CN111905924A - Dry-type crawler-type magnetic separator for coarse grain preselection and magnetic separation method - Google Patents
Dry-type crawler-type magnetic separator for coarse grain preselection and magnetic separation method Download PDFInfo
- Publication number
- CN111905924A CN111905924A CN202010577631.5A CN202010577631A CN111905924A CN 111905924 A CN111905924 A CN 111905924A CN 202010577631 A CN202010577631 A CN 202010577631A CN 111905924 A CN111905924 A CN 111905924A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- crawler
- type
- ore
- dry
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000006148 magnetic separator Substances 0.000 title claims abstract description 27
- 238000007885 magnetic separation Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000000926 separation method Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 63
- 239000002245 particle Substances 0.000 claims description 21
- 230000005389 magnetism Effects 0.000 claims description 18
- 230000011218 segmentation Effects 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 241001417527 Pempheridae Species 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000004094 preconcentration Methods 0.000 claims description 4
- 239000011362 coarse particle Substances 0.000 claims 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 68
- 229910052742 iron Inorganic materials 0.000 abstract description 34
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 description 11
- 239000002699 waste material Substances 0.000 description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 239000012141 concentrate Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 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
- 239000010959 steel Substances 0.000 description 3
- 239000010926 waste battery Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
- B03C1/18—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation
- B03C1/20—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation in the form of belts, e.g. cross-belt type
-
- 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
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/12—Sieving bulk materials during loading or unloading
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a coarse grain preselection dry-type crawler-type magnetic separator and a magnetic separation method, wherein the coarse grain preselection dry-type crawler-type magnetic separator comprises a magnetic attraction type crawler device and an ore separation hopper; the magnetic attraction type crawler device is divided into at least three sections along the transmission direction, wherein the first section along the transmission direction is arranged along the horizontal direction, the subsequent sections are lifted upwards along the transmission direction, and each section forms different angles with the horizontal direction and the angles are sequentially increased; the number of the ore separating funnels is reduced by one from the number of the subsections, the ore separating funnels are arranged from the second subsection, and one ore separating funnel is arranged below each subsection. The invention can realize continuous magnetic separation of simultaneous working of multiple sections of operation, is convenient to operate and is beneficial to industrial application. The recycling rate of iron ore resources can be improved, and the method has important effects and significance for reducing cost, improving efficiency and improving benefits of mine enterprises.
Description
Technical Field
The invention relates to the technical field of mineral processing and magnetic separators, in particular to a coarse grain pre-separation dry-type crawler-type magnetic separator and a magnetic separation method, which are used for treating dry pre-separation waste disposal of magnetite with the material granularity of 0.15-12 mm, recycling of 1-5 mm iron shells in waste batteries and recycling of 1-5 mm iron components in waste circuit boards before grinding.
Background
With the development of the steel industry, china has become the world's largest iron ore entry country beyond Japan. In recent years, the domestic iron ore yield rises to some extent, but the demand cannot be met. Calculated according to the metal quantity, the quantity of imported iron ore exceeds the domestic iron ore yield. The average price of imported iron ores is increased dramatically, and the method cannot be closely related to the huge demand of China on iron ores. For the improvement of the dependence degree of imported iron ores, the foreign exchange burden is increased, and the dependence degree becomes a great hidden danger of economic safety of the steel industry in China. Natural resources have already constituted a fundamental factor affecting the industrialization and modernization of the country, playing a very important role in the development of the country. Therefore, the method increases the iron ore reserves available in China, utilizes the iron ore resources in China to the maximum extent, and improves the security of the iron ore resources in China.
Because the mining and mineral dressing costs of foreign iron ore are low, in the situation, the sustainable development of the metallurgical mine industry of China needs to be realized, and the sudden breakthroughs are needed to reduce the discharge amount of wastes, reduce the energy consumption and improve the utilization rate of mineral resources. Through the research on the efficient ore dressing technology of the extremely poor iron ore, the originally waste resources are reused, so that the method has huge economic benefits under the current market conditions, expands the iron ore resource range of China, is beneficial to environmental protection and has remarkable social benefits. With the rapid development of the steel industry at present, ores with high grade and easy separation are rare, and ores with low grade and fine disseminated granularity which are difficult to separate inevitably become the main ore sources of domestic ore dressing plants. In order to implement the mineral separation energy-saving measure of 'more crushing and less grinding', a plurality of large and medium-sized domestic mines adopt fine crushing and ultra-fine crushing mineral separation process equipment such as cone crushers, high-pressure roller mills and the like. These devices can control the mineral particle size to 0.15-12 mm. It is counted that 20% -50% of mineral gangue has been dissociated when the ore is crushed to-12 mm in size.
