CN201280439Y

CN201280439Y - Single-layer setting tank for aluminum oxide production

Info

Publication number: CN201280439Y
Application number: CNU2008201001726U
Authority: CN
Inventors: 邓永勤; 陈小明; 熊小敏
Original assignee: CHONGQING BOSAI MINERALS (GROUP) Co Ltd
Current assignee: CHONGQING BOSAI MINERALS (GROUP) Co Ltd
Priority date: 2008-09-28
Filing date: 2008-09-28
Publication date: 2009-07-29
Anticipated expiration: 2018-09-28

Abstract

The utility model discloses a single layer settling tank for aluminum oxide production. The single layer settling tank comprises a tank body, an overflow weir, a feed cylinder, a feed pipe, a flocculating agent feed pipe and an anchor impeller, wherein, the outlet of the feed pipe and the inner wall of the feed cylinder are in tangency. The tangency of the outlet of the feed pipe and the inner wall of the feed cylinder and the feeding impact along the tangent direction are utilized in the utility model to lead the material to rotate in the feed cylinder, so that the gravity and the inertial centrifugal force are combined, centrifugal separation is formed in the central cylinder body in the feed cylinder, and the effects of reducing resistance force, saving energy consumption and reinforcing settling are served. At the same time, the original once adding is changed into twice adding, a second flocculating agent feed pipe and the entering slurry are mixed in a reinforcement manner, so as to form primary flocculation; and the flocculating agent feed pipe adds flocculating agent at the outlet of the feed pipe, and further complete settling is conducted, so that the amount of the flocculating agent can be reduced, the total adding amount of the twice adding is about the 70% of that of the once adding, and the flocculating agent consumption is reduced.

Description

Alumina producing individual layer subsider

Technical field

The utility model relates to a kind of chemical industry equipment, particularly a kind of alumina producing individual layer subsider.

Background technology

Use two kinds of individual layer subsider and multitray settling tanks in the alumina producing, be divided into separator tank and rinse bath by purposes, the sintering process separating device spreads Bolkestein in Russia, Kazakhstan and adopts the cartridge type digester, does not have separator, the cartridge type filter that before China, adopts, press filtration separator etc.No matter be the home and abroad, separating device is all undesirable, the running cost height, and poor reliability, the separator tank production capacity on the employing conventional meaning is low, hydrolysising loss is big.

Summary of the invention

The purpose of this utility model is exactly at the deficiencies in the prior art, provides a kind of with gravity and centrifugal inertial force combination, utilizes the density variation of dispersed substance and dispersion medium, makes it to take place relative movement and the alumina producing of sepn process individual layer subsider.

For achieving the above object, the utility model adopts following technical scheme:

A kind of alumina producing individual layer subsider, comprise cell body, overflow weir, feeding cylinder, feed-pipe, flocculation agent feed-pipe, anchor stirrer, described overflow weir is connected the top of cell body, and cell body is provided with the cell body overflow port, and overflow port is communicated with the overflow groove that cell body top and overflow weir form; Described feeding cylinder is positioned at the center of cell body, is enclosed within the outside of the stir shaft of anchor stirrer, and the top of feeding cylinder is provided with the feeding cylinder overflow port; The bottom of described cell body is big cone, and the bottom of big cone is connected with big cone, and big the following of cone is discharge port, and there is manhole in society on cell body, it is characterized in that: the outlet of described feed-pipe and the inwall of feeding cylinder are tangent.

Present subsider is divided into individual layer subsider and multitray settling tank, because single room subsider has remarkable advantages than multilayer, and the development and application of high rate settling, be the another progress of sedimentation techniques, it is low that it has a underflow mud layer, and underflow contains characteristics such as height, good separating effect admittedly, admittedly contain greater than 400g/l as underflow, the overflow seston is less than 150mg/l, and what the utility model also adopted in design is the individual layer subsider, and concrete structure is seen accompanying drawing.

The sedimentation operation is the effect that relies on gravity, utilizes the density variation of dispersed substance and dispersion medium, makes it to take place relative movement and separating process.But the reactive force of realizing settling process is an also centrifugal inertial force of gravity.In the utility model owing to adopt the outlet of feed-pipe and the tangent mode of inwall of feeding cylinder, utilize the surging force of charging tangentially, make and produce rotation in the material feeding cylinder, gravity and centrifugal inertial force are combined, make it in the feeding cylinder central cylinder, to form centrifugation, reduce resistance and saved energy consumption, strengthened settled effect.

Preferably, described flocculation agent feed-pipe inserts in the feeding cylinder, and the outlet of flocculation agent feed-pipe is positioned at the exit of feed-pipe.Add flocculation agent in the feed-pipe exit at feed-pipe, better than the flocculating effect that adds flocculation agent above the former cause.

