Crushing device for recycling mine tailings

Abstract

The utility model discloses a crushing device for recycling mine tailings, which belongs to the technical field of mine tailing treatment technologies and comprises a roller sand making machine, and a multi-stage screening mechanism and a dust suppression mechanism are arranged above the roller sand making machine. The multi-stage screening mechanism comprises a screening bin, a first screen with the hole diameter being 5 mm and a second screen with the hole diameter being 50 mm are obliquely installed in the screening bin, a guide plate is arranged below the first screen, the guide plate of the screening bin is fixedly connected with a first discharging hopper, a second discharging hopper is arranged below the second screen, and a discharging pipeline is arranged on the right side of the second screen. And the dust suppression mechanism comprises a cover plate covering the screening bin, four sets of dust suction pipelines are connected to the rear end of the screening bin in an inserted mode, and connecting pipes are fixedly connected to the rear ends of the dust suction pipelines. And the tailing treatment quality is guaranteed, and the problem of dust pollution of a traditional device is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of crushing devices for mine tailings recycling in the technical field of mine tailings treatment. BACKGROUND

[0002] Mine tailings are solid waste left over after extracting target concentrate in the process of ore dressing, mainly composed of gangue minerals (such as quartz, feldspar, calcite, etc.) and a small amount of valuable metals not completely separated, with characteristics of fine particles, small density, easy dust, easy loss when encountering water, etc. Its chemical composition is mainly SiO2, containing a small amount of Ca, Mg, Fe oxides and potential harmful elements (such as arsenic, cadmium, etc.). Large-scale storage will occupy land, pollute water and soil and atmosphere, and may cause landslides or mudslides. However, physical stabilization, chemical consolidation or resource utilization (such as producing building materials, backfilling mined-out areas or preparing soil conditioners) can reduce environmental risks.

[0003] In combination with the existing technology of mine tailings recycling, it is found that the existing primary tailings have large particle size differences. The existing crushing device for mine tailings recycling cannot effectively process smaller (particle size <5mm) and larger (particle size >50mm) tailings. Directly crushing smaller tailings leads to over-crushing of fine particles, affecting the strength of the filling body, while larger tailings are prone to jamming the feed inlet. In addition, micron-sized particles are easily generated during the transportation and screening of tailings, which can raise dust and cause workshop and environmental pollution. Therefore, the utility model designs a crushing device for mine tailings recycling to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a crushing device for mine tailings recycling to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A kind of crushing device for mine tailings recycling, including roll sand machine, multiple-stage screening mechanism and dust suppression mechanism are equipped above the roll sand machine;The multiple-stage screening mechanism includes screening bin, the inside of the screening bin is obliquely installed with first screen with aperture 5mm and second screen with aperture 50mm, the lower side of the first screen is provided with guide plate, the guide plate of the screening bin is fixedly connected with first discharge hopper, the lower side of the second screen is provided with second discharge hopper, the right side of the second screen is provided with discharge pipeline;The dust suppression mechanism includes cover plate covering screening bin, the rear end of the screening bin is inserted with four groups of dust extraction pipeline, the rear end of the dust extraction pipeline is fixedly connected with connecting pipe, four groups of the dust extraction pipeline are communicated by connecting pipe, the lower end of the connecting pipe is fixedly connected with conveying pipeline, the rear of the conveying pipeline is provided with collection bin, the four groups of dust extraction pipeline are communicated by connecting pipe to conveying pipeline to collection bin, the inside of the collection bin is provided with dust box, the upper end of the collection bin is fixedly installed with gas control pipe head, the inside of the gas control pipe head is configured with fan driven by driving motor.

[0007] Optionally, the first screen and the second screen are arranged with 5° inclination from left high to right low, and the front and rear ends of the screening bin are supported by spring connection columns.

[0008] Optionally, the lower end of the first discharge hopper is fixedly installed with a material guide plate, and the second discharge hopper is connected to the feed inlet of the roll sand machine.

[0009] Optionally, the left end of the cover plate is provided with a feeding hopper, and the upper end of the cover plate is hingedly connected with a door body.

[0010] Optionally, the top of the gas control pipe head is provided with an exhaust net, and the bottom of the gas control pipe head is provided with a group of partition plates with air grooves.

[0011] Optionally, the left end of the first discharge hopper is fixedly installed with a first vibration motor, and the right end of the first discharge hopper is fixedly installed with a second vibration motor.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、In the utility model, the multiple-stage screening mechanism is arranged, the 5° inclination of the first screen and the second screen is matched with the vibration motor, three-stage material automatic classification is realized, the screening efficiency is greatly improved, the spring support structure effectively buffers the vibration impact, the tailings over-crushing is effectively avoided, the strength of the filling body is ensured, the tailings processed by the roll sand machine are ensured to be in the best processing range, and the crushing operation is effectively carried out.