The iron shell in the waste battery and the iron component in the waste circuit board are precious resources, and the device can recycle the iron shell and the iron component, so that the damage of waste to the ecological environment can be reduced, and the resources are saved.
Disclosure of Invention
The invention aims to provide a crawler-type magnetic separation device and a magnetic separation method which can realize coarse grain preselection quickly and efficiently at low cost so as to realize continuous magnetic separation of multi-section operation and simultaneous work, are convenient to operate and are beneficial to industrial application.
It is an object of the present invention to provide an efficient dry magnetic-gravity combined separation device for undersize or between high pressure roller mill discharge and first stage mill in a classical three-stage one closed circuit crushing process. Another object of the present invention is to provide a high-efficiency dry-type magnetic-gravity composite field sorting apparatus for removing the waste rock with an excessive mixing rate in the process of mining the magnetite ore and improving the grade of the ore entering a sorting plant.
In order to achieve the technical purpose, the technical scheme of the invention is that,
a dry crawler-type magnetic separator for pre-separation of coarse grains comprises a magnetic adsorption type crawler device and an ore separation hopper, wherein a magnetic system is embedded in a crawler; the magnetic attraction type crawler device is divided into at least three sections along the transmission direction, wherein the first section along the transmission direction is arranged along the horizontal direction, the subsequent sections are lifted upwards along the transmission direction, and each section forms different angles with the horizontal direction and the angles are sequentially increased in an increasing mode so as to change the magnetic force component force in the vertical direction; the number of the ore separating funnels is reduced by one from the number of the subsections, the ore separating funnels are arranged from the second subsection, and one ore separating funnel is arranged below each subsection to receive materials falling from the subsections.
The coarse grain preselection dry-type crawler-type magnetic separator further comprises a feeding conveying belt for conveying materials to be separated, the conveying direction of the feeding conveying belt is the same as that of the magnetic attraction type crawler device, and the tail end of the feeding conveying belt in the conveying direction is positioned below the first section of the magnetic attraction type crawler device; and an ore separation hopper is also arranged below the end position of the feeding conveying belt.
The magnetic attraction type crawler device comprises an internally embedded magnetic system type crawler, a transmission roller, a turnabout roller and a first turning press wheel set; the embedded magnetic system type crawler belt is wound between a transmission roller and a bend roller to form a conveying crawler belt with two sides running in a circulating mode, the transmission roller is driven by a motor to rotate along the axis of the transmission roller and drives the bend roller to rotate through the embedded magnetic system type crawler belt, the transmission roller and the bend roller are arranged in the horizontal direction in a high-low mode, the first bend roller set comprises bend rollers, the number of the bend rollers is one less than that of the magnetic type crawler belt device in a subsection mode, the first bend roller set is arranged on the back face of the surface, used for adsorbing and conveying materials to be sorted, of the embedded magnetic system type crawler belt, the heights of the bend rollers in the horizontal direction are different, and the embedded magnetic system type crawler belt is enabled to form sections with different angles on one side, used for conveying the materials to be sorted.
The coarse grain preselection dry-type crawler-type magnetic separator further comprises a second direction-changing pressure wheel set, the second direction-changing pressure wheel set is arranged on the surface of the other side of the embedded magnetic system type crawler belt, which is opposite to one side where materials to be separated are transmitted, and the height of each direction-changing pressure wheel is different in the horizontal direction and corresponds to the position of each direction-changing pressure wheel of the first direction-changing pressure wheel set, so that two sides of the embedded magnetic system type crawler belt form mutually parallel segments.
A coarse grain preselection dry-type crawler-type magnet separator, each ore separation funnel between all be equipped with the baffle, the baffle upwards extend to the demarcation department of each segmentation of formula crawler attachment is inhaled to magnetism, and inhale formula crawler attachment between the reservation have be used for letting the material that is adsorbed on formula crawler attachment to inhale the formula crawler attachment to pass through the clearance.
A coarse grain preselection dry-type crawler-type magnet separator, magnetism inhale formula crawler attachment and be equipped with the head sweeper at the end along transmission direction, and be equipped with the baffle that upwards extends to magnetism and inhale formula crawler attachment along transmission direction's end department on the last branch ore deposit funnel's that corresponds terminal position, the head sweeper for hugging closely the scraper blade that magnetism was inhaled formula crawler attachment and is set up to will adsorb and strike off to branch ore deposit funnel in the material that does not drop on the formula crawler attachment.
A dry crawler-type magnetic separation method for coarse grain preselection is characterized in that a magnetic type crawler device with a magnetic absorption function is adopted, the magnetic type crawler device is divided into at least three sections along a transmission direction, wherein the first section along the transmission direction is arranged along the horizontal direction, the subsequent sections are lifted upwards along the transmission direction, and each section forms different angles with the horizontal direction and the angles are sequentially increased; meanwhile, from the second subsection, an ore separation funnel is arranged under each subsection respectively, so that mixed materials with different magnetism can be separated.
