CN110523626B

CN110523626B - Magnetite pretreatment equipment

Info

Publication number: CN110523626B
Application number: CN201910804220.2A
Authority: CN
Inventors: 王宗宝
Original assignee: Xiao Chunhuai
Current assignee: Jianping County Zhengtong Mining Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-10-30
Anticipated expiration: 2039-08-28
Also published as: CN110523626A

Abstract

The invention relates to magnetite pretreatment equipment, which comprises a cutting system, a screening system, a washing system, a magnetic separation system and a flotation system which are sequentially arranged from top to bottom; the cutting system provided by the invention sequentially performs three cutting operations on the ore raw material, has good cutting effect and high efficiency, and can effectively prevent the situations of machine shell jamming and the like caused by overlarge ore size in the subsequent processing process. Meanwhile, the cutting system can adjust the number of the parts of the rotary cutter extending into the corresponding working grooves according to the size of the ore raw material and the cutting requirement, so that the cutting efficiency is changed, and the work scheduling is flexible. The screening system effectively improves the screening efficiency by adopting vibration and wind power to screen the mineral aggregate. The magnetic separation system adopts the design of two layers of conveying tracks and the shifting plate, so that more magnetic separation heads can be used for carrying out magnetic separation simultaneously, the magnetic separation efficiency is improved, and the effective magnetic separation of the metallic magnetite can be realized quickly.

Description

Magnetite pretreatment equipment

Technical Field

The invention belongs to the technical field of mineral processing equipment, and particularly relates to magnetite pretreatment equipment.

Background

The mining and deep processing of ores, particularly metal ores, and the like belong to the basic source of heavy industry. And a magnetite pretreatment link exists in the process of mining and utilization. When the link is operated properly, the beneficiation efficiency can be greatly improved, the loss is reduced, and the emission pollution can be reduced. Magnetite is an ore of magnetite which is an oxide mineral, and most of magnetite is a particle-block aggregate, has uneven fracture, hardness of 5.5-6.5, density of 5.16-5.18 g/cm3, and has ferromagnetism.

The prior magnetite pretreatment equipment has the following problems: the existing mineral separation equipment has the potential safety hazards that the crushing effect is poor, and the subsequent processing machine is easy to clamp a shell and even damage due to overlarge ore particles in the subsequent mineral separation process. Most of the existing devices use a magnetic separation mode to roughly screen minerals, the magnetic separation effect is poor, the magnetic separation efficiency is extremely low, subsequent impurity removal processing engineering is not matched, and the obtained ore phase and plasmid are poor.

In response to the above drawbacks, a great deal of intensive research has been carried out and results have been obtained, such as:

CN201910296187.7 discloses a magnet ore deep-processing apparatus, processingequipment for the integration ore, it is the ore raw materials that the high rigidity is low that its main processing was handled, the device passes through the screening system and selects the ore that the size is more or less, later rethread deflection crushing system, the vibration mill system, the fine grinding system carries out direct pressure type breakage and contact grinding to the ore, but the low integration ore of hardness splits into the small-size ore of deep-processing operation, the rethread solid-phase magnetic separation system draws out large granule metal ore, utilize the liquid phase magnetic separation system to draw out the tiny particle metal ore, the ore raw materials taste that obtains is splendid.

CN201910296186.2 discloses a magnetite preprocessing device, the ore raw materials that the main processing is the high rigidity is low, it is categorised according to size through the screening system with the ore raw materials, the ore of small-size directly carries out the magnetic separation through magnetic separation system one, main concentrated processing jumbo size ore raw materials, jumbo size ore raw materials loops through crushing system, cut up the system, the grinding system carries out direct pressure type breakage and contact grinding and obtains the small particle size ore raw materials, later the magnetic separation is carried out through magnetic separation system two, magnetic separation efficiency is high, can obtain the magnet ore raw materials of high-purity grade by the mode of utmost low loss.

