CN204866160U - Aluminium oxide is abandoned red mud and is selected iron to select sand system - Google Patents

Abstract

The utility model provides an alumina waste red mud separation iron and sand separation system, which can extract iron powder and ore sand, turn red mud into treasure, and reduce red mud discharge. The utility model adopts the following technical solutions: an alumina waste red mud separation iron separation system, the bottom flow port of the first cyclone is connected with the cylinder screen, the sand grain outlet of the cylinder screen is connected with the groove body of the magnetic separator, and the magnetic The concentrator concentrate hopper is connected to the concentrate bucket, and the concentrate bucket is connected to the second cyclone through the delivery pump. The bottom flow outlet of the second cyclone is connected to the filter, and the solid outlet of the filter is connected to the concentrate through the conveying equipment. The overflow outlet of the first cyclone is connected to the tailings barrel, the tailings barrel is connected to the third cyclone, the third cyclone is connected to the vibrating screen, the solid outlet of the vibrating screen is connected to the sand pool, and the The liquid outlet is connected to the red mud storage.

Description

Alumina Waste Red Mud Iron Separation Sand Separation System

technical field

The utility model relates to a comprehensive utilization technology of alumina discarded red mud, in particular to a system for selecting iron and sand from alumina discarded red mud.

Background technique

With the continuous development of the alumina industry, the emission reduction of alumina discarded red mud has become a key task in the industry, and it is also a worldwide problem. In order to further reduce the amount of red mud emission reduction and reduce the pressure of red mud storage, a special design Invented the alumina waste red mud separation iron and sand separation system.

In the process of alumina production, a large amount of waste red mud will be produced. Red mud is a kind of red, powdery mud-like strong alkali solid waste with high water content left after the aluminum industry extracts aluminum from alumina. The composition of red mud is complex, containing alkali and a small amount of radioactive substances. Most of the red mud storage yards use the storage yard wet storage method and long-term storage after dehydration and drying. Using the storage yard wet storage method will easily cause filter water to seep into the ground and pollute the ground water quality. pollute the environment and endanger people's health.

In line with the principle of reducing the amount and harm of solid waste, fully rationally utilizing solid waste and conducting harmless disposal, the development and utilization of red mud can effectively promote environmental cleanliness, energy conservation and emission reduction, and the development of circular economy.

Contents of the invention

In order to solve the above technical problems, the utility model provides an alumina waste red mud separation iron separation system, which can extract iron powder and ore, turn red mud into treasure, and reduce red mud discharge.

The utility model adopts the following technical solutions:

An alumina waste red mud separation iron sand separation system, the bottom outlet of the first cyclone is connected to the cylindrical screen, the sand outlet of the cylindrical screen is connected to the tank of the magnetic separator, and the concentrate bucket of the magnetic separator is connected to the concentrate The barrel and the concentrate barrel are connected to the second cyclone through the delivery pump, the bottom flow outlet of the second cyclone is connected to the filter, and the solid outlet of the filter is connected to the concentrate pool through the conveying equipment; the first cyclone The overflow outlet is connected to the tailings bucket, the tailings bucket is connected to the third cyclone, the third cyclone is connected to the vibrating screen, the solid outlet of the vibrating screen is connected to the sand tank, and the liquid outlet of the vibrating screen is connected to the red mud storage.

The priority scheme of alumina waste red mud separation iron separation and sand separation system, the first cyclone, the second cyclone and the third cyclone all include a hollow cylinder and a cone below the cylinder, and the upper end of the cylinder is equipped with Feed port and overflow port, the bottom of the cone is provided with an underflow port.

The priority scheme of the alumina waste red mud separation iron separation system, the cylindrical screen includes a transmission mechanism, a slurry feed and slag discharge pipe connected to the transmission mechanism, a screen coaxially arranged with the pulp feed and slag discharge pipe, and a screen set in the screen The slag lifting plate, the flushing water pipe located above the screen, the slag collecting hopper located below the flushing water pipe, and the ore receiving hopper located at the lower part of the screen, and the ore receiving hopper is provided with a sand outlet.

The priority scheme of the alumina waste red mud separation iron separation and sand separation system. The vibrating screen includes a vibrating main body, a sieve plate located in the vibrating main body, a vibrator located under the vibrating main body, a solid outlet installed on the vibrating main body, and a vibrating main body installed under the vibrating main body. liquid outlet.

Alumina discarded red mud, iron and sand selection system is the preferred solution. The filter includes a tank body, a transmission device, a lubrication device, a main shaft connected to the transmission device, multiple distribution heads distributed on the main shaft and a stirring device under the main shaft.

Any one of the priority schemes of the alumina waste red mud separation iron separation and sand separation system, the magnetic separator includes a drive device, a separation ring driven by the drive device, an upper magnetic pole arranged around the lower ring section of the separation ring, and The lower magnetic pole, the double pulse device located under the sorting ring and the concentrate bucket located on the side below the sorting ring, the double pulse device includes the middle ore pulse mechanism, the middle crushing bucket connected with the middle ore pulse mechanism, the tailings pulse mechanism, The tailings hopper communicated with the tailings pulse mechanism.