The coarse grain preselection dry-type crawler-type magnetic separation method further comprises the step of arranging a feeding conveying belt for conveying materials to be separated, wherein the conveying direction of the feeding conveying belt is the same as that of the magnetic type crawler device, and the tail end of the feeding conveying belt in the conveying direction is positioned below the first section of the magnetic type crawler device; an ore separation hopper is arranged below the end position of the feeding conveying belt.
The coarse grain preselecting dry crawler type magnetic separation method further comprises the step of adjusting the segmentation angle according to the particle size of the material, when the material is large particles of 3-12 mm, the angle between each segmentation is gradually increased to 5-10 degrees, and when the material is small particles of 0.15-3 mm, the angle between each segmentation is gradually increased to 10-20 degrees.
The coarse grain preselection dry-type crawler-type magnetic separation method further comprises the step of adjusting the magnetic field intensity acting on the material according to the particle size of the material, wherein when the material is large particles with the particle size of 3-12 mm, the magnetic field intensity is adjusted to be 300-600 mT, and when the material is small particles with the particle size of 0.15-3 mm, the magnetic field intensity is adjusted to be 150-300 mT.
The invention has the technical effects that: through organically combining magnetic field force and gravity, separation of magnetic iron ore and non-magnetic gangue minerals can be effectively realized, and roughing operation, first selection operation and second selection operation can be simultaneously completed. The invention can realize coarse grain preselection rapidly and efficiently with low cost, can realize continuous magnetic separation of simultaneous working of multiple sections of operations, is convenient to operate and is beneficial to industrial application. The method can improve the recovery utilization rate of iron ore resources, and has important effects and significance for reducing cost, improving efficiency and improving benefits of mine enterprises.
Drawings
FIG. 1 is a schematic structural view of a magnetic-type crawler device and a mineral separation hopper according to the present invention;
FIG. 2 is a schematic view of the present invention after the addition of a feed conveyor belt;
FIG. 3 is a schematic process flow diagram of example 1 of the present invention;
FIG. 4 is a schematic process flow diagram of example 2 of the present invention;
wherein, 1 is magnetism and inhales formula crawler attachment, 2 is embedded magnetism system formula crawler, 3 is three-in-one variable frequency gear motor who takes the backstop, 4 is driving pulley, 5 is the bend pulley, 6 is first change to pressure wheelset, 7 is second change to pressure wheelset, 8 is straining device, 9 is the head sweeper, 10 is off tracking alarm device, 11 is the baffle, 12 is the concentrate funnel, 13 is the middlings funnel, 14 is the tailing funnel, 15 is adjustable angle telescopic joint, 16 is feed conveyer belt.
Detailed Description
The following examples are intended to further illustrate the present disclosure, but not to limit the scope of the claims.
The coarse grain preselection dry-type crawler-type magnetic separator referred to in the following embodiment is shown in fig. 2 and comprises a magnetic attraction type crawler device, an ore separation hopper and a feeding conveying belt for conveying materials to be separated. Magnetic type crawler attachment in this embodiment has divided into three segmentation along direction of transfer, during the in-service use, still can set up more segmentation as required. And means for sorting out magnetic and non-magnetic material if only two segments are provided. In this embodiment, the first section in the transport direction is arranged horizontally, and the subsequent sections are raised upwards in the transport direction, wherein the angle between the second section and the horizontal plane is 30 ° and the angle of the third section is 60 °. Feed conveyor belt's direction of transmission is the same with magnetism formula crawler attachment, and feed conveyor belt is located magnetism along direction of transmission's end position and inhales formula crawler attachment first segmentation below to it can be inhaled by the material that magnet adsorbs to inhale that formula crawler attachment will feed conveyor belt on the transmission comes. An ore separation funnel is arranged below the end position of the feeding conveying belt and serves as a tailing funnel, and the tailing funnel is also positioned below the first section of the magnetic type crawler device. And a ore separation funnel is also arranged below the second section to be used as a middling funnel. And an ore separation funnel arranged below the third section is used as a concentrate funnel. Formula crawler attachment is inhaled to magnetism like this embodiment, its direction of operation, also the track roll direction, and feed conveyor belt direction of operation is opposite, and feed conveyor belt direction of operation is clockwise promptly, and formula crawler attachment direction of operation is anticlockwise. Since the two are disposed up and down, the transmission directions on the opposite surfaces of the two are consistent.
This embodiment has adopted feed conveyor belt as the material source, in the actual processing, also can not set up feed conveyor belt, but directly pile the material that needs the letter sorting earlier in the first segmentation below of magnetic type crawler attachment, then start magnetic type crawler attachment, the purpose of letter sorting can be realized equally. If the arrangement mode is adopted, the ore separating funnel does not need to be arranged under the first section, and the left material is the tailings after the sorting is finished.
