CN2416112Y - Pre-roasting anode aluminium electrolytic bath roaster - Google Patents

Abstract

The utility model relates to a preroasting anode aluminium electrolytic bath roasting device, which is composed of an anode transverse bus bar, an anode conductive rod, an anode transverse bus bar clamp, a soft bus bar, an anode conductive rod clamp, a carbon anode, a carbon cathode and a cathode steel bar. The utility model is characterized in that the soft bus bar is connected between the anode conductive rod and the anode transverse bus bar, solid aluminium with good conductive performance is arranged between the carbon anode and the carbon cathode, an aluminium pig can be used as the solid aluminium, and an aluminium plate or aluminium chips can also be used as the solid aluminium. The device provided by the utility model has the advantage of simple structure; roasting temperature is correspondingly uniform and can be raised slow.

Description

A kind of prebaked cell for aluminum-reduction calciner

The utility model belongs to a kind of nonferrous smelting equipment, particularly prebaked cell for aluminum-reduction calciner.

The roasting of electrolytic aluminium factory electrolyzer is crucial to electrolysis production.The quality of calcination quality directly has influence on the quality of Aluminium Electrolysis, the current efficiency of electrolyzer and the life-span of electrolyzer.The roasting method of existing electrolyzer has three kinds: molten aluminum roasting, powdered carbon or Graphite Powder 99 roasting and flame add thermal bake-out, and three kinds of roasting method all are equipped with corresponding calciner.These several roasting method respectively have relative merits.The advantage of powdered carbon roasting is to heat up lentamente, and shortcoming is to be not easy to realize that maturing temperature is even.The 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, and maturing temperature is even relatively, and 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, and the gas in the groove liner expands rapidly, thereby the groove liner is damaged.Molten aluminum roasting is by between carbon anode and charcoal negative electrode, pours into aluminium liquid, is feeding under the situation of serial electrolytic cell currents, and the joule heating that utilizes the resistance of two electrodes and aluminium water to produce is realized.Flame adds the advantage that thermal bake-out has slow intensification and uniformity of temperature profile, and 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, and 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.

The purpose of this utility model is a kind of novel electrolysis of aluminum calciner of development, and this apparatus structure is simple, and maturing temperature relatively evenly also can heat up slowly.

The utility model is one and utilizes the pot line total current and device that the electrolyzer self-resistance carries out roasting.This device has been used the part-structure of electrolyzer, connects soft bus between conductive anode rod and the horizontal bus of anode, inserts between carbon anode by electrolyzer after newly-built or the overhaul and the charcoal negative electrode that the good solid aluminium of conduction realizes.

The utility model is described in further detail below in conjunction with drawings and Examples.

Figure is the calciner structural representation.

As shown in FIG., the horizontal bus 1 of anode, conductive anode rod 2, the horizontal Bus line cramp 3 of anode, soft bus 4, conductive anode rod anchor clamps 5, carbon anode 6, solid aluminium 7, charcoal negative electrode 8 and cathode steel bar 9, electrolytic bath side part inner lining 10, ramming paste 11, bottom land refractory brick and insulating brick 12.

Electric current enters from the horizontal bus 1 of anode during roasting, by soft bus 4, conductive anode rod 2, carbon anode 6, solid aluminium 7, charcoal negative electrode 8, derives from cathode steel bar 9 at last.Utilize the resistance of negative electrode solid aluminium (the fusing later stage becomes aluminium liquid) and negative electrode, make electrolyzer add thermal bake-out, solid aluminium can be aluminium ingot, aluminium sheet or aluminium bits.After roasting finishes, only need to remove soft bus 4 and anchor clamps 3,5.Among the figure, electrolytic bath side part inner lining 10, ramming paste 11, bottom land refractory brick and insulating brick 12, they do not constitute the integral part of this device.

Claims (1)

1, a kind of prebaked cell for aluminum-reduction calciner, form by the horizontal bus of anode, conductive anode rod, the horizontal Bus line cramp of anode, carbon anode, charcoal negative electrode and cathode steel bar, it is characterized in that this device also comprises soft bus, conductive anode rod anchor clamps, between conductive anode rod and the horizontal bus of anode, connect soft bus, between carbon anode and charcoal negative electrode, insert the good solid aluminium of conduction, solid aluminium can be aluminium ingot, also can be aluminium sheet or aluminium bits.

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