CN2623703Y

CN2623703Y - Anode carbon block with gain groove

Info

Publication number: CN2623703Y
Application number: CN 03213605
Authority: CN
Inventors: 杨晓东; 佘海波; 朱丹青
Original assignee: Shenyang Aluminum and Magnesium Engineering and Research Institute Co Ltd
Current assignee: Shenyang Aluminum and Magnesium Engineering and Research Institute Co Ltd
Priority date: 2003-06-13
Filing date: 2003-06-13
Publication date: 2004-07-07
Anticipated expiration: 2013-06-13

Abstract

The utility model discloses an anode carbon block with gain groove used in anode set of large aluminum hydroelectric bath. Lengthening and widening of anode carbon block (1) in size are adverse to the discharge of CO 2 generated from electrochemical reaction at the bottom of the anode carbon block. Therefore, in order to quickening up the discharge of CO 2, the utility model is provided with one or more oblique gain grooves (2) or level gain grooves (2) along the length direction of the anode carbon block (1), wherein, the opening of the gain groove (2) is arranged at the bottom of the anode carbon block (1); when the oblique gain groove (2) is adopted, the deep end of the oblique gain groove (2) is a with the numeric area being less than two thirds of the height of the anode carbon block (1), while the shallow end is b with the numeric area being a little less than that of a; when the level gain groove (2) is adopted, the depth of the level gain groove (2) needs to be less than two thirds of the height of the anode carbon block (1); in addition, the breadth c of the gain groove (2) ranges from 6 mm to 15 mm.

Description

The anode block that has groove

Affiliated technical field

The utility model relates to a kind of aluminium cell anode carbon block.

Background technology

In the Aluminium Electrolysis process, galvanic current is by the ionogen under the molten state, Al in the ionogen ₂O ₃With the C of carbon anode electrochemical reaction taking place, produces liquid aluminium and CO ₂Gas.CO ₂Gas produces on the basal surface of anode block, if discharge rate is slow, more CO certainly will be arranged ₂Bubble is attached to anode surface, and the volts lost that this will strengthen on the anode causes waste of energy, simultaneously can efficiently carrying out because of the isolation effect electrochemical reaction of bubble.

The anode block of prior art, its bottom is a complete rectangle plane, is unfavorable for attached to the CO on the anode bottom surface ₂The discharge of bubble.Especially during the physical dimension broad of anode block, more be unfavorable for CO ₂The discharge of bubble.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of anode block that has groove is provided, makes the CO that produces on the anode block ₂Gas is discharged quickly, reduces the volts lost on the anode block, reduces electric energy loss.

In order to solve the problems of the technologies described above, the utility model is achieved in that on anode block, length direction along the carbon piece, open one or more grooves, the mouth of groove is in the bottom of anode block, and the bottom of trench of groove is oblique, promptly an end is dark, one end is shallow, when on electrolyzer the anode group being installed, make longitudinal cenlerline one side of the dark end of groove near electrolyzer.The purpose of doing like this is to help CO ₂Gas overflows easily along the valley gutter direction, and makes the gas major part guide the centre of groove into, accelerates Al there ₂O ₃Fusing and diffusion, also can help simultaneously the gas collection of electrolysis flue gas.The bottom of trench of groove can not be oblique also, is flat.

The beneficial effects of the utility model are: the utility model can make the CO that produces on the anode block ₂Gas is discharged quickly, has reduced the volts lost on the anode block, has reduced electric energy loss.

Because the gas in the groove is the position discharging near the groove longitudinal cenlerline, for the electrolyzer of middle point feeding, this portion gas can play stirring action, makes Al ₂O ₃In ionogen, fuse soon and more even.

Description of drawings

Fig. 1 has groove anode block schematic perspective view.

Fig. 2 has groove anode block schematic side view.

Fig. 3 has the scheme of installation of groove anode block on electrolyzer.

Embodiment

In anode block vibratory compaction operation, have one or more steel plates that are used to form carbon piece groove in the female mold, after the vibratory compaction, vibrating forming machine has a stripper apparatus, to have chute 2 or the shaking platform of the anode block of the ditch 2 of rising as high as the banks 1 release vibrating forming machine, and send calcining process to carry out roasting green anode carbon piece 1 again, salable product send the anode assembling procedure, anode rod and anode block 1 formed anode assemblies, send potroom and is installed on the electrolyzer.

One or more grooves 2 are arranged on each anode block 1, and the quantity of groove 2 is by the size decision of anode block 1, and the anode of small dimension size can be opened a groove 2, and the anode of big specification can be opened two or more groove 2.When adopting chute 2, the end that groove 2 is dark, its degree of depth is a, the span of a should be less than 2/3 of anode block 1 height; The end that groove 2 is shallow, its degree of depth is b, the b value is slightly smaller than a value.When adopting horizontal channel 2, the degree of depth of groove 2 should be less than 2/3 of anode block 1 height.Groove 2 width are c, and the span of c is 6～15mm, and the root of groove 2 is straight.The position of groove 2: look from the end of anode block 1, the distribution of groove is that when only opening a groove 2, groove 2 occupy on the medullary ray along its length of carbon piece uniformly.

The installation of anode group on electrolyzer if having the anode block 1 of chute, make groove 2 dark sides be in the position of close electrolyzer longitudinal cenlerline.Make gas in the groove 2, near the position discharging electrolyzer longitudinal cenlerline.

Claims

1. have the anode carbon block of groove, it is characterized in that: at anode carbon block (1) along its length, be provided with one or more grooves (2), the opening of groove (2) is located at the bottom of anode carbon block (1).

2. the anode carbon block that has groove according to claim 1, it is characterized in that: the bottom of trench of groove (2) can be oblique, promptly an end is dark, the other end is shallow, the value of a dark end a should be less than 2/3 of anode carbon block (1) height, the value of a shallow end b should be slightly less than a value, and the span of the width c of groove (2) is 6～15mm.

3. the anode carbon block that has groove according to claim 1 is characterized in that: the bottom of trench of groove (2) also can be flat, and the degree of depth of groove (2) should be less than 2/3 of anode carbon block (1) height, and the span of the width c of groove (2) is 6～15mm.

4. the anode carbon block that has groove according to claim 1 is characterized in that: the quantity of the groove (2) on the every anode carbon block (1), decide according to the size of anode carbon block (1) specification.

5. the anode carbon block that has groove according to claim 1 is characterized in that: is being assembled into when on electrolyzer, installing after the anode group, if chute (2), the dark end of groove (2) is in the position near the electrolyzer medullary ray.