The beneficial effects of the utility model:

Through the cyclone and cylinder sieve, the coarse slag can be screened out, the fine particles enter the magnetic separator, the concentrate enters the concentrate barrel, and enters the filter for filtration. The iron powder is transported to the concentrate pool, and the coarse slag is screened and formed Iron ore has realized the extraction of iron powder and ore sand, turning red mud from waste into treasure, reducing the discharge of red mud, and reducing the stacking pressure of red mud dams.

Description of drawings

Fig. 1 is the structural representation of the selected embodiment of the utility model;

Fig. 2 is the structural representation of the first, second or third cyclone of the utility model;

Fig. 3 is a schematic side view of a cylinder screen of a selected embodiment of the utility model;

Fig. 4 is the schematic diagram of the front view of the cylindrical screen of the selected embodiment of the utility model:

Fig. 5 is the structural representation of the vibrating screen of the selected embodiment of the utility model:

Fig. 6 is the schematic diagram of the front view of the magnetic separator of the selected embodiment of the utility model:

Fig. 7 is the schematic side view of the magnetic separator of the selected embodiment of the utility model:

Fig. 8 is the structural representation of the filter machine of the selected embodiment of the utility model:

In the figure 1. First cyclone, 2. Cylindrical screen, 3. Magnetic separator, 4. Second cyclone, 5. Tailings barrel, 6. Concentrate barrel, 7. Filter, 8. Refining Mining pool, 9, third cyclone, 10, vibrating screen, 11, red mud storage, 12, sand tank, 13, feed inlet, 14, cone, 15, bottom flow outlet, 16, overflow outlet, 17 , cylinder, 21, flushing water pipe, 22, slag lifting plate, 23, screen, 24, slag collecting hopper, 25, pulp feeding and slag discharging pipe, 26, transmission mechanism, 27, ore receiving hopper, 28, sand outlet, 101. Vibration main body, 102. Vibrator, 103. Liquid outlet, 104. Solid outlet, 105. Vibrating screen, 301. Sorting ring, 302. Tailings pulse, 303. Lower magnetic pole, 304. Middle crushing bucket, 305 , Medium ore pulse mechanism, 306, concentrate bucket, 307, feed bucket, 308, upper magnetic pole, 309, excitation coil, 310, tailings bucket, 311, concentrate bucket, 312, reducer, 71, flushing water pipe, 72, slag lifting plate, 73, screen cloth, 74, slag collecting hopper, 75, slurry feeding slag discharge pipe, 76, transmission mechanism, 77, ore receiving hopper.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to accompanying drawing 1, a kind of aluminum oxide discarded red mud separation iron sand selection system, the first cyclone 1 overflow outlet is connected with the cylinder screen 2, the sand outlet 28 of the cylinder screen 2 is connected with the groove of the magnetic separator 3 body connection, the magnetic separator 3 concentrate hopper is connected to the concentrate bucket 6, the concentrate bucket 6 is connected to the second cyclone 4 through the delivery pump, and the bottom flow outlet of the second cyclone 4 is connected to the filter 7, and the filter The solid outlet of the machine 7 is connected to the concentrate pool 8 through the conveying equipment; the bottom outlet of the first cyclone 1 is connected to the tailings bucket 5, the tailings bucket 5 is connected to the third cyclone 9, and the third cyclone 9 is connected to the The vibrating screens 10 are connected, the solid outlet of the vibrating screen 10 is connected to the sand tank 12, and the liquid outlet of the vibrating screen 10 is connected to the red mud storage 11.

With reference to accompanying drawing 2, the first cyclone 1, the second cyclone 4 and the third cyclone 9 all comprise a hollow cylinder 17 and a cone 14 positioned below the cylinder 17, and the upper end of the cylinder 17 is provided with an inlet. The feed port 13 and the overflow port 16 are provided with an underflow port 15 at the bottom of the cone 14 . The cyclone relies on centrifugal sedimentation for separation, and the two-phase mixed liquid to be separated is fed into the feed port 13 on the upper part of the cyclone cylinder 17 under a certain pressure, thereby forming a strong rotational movement in the cyclone, Due to the density difference between the light phase and the heavy phase or the particle size difference between the coarse and fine particles, the magnitude of the centrifugal force and fluid drag force is different, and most of the light phase (or fine particle grade) is discharged through the cyclone overflow port 16 , while the heavy phase (or coarse particle size) is discharged from the underflow port 15.

Referring to Fig. 3 and Fig. 4, the cylindrical screen 2 includes a transmission mechanism 26, a pulp feed and slag discharge pipe 25 connected to the transmission mechanism 26, a screen 23 coaxially arranged with the pulp feed and slag discharge pipe 25, and a screen 23 arranged in the screen 23. The slag lifting plate 22, the flushing water pipe 21 positioned at the top of the screen 23, the slag collecting hopper 24 positioned at the bottom of the flushing water pipe 21, and the ore-connecting hopper 27 positioned at the bottom of the screen 23, the ore-connecting hopper 27 is provided with a sand outlet 28. The cylinder screen 2 rotates under the drive of the transmission mechanism 26, and the ore pulp is fed from the lower left part of the feed slag discharge pipe 25 to the circumference of the screen 23, and the granular minerals and water fall through the screen 23 into the ore receiving hopper 27, Flow along the slurry inlet and slag discharge pipe 25 to the magnetic separator 3 for separation, and the coarse particles are lifted to the top by the slag extractor 22 and washed into the slag collection hopper 24 by flushing water to be discharged.