Simultaneously for the different materials of better collection sorting out, all be equipped with the baffle between each ore deposit funnel, the baffle upwards extends to the demarcation department of each segmentation of formula crawler attachment is inhaled to magnetism, and with inhale the formula crawler attachment between reserve have be used for letting the material that is adsorbed on the formula crawler attachment of magnetism to pass through the clearance. The baffle that sets up like this can effectually prevent that the material from falling in other ore deposit hoppers because of inertia. Magnetism is inhaled formula crawler attachment simultaneously and is equipped with the head sweeper at the end along direction of transmission, and is equipped with the baffle that upwards extends to magnetism and inhale formula crawler attachment along direction of transmission's end department on the last end position of branch ore deposit funnel that corresponds, and the scraper blade that formula crawler attachment set up is inhaled for hugging closely to the head sweeper to the material that will adsorb and inhale not dropped on the formula crawler attachment strikes off to dividing the ore deposit funnel in.
The magnetic type crawler device of the embodiment comprises an embedded magnetic system type crawler, a transmission roller, a turnabout roller, a first turnabout pressure wheel set and a second turnabout pressure wheel set. The embedded magnetic system type crawler belt is wound between the transmission roller and the turnabout roller and forms a conveying crawler belt with two sides running circularly. The transmission roller is driven by a motor to rotate along the axis of the transmission roller, and the driven redirection roller rotates through the embedded magnetic system type crawler belt. The motor of the embodiment is a three-in-one variable frequency speed reducing motor, is used for driving a transmission roller of the head, and changes the running direction of the crawler belt through a turnabout roller. Meanwhile, the tightness of the whole embedded magnetic system type track is adjusted through the tension device arranged on one side of the transmission roller, and the deviation alarm device which plays a role in alarming when the track deviates is arranged. In order to prevent the whole lower crawler surface section of the embedded magnetic system type crawler from causing the reversal of the whole transmission system when attracting ores through magnetic force, the motor is also provided with a backstop. The linear velocity of the track surface of the embodiment is 1.25-2.5 m/s under the driving of the motor. The transmission roller and the direction-changing roller are arranged in a horizontal direction in a high-low mode. The first redirecting pressing wheel set of the embodiment comprises two redirecting pressing wheels, and if the number of the segments is more, more redirecting pressing wheels are arranged according to the requirement. The first direction-changing pinch roller group is arranged on the back of the surface of the embedded magnetic system type crawler belt for adsorbing and conveying the materials to be sorted, the height of each direction-changing pinch roller is different in the horizontal direction, and the embedded magnetic system type crawler belt forms sections with different angles on one side for conveying the materials to be sorted. The embedded magnetic system type caterpillar band is provided with the magnetic system units with different polarities, namely the magnetic system units with opposite polarities which are uniformly distributed at intervals, so that the situation that if only one magnetic substance with one polarity is arranged on the surface of the caterpillar band, when materials are magnetic, the materials can not be adsorbed due to the fact that like poles repel each other can be avoided. The magnetic system unit is made of N35-N45 grade neodymium iron boron material, and the residual magnetism Br = 1.2-1.7T.
In order to make the two sides of the embedded magnetic system type crawler belt parallel and prevent the problems of roller slipping and the like, the embodiment is further provided with a second direction-changing pressure wheel set, the second direction-changing pressure wheel set is arranged on the surface of the other side of one side of the embedded magnetic system type crawler belt, which is opposite to the side where materials to be sorted are transmitted, and the height of each direction-changing pressure wheel in the horizontal direction is different and corresponds to the position of each direction-changing pressure wheel of the first direction-changing pressure wheel set, so that the two sides of the embedded magnetic system type crawler belt form mutually parallel sections.
In the embodiment, the embedded magnetic system type track angle adjusting system is realized by adjusting the spatial positions of four redirection pressing wheels. The redirection pressing wheels in each redirection pressing wheel set are connected through expansion joints to form a group of redirection pressing wheel sets. Each of the redirecting wheels can be positioned by conventional means, such as a fixing rod or other similar device capable of stretching and positioning, and can be realized by known technical means as required by those skilled in the art.
In this embodiment, when the particle size of material is different, can adjust segmentation angle according to specific material particle size to realize the effective letter sorting to different materials. If the material is large particles of 3-12 mm, the angle between each section is gradually increased to 5-10 degrees. When the material is small particles of 0.15-3 mm, the angle between each section is gradually increased to 10-20 degrees.