Preferably, also be provided with the second flocculation agent feed-pipe on feed-pipe, the second flocculation agent feed-pipe (5`) is communicated with feed-pipe.

Be divided into twice adding once adding originally, the second flocculation agent feed-pipe and the slip enhancing mixed of coming in produce preliminary flocculation; The flocculation agent feed-pipe adds in the feed-pipe exit, further sedimentation fully, adding can reduce the consumption of flocculation agent like this, the consumption of twice adding the chances are once adding about 70%, saved the consumption of flocculation agent.

Preferably, the tapering of described big cone is 110 °～120 °.Cone angle part in the bottom, tapering increases, and helps improving underflow L/S more.

The utility model alumina producing with the beneficial effect of individual layer subsider is, adopt the outlet of feed-pipe and the tangent mode of inwall of feeding cylinder, utilize the surging force of charging tangentially, make material in feeding cylinder, produce rotation, gravity and centrifugal inertial force are combined, make it in the feeding cylinder central cylinder, to form centrifugation, reduce resistance and saved energy consumption, strengthened settled effect, simultaneously, be divided into twice adding once adding originally, the second flocculation agent feed-pipe and the slip enhancing mixed of coming in produce preliminary flocculation; The flocculation agent feed-pipe adds flocculation agent in the feed-pipe exit, further sedimentation fully, adding can reduce the consumption of flocculation agent like this, the consumption of twice adding the chances are once adding about 70%, saved the consumption of flocculation agent.

Description of drawings

The 1st, structural representation of the present utility model;

Fig. 2 is the plan structure synoptic diagram of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described, as shown in Figure 1 and Figure 2:

A kind of alumina producing individual layer subsider, comprise cell body 1, overflow weir 2, feeding cylinder 3, feed-pipe 4, flocculation agent feed-pipe 5, anchor stirrer 6, described overflow weir 2 is connected the top of cell body 1, cell body 1 is provided with cell body overflow port 11, and overflow port 11 is communicated with the overflow groove that cell body 1 top and overflow weir 2 form; Described feeding cylinder 3 is positioned at the center of cell body 1, is enclosed within the outside of the stir shaft 61 of anchor stirrer 6, and the top of feeding cylinder 3 is provided with feeding cylinder overflow port 31; The bottom of described cell body 1 is big cone 12, and the bottom of big cone 12 is connected with big cone 13, and big the following of cone 13 is discharge port 14, and there is manhole 15 in society on cell body 1, it is characterized in that: the inwall of the outlet of described feed-pipe 4 and feeding cylinder 3 is tangent.

Described flocculation agent feed-pipe 5 inserts in the feeding cylinder 3, and the outlet of flocculation agent feed-pipe 5 is positioned at the exit of feed-pipe 4.

Also be provided with the second flocculation agent feed-pipe 5` on feed-pipe 4, the second flocculation agent feed-pipe 5` is communicated with feed-pipe 4.

The tapering of described big cone 12 is 110 °～120 °.

Claims

1, a kind of alumina producing individual layer subsider, comprise cell body (1), overflow weir (2), feeding cylinder (3), feed-pipe (4), flocculation agent feed-pipe (5), anchor stirrer (6), described overflow weir (2) is connected the top of cell body (1), cell body (1) is provided with cell body overflow port (11), and overflow port (11) is communicated with the overflow groove that cell body (1) top and overflow weir (2) form; Described feeding cylinder (3) is positioned at the center of cell body (1), is enclosed within the outside of the stir shaft (61) of anchor stirrer (6), and the top of feeding cylinder (3) is provided with feeding cylinder overflow port (31); The bottom of described cell body (1) is big cone (12), the bottom of big cone (12) is connected with big cone (13), big the following of cone (13) is discharge port (14), going up society at cell body (1) has manhole (15), and it is characterized in that: the inwall of the outlet of described feed-pipe (4) and feeding cylinder (3) is tangent.

2, alumina producing according to claim 1 individual layer subsider is characterized in that: described flocculation agent feed-pipe (5) inserts in the feeding cylinder (3), and the outlet of flocculation agent feed-pipe (5) is positioned at the exit of feed-pipe (4).

3, alumina producing according to claim 1 individual layer subsider is characterized in that: also be provided with the second flocculation agent feed-pipe (5`) on feed-pipe (4), the second flocculation agent feed-pipe (5`) is communicated with feed-pipe (4).

4, alumina producing according to claim 1 individual layer subsider is characterized in that: the tapering of described big cone (12) is 110 °～120 °.