CN209536471U - For conveying the air-driven chute of aluminium oxide - Google Patents

Abstract

The utility model relates to aluminum electrolysis technology fields.Air-driven chute provided by the utility model for conveying aluminium oxide includes the first air-driven chute.First air-driven chute includes gas chamber and the material room above gas chamber, is equipped with boiling plate between gas chamber and material room.The bottom of first air-driven chute is equipped with more than two pulp cutlets, and multiple discharge ports pass through gas chamber and boiling plate and are connected to material room, and the width of each and every one each discharge port is less than the width of boiling plate.Region between the inner wall and discharge port for being located at material room of boiling plate forms fluidization regions.The bottom of first air-driven chute is provided with more than two second air-driven chutes, each second air-driven chute is connected in the lower section of gas chamber with corresponding discharge port.The transfer efficiency of aluminium oxide not only can be improved in the utility model, but also easy to maintenance.

Description

For conveying the air-driven chute of aluminium oxide

Technical field

The utility model relates to aluminum electrolysis technology fields, and in particular to a kind of for conveying the air-driven chute of aluminium oxide.

Background technique

During electrolytic aluminium, the feeding system of conveying electrolytic aluminium raw alumina is very important technique production and sets It is standby.In general, as shown in Figure 1, multiple electrolytic cells 10 are arranged side by side in potroom.Aluminium oxide feeding system generally includes one Main air-driven chute 11 is set beside multiple electrolytic cells, and then position of the main air-driven chute 11 above each electrolytic cell is provided with One point of air-driven chute 12.The direction shown in Fig. 1 is from left to right after alumina raw material enters in main air-driven chute as a result, Flowing, then be transported in corresponding electrolytic cell by each point of air-driven chute respectively.In existing design, generally using under side The mode of material, the i.e. side openings in main air-driven chute, the design of each point of air-driven chute allow aluminium oxide in the side of main air-driven chute Material enters in point air-driven chute from the outflow of the side of main air-driven chute.Since alumina material is from the distal end in air-driven chute Proximal end is transported to as linear motion, divides in air-driven chute if alumina material is allowed to enter from side, needs to apply certain power It is that alumina material changes direction, alumina material could be flowed out from side.Due to the pressure of main air-driven chute during transportation Fluctuation is larger, is easily damaged equipment.

Therefore, existing some schemes are the bottoms that will divide air-driven chute that main air-driven chute is arranged in, but are led so pneumatic Chute is then easy to be blocked in linear transmission direction, and flowing of the logistics in the main air-driven chute just can only be by inertia after afterflow It is dynamic, cause material not can be carried out long-distance sand transport.For the potroom with multiple electrolytic cells, a main air-driven chute cannot Multiple electrolytic cells are fed simultaneously, needs to build multiple main air-driven chutes, undoubtedly increases the cost of equipment in this way.

Therefore, in view of the deficiencies of the prior art, it is necessary to a kind of novel air-driven chute for being used to convey aluminium oxide is designed, To improve the feed efficiency of aluminium oxide.

Summary of the invention

The purpose of this utility model is to provide a kind of novel air-driven chutes for being used to convey aluminium oxide, to improve oxygen Change the feed efficiency of aluminium.

Air-driven chute provided by the utility model for conveying aluminium oxide includes the first air-driven chute.First air-driven chute Material room including gas chamber and above gas chamber is equipped with boiling plate between gas chamber and material room.The bottom of first air-driven chute is equipped with More than two pulp cutlets, multiple discharge ports pass through gas chamber and boiling plate and are connected to material room, and the width of each discharge port Less than the width of boiling plate.Region between the inner wall and discharge port for being located at material room of boiling plate forms fluidization regions.First is pneumatic The bottom of chute is provided with more than two second air-driven chutes, each second air-driven chute is unloaded in the lower section of gas chamber with corresponding Material mouth connection.

Preferably, in the width direction of boiling plate, discharge port is located at the middle position of boiling plate；The width side of boiling plate To vertical with flow direction of the aluminium oxide on boiling plate.

Preferably, multiple discharge ports are rectangle.

Preferably, discharge port has the side plate being obliquely installed in the side of supplied materials, and boiling plate extends on side plate.

Preferably, the lower section of the first air-driven chute is equipped with access hole, and access hole is connected to gas chamber.

Preferably, the two sides of gas chamber are respectively provided with an exhaust outlet.