Under the condition that the magnetic field intensity can possibly generate different adsorption force on materials with different particle sizes, the magnetic field intensity acting on the materials can be adjusted according to the particle sizes of the materials. If the material is large particles of 3-12 mm, the magnetic field intensity is adjusted to 300-600 mT, and if the material is small particles of 0.15-3 mm, the magnetic field intensity is adjusted to 150-300 mT. The specific magnetic field intensity adjustment mode is various, for example, the magnetic system unit under the embedded magnetic system type crawler belt is directly replaced, and the magnetic system unit with different residual magnetism is replaced to adjust the magnetic field intensity. The thickness of the crawler belt embedded with the magnetic system type crawler belt can be changed, so that the magnetic field intensity acted on the material is changed. The particular means of varying the magnetic field strength can also be implemented in a number of known ways, and can be selected by those skilled in the art as desired.
The process for processing the materials comprises the following steps: the three-in-one variable-frequency speed reduction motor and the transmission roller are started at first, the whole embedded magnetic system type crawler belt is driven to run stably, the distance between the embedded magnetic system type crawler belt and the feeding conveying belt is set to be 150mm, and the magnetic field intensity of the magnetic separator is adjusted.
And then starting the feeding conveyor belt to feed ore, wherein the speed of the feeding conveyor belt is the same as the running speed of the embedded magnetic system type crawler belt, and the feeding conveyor belt and the embedded magnetic system type crawler belt are relatively static. After the ore is from the feed inlet to the conveyor belt head, the magnetic field force that first subsection produced attracts magnetic ore, continues to move toward the second subsection, and non-magnetic ore falls in the tailing funnel owing to can not receive the effect of magnetic force. And the component force of the magnetic field attraction force on the magnetic ore in the second section in the vertical direction is reduced, and the magnetic system ore with relatively low grade becomes middling and falls into a middling funnel. And the ore with relatively high grade continuously runs along with the crawler of the magnetic separator and enters the third section, the magnetic force generated by the magnetic system of the magnetic section is increased along with the increase of the angle, the magnetic component force in the vertical direction is further reduced, the ore with high grade becomes concentrate, the concentrate falls into the concentrate funnel, and all the ore which is still adsorbed is swept into the concentrate funnel by the head sweeper. Thereby realizing the multi-section operation separation of the materials which can be magnetically adsorbed and other materials.
Example 1
The magnetic iron ore is crushed in a three-stage and one-closed circuit, the particle size P95 of the product is less than 12mm, and the grade is 21.45%. The dry type pre-concentration is carried out on the coarse grain dry type crawler type magnetic separator, and the process flow is shown in figure 3:
the yield of the dry magnetic concentrate of the crawler-type magnetic separator is 29.04%, the grade is 33.50%, and the recovery rate is 45.36%; the yield of middlings is 42.34%, the grade is 22.11%, and the recovery rate is 43.63%; the yield of tailings was 28.62%, the grade was 8.25%, and the recovery was 11.01%.
Example 2
The product of the magnetic iron ore which is crushed in a three-stage and one-closed circuit is crushed by a high-pressure roller mill, the granularity P95 of the product is less than 5mm, and the grade of the product is 23.58%. The dry type pre-concentration is carried out on the coarse grain dry type crawler type magnetic separator, and the process flow is shown in figure 4:
the yield of dry magnetic concentrate of the crawler-type magnetic separator is 31.66%, the grade is 34.60%, and the recovery rate is 46.45%; the yield of middlings is 37.49%, the grade is 27.54%, and the recovery rate is 43.79%; the yield of tailings was 30.85%, the grade was 7.46%, and the recovery was 9.76%.
Example 3
The crawler-type magnetic separator is utilized to carry out dry magnetic separation, iron shells with the content of about 23% -26% in the waste lead-acid storage batteries and the waste zinc-manganese batteries are crushed to 1-5 mm in the previous working procedure and are separated from other plastic covers, the iron shells, carbon rods, zinc skins, residues and the like, the recovery rate of the magnetic separation reaches more than 90%, and finally the iron shells which are magnetically separated are sent to a smelting plant for iron recovery.
Example 4
The crawler-type magnetic separator is used for dry magnetic separation and is used for an electronic garbage separation process, iron components with the thickness of 1-5 mm of the waste circuit board are separated from electronic garbage, and the magnetic separation recovery rate reaches over 90 percent.
From the above embodiments, it can be seen that the present invention can be used in a dry type pre-selection and waste disposal method for processing magnetite ore for multi-stage separation before grinding. Meanwhile, the method can also be used for recycling iron shells in waste batteries and iron components of waste circuit boards. After being correspondingly modified, the magnetic separator can also be used for sorting other mixed materials with different magnetism.
