CN2641061Y - Solid aluminum calcining appts. for aluminum electrolyzer - Google Patents

Abstract

The utility model discloses a roasting device of the aluminum electrolytic tank solid aluminum, which pertains to a smelting device of coloured metal. The device consists of an anode horizontal busbar, an anode conducting rod, an electrical conductor between the anode horizontal busbar and the anode conducting rod, carbon anodes and carbon cathodes. The utility model is characterized in that solid aluminums with good conductivity are arranged between the carbon anode and the carbon cathode; the solid aluminums are aluminum pigs, or can be aluminum plates or aluminum skimming. The cathodes on two ends of bottom of each anode are provided with firebricks or carbonaceous blocks(when the bottom palm of the anode and the surface of the cathode are not very flat); aluminum skimming is filled between the anodes, between the aluminum pigs or the aluminum plates, and between the anode and the solid aluminum and the peripheral solid electrolyte blocks. The utility model has the advantages that the device supplied has simple structure, even roasting temperature without overheating, and safe and reliable operation.

Description

A kind of aluminium cell solid aluminium calciner

Technical field

The utility model belongs to a kind of non-ferrous metal metallurgy equipment, particularly prebaked cell for aluminum-reduction calciner.

Background technology

The calciner of electrolytic aluminium factory electrolyzer, to electrolysis production is crucial, the quality of calcination quality directly has influence on the quality of Aluminium Electrolysis, have influence on the current efficiency of electrolyzer and the life-span of electrolyzer simultaneously, the calciner of existing electrolyzer has three kinds of structure formations: molten aluminum roasting, powdered carbon or Graphite Powder 99 roasting and flame add thermal bake-out device and corresponding roasting method, these several calciners and method respectively have relative merits, wherein the advantage of powdered carbon roasting is to heat up lentamente, shortcoming is to be not easy to realize that maturing temperature is even, and the structure of powdered carbon roasting is by utilizing the resistance heating between electrode and the electrode to realize roasting under the strength of current at serial electrolyzer at electrolyzer carbon anode and charcoal negative electrode filling powdered carbon (comprising Graphite Powder 99); The advantage of molten aluminum roasting is simple, maturing temperature is even relatively, shortcoming is that high temperature aluminum water is poured into and can be made the groove inner lining material be subjected to bigger thermal shocking in the normal temperature electrolyzer, gas in the groove liner expands rapidly, thereby the groove liner is damaged, and the molten aluminum roasting device is by between carbon anode and charcoal negative electrode, pours into aluminium liquid, feeding under the situation of serial electrolytic cell currents, the joule heating that utilizes the resistance of two electrodes and aluminium water to produce is realized; Flame adds the advantage that the thermal bake-out experience has slow intensification and uniformity of temperature profile, shortcoming is the equipment complexity, troublesome poeration, to environment have pollute and carbonaceous groove liner oxidized easily, the fuel that flame roasting uses has coal gas, Sweet natural gas or heavy oil, it uses special-purpose combustion oil, and the flame that above-mentioned fuel combustion produces directly sprays into the groove thorax, makes groove liner burning heating.

Goal of the invention

For solving the deficiency of above aluminium cell solid aluminium calciner, the purpose of this utility model provides a kind of aluminium cell solid aluminium calciner, utilize the pot line total current and principle that the electrolyzer self-resistance carries out roasting, reliable to realize this device operational safety, the purpose that the life-span is long.

Structure design of the present utility model is achieved in that the structure of this calciner is that many group leaders square carbon anode is housed in this device, on each (group) anode, vertical anode rod is housed respectively, positive bar is connected with guide rod by wire, be added with insulation spacer between positive bar and the wire, below carbon anode, be placed with solid aluminium, be placed with refractory brick cushion block or carbonaceous charcoal piece below anode two, around the carbon anode is solid electrolyte, ionogen contacts with following charcoal negative electrode, between the carbon anode and with the solid electrolyte of both sides between be added with aluminium and consider to be worth doing, whole device is become one, is vertical structure.

This device has been used the part-structure of electrolyzer, between conductive anode rod and the horizontal bus of anode, connect soft bus, insert the good solid aluminium of conduction between carbon anode by electrolyzer after newly-built or the overhaul and the charcoal negative electrode and between anode and anode, between the solid aluminium ingot (plate), the aluminium bits of filling between anode and aluminium ingot (plate) and the groove periphery solid electrolyte are realized.

The utility model has following advantage compared with the prior art: simple in structure, operational safety is reliable, maturing temperature is even, no overheated, life-span is long, it is easy to maintenance to use.

Description of drawings

Fig. 1 is an aluminium cell solid aluminium calciner structure principle chart.

1 insulation spacer, 2 positive bar, 3 wires, 4 aluminium are considered 5 solid electrolytes, 6 carbon anodes, 7 solid aluminium, 8 cushion blocks, 9 anode rods, 10 charcoal negative electrodes to be worth doing among the figure

Embodiment

The detailed structure and the principle of work of this device are illustrated in conjunction with the accompanying drawings.

During roasting, electric current enters from positive bar 2, by wire 3, anode rod 9, carbon anode 6, solid aluminium 7, charcoal negative electrode 10 is derived, and utilizes the resistance of solid aluminium (becoming aluminium liquid after the fusing) and charcoal negative electrode, makes the electrolyzer after newly-built or the overhaul add thermal bake-out, solid aluminium can be aluminium ingot, aluminium sheet or aluminium bits are treated the fusing of solid aluminium and aluminium bits, and after reaching certain aluminium level, remove insulation spacer 1 and wire 3, anode is seated on the refractory brick cushion block or carbonaceous charcoal piece 7 below the anode, then anode rod 9 is fixed on the horizontal bus of anode, and make liquid aluminium between carbon anode and the charcoal negative electrode under certain height, the continuation energising adds thermal bake-out arrives till the given temperature, finishes aluminium cell solid aluminium roasting process.

Claims (2)

1, a kind of aluminium cell solid aluminium calciner, form by electrolyzer and electrode, the structure that it is characterized in that this calciner is that many group leaders square carbon anode (6) is housed in this device, vertical anode rod (9) is housed respectively on each anode (6), positive bar (2) is housed on the guide rod (9), positive bar (2) is connected with guide rod (9) by wire (3), be added with insulation spacer (1) between positive bar (2) and the anode rod (9), below carbon anode (6), be placed with solid aluminium (7), both sides below it are placed with refractory brick cushion block or carbonaceous charcoal piece (8), carbon anode (6) periphery is solid electrolyte (5), ionogen (5) contacts with following charcoal negative electrode (10), between the carbon anode (6) and between the solid aluminium (7) and and solid electrolyte on every side (5) between be added with aluminium bits (4), whole device is become one, is vertical structure.

2,, it is characterized in that solid aluminium can be aluminium ingot, aluminium sheet and aluminium bits by the described calciner of claim 1.