As described above, the prior art discloses various magnetite treatment apparatuses, but these types of treatment apparatuses still have some problems in practical use. Because many magnetite particles are aggregated into particle blocks; the hardness is 5.5-6.5; if the processing methods such as pressure type crushing and contact type grinding in the prior art are directly adopted, the ores are difficult to be completely split into small enough sizes, the processing surfaces are quite uneven, and excessive product sizes and quality are easily caused to be uneven; secondly, because of the strong magnetic physical property of magnetite, the larger the size of magnetite is, the stronger the polymerization magnetism is, if a conventional contact type crushing scheme is directly adopted, the magnetite is easy to adsorb and even adhere to machine equipment and a cutter head, so that the magnetite is not only not beneficial to processing, but also easy to cause the machine to be blocked; third, because of the high hardness of magnetite, if the conventional contact crushing scheme is directly adopted for violent fragmentation, high frequency and a large amount of high kinetic energy can be caused in the process of processing and the high frequency and high kinetic energy can be caused to collapse the stone and eject, which is a great potential safety hazard for both machines and workers, and the service life of the machine can be greatly reduced. The device disclosed by the prior art also has the defects of complex structure, various systems, large volume, large occupied area, higher cost and the like.

In addition, other current devices sieve the ore according to particle size comparatively simply, all sieve with the screen cloth is simple, perhaps carry out the magnetic separation after the direct cutting and can not sieve according to the ore size granule, and the screening classification precision is poor extremely low for the ore of different particle sizes is sieved out by the magnetic separation more difficult in follow-up magnetic separation process, influences the ore dressing effect. Most of pretreatment equipment simply uses clear water to clean ore raw materials or carries out magnetic separation or flotation without cleaning, and the obtained ore has high impurity content and poor quality.

Therefore, based on the above-mentioned drawbacks, in the field of mineral processing equipment, there is still a need for research and improvement on new magnetite pretreatment equipment, which is also a research focus and focus in this field at present, and more a starting point and a driving force for the completion of the present invention.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide magnetite pretreatment equipment which can carry out three-pass cutting on an ore raw material, has high cutting efficiency, flexible work scheduling, higher screening and magnetic separation efficiency and good washing and flotation effects.

In order to achieve the purpose, the invention adopts the following technical scheme:

magnetite pretreatment equipment comprises a cutting system, a screening system, a washing system, a magnetic separation system and a flotation system which are sequentially arranged from top to bottom;

the cutting system comprises a feeding hopper, a first working groove, a second working groove and a bent pipe; the feeding hopper is sequentially communicated with a first working groove and a second working groove, openings I are formed in two side walls of the first working groove, a first rotary cutter is mounted on the openings I through a telescopic arm, a plurality of openings II are formed in the side walls of the second working groove, a second rotary cutter is mounted on the openings II through a sliding rail I, and the second working groove is communicated with a bent pipe through an opening III formed in the bottom of the second working groove; one part of the rotary cutter extends into the working groove I, and the amount of the part of the rotary cutter extending into the working groove I can be changed through the telescopic arm, so that the cutting efficiency is changed. The two parts of the rotary cutter extend into the two inner parts of the working groove, and the sliding position of the top end of the rotary cutter at the first sliding rail can be changed to change the amount of the two parts of the rotary cutter extending into the two inner parts of the working groove, so that the cutting efficiency is changed. And mineral aggregate is cut in the first working groove and the second working groove respectively.

The screening system comprises a motor, a vibration arm, a first telescopic rod, a first rotary joint, a screening groove, a fan and a screen bar; the top of one end of the screening groove is provided with a plurality of fans, the bottom of the screening groove is formed by a plurality of screen bars in a staggered mode, two sides of the screening groove are respectively connected with a first rotating joint, one end of the first rotating joint is connected with a first telescopic rod, the upper end of the first telescopic rod is connected with an oscillating arm, and the oscillating arm is connected with a motor; the screening system is vibrated through the vibrating arm and is combined with wind power generated by the fan to screen mineral aggregates efficiently.