The preselection magnetic separator is utilized to remove the part of the fully dissociated gangue in advance, so that the effective processing capacity of the ball mill can be improved, and the capacity can be increased; meanwhile, the pre-selected coarse tailings can be used as building materials instead of entering a tailing pond for stacking. The method can improve the economic benefit of ore dressing enterprises, and also achieve the purposes of saving energy, reducing emission and reasonably utilizing low-grade iron ore resources. The pre-concentration magnetic separator can also be used for treating barren rocks with the mixing rate exceeding the standard in the process of mining the magnetic iron ores, so that the recovery utilization rate of iron ore resources is improved, the ore mining cost is reduced, and the economic benefit of mines is improved. The magnet has important functions and significance for reducing cost, improving efficiency and improving benefits of mine enterprises.
Claims (10)
1. A dry crawler-type magnetic separator for pre-separating coarse grains is characterized by comprising a magnetic type crawler device and an ore separation hopper, wherein a magnetic system is embedded in a crawler; the magnetic attraction type crawler device is divided into at least three sections along the transmission direction, wherein the first section along the transmission direction is arranged along the horizontal direction, the subsequent sections are lifted upwards along the transmission direction, and each section forms different angles with the horizontal direction and the angles are sequentially increased in an increasing mode so as to change the magnetic force component force in the vertical direction; the number of the ore separating funnels is reduced by one from the number of the subsections, the ore separating funnels are arranged from the second subsection, and one ore separating funnel is arranged below each subsection to receive materials falling from the subsections.
2. The dry crawler-type magnetic separator for pre-separating coarse particles according to claim 1, further comprising a feeding and conveying belt for conveying the materials to be separated, wherein the conveying direction of the feeding and conveying belt is the same as that of the magnetic crawler-type device, and the end position of the feeding and conveying belt along the conveying direction is located below the first section of the magnetic crawler-type device; and an ore separation hopper is also arranged below the end position of the feeding conveying belt.
3. The coarse grain preselection dry track type magnetic separator according to any one of claims 1 or 2, wherein the magnetic attraction type track device comprises an embedded magnetic system track, a transmission roller, a direction-changing roller and a first direction-changing pressure wheel set; the embedded magnetic system type crawler belt is wound between a transmission roller and a bend roller to form a conveying crawler belt with two sides running in a circulating mode, the transmission roller is driven by a motor to rotate along the axis of the transmission roller and drives the bend roller to rotate through the embedded magnetic system type crawler belt, the transmission roller and the bend roller are arranged in the horizontal direction in a high-low mode, the first bend pressing wheel set comprises bend pressing wheels, the number of the bend pressing wheels is one less than that of the magnetic type crawler belt device in a segmentation mode, the first bend pressing wheel set is arranged on the back face of the surface, used for adsorbing and transmitting materials to be sorted, of the embedded magnetic system type crawler belt, the height of each bend pressing wheel in the horizontal direction is different, and the embedded magnetic system type crawler belt is enabled to form segments with different angles on one side for transmitting the materials to be sorted.
4. The coarse grain preselection dry-type track-type magnetic separator of claim 3, further comprising a second direction-changing pressure wheel set, wherein the second direction-changing pressure wheel set is arranged on the surface of the other side of the embedded magnetic system type track opposite to the side where the materials to be separated are conveyed, and the height of each direction-changing pressure wheel is different in the horizontal direction and corresponds to the position of each direction-changing pressure wheel of the first direction-changing pressure wheel set, so that two sides of the embedded magnetic system type track form mutually parallel segments.
5. The dry track type magnetic separator for pre-concentration of coarse particles according to any one of claims 1 or 2, wherein a baffle plate is arranged between each ore separating funnel, the baffle plate extends upwards to the boundary of each segment of the magnetic attraction type track device, and a gap for allowing the materials adsorbed on the magnetic attraction type track device to pass through is reserved between the baffle plate and the magnetic attraction type track device.
6. The dry track type magnetic separator for pre-selection of coarse grains according to claim 5, wherein the magnetic crawler is provided with a head sweeper at the end along the conveying direction, and a baffle plate extending upwards to the end of the magnetic crawler along the conveying direction is provided at the end of the corresponding last ore separating funnel, the head sweeper is a scraper blade closely attached to the magnetic crawler to scrape the material adsorbed on the magnetic crawler without dropping off into the ore separating funnel.
7. A dry crawler-type magnetic separation method for preselecting coarse grains is characterized in that a magnetic adsorption crawler device with a magnetic adsorption function is adopted, the magnetic adsorption crawler device is divided into at least three sections along a transmission direction, wherein the first section along the transmission direction is arranged along the horizontal direction, the subsequent sections are lifted upwards along the transmission direction, and each section forms different angles with the horizontal direction and the angles are sequentially increased; meanwhile, from the second subsection, an ore separation funnel is respectively arranged under each subsection so as to realize the separation of the mixed materials with different magnetism.