By above-mentioned scheme as it can be seen that compared with the existing technology, the utility model has the beneficial effects that: the first air-driven chute It is acted on by the air blowing of gas chamber and boiling plate, flow aluminium oxide can in the material room of the first air-driven chute with fluidization.Work as oxygen When change aluminium flow to discharge port, a part of aluminium oxide is entered in the second air-driven chute by discharge port, is eventually entered into electrolytic cell. Another part aluminium oxide then continues to flow forward by fluidization regions, to make aluminium oxide that can enter multiple second air-driven chutes In.Access hole can be passed through in the case where boiling plate breakage in the access hole of the bottom of the first air-driven chute setting connection gas chamber The alumina powder discharge of gas chamber will be fallen into.It is arranged in gas chamber two sides exhaust outlet, usually closes, if there is aluminium oxide in gas chamber, Openable one of exhaust outlet simultaneously accesses compressed air, then opens another exhaust outlet again, thus by the indoor oxidation of gas The blowout of aluminium powder body.As it can be seen that the transfer efficiency of aluminium oxide not only can be improved in the utility model, but also easy to maintenance.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that prior art aluminium oxide feeding system is located on electrolytic cell.

Fig. 2 is the structural schematic diagram of the utility model first embodiment.

Fig. 3 is the structural schematic diagram that the discharge port of the utility model first embodiment is arranged on the first air-driven chute.

Fig. 4 is the structural schematic diagram of the utility model second embodiment.

Fig. 5 is the enlarged view of a-quadrant shown in Fig. 4.

Specific embodiment

The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.In order to which the present embodiment is better described, The certain attachmentes of attached drawing have omission, zoom in or out；To those skilled in the art, in attached drawing certain known features and It illustrates to omit will be understood by.

In two embodiments below, the arrangement mode of each electrolytic cell is remained by existing layout shown in Fig. 1 Be arranged, and the feeder process of aluminium oxide feeding system be also entered in main air-driven chute to flow by alumina raw material, then It is transported in corresponding electrolytic cell by each point of air-driven chute respectively.

First embodiment

Referring to fig. 2 with Fig. 3, the air-driven chute for conveying aluminium oxide in the present embodiment includes the first air-driven chute 2, the One air-driven chute 2 includes gas chamber 21 and the material room 22 above gas chamber 21, is equipped with boiling plate 23 between gas chamber 21 and material room 22. Certainly, air inlet 210 is provided on gas chamber 21.For external gas after air inlet enters gas chamber 21, gas passes through boiling Plate 23 makes to expect to generate upward air-flow in room 22.Aluminium oxide enters after material room 22, and it is solid to expect that the upward gas in room 22 can make The alumina raw material of state is in fluidization flow forward.In the present embodiment, air compartment 21 and material room 22 are all rectangular-shaped, i.e., first Air-driven chute 2 is rectangular-shaped, while boiling plate 23 is horizontally disposed rectangle boiling plate.The bottom of first air-driven chute 2 is equipped with More than two pulp cutlets 20, multiple discharge ports 20 both pass through gas chamber 21 and boiling plate 23 and are connected to material room 22.

Fig. 2 shows the structural schematic diagram of the air-driven chute of the present embodiment, Fig. 3 is then shown in discharge port 20 in chute Structural schematic diagram on radial section.The shape of discharge port 20 be rectangle, and be located at boiling plate 13 width direction on centre Position.The width direction of boiling plate 13 is vertical with flow direction of the aluminium oxide on boiling plate 13.Direction as shown in Figure 2, this In embodiment, flow direction of the aluminium oxide on boiling plate 13 is from left to right.In other embodiments, discharge port 20 can also be with For circle, polygon etc..In conjunction with Fig. 2 and Fig. 3 as it can be seen that the width of discharge port 20 be less than boiling plate 23 width, discharge port 20 In the centre of boiling plate 23, i.e. the periphery of discharge port 20 is still provided with boiling plate 23.Boiling plate 23 is located at the interior of material room 22 Two regions between wall 220 and discharge port 20 form fluidization regions 231.

It can thus be concluded that when the fluidised alumina raw material in material room 22 flow to the position of first discharge port 20, First discharge port 20 will not block the flowing of whole aluminium oxide in material room 22.Except the alumina raw material of a part enters first Other than among a discharge port, the fluidization regions 231 that remaining partial oxidation aluminum feedstock then passes through 20 two sides of discharge port continue to flow forward It is dynamic.

The bottom of first air-driven chute 2 is provided with multiple second air-driven chutes 3, each second air-driven chute 3 is in gas The lower section of room 21 is connected with corresponding discharge port 20, and the second air-driven chute 3 finally leads to corresponding electrolytic cell.Second pneumatic slips No setting is required the discharge port 20 as shown in Figure 3 of slot 3, the aluminium oxide in the second air-driven chute 3 is directly in the second air-driven chute 3 End is discharged into electrolytic cell.It can be seen that the alumina raw material in the first air-driven chute 2 can pass through multiple second wind respectively Dynamic chute 3 is flowed into corresponding electrolytic cell.

Certainly, the model of the first air-driven chute 2 is greater than the model of the second air-driven chute 3.First air-driven chute 2 uses 200 Type air-driven chute, the second air-driven chute 3 use 80 type air-driven chutes.

