CN205295496U

CN205295496U - Aluminium electroloysis positive pole covering device

Info

Publication number: CN205295496U
Application number: CN201521063710.5U
Authority: CN
Inventors: 张春生; 杨大锦; 杨万章; 陈加希; 陈本松; 刘俊场; 牟兴兵; 付维琴; 欧根能; 陈华君
Original assignee: Kunming Metallurgical Research Institute; Yunnan Yunlv Ruixin Aluminum Co Ltd
Current assignee: Kunming Metallurgical Research Institute; Yunnan Yunlv Ruixin Aluminum Co Ltd
Priority date: 2015-12-18
Filing date: 2015-12-18
Publication date: 2016-06-08
Anticipated expiration: 2025-12-18

Abstract

The utility model provides an asymmetric lid edge that aluminium electroloysis positive pole covering device, the device adopt the aluminium ash to clean the shaping of sediment single pressing, and the device of press forming is the trapezoidal lid structure of bellied rectangular form for the bottom surface makes progress, prolongs length direction at the lid end (1) and is provided with at least two semi -circular through -hole (2) that can be used to place anode steel claw, is the length difference along length direction's both ends lid along (3a, 3b). The utility model provides a complicated, the big scheduling problem of workman intensity of labour of aluminium electroloysis positive pole overlapping operation among the prior art, realized the recycle of discarded object aluminium ash simultaneously.

Description

A kind of aluminium electrolysis anode cladding system

Technical field

This utility model relates to aluminium electrolysis anode technical field, is specially a kind of alternative existing aluminium electrolysis anode utilizing waste aluminium ash to prepare and covers the device of material.

Background technology

In existing aluminum electrolysis process, the anodic cycle of electrolysis bath is generally about 30 days, anode life cycle needs to carry out anode change, in order to ensure aluminum electrolysis cell upper part temperature and avoid anode and air contact generation oxidation reaction, generally all adds one layer of mulch on anode. Mulch addition manner of the prior art is that the electrolysis bath face-piece block broken material utilizing 2��5cm is laid on anode surface uniformly densely, thickness is 12��20cm, then sand-like aluminium oxide is added on electrolysis bath face-piece block broken material surface, sand-like aluminium oxide flow to according to self good mobility in electrolyte and aluminium oxide caking gap, thus forming one layer of density and the good mulch of heat insulating ability. Existing mulch add and safeguard and adjust operation labor intensity bigger, operating environment is poor, generally require electrolysis work young in a large number to carry out, and these operators just cannot adhere to after being generally engaged in about 40 years old carrying out these strong muscle power operations, it is necessary to the problem changing post. Though additionally existing insulation material because of electrolyte and alumina bound poor-performing, through caking molding but fall in electrolysis bath by easy slump, electrolysis bath thermal balance and material balance can be had a strong impact on, reduce the steady Effec-tive Function of aluminum electrolysis, reduce aluminium electroloysis economic and technical norms.

Producing at aluminium electroloysis remelted aluminum ingot or in aluminium alloy smelting process, can produce substantial amounts of scum silica frost, these scum silica frost float over above aluminum liquid, also referred to as aluminum ash. Electrolytic aluminium is cast by national environmental protection portions in 2008 and the Committee of Development and Reform, alloy refining is processed and in aluminium section bar secondary smelting process, " National Hazard refuse register " is listed in the slag of generation, scum silica frost, inflammability skimming in. Along with China's electrolytic aluminium, aluminum processing, the growing with each passing day of secondary aluminium yield, also will produce substantial amounts of aluminum grey (about 15,000,000 tons) every year, in aluminum ash except containing aluminum, also containing Al₂O₃, fluoride salt, the material such as AlN, if do not dealt carefully with, not only waste resource, also environment can be caused severe contamination.

Summary of the invention

The purpose of this utility model is by the disposal that existing waste aluminium is grey and is applied in aluminium electroloysis as aluminium electrolysis anode covering, solve the problems such as aluminium electrolysis anode overlapping operation in prior art is complicated, labor strength is big, simultaneously for realizing the recycling of wasted aluminium ash, it is provided that the electrolytic anode cladding system of a kind of alternative aluminium electrolysis anode mulch.

The purpose of this utility model is achieved through the following technical solutions:

A kind of aluminium electrolysis anode cladding system, it is once compressing that this device adopts aluminum ash to clean slag, compressing device is the trapezoidal lid structure of strip that the protruding bottom surface of bottom up raises up, elongatedness direction at the bottom of lid being provided with at least two and can be used for placing the semi-circular through hole of anode steel claw, two end cap along its length is along the asymmetric cover rim different for length.

This utility model is generally suppressed along anode cladding system length and is formed with four semi-circular through hole. It is that aluminium electroloysis remelted aluminum ingot produces or the clean slag of the aluminum ash of generation in aluminium alloy smelting process that described aluminum ash cleans slag.