The washing system comprises a sliding rail II, a telescopic rod II, a rotary joint II, a basket, a washing tank, a sound wave generator and a valve I; the two sliding rails II are arranged, two sides of the basket are connected with the two rotating joints II, the two rotating joints II are connected with the upper ends of the two telescopic rods, the lower ends of the two telescopic rods are arranged on the two sliding rails II in a sliding mode, the cleaning tank is located on a working table surface between the two sliding rails II, a plurality of sound wave generators are arranged in the cleaning tank, and one side of the cleaning tank is provided with a first valve; the washing system ultrasonically cleans the mineral aggregate by immersing the basket in a cleaning tank. The basket can freely move into the cleaning groove and above the sliding groove through the matching action of the sliding rail II, the telescopic rod II and the rotating joint II.

The magnetic separation system comprises a sliding chute, a conveying crawler belt, a magnetic suction head, a sliding door III, a support, a shifting plate I and a shifting plate II; the upper portion of the sliding groove is located on one side of the cleaning groove, a plurality of conveying tracks are arranged on the middle lower portion of the sliding groove, a plurality of magnetic suction heads are uniformly arranged on the conveying tracks, a sliding door III is arranged at the bottom of the lower end of the sliding groove, a support is arranged on one side, away from the sliding groove, of the conveying tracks, and a first shifting plate and a second shifting plate are arranged on the support respectively. The magnetic separation system performs magnetic separation on the metallic magnetite through the magnetic suction head.

Preferably, a rotating column is arranged at the center inside the second working groove, and a plurality of impact rollers are mounted on the rotating column. The column spinner is built-in to have each striking roller that the motor can drive it to rotate, and pivoted striking roller not only can play the effect of striking stirring dispersion mineral aggregate, can also play and change its effect of placing the attitude with the mineral aggregate upset, can make two follow different angles of each rotary cutter cut the ore, cuts thoroughly, and efficiency is higher.

Preferably, one end of the bent pipe is connected with the fixed groove, the working groove III is connected with the fixed groove in a nested mode through the rotating shaft I, a groove is formed in the bottom of the working groove III, a rotary cutter III is arranged above the groove, the upper end of the rotary cutter III is connected with the lifting column, the lifting column is supported and fixed through a connecting frame, and the screening groove is located on one side of the working groove III. And finishing the third cutting of the mineral aggregate in the third working groove. The third rotary cutter corresponds to the groove position, so that enough space can be ensured in the cutting process to prevent the machine from being blocked.

Preferably, a first sliding door is arranged on one side of the working groove III. The first sliding door is closed in the third cutting working process of the rotary cutter, and the material pouring after cutting is opened, so that the material is prevented from splashing everywhere in the cutting process.

Preferably, one end of the screening groove is also provided with a first flip cover door. The mineral material of larger size left on the screen is removed by opening the flap door.

Preferably, a plurality of strip holes are formed in the side wall of the basket, a plurality of round holes are uniformly formed in the bottom of the basket, and a sliding door II is arranged on one side of the basket. The washing water can enter the basket and flow out of the round holes through the bar holes and the round holes. The cleaned mineral aggregate can be obliquely poured out of the basket through the sliding door II.

Preferably, the sliding groove is obliquely arranged, so that mineral aggregate can flow from top to bottom conveniently.

Preferably, the conveying crawler is provided with two layers, and the positions of the first shifting plate and the second shifting plate are respectively flush with the two layers of conveying crawler. The two-layer design can improve the efficiency of magnetic separation and quickly and effectively magnetically separate metallic magnetite.

Preferably, the flotation system comprises a tank, a feeder, a bottom pipe network, a side pipe network, a second valve, a water machine, a second rotating shaft, a base, a second flip door, a suction head, a first telescopic pipe, a second telescopic pipe and a pump machine; the water dispenser is characterized in that a feeder and a water machine are arranged on one side of the groove, a bottom pipe network and a side pipe network are arranged in the groove and connected with the feeder through pipelines, the water machine is communicated with the groove through a second valve, a second rotating shaft is arranged at the bottom of the groove and arranged on the base, a second flip door is arranged on one side of the groove, the suction head is arranged above the groove, the upper end of the suction head is sequentially connected with a first telescopic pipe and a second telescopic pipe, the second telescopic pipe is connected with the upper end of a pump, and the pump is arranged outside the groove. And the flotation system finishes flotation of the magnetite to remove impurities, so that the magnetite with high quality is obtained.