[0014] 2、In the utility model, the dust suppression mechanism is arranged, the dust extraction pipeline distributed from left to right is matched with the negative pressure collection system, dust can be effectively captured, and the dust pollution problem in the tailings crushing process of mine is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic diagram of the utility model in perspective view;

[0016] Figure 2 It is a structure schematic diagram of the utility model in plan view;

[0017] Figure 3 It is a structure schematic diagram of the utility model in left view;

[0018] Figure 4 It is a structure schematic diagram of the utility model in perspective view from above;

[0019] Figure 5 It is a structure schematic diagram of the utility model in perspective view from behind;

[0020] Figure 6 It is a structure schematic diagram of the utility model in perspective view from behind; Figure 1 ;

[0021] Figure 7 It is a structure schematic diagram of the utility model in perspective view from behind; Figure 2 ;

[0022] Figure 8 It is a structure schematic diagram of the utility model in perspective view from behind; Figure 3 ;

[0023] Figure 9 It is a structure schematic diagram of the utility model in perspective view from behind; Figure 4 .

[0024] In the figure: 1, roll sand machine;2, multi-stage screening mechanism;201, screening bin;202, first screen;203, second screen;204, guide plate;205, first discharge hopper;206, material guide plate;207, first vibration motor;208, second vibration motor;209, second discharge hopper;210, discharge pipeline;211, spring;212, support column;3, dust suppression mechanism;301, cover plate;302, injection hopper;303, door body;304, dust extraction pipeline;305, connecting pipe;306, conveying pipeline;307, collection bin;308, dust box;309, gas control pipe head;310, exhaust net;311, driving motor;312, fan;313, group partition plate;314, air vent groove. DETAILED DESCRIPTION

[0025] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation to the utility model. In addition, the term "first", "second" and so on are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and so on can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely in the description of the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor are within the scope of protection of the utility model.

[0028] Please refer to Figures 1-9The utility model discloses an embodiment of a kind of crushing devices for mine tailings recycling, including roll sand making machine 1, and roll sand making machine 1 upper is equipped with multistage screening mechanism 2 and dust suppression mechanism 3;Multistage screening mechanism 2 includes screening bin 201, and the inside of screening bin 201 is obliquely installed with the first screen 202 of aperture 5mm and the second screen 203 of aperture 50mm, and the lower of first screen 202 is provided with guide plate 204, and guide plate 204 of screening bin 201 is fixedly connected with first hopper 205, and the lower of second screen 203 is equipped with second hopper 209, and the right side of second screen 203 is provided with discharge pipeline 210;Dust suppression mechanism 3 includes cover plate 301 covering screening bin 201, and the rear end of screening bin 201 is inserted with four groups of dust extraction pipeline 304, and the rear end of dust extraction pipeline 304 is fixedly connected with connecting pipe 305, and four groups of dust extraction pipeline 304 are communicated by connecting pipe 305, and the lower end of connecting pipe 305 is fixedly connected with conveying pipeline 306, and the rear of conveying pipeline 306 is provided with collection bin 307, and four groups of dust extraction pipeline 304 are communicated by connecting pipe 305 to conveying pipeline 306 to collection bin 307, and the inside of collection bin 307 is provided with dust box 308, and the upper end of collection bin 307 is fixedly installed with control gas pipe head 309, and the inside of control gas pipe head 309 is configured with fan 312 driven by driving motor 311.

[0029] First screen 202 (aperture 5mm) and second screen 203 (aperture 50mm) are arranged in screening bin 201 with 5 ° inclination.

[0030] Wherein, after tailings raw materials are poured from pouring hopper 302, first contact first screen 202, and the particle of particle size <5mm directly passes through sieve hole, and slides into first hopper 205 by guide plate 204, and is oriented output by guide plate 206, to facilitate direct recovery, and the particle of particle size 5-50mm continues to slide to second screen 203, and qualified particle enters second hopper 209 and is conveyed to roll sand making machine 1 feed inlet, to carry out crushing operation, and the material of particle size >50mm is discharged from system along the inclined surface of second screen 203 through discharge pipeline 210. The above operation is smoothly carried out, and needs to rely on first vibration motor 207, second vibration motor 208, spring 211 connected support column 212 continues high-frequency vibration operation, to ensure that tailings raw materials are driven along first screen 202 of aperture 5mm and second screen 203 of aperture 50mm.

[0031] Dust suppression mechanism 3 is composed of dust extraction unit, collection unit and airflow control part.