In addition, referring to fig. 2, being respectively provided with an exhaust outlet 211 in the two sides of gas chamber 21, the air draft of 21 two sides of gas chamber being arranged in Mouth 211, is usually closed.If there is aluminium oxide in gas chamber, openable one of exhaust outlet simultaneously accesses compressed air, then beats again Another exhaust outlet is opened, so that the indoor aluminium oxide of gas be blown out.It can be at any time and quickly in gas chamber 21 by exhaust outlet 211 Alumina powder be purged, such as every progresss once oxidation aluminium feed after pass through exhaust outlet quickly to a small amount of in gas chamber 21 Alumina powder is purged.Further, it is also possible to be equipped with access hole 24 in the lower section of the first air-driven chute 2, access hole 24 is connected to To gas chamber 21.Access hole 24 is closed state when not in use.When equipment reaches certain time limit, boiling plate using the time 23 are possible to generate damaged situation.If boiling plate 23 is damaged, expects that the alumina powder in room 22 is known from experience and enter in gas chamber 21 simultaneously Generate packing phenomenon.At this point, the alumina powder fallen into gas chamber 21 can be discharged by access hole 24.

In summary, compared with the existing technology, in the present embodiment, when aluminium oxide flow to first discharge port, one Partial oxidation aluminium is entered in first the second air-driven chute by the first discharge port, hence into first electrolytic cell.It is another Partial aluminium oxide then continues to flow forward by fluidization regions, to make aluminium oxide that can continue into other multiple second wind In dynamic chute, and by other second air-driven chutes, into other electrolytic cells.The pneumatic of the utility model embodiment slips The transfer efficiency of aluminium oxide not only can be improved in slot, but also has the characteristics that easy to maintenance.

Second embodiment

The present embodiment is further improved on the basis of first embodiment.Relative to first embodiment, this reality It applies example mainly to improve the discharge port 20 of first embodiment, therefore the present embodiment only carries out improved discharge port part Illustrate, the other structures of the air-driven chute of the present embodiment are then referring to first embodiment.

Referring to fig. 4 with Fig. 5, discharge port 20 is still rectangle discharge port, and the width of discharge port 20 is less than the width of boiling plate 23 Degree, discharge port 20 are located at the centre of boiling plate 23, two be located between the inner wall 220 and discharge port 20 for expecting room 22 of boiling plate 23 A region forms fluidization regions.In direction as shown in Figure 4, direction as shown in Figure 2, in the present embodiment, aluminium oxide is in boiling plate Flow direction on 13 is from left to right.Discharge port 20 has in the side (left side i.e. shown in Fig. 4) of supplied materials to be obliquely installed Side plate 201, and boiling plate 23 some extend on the side plate 201 that discharge port 20 is obliquely installed.It can be seen that material room 22 Middle alumina raw material can enter in discharge port in inclined direction along boiling plate 23, and aluminium oxide can be made to be rapidly introduced into discharge port 20 In.

The above is only the preferred embodiment of the present invention, is not intended to limit the invention.It is all in the utility model Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model Within enclosing.

Claims (6)

1. the air-driven chute for conveying aluminium oxide, including the first air-driven chute, the bottom of first air-driven chute are provided with More than two second air-driven chutes, it is characterised in that:

First air-driven chute includes gas chamber and the material room above the gas chamber, is set between the gas chamber and the material room There is boiling plate；

Along the direction of aluminium oxide flowing, the bottom of first air-driven chute is equipped with more than two discharge ports side by side, each The discharge port both passes through the gas chamber and the boiling plate and is connected to the material room, and the width of each discharge port The width of the respectively less than described boiling plate, the region shape between the inner wall and the discharge port of the material room of the boiling plate At fluidization regions；

Each described second air-driven chute is connected in the lower section of the gas chamber with the corresponding discharge port.

2. according to claim 1 for conveying the air-driven chute of aluminium oxide, it is characterised in that:

In the width direction of the boiling plate, the discharge port is located at the middle position of the boiling plate, the boiling plate Width direction is vertical with flow direction of the aluminium oxide on the boiling plate.

3. according to claim 2 for conveying the air-driven chute of aluminium oxide, it is characterised in that:

Multiple discharge ports are rectangle.

4. according to claim 3 for conveying the air-driven chute of aluminium oxide, it is characterised in that:

The discharge port has the side plate being obliquely installed in the side of supplied materials, and the boiling plate extends on the side plate.

5. according to any one of claims 1 to 4 for conveying the air-driven chute of aluminium oxide, it is characterised in that:

The lower section of first air-driven chute is equipped with access hole, and the access hole is connected to the gas chamber.

6. according to any one of claims 1 to 4 for conveying the air-driven chute of aluminium oxide, it is characterised in that:

The two sides of the gas chamber are respectively provided with an exhaust outlet.