8. The method for performing dry crawler-type magnetic separation on coarse grains according to claim 7, further comprising the steps of arranging a feeding and conveying belt for conveying the materials to be separated, wherein the conveying direction of the feeding and conveying belt is the same as that of the magnetic crawler-type device, and the tail end position of the feeding and conveying belt in the conveying direction is positioned below the first section of the magnetic crawler-type device; an ore separation hopper is arranged below the end position of the feeding conveying belt.
9. The dry crawler-type magnetic separation method for preselecting coarse grains according to claim 7, characterized in that the method further comprises the step of adjusting the segmentation angle according to the grain size of the material, wherein when the material is large grains with the size of 3-12 mm, the angle between each segmentation is gradually increased to 5-10 degrees, and when the material is small grains with the size of 0.15-3 mm, the angle between each segmentation is gradually increased to 10-20 degrees.
10. The dry track-type magnetic separation method for preselecting coarse particles according to claim 7, further comprising the step of adjusting the magnetic field intensity applied to the material according to the particle size of the material, wherein the magnetic field intensity is adjusted to 300-600 mT when the material is large particles of 3-12 mm, and 150-300 mT when the material is small particles of 0.15-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577631.5A CN111905924A (en) | 2020-06-23 | 2020-06-23 | Dry-type crawler-type magnetic separator for coarse grain preselection and magnetic separation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577631.5A CN111905924A (en) | 2020-06-23 | 2020-06-23 | Dry-type crawler-type magnetic separator for coarse grain preselection and magnetic separation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111905924A true CN111905924A (en) | 2020-11-10 |
Family
ID=73227146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010577631.5A Pending CN111905924A (en) | 2020-06-23 | 2020-06-23 | Dry-type crawler-type magnetic separator for coarse grain preselection and magnetic separation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111905924A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH338330A (en) * | 1954-10-07 | 1959-05-15 | Elmeg | Magnetic particle clutch |
| CN2265859Y (en) * | 1996-02-01 | 1997-10-29 | 朱占英 | Hoisting classifed magnetic separator |
| CN2331434Y (en) * | 1998-08-29 | 1999-08-04 | 孙建喜 | Magnetic separator |
| CN102580847A (en) * | 2012-02-24 | 2012-07-18 | 成都利君实业股份有限公司 | Dry-type magnetic separator |
| CN202539063U (en) * | 2012-04-01 | 2012-11-21 | 徐州大禹重科矿山设备有限公司 | Heavy multi-step banana screening equipment |
| CN203091083U (en) * | 2013-02-26 | 2013-07-31 | 成都利君实业股份有限公司 | Dry magnetic separator |
| CN103658023A (en) * | 2013-12-26 | 2014-03-26 | 奥瑞（天津）工业技术有限公司 | Novel single-layer banana sieve |
| CN203565193U (en) * | 2013-11-14 | 2014-04-30 | 迟秀斌 | Multifunctional sandstone mining device |
| CN104399582A (en) * | 2014-11-05 | 2015-03-11 | 攀钢集团矿业有限公司 | Belt magnetic separation equipment and ore dressing system |
| CN105536984A (en) * | 2016-01-26 | 2016-05-04 | 辽宁科技大学 | Magnetic separation method with both preselection tailing throwing and thick-fine separation and three-product magnetic separator |
| CN206567087U (en) * | 2016-12-28 | 2017-10-20 | 北矿机电科技有限责任公司 | A kind of updraft type combines dry-dressing machine |
| CN107913797A (en) * | 2017-11-28 | 2018-04-17 | 北矿机电科技有限责任公司 | It is a kind of to be used for ore-dressing plant and beneficiation method containing strong and weak magnetic mixed mineral |
| CN108745636A (en) * | 2018-05-16 | 2018-11-06 | 辽宁科技大学 | Vertical band magnetic separator |
| CN208449916U (en) * | 2018-05-03 | 2019-02-01 | 中国农业大学 | A kind of oil-tea camellia husks seed sorting unit |
| CN110026292A (en) * | 2019-04-04 | 2019-07-19 | 包钢集团矿山研究院（有限责任公司） | A kind of beneficiation method for the useful rock dry separation recycling of iron content |
| CN210150119U (en) * | 2019-07-03 | 2020-03-17 | 那铭 | Inclination angle adjusting assembly of mining belt conveyor |
| CN210632277U (en) * | 2019-09-20 | 2020-05-29 | 南京贝斯特金属材料有限公司 | Permanent-magnet iron remover for producing iron powder |