The invention has the beneficial effects that:

(1) according to the invention, the ore raw material is sequentially subjected to three-pass cutting by adopting the cutting system, the ore is cut on a plurality of position surfaces so as to form multi-directional uniform fractures, the processing surfaces are uniform, the cutting process is thorough, the cutting efficiency is high, the size and the quality of the transition product are uniform, and the situations of machine shell clamping and other potential safety hazards can be effectively prevented. Meanwhile, the cutting system can adjust the number of the parts of the rotary cutter I and the rotary cutter II extending into the corresponding working grooves according to the size of the ore raw material and the cutting requirement, so that the cutting efficiency is changed, and the working scheduling is flexible.

(2) Because the setting of column spinner and striking roller, pivoted striking roller not only can play the effect of striking stirring dispersion mineral aggregate, can also play the effect that changes its place attitude with the mineral aggregate upset, can make each rotary cutter two cut the ore from different angles, cuts thoroughly, has improved cutting efficiency greatly.

(3) The screening system carries out the screening of mineral aggregate through adopting to vibrate with wind-force, vibrates the in-process at the screening groove and makes the standard size mineral aggregate that is less than the screen cloth particle diameter fall from the screen cloth, adds the effect of wind-force simultaneously and makes the mineral aggregate that vibrates on the in-process screen cloth blown the dispersion and more be favorable to standard size mineral aggregate to be screened out, has effectively improved screening efficiency.

(4) The washing system cleans the mineral aggregate through ultrasonic waves, can effectively remove impurities such as silt carried in the mineral aggregate, and has better cleaning effect. The magnetic separation system adopts the design of two layers of conveying tracks and the shifting plate, so that more magnetic separation heads can be used for carrying out magnetic separation simultaneously, the magnetic separation efficiency is improved, and the effective magnetic separation of the metallic magnetite can be realized quickly. The flotation system can effectively remove impurities in the magnetite to obtain the magnetite with high quality and high grade phase.

(5) According to the device, the high-hardness ore is pretreated through the arrangement of the cutting system, the screening system, the washing system, the magnetic separation system and the flotation system, and the magnetite with high quality and high grade phase is screened out. Because the system needs few links, the whole equipment has small occupied area, high space utilization rate, low migration difficulty, low composition cost and easy popularization and use.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a first schematic view of the cutting system of the present invention;

FIG. 3 is a second schematic view of the cutting system of the present invention;

FIG. 4 is a schematic illustration of the first screening system of the present invention;

FIG. 5 is a schematic illustration of the configuration of the screening system of the present invention II;

FIG. 6 is a first schematic diagram of the washing system of the present invention;

FIG. 7 is a second schematic structural view of the washing system of the present invention;

FIG. 8 is a first schematic structural view of the magnetic separation system of the present invention;

FIG. 9 is a schematic view of the magnetic separation system of the present invention;

FIG. 10 is a schematic view of the magnetic separation system of the present invention having a third configuration;

FIG. 11 is a first schematic view of the flotation system of the present invention;

FIG. 12 is a second schematic structural view of the flotation system of the present invention;

wherein, the feeding funnel 1, the first working tank 101, the first opening 102, the telescopic arm 103, the first rotary cutter 104, the second working tank 105, the rotary column 106, the impact roller 107, the second opening 108, the first slide rail 109, the second rotary cutter 1010, the third opening 1011, the elbow 2, the fixed groove 201, the first rotary shaft 202, the third working tank 203, the groove 204, the first sliding door 205, the third rotary cutter 206, the lifting column 207, the connecting frame 208, the motor 3, the oscillating arm 301, the first telescopic rod 302, the first rotary joint 303, the sieving groove 304, the fan 305, the first flip door 306, the sieve bar 307, the second slide rail 4, the second telescopic rod 401, the second rotary joint 402, the basket 403, the bar hole 404, the round hole 405, the second sliding door 406, the cleaning groove 5, the sound wave generator 501, the first valve 502, the chute 6, the conveying crawler belt 601, the magnetic suction head 602, the third sliding door 603, the bracket 7, the first shifting plate 701, the second shifting plate 702, the groove 8, the feeder 801, the bottom pipe net 803, a second valve 804, a water machine 805, a second rotating shaft 806, a base 807, a second flip door 808, a suction head 9, a first extension pipe 901, a second extension pipe 902 and a pump 903.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 12, a magnetite pretreatment apparatus includes a cutting system, a screening system, a washing system, a magnetic separation system, and a flotation system, which are sequentially arranged from top to bottom;

