CN200943041Y

CN200943041Y - Flat-bottomed settling bath for aluminum oxide production

Info

Publication number: CN200943041Y
Application number: CN 200620009977
Authority: CN
Inventors: 张学信; 刘继军; 贾启; 谢锡增
Original assignee: 贾启
Priority date: 2006-09-14
Filing date: 2006-09-14
Publication date: 2007-09-05
Anticipated expiration: 2016-09-14

Abstract

The utility model is a flat-base sedimentation trough used for the alumina production and used for rinsing of the continuous sediment of the dissolved alumina slurry. The trough is mainly composed of a cylindrical trough and is characterized in that four discharging ports are arranged beneath of the side of the trough; the four discharging ports are divided into two groups that are distributed symmetrically. The agitator is arranged on the bottom of the trough and the end part is closely set against the inside wall of the trough, so as to agitate the red mud to the largest extent. The red mud will not conglomerate on the inner wall of the trough, thereby avoiding the operational obstacle incurred by the shedding of the red mud and avoiding the instant overload. The increase plurality of discharging ports effective improve the production efficiency so that the production capacity is improved by over 30%. Meanwhile, the symmetrically designed discharging ports optimize the force receiving status during the operation of the agitator and make the operation smooth.

Description

The flat subsider of alumina producing

Technical field

The utility model belongs to the alumina producing chemical industry equipment, particularly a kind of aluminum oxide stripping slurry continuous precipitation washing subsider.

Background technology

In alumina producing, need carry out washing of precipitate to the stripping slurry, thus the thick liquid of emersion aluminum oxide and discharge red mud.General employing is subsider now, mainly is made up of cell body, and agitator is installed in the cell body, and the cell body bottom design is taper, has discharge port at cone tip part, external underflow pump.In actual production, there is following problem: the one, only be provided with one group of discharge port, discharge port is few, and production capacity is low.The 2nd, distance is bigger between agitator scraper plate and the cell body inwall, be generally about 700mm, make slip easily scab in cell body inwall precipitation, the scar piece is hard and thicker, can cause agitator torque moment increase when falling, thereby damage reducer gear even burn out motor.

Summary of the invention

The flat subsider of large-scale alumina producing that provides a kind of production capacity high is provided the purpose of this utility model.

The utility model is achieved in that

The flat subsider of alumina producing mainly is made up of the cylinder shape cell body, and agitator is installed in the cell body, be evenly distributed with scraper plate on the moving tooth of agitator, it is characterized in that: be provided with four discharge ports below the cell body sidewall, four discharge ports are divided into two groups, are symmetrically distributed; The scraper plate of above-mentioned moving tooth end is close to the cell body inwall.

After the utility model adopts said structure, the plain base design, whipping appts is arranged on the bottom and is close to the cell body inwall, the intravital red mud of steel basin to greatest extent, slip can not form precipitation at the cell body inwall and scab, the interruption of service of having avoided red mud to come off and cause has been avoided the generation of moment overload phenomenon.A plurality of discharge ports of setting up have effectively improved production capacity efficient, and production capacity improves more than 30%, and the discharge port of symmetric design has been optimized the strained condition in the agitator operational process, operation smoothness, the generation of no latch up phenomenon.Has effect simple in structure, easy to use, that production capacity is big, efficient is high.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model, and Fig. 2 is the sectional view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

In the accompanying drawing, 1 is that cell body, 2 is that agitator, 3 is that discharge port, 4 is scraper plate.

As shown in Figure 1, the utility model is that subsider is used in the slurry sediment washing in the alumina producing, mainly is made up of cell body 1, and cell body 1 is designed to flat cylindrical, and diameter is 40m, the high 8m of being, vertical setting.Be provided with four discharge ports 3 below cell body 1 sidewall, external underflow pump is used for the discharge of red mud.Discharge port 3 is divided into two groups, is symmetrical arranged on cell body 1; Every group two, one of them is used for discharging, another is standby.As shown in Figure 2, be provided with an agitator 2 in the cell body 1, agitator 2 is provided with two moving teeth.Be evenly distributed with a plurality of scraper plates 4 on the moving tooth, be used for slip in the cell body 1 stirring, scrape attached.The position of agitator 2 is corresponding with above-mentioned discharge port 3, and the scraper plate 4 of its end is close to cell body 1 inwall, and the two spacing≤100mm stirs slip to greatest extent, prevent slip precipitation, scab.

In the discharging of two sides of cell body 1 symmetry, changed the strained condition in agitator 2 operational processs during use, reduced agitator 2 operating resistances, avoided the underflow pump owing to contain the latch up phenomenon that increases, viscosity increase cause admittedly.

Claims

1, the flat subsider of alumina producing, mainly form by cylinder shape cell body (1), agitator (2) is installed in the cell body (1), be evenly distributed with scraper plate (4) on the moving tooth of agitator (2), it is characterized in that: the below at cell body (1) sidewall is provided with four discharge ports (3), four discharge ports (3) are divided into two groups, are symmetrically distributed; The scraper plate (4) of above-mentioned moving tooth end is close to cell body (1) inwall.

2, flat subsider according to claim 1 is characterized in that: the distance≤100mm between the scraper plate (4) of above-mentioned moving tooth end and cell body (1) inwall.