-
2020
- 2020-06-23 CN CN202010577631.5A patent/CN111905924A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH338330A (en) * | 1954-10-07 | 1959-05-15 | Elmeg | Magnetic particle clutch |
| CN2265859Y (en) * | 1996-02-01 | 1997-10-29 | 朱占英 | Hoisting classifed magnetic separator |
| CN2331434Y (en) * | 1998-08-29 | 1999-08-04 | 孙建喜 | Magnetic separator |
| CN102580847A (en) * | 2012-02-24 | 2012-07-18 | 成都利君实业股份有限公司 | Dry-type magnetic separator |
| CN202539063U (en) * | 2012-04-01 | 2012-11-21 | 徐州大禹重科矿山设备有限公司 | Heavy multi-step banana screening equipment |
| CN203091083U (en) * | 2013-02-26 | 2013-07-31 | 成都利君实业股份有限公司 | Dry magnetic separator |
| CN203565193U (en) * | 2013-11-14 | 2014-04-30 | 迟秀斌 | Multifunctional sandstone mining device |
| CN103658023A (en) * | 2013-12-26 | 2014-03-26 | 奥瑞（天津）工业技术有限公司 | Novel single-layer banana sieve |
| CN104399582A (en) * | 2014-11-05 | 2015-03-11 | 攀钢集团矿业有限公司 | Belt magnetic separation equipment and ore dressing system |
| CN105536984A (en) * | 2016-01-26 | 2016-05-04 | 辽宁科技大学 | Magnetic separation method with both preselection tailing throwing and thick-fine separation and three-product magnetic separator |
| CN206567087U (en) * | 2016-12-28 | 2017-10-20 | 北矿机电科技有限责任公司 | A kind of updraft type combines dry-dressing machine |
| CN107913797A (en) * | 2017-11-28 | 2018-04-17 | 北矿机电科技有限责任公司 | It is a kind of to be used for ore-dressing plant and beneficiation method containing strong and weak magnetic mixed mineral |
| CN208449916U (en) * | 2018-05-03 | 2019-02-01 | 中国农业大学 | A kind of oil-tea camellia husks seed sorting unit |
| CN108745636A (en) * | 2018-05-16 | 2018-11-06 | 辽宁科技大学 | Vertical band magnetic separator |
| CN110026292A (en) * | 2019-04-04 | 2019-07-19 | 包钢集团矿山研究院（有限责任公司） | A kind of beneficiation method for the useful rock dry separation recycling of iron content |
| CN210150119U (en) * | 2019-07-03 | 2020-03-17 | 那铭 | Inclination angle adjusting assembly of mining belt conveyor |
| CN210632277U (en) * | 2019-09-20 | 2020-05-29 | 南京贝斯特金属材料有限公司 | Permanent-magnet iron remover for producing iron powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103331208B (en) | The method of heavy magnetic compound dry separator and the ore dressing of utilization heavy magnetic compound dry separator | |
| CN110586315B (en) | Full-dry type iron ore sorting method | |
| CN101352697B (en) | Novel ore dressing technique of weak magnetic iron ore and novel special strong magnetic dry separator thereof | |
| CN106000636A (en) | Belt-type dry magnetic separator | |
| CN102230070B (en) | Novel three-stage pre-dressing and crushing process for low-grade magnetite | |
| CN107661814B (en) | Screening-magnetic separation-ore grinding-magnetic separation flow equipment arrangement system | |
| CN202290297U (en) | Belt type weak magnetic separator | |
| CN204892121U (en) | Vibrating magnetic field screening machine | |
| CN114471899A (en) | Energy-saving and water-saving closed circuit ore grinding process | |
| CN102728461B (en) | Micro powder fine powder dry-type magnet separator | |
| CN219187219U (en) | Separation of stubborn stones and steel ball of semi-autogenous mill and stubborn stone crushing system | |
| CN202238241U (en) | Dry magnetic pre-separating device for fine broken ores | |
| CN212596372U (en) | Dry-type crawler-type magnetic separator for coarse grain preselection | |
| CN103691539B (en) | Intelligent double-stage crushing station | |
| CN111905924A (en) | Dry-type crawler-type magnetic separator for coarse grain preselection and magnetic separation method | |
| CN206716201U (en) | A kind of mining material separated dry type magnetic separator | |
| CN205570542U (en) | Hierarchical magnet separator of series connection | |
| CN205084860U (en) | Multistage magnetic separation device | |
| CN205570541U (en) | Magnetic force series connection sorter | |
| CN203803604U (en) | Intelligent two-stage crushing station | |
| CN203862383U (en) | Dry-type magnetic agglomeration separator | |
| CN201644215U (en) | Magnetic extractor special for scrap steel | |
| CN104874470B (en) | A kind of beneficiation method | |
| CN111940125B (en) | Method and system for recovering precious metals in low-grade gold tailings | |
| CN203778178U (en) | Slag-copper separation equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201110 |