With reference to accompanying drawing 5, vibrating screen comprises vibrating main body 101, is positioned at the sieve plate 105 in vibrating main body 101, is positioned at vibrating exciter 102 below vibrating main body 101, is arranged on the solid outlet 104 on vibrating main body 101, is arranged on vibrating main body 101 below. The liquid outlet 103.

With reference to accompanying drawing 8, filter comprises tank body 73, transmission device 71, lubricating device 72, the main shaft 75 that links to each other with transmission device 71, a plurality of filter discs 74 that are distributed on the main shaft 75, the distribution head that is installed on main shaft 75 ends 76 and the stirring device 77 positioned at the main shaft 75 below.

With reference to accompanying drawing 6 and Fig. 7, magnetic separator 3 comprises frame 311, driving device 312, the sorting ring 301 that is driven 312 by described driving device, the upper magnetic pole that is located at described sorting ring 301 lower ring sections around 308 and the lower magnetic pole 303, the excitation coil 309 arranged on the lower magnetic pole 303, the double pulse device located under the separation ring 301, the concentrate bucket 306 located on the side below the separation ring 301 and the ore bucket located above the upper magnetic pole 308 307 , the dual pulse device includes a middling pulse mechanism 305 , a mid-crushing bucket 304 communicating with the middling pulse mechanism 305 , a tailings pulse mechanism 302 , and a tailings hopper 310 communicating with the tailings pulse mechanism 302 .

The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit it. Although the utility model has been described in detail through the examples, those skilled in the art should be able to modify or modify some technical features with reference to the specific methods of the utility model Perform equivalent replacements, but without departing from the spirit of the technical solution of the utility model, the above-mentioned changes or equivalent replacements should fall within the scope of the technical solution claimed by the utility model.

Claims (6)

1. A system for selecting iron and sand from alumina discarded red mud, characterized in that: the bottom outlet of the first cyclone is connected with the cylindrical screen, the grit outlet of the cylindrical screen is connected with the tank body of the magnetic separator, and the magnetic separator The concentrate hopper is connected to the concentrate barrel, and the concentrate barrel is connected to the second cyclone through the delivery pump, and the bottom flow outlet of the second cyclone is connected to the filter, and the solid outlet of the filter is connected to the concentrate pool through the conveying equipment The overflow outlet of the first cyclone is connected to the tailings bucket, the tailings bucket is connected to the third cyclone, the third cyclone is connected to the vibrating screen, the solid outlet of the vibrating screen is connected to the sand tank, and the liquid outlet of the vibrating screen Connected to the red mud reservoir. 2. According to the described alumina discarded red mud iron separation and sand separation system according to claim 1, it is characterized in that: the first cyclone, the second cyclone and the third cyclone all comprise a hollow cylinder and are located in the cylinder For the cone below, the upper end of the cylinder is provided with a feed port and an overflow port, and the bottom of the cone is provided with an underflow port. 3. According to claim 1, the alumina waste red mud separation iron and sand separation system is characterized in that: the cylindrical screen includes a transmission mechanism, a slurry feeding and slagging pipe connected to the transmission mechanism, and a coaxial arrangement with the pulp feeding and slagging pipe The screen, the slag lifting plate installed in the screen, the flushing water pipe above the screen, the slag collecting hopper below the flushing water pipe and the ore receiving hopper at the lower part of the screen, and the ore receiving hopper is provided with a sand outlet. 4. According to claim 1, the alumina waste red mud separation iron and sand separation system is characterized in that: the vibrating screen includes a vibrating body, a sieve plate located in the vibrating body, an exciter located below the vibrating body, and a vibrating body arranged on the vibrating body The solid outlet on the upper part and the liquid outlet under the vibration main body. 5. According to claim 1, the alumina discarded red mud iron separation and sand separation system is characterized in that: the filter includes a tank body, a transmission device, a lubrication device, a main shaft connected to the transmission device, and a plurality of distributing parts distributed on the main shaft. head and stirring device located under the spindle. 6. According to any one of claims 1 to 5, the alumina waste red mud separation iron separation and sand separation system is characterized in that: the magnetic separator includes a driving device, a sorting ring driven by the driving device, and is located on the The upper and lower magnetic poles around the lower ring section of the separation ring, the double pulse device located under the separation ring and the concentrate bucket located on the side below the separation ring. The double pulse device includes a middling pulse mechanism and a middling pulse The middle crushing bucket connected with the mechanism, the tailings pulse mechanism, and the tailings bucket connected with the tailings pulse mechanism.