path (16) on the push rod of telescopic link (15), and the magnetic wrap angle of magnetic pole is 1-360.
3. The wet magnetic separator with adjustable permanent magnetic field strength of claim 2, characterized in that: the magnetic block (16) is fixed on the push rod of the telescopic rod (15) through a magnetic conduction plate, and the magnetic block (16) is one or more of a ferrite permanent magnet, a neodymium iron boron magnet, a samarium cobalt magnet and an aluminum nickel cobalt magnet.
4. The wet magnetic separator with adjustable permanent magnetic field strength of claim 1, wherein: the motor transmission mechanism comprises a motor (9) and 2 belt wheels or gears, the motor is fixed on the rack, one belt wheel or gear is fixed on an output shaft of the motor, the other belt wheel or gear is fixed at one end of the rotating shaft II, and the 2 belt wheels or gears are connected through a belt or a chain.
5. The wet magnetic separator with adjustable permanent magnetic field strength of claim 1, wherein: magnetic declination adjustment mechanism includes screw rod (11), connecting rod (12), and screw rod one end sets up in screw rod supporting seat (18) and rather than screw-thread fit, and the screw rod other end is connected with connecting rod one end through the round pin, and the connecting rod other end is fixed and is served in I of pivot.
6. The wet magnetic separator with adjustable permanent magnetic field strength of claim 1, wherein: the separation tank (4) is a semicircular groove, a baffle is arranged between the concentrate tanks (5), a rinsing water inlet (19), a flushing water inlet (20) and a flushing water inlet (21) are arranged on the rack, the rinsing water inlet (19) is communicated with a rinsing water pipe (8) through a pipeline, the flushing water inlet (20) is communicated with a concentrate flushing water pipe (7) through a pipeline, and the flushing water inlet (21) is communicated with a flushing water pipe (6) through a pipeline.
7. The use method of the wet magnetic separator with the adjustable permanent magnetic field strength of any one of claims 1 to 6 is characterized in that: the ore pulp is added into the separation tank from the ore feeding tank, the dispersion water pipe at the bottom of the separation tank can promote the suspension of the ore pulp and control the flow speed of the ore pulp in the separation tank, the ore pulp flows towards the direction of a tailing outlet along the axial direction of the separation tank, a plurality of magnetic poles of an adjustable permanent magnetic system in the roller can adjust the distance between the magnetic block and the inner wall of the roller through telescopic rods, so that separation areas with different magnetic field strengths are generated on the roller, the different separation areas correspond to different concentrate tanks, different magnetic minerals are adsorbed to different separation areas on the surface of the roller and rotate along with the roller, when the roller adsorbed with the magnetic minerals passes through the rinsing water pipe, the rinsing water pipe is used for rinsing and impurity removal of the concentrate, when the concentrate washing water pipe area enters, the ore is unloaded under the action of the concentrate washing water pipe and the scraper plate, the different magnetic minerals enter the different concentrate tanks, and the minerals with different magnetic strengths are respectively separated and recovered in the same separator, and the concentrates with different grades are obtained.
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| CN202211043729.8A CN115318433A (en) | 2022-08-30 | 2022-08-30 | Wet magnetic separator with adjustable permanent magnetic field intensity and use method |
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| CN202211043729.8A CN115318433A (en) | 2022-08-30 | 2022-08-30 | Wet magnetic separator with adjustable permanent magnetic field intensity and use method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646645A (en) * | 2022-12-26 | 2023-01-31 | 潍坊工程职业学院 | A rotate electromagnetic separation equipment for iron-bearing mineral screening |
| CN116474939A (en) * | 2023-06-21 | 2023-07-25 | 临朐鼎工磁电科技有限公司 | Magnetic separator and magnetic separation method |
-
2022
- 2022-08-30 CN CN202211043729.8A patent/CN115318433A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646645A (en) * | 2022-12-26 | 2023-01-31 | 潍坊工程职业学院 | A rotate electromagnetic separation equipment for iron-bearing mineral screening |
| CN116474939A (en) * | 2023-06-21 | 2023-07-25 | 临朐鼎工磁电科技有限公司 | Magnetic separator and magnetic separation method |
| CN116474939B (en) * | 2023-06-21 | 2023-11-21 | 临朐鼎工磁电科技有限公司 | Magnetic separator and magnetic separation method |
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