This utility model has following advantages and beneficial effect:

(1) this utility model provides the substituted device of aluminium electrolysis anode mulch, and the aluminum ash making full use of danger wastes discarded prepares into aluminium electrolysis anode cladding system, it is achieved that the harmless treatment of aluminum ash is recycled with resource.

(2) this utility model thoroughly solves the problems such as traditional electrolyte groove utilizes aluminium oxide, face-piece block and electrolyte block to there is poor thermal insulation property as the insulation material of mulch, is easily falling into electrolysis bath, labor strength is big, decrease the operation sequence that aluminium electroloysis is loaded down with trivial details, reduce aluminum electrolysis operator and labor intensity thereof.

(3) this utility model is adopted, it is possible to solving large-scale pre-baked aluminum electrolysis cell and only therefrom stitch blanking, aluminium oxide can not dissolve rapidly the problem that diffusion ensures the steady Effec-tive Function of electrolysis production. When reducing change poles and add mulch, the electrolysis bath impact on electrolysis bath thermal balance Yu material balance fallen into by material.

(4) cladding system is adopted to replace mulch, it is possible to quickly to improve anode upper temp, accelerate the anode conducting time.

(5) this utility model device degree of compaction is high, high insulating effect, can effectively reduce anode steel claw and cover plate contact height with insulation, reduces anode steel claw oxidation probability, can effectively extend anode steel claw service life, and improve aluminum liquid quality.

(6) utilize this utility model to cover plate and substitute conventional vacuum material addition manner, can effectively reduce flying upward of the powders such as aluminium oxide, thus reducing ton aluminum material consumption and improving environmental benefit.

(7) this utility model revolutionizes conventional aluminum electrolysis bath insulation material addition manner, for realizing mechanized operation, reduces labor intensity and has established solid foundation.

Accompanying drawing explanation

Fig. 1 is the front view that one piece of cladding system of this utility model covers on aluminium electrolysis anode;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the left view of Fig. 1.

Detailed description of the invention

The utility model is described in further detail by the examples below.

Aluminium electrolysis anode cladding system as shown in Figure 1, Figure 2, Figure 3 shows, this device adopts aluminum ash to clean the slag once compressing monolithic construction obtained, compressing device is the trapezoidal lid structure of strip that bottom surface raises up, 1 elongatedness direction at the bottom of lid being provided with at least two and can be used for placing the semi-circular through hole 2 of anode steel claw 4, the present embodiment has four semi-circular through hole. This utility model two end cap along its length is along the asymmetric cover rim that 3a, 3b are that length is different, as it can be seen, the length that the length of the right cover rim 3a is less than left side cover rim 3b.Material used by this utility model is that aluminium electroloysis remelted aluminum ingot produces or the clean slag of the aluminum ash of generation in aluminium alloy smelting process, and this clean slag can adopt the clean slag of prior art.

This utility model using method in actual production, it is put into together in electrolysis bath after two pieces of anode cladding systems that compacting obtains are symmetrically disposed at one piece of anode carbon block 5 upper surface, replace the mulch with prior art to use, figure only depicts one piece of cladding system, covers the half at anode. The specification of anode cladding system is suitable with the upper surface size of anode. Afterwards, the aluminium electrolysis anode covering cladding system is put in electrolysis bath one by one, the gap formed between the anode and the anode that occur in placement process, between anode steel claw 5 and anode cladding system adopts aluminum ash to clean slag envelope coating and seals, the space that middle seam and stove side are formed is relatively big, cleans slag with electrolysis bath mulch face-piece block and aluminum ash and is filled with a sealing. Aluminium oxide is filled up to lump with electrolyte and aluminium oxide and is filled up all employing prior art means. Anode reaches cycle of operation when again changing anode, again can recycle after anode cladding system is proposed cleaning.

Claims

1. an aluminium electrolysis anode cladding system, it is characterized in that, it is once compressing that this device adopts aluminum ash to clean slag, compressing device is the trapezoidal lid structure of strip that bottom surface raises up, (1) elongatedness direction at the bottom of lid being provided with at least two and can be used for placing the semi-circular through hole (2) of anode steel claw, two end cap along its length is the different asymmetric cover rim of length along (3a, 3b).

2. a kind of aluminium electrolysis anode cladding system according to claim 1, it is characterised in that be formed with four semi-circular through hole (2) along the compacting of anode cladding system length.

3. a kind of aluminium electrolysis anode cladding system according to claim 1 and 2, it is characterised in that it is that aluminium electroloysis remelted aluminum ingot produces or the clean slag of the aluminum ash of generation in aluminium alloy smelting process that described aluminum ash cleans slag.