[0032] Dust extraction unit: four groups of dust extraction pipeline 304 are arranged from left to right at the rear end of screening bin 201, and are converged to conveying pipeline 306 through connecting pipe 305, and door body 303 is installed on cover plate 301 in the form of hinged, to facilitate opening, to facilitate maintenance operation;

[0033] The collection unit is characterized in that the conveying pipeline 306 is connected with the collection bin 307, and the dust box 308 is arranged in the collection bin 307 and can be pulled out;

[0034] The airflow control unit is characterized in that the top gas control pipe head 309 is internally provided with the driving motor 311 and the fan 312 to form a negative pressure source, and the air passage 314 is used for dredging airflow, so that the negative pressure source can play a role in adsorbing dust.

[0035] The working principle of the utility model is: the device realizes efficient treatment of tailings through the synergistic effect of the multi-stage screening mechanism 2 and the dust suppression mechanism 3, and before work, the roller sand making machine 1, the first vibration motor 207, the second vibration motor 208 and the driving motor 311 need to be connected to electricity and connected to the control terminal. When working, the raw materials enter the screening bin 201 through the feeding hopper 302 of the cover plate 301, and first pass through the first screen 202 inclined by 5° to carry out primary screening: the fine material with a particle size of <5 mm enters the first discharge hopper 205 through the guide plate 204 and is guided out by the guide plate 206, and is directly recycled (without entering the crushing process), effectively avoiding over-crushing of tailings and ensuring the strength of the filling body; the medium material with a particle size of 5-50 mm passes through the second screen 203 and enters the second discharge hopper 209 to be conveyed to the roller sand making machine 1 for crushing, and the medium material with a particle size of 5-50 mm matches the best processing range of the roller sand making machine 1; the coarse material with a particle size of >50 mm is discharged through the discharge pipeline 210 to prevent the feeding port from being stuck and the roller sand making machine 1 from being overloaded. In the dust suppression mechanism 3 running synchronously, the four groups of dust extraction pipelines 304 extract the screening dust through the connecting pipes 305 and the conveying pipelines 306 into the collection bin 307 under the negative pressure generated by the driving motor 311 driving the fan 312, the dust is slowed down by the group partition plate 313 and then settles in the dust box 308, and the gas is discharged through the exhaust net 310 of the gas control pipe head 309.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A crushing device for recycling mine tailings, comprising a roller sand making machine (1), characterized in that: A multi-stage screening mechanism (2) and a dust suppression mechanism (3) are provided above the roller sand making machine (1); the multi-stage screening mechanism (2) comprises a screening bin (201), a first screen (202) with a pore size of 5 mm and a second screen (203) with a pore size of 50 mm are obliquely installed inside the screening bin (201), a guide plate (204) is provided below the first screen (202), the guide plate (204) of the screening bin (201) is fixedly connected to a first lower hopper (205), a second lower hopper (209) is provided below the second screen (203), and a discharge pipe (210) is provided on the right side of the second screen (203); the dust suppression mechanism (3) comprises a cover plate (301) covering the screening bin (201), a rear portion of the screening bin (201) Four groups of dust extraction pipes (304) are plugged into the end, and the rear ends of the dust extraction pipes (304) are fixedly connected to connecting pipes (305). The four groups of dust extraction pipes (304) are connected through the connecting pipes (305). The lower ends of the connecting pipes (305) are fixedly connected to the conveying pipes (306). A collecting bin (307) is provided at the rear of the conveying pipes (306). The four groups of dust extraction pipes (304) are connected to the conveying pipes (306) and the collecting bin (307) through the connecting pipes (305). A dust box (308) is provided inside the collecting bin (307). An air control pipe head (309) is fixedly installed at the upper end of the collecting bin (307). A fan (312) driven by a drive motor (311) is provided inside the air control pipe head (309).

2. A crushing device for recycling mine tailings according to claim 1, characterized in that: The first screen (202) and the second screen (203) are arranged with a 5° tilt, with the left side higher and the right side lower. The front and rear ends of the screening bin (201) are connected to the support column (212) via a spring (211).

3. The crushing device for recycling mine tailings according to claim 1, characterized in that: A material guide plate (206) is fixedly mounted on the lower end of the first lower hopper (205), and the second lower hopper (209) is connected to the feed port of the roller sand making machine (1).

4. The crushing device for recycling mine tailings according to claim 1, characterized in that: A material injection hopper (302) is provided at the left end of the cover plate (301), and a door body (303) is hingedly connected to the upper end of the cover plate (301).

5. The crushing device for recycling mine tailings according to claim 1, characterized in that: An exhaust net (310) is installed on the top of the air control pipe head (309), and a group partition plate (313) with a ventilation groove (314) is provided on the bottom of the air control pipe head (309).

6. The crushing device for recycling mine tailings according to claim 1, characterized in that: A first vibration motor (207) is fixedly mounted on the left end of the first lower hopper (205), and a second vibration motor (208) is fixedly mounted on the right end of the first lower hopper (205).

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