the cutting system comprises a feeding hopper 1, a first working groove 101, a second working groove 105 and a bent pipe 2; the feeding hopper 1 is sequentially communicated with a first working groove 101 and a second working groove 105, two side walls of the first working groove 101 are provided with a first opening 102, a first rotary cutter 104 is mounted on the first opening 102 through a telescopic arm 103, part of the first rotary cutter 104 extends into the first working groove 101, and the number of the parts of the first rotary cutter 104 extending into the first working groove 101 can be changed through the telescopic arm 103, so that the cutting efficiency is changed. The side wall of the second working groove 105 is provided with a plurality of second openings 108, the second rotary cutter 1010 is mounted on the second openings 108 through a first sliding rail 109, the second rotary cutter 1010 partially extends into the second working groove 105, and the amount of the second rotary cutter 1010 partially extending into the second working groove 105 can be changed by changing the sliding position of the top end of the second rotary cutter 1010 on the first sliding rail 109, so that the cutting efficiency is changed. The second working groove 105 is communicated with the elbow pipe 2 through a third opening 1011 formed in the bottom;

the second working groove 105 is of a cylindrical structure, a rotating column 106 is arranged in the center of the inside of the second working groove 105, and a plurality of impact rollers 107 are mounted on the rotating column 106. The built-in each striking roller 107 that has the motor to drive it of column spinner 106 rotates, and pivoted striking roller 107 not only can play the effect of striking stirring dispersion mineral aggregate, can also play the effect that changes its placing the attitude with the mineral aggregate upset, can make two 1010 of each rotary cutter cut the ore from different angles, and the cutting is thorough, and efficiency is higher.

One end of the elbow pipe 2 is connected with the fixing groove 201, the working groove III 203 is connected with the fixing groove 201 in a nested mode through the rotating shaft I202, a groove 204 is formed in the bottom of the working groove III 203, a rotary cutter III 206 is arranged above the groove 204, the upper end of the rotary cutter III 206 is connected with the lifting column 207, the lifting column 207 is supported and fixed through a connecting frame 208, and the screening groove 304 is located on one side of the working groove III 203. The corresponding position of the third rotary cutter 206 and the groove 204 can ensure that the cutting process has enough space to prevent the machine from jamming.

And one side of the working groove III 203 is provided with a sliding door I205. The first sliding door 205 is closed in the cutting process of the third rotary cutter 206, and the material pouring after the cutting is completed is opened, so that the material is prevented from splashing everywhere in the cutting process.

The screening system comprises a motor 3, a shaker arm 301, a telescopic rod I302, a rotating joint I303, a screening groove 304, a fan 305 and screen bars 307; the top of one end of the screening groove 304 is provided with a plurality of fans 305, and the fans 305 are internally provided with motors. The bottom of the screening groove 304 is formed by a plurality of screen bars 307 in a staggered mode, namely the bottom of the screening groove 304 is a screen formed by the screen bars 307, two sides of the screening groove 304 are respectively connected with a first rotating joint 303, one end of the first rotating joint 303 is connected with a first telescopic rod 302, the upper end of the first telescopic rod 302 is connected with the oscillator arm 301, and the oscillator arm 301 is connected with the motor 3; and a first flip door 306 is also arranged at one end of the screening groove 304. The motor 3 drives the oscillating arm 301, the first telescopic rod 302 and the first rotary joint 303 to work.

The washing system comprises a sliding rail II 4, a telescopic rod II 401, a rotary joint II 402, a basket 403, a washing tank 5, a sound wave generator 501 and a valve I502; the two sliding rails two 4 are provided, two sides of the basket 403 are connected with the two rotating joints 402, the two rotating joints 402 are connected with the upper ends of the two telescopic rods 401, the lower ends of the two telescopic rods 401 are arranged on the two sliding rails two 4 in a sliding mode, and the cleaning tank 5 is located on a working table surface between the two sliding rails two 4. A plurality of sound wave generators 501 are arranged in the cleaning tank 5, a first valve 502 is arranged on one side of the cleaning tank 5 and used for being externally connected with a water source, and the sound wave generators 501 generate ultrasonic waves to enable the cleaning tank 5 to be cleaned by the ultrasonic waves; the side wall of the basket 403 is provided with a plurality of bar holes 404, the bottom of the basket 403 is uniformly provided with a plurality of round holes 405, and one side of the basket 403 is provided with a second sliding door 406.

The magnetic separation system comprises a chute 6, a conveying crawler 601, a magnetic suction head 602, a third sliding door 603, a support 7, a first shifting plate 701 and a second shifting plate 702; the upper portion of the sliding groove 6 is located on one side of the cleaning groove 5, a plurality of conveying tracks 601 are arranged on the middle lower portion of the sliding groove 6, a plurality of magnetic suction heads 602 are uniformly arranged on the conveying tracks 601, a third sliding door 603 is arranged at the bottom of the lower end of the sliding groove 6, a support 7 is arranged on one side, far away from the sliding groove 6, of the conveying tracks 601, and a first shifting plate 701 and a second shifting plate 702 are respectively arranged on the support 7. The chute 6 is obliquely arranged, so that mineral aggregates can flow from top to bottom conveniently. The conveying crawler 601 is provided with two layers, and the positions of the first shifting plate 701 and the second shifting plate 702 are respectively flush with the two layers of conveying crawler 601. The two-layer design can improve the efficiency of magnetic separation and quickly and effectively magnetically separate metallic magnetite.

The flotation system comprises a tank 8, a feeder 801, a bottom pipe network 802, a side pipe network 803, a second valve 804, a water machine 805, a second rotating shaft 806, a base 807, a second flip door 808, a suction head 9, a first extension pipe 901, a second extension pipe 902 and a pump 903; the water dispenser comprises a trough 8, a feeder 801 and a water machine 805 are arranged on one side of the trough 8, a bottom pipe network 802 and a side pipe network 803 are arranged in the trough 8, the bottom pipe network 802 and the side pipe network 803 are connected with the feeder 801 through pipelines, the water machine 805 is communicated with the trough 8 through a second valve 804, a second rotating shaft 806 is arranged at the bottom of the trough 8, the second rotating shaft 806 is arranged on a base 807, a second flip door 808 is arranged on one side of the trough 8, a suction head 9 is arranged above the trough 8, the upper end of the suction head 9 is sequentially connected with a first telescopic pipe 901 and a second telescopic pipe 902, the second telescopic pipe 902 is connected with the upper end of a. The suction head 9 can be controlled to move up and down and left and right through the first telescopic pipe 901 and the second telescopic pipe 902, and the suction head 9 can be driven to work through the pump 903 to absorb foam. A plurality of holes are uniformly arranged on the bottom pipe network 802 and the side pipe network 803 so as to facilitate the outflow of foam. The feeder 801 is filled with foam raw materials, the foam can be conveyed into the tank 8 through the bottom pipe network 802 and the side pipe network 803, and the tank 8 can be controlled to turn and incline through the second rotating shaft 806.

When the invention works: ore raw materials firstly flow into a first working groove 101 from a feeding funnel 1, a first cutting is carried out in the first working groove 101 by a first rotary cutter 104 on two sides, then flows into the second working groove 105, is impacted, overturned and dispersed in each area in the second working groove 105 by each rotating impact roller 107 in the second working groove, and is cut for the second time by the second rotary cutter 1010, then mineral aggregate falls into the elbow pipe 2 through the third opening 1011 and flows into the third working groove 203, the third rotary cutter 206 is controlled by the lifting column 207 to lift, the motor arranged in the connecting frame 208 can drive the third rotary cutter 206 and the lifting column 207 to work, the third rotary cutter 206 is lowered to a proper position to cut the mineral aggregate in the inner groove 204 of the third working groove 203 for the third time, the first sliding door 205 is opened after the cutting is finished, the working channel three 203 can be tilted in one end of the fixed channel 201 by the first rotating shaft 202 to tilt and dump the mineral material into the screen composed of the screen bars 307 of the screening channel 304.

The vibrating arm 301 can enable the screening groove 304 to vibrate to screen the cut mineral aggregates in vibration, and the telescopic rod I302 and the rotary rod I303 can respectively adjust the height and the angle of the screening groove 304, so that the screened mineral aggregates with standard sizes can fall into the basket 403. The fan 305 at the top of the screening trough 304 operates to blow air during the vibratory screening process, and screening can be performed more efficiently under the action of wind power, so that standard-size mineral aggregates can be screened out of the screen quickly, and mineral aggregates with larger sizes can be left on the screen and taken out by opening the first flip door 306. The sieved mineral aggregate with standard size is lifted in the basket 403 by controlling the second telescopic rod 401 and the second telescopic rod 401 slides on the second sliding rail 4, so that the basket 403 is soaked in the cleaning tank 5 to perform ultrasonic cleaning on the mineral aggregate, cleaning water can enter the basket 403 through the strip holes 404 and the round holes 405, and impurities and sewage can also flow out through the strip holes 404 and the round holes 405 after the cleaning is completed. After the cleaning is finished, the basket 403 is lifted and moved to the upper part of the chute 6 through the second sliding rail 4 and the second telescopic rod 401, and the basket 403 is controlled to rotate, tilt and dump the cleaned mineral aggregate through the second rotary joint 402. The mineral aggregate flows from the upper part to the middle lower part of the chute 6, wherein the metallic magnetite is adsorbed by the magnetic attraction heads 602 on the conveying track 601, moves to the other end along with the conveying track 601, is scraped by the first stirring plate 701 or the second stirring plate 702 and falls into the chute 8, and the mineral aggregate without metallic magnetite falls into the lower end of the chute 6 and is collected by a container by opening the third sliding door 603. The metallic magnetite is immersed in the water and foam mixture in the tank 8, wherein impurities contained in the metallic magnetite can float up along with the foam and be sucked away through the suction head 9, and finally the remaining high-quality and high-grade magnetite is poured out and collected through the flip door II 808.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Magnetite pretreatment equipment is characterized by comprising a cutting system, a screening system, a washing system, a magnetic separation system and a flotation system which are sequentially arranged from top to bottom;

the cutting system comprises a feeding hopper (1), a first working groove (101), a second working groove (105) and a bent pipe (2); the feeding hopper (1) is sequentially communicated with a first working groove (101) and a second working groove (105), two side walls of the first working groove (101) are provided with a first opening (102), a first rotary cutter (104) is installed on the first opening (102) through a telescopic arm (103), the side walls of the second working groove (105) are provided with a plurality of second openings (108), a second rotary cutter (1010) is installed on the second openings (108) through a first sliding rail (109), and the second working groove (105) is communicated with the elbow (2) through a third opening (1011) formed in the bottom;

the screening system comprises a motor (3), a shaker arm (301), a first telescopic rod (302), a first rotating joint (303), a screening groove (304), a fan (305) and a screen bar (307); the top of one end of the screening groove (304) is provided with a plurality of fans (305), the bottom of the screening groove (304) is formed by a plurality of screen bars (307) in a staggered mode, two sides of the screening groove (304) are respectively connected with a first rotating joint (303), one end of the first rotating joint (303) is connected with a first telescopic rod (302), the upper end of the first telescopic rod (302) is connected with the oscillating arm (301), and the oscillating arm (301) is connected with the motor (3);

the washing system comprises a sliding rail II (4), a telescopic rod II (401), a rotating joint II (402), a basket (403), a washing tank (5), a sound wave generator (501) and a valve I (502); the cleaning tank is characterized in that two sliding rails II (4) are arranged, two sides of the basket (403) are connected with two rotating joints II (402), the rotating joints II (402) are connected with the upper ends of two telescopic rods II (401), the lower ends of the telescopic rods II (401) are arranged on the sliding rails II (4) in a sliding mode, the cleaning tank (5) is located on a working table surface between the two sliding rails II (4), a plurality of sound wave generators (501) are arranged in the cleaning tank (5), and one side of the cleaning tank (5) is provided with a valve I (502);

the magnetic separation system comprises a sliding chute (6), a conveying crawler (601), a magnetic suction head (602), a third sliding door (603), a support (7), a first shifting plate (701) and a second shifting plate (702); the upper portion of the sliding groove (6) is located on one side of the cleaning groove (5), the lower portion of the sliding groove (6) is provided with a plurality of conveying tracks (601), the conveying tracks (601) are evenly provided with a plurality of magnetic suction heads (602), the bottom of the lower end of the sliding groove (6) is provided with a sliding door III (603), one side, away from the sliding groove (6), of each conveying track (601) is provided with a support (7), and the support (7) is provided with a shifting plate I (701) and a shifting plate II (702).

2. A magnetite pretreatment apparatus according to claim 1, characterized in that a rotary column (106) is provided in the center of the inside of the second working tank (105), and a plurality of impact rollers (107) are installed on the rotary column (106).

3. The magnetite pretreatment device according to claim 2, wherein one end of the elbow (2) is connected with the fixed groove (201), the working groove III (203) is connected with the fixed groove (201) in a nested manner through the rotating shaft I (202), a groove (204) is formed in the bottom of the working groove III (203), a rotary cutter III (206) is arranged above the groove (204), the upper end of the rotary cutter III (206) is connected with the lifting column (207), the lifting column (207) is supported and fixed through the connecting frame (208), and the sieving groove (304) is located on one side of the working groove III (203).

4. A magnetite pretreatment apparatus according to claim 3, characterized in that the third working tank (203) is provided with a first sliding door (205) on one side.

5. A magnetite pretreatment apparatus according to claim 4, characterized in that the screening trough (304) is further provided with a first flap gate (306) at one end.

6. A magnetite pretreatment equipment according to claim 5, characterized in that, the basket (403) is provided with a plurality of bar holes (404) on the side wall, the bottom of the basket (403) is uniformly provided with a plurality of round holes (405), and one side of the basket (403) is provided with a second sliding door (406).

7. A magnetite pretreatment apparatus according to any one of claims 1 to 6, characterized in that the chute (6) is inclined.

8. A magnetite pretreatment apparatus according to any one of claims 1 to 6, characterized in that the conveyor track (601) is provided with two layers, and the first and second shifting plates (701, 702) are respectively positioned flush with the two layers of conveyor track (601).

9. A magnetite pretreatment apparatus according to any one of claims 1 to 6, wherein the flotation system comprises a tank (8), a feeder (801), a bottom pipe network (802), a side pipe network (803), a valve II (804), a water machine (805), a rotating shaft II (806), a base (807), a flip door II (808), a suction head (9), a telescopic pipe I (901), a telescopic pipe II (902) and a pump machine (903); the water dispenser is characterized in that a feeding machine (801) and a water machine (805) are arranged on one side of the groove (8), a bottom pipe network (802) and a side pipe network (803) are arranged inside the groove (8), the bottom pipe network (802) and the side pipe network (803) are connected with the feeding machine (801) through pipelines, the water machine (805) is communicated with the groove (8) through a second valve (804), a second rotating shaft (806) is arranged at the bottom of the groove (8), the second rotating shaft (806) is arranged on a base (807), a second flip door (808) is arranged on one side of the groove (8), a suction head (9) is arranged above the groove (8), the upper end of the suction head (9) is sequentially connected with a first telescopic pipe (901) and a second telescopic pipe (902), the second telescopic pipe (902) is connected with the upper end of a pump machine (903), and.