CN2464743Y

CN2464743Y - Pre-baking anode steel pawl protection ring

Info

Publication number: CN2464743Y
Application number: CN 01214272
Authority: CN
Inventors: 董仕毅
Original assignee: Yunnan Aluminium Co Ltd
Current assignee: Yunnan Aluminium Co Ltd
Priority date: 2001-02-22
Filing date: 2001-02-22
Publication date: 2001-12-12
Anticipated expiration: 2011-02-22

Abstract

The utility model relates to a pre-baking anode steel pawl protection ring, which is characterized in that the inner diameter of the lower end of the protection ring is enlarged, and an iron wire groove is additionally arranged on the external surface of the protection ring. Because the inner diameter of the lower end of the protection ring of the utility model is enlarged, when phosphorus iron melt rises above the plane of a carbon block, the protection ring can be attached to the plane of the carbon block tightly, and thus, protection effect is enhanced; the iron wire groove is additionally arranged on the external surface of the protection ring, which is favorable for the positioning of bound iron wires and ensures that the protection ring is not broken off in the process of electroanalysis. The utility model is made of high-temperature ceramic materials, and the utility model has the advantages of corrosion resistance, simple manufacture technology, no need of roasting, high strength and convenient transportation; in the process of the electroanalysis, the physical property of the protection ring is not changed; after an anode is changed, the protection ring can be taken from a remnant anode easily; after the protection ring is cleared cleanlily, the protection ring can be used repeatedly, so production cost is reduced.

Description

The pre-baked anode steel claw protection ring

The utility model relates to the pre-baked anode steel claw protection ring in the aluminium cell production.

In large-scale pre-baked aluminum electrolysis cell was produced, prebaked anode consumption accounted for about 10% of production cost, reduced anode consumption; to reduce production costs; always being subjected to the great attention of electrolytic aluminium factory, using anode steel claw protection ring, is a new technology that reduces anode consumption that occurs in recent years.This technology has following characteristics: 1, prolong anode change cycle 1-2 days; 2, prolong steel pawl work-ing life; 3, avoid the steel pawl by electrolyte melting, influence aluminium liquid quality, 4, the annoyance level when reducing change poles electrolyzer steadily produced.

The conventional steel claw protection ring adopts carbon materials to make, and in electrolytic process, along with the consumption of prebaked anode, guard ring is also gradually by electrolyte consumption, and its structure as shown in Figure 1.Traditional steel claw protection ring is an expendable consumed product, can not reuse.Its complex manufacturing technology needs high-temperature roasting after the moulding, easily broken in transportation, loss is bigger.The steel pawl is cast in the carbon bowl behind the molten iron, if the ferrophosphorus water surface is higher than carbon piece plane, can not combine closely in guard ring lower surface and carbon piece plane, and in electrolytic process, ionogen infiltrate gap contacts with the steel pawl, directly corrodes the steel pawl, does not have the effect of protecting the steel pawl.And guard ring easily comes off in electrolytic process.

The purpose of this utility model provides a kind of can avoid ferrophosphorus water to be higher than carbon piece plane the time, the shortcoming that the guard ring lower end can not fit tightly with carbon piece plane, and difficult drop-off, manufacture craft is simple, the pre-baked anode steel claw protection ring that intensity is high.

The utility model is achieved in that the structure of this pre-baked anode steel claw protection ring is to increase at the guard ring bottom diameter, and the guard ring outside surface increases the iron wire groove one.Adopt high temperature ceramic material, corrosion-resistant.

Guard ring of the present utility model is because bottom diameter increases, and when ferrophosphorus water was higher than carbon piece plane, guard ring can fit tightly with carbon piece plane, has strengthened the protection effect; Increase the iron wire groove one at the guard ring outside surface, be beneficial to bundle the iron wire location, guarantee that guard ring does not come off in the electrolytic process.Adopt high temperature ceramic material, corrosion-resistant, manufacture craft is simple, does not need roasting, and the intensity height is convenient to transportation.Its physical properties does not change in electrolytic process, and behind the change poles, guard ring can take off from anode scrap easily, cleans out, and is reusable.Greatly reduce production cost.

Fig. 1 is a guard ring structural representation of the prior art;

Fig. 2, Fig. 3 are guard ring front view of the present utility model and vertical view;

Fig. 4 is guard ring user mode figure of the present utility model.

Among the figure, the 1-guard ring, 2-iron wire groove, 3-increases internal diameter, 4-prebaked anode, 5-ferrophosphorus water, 6-steel pawl, 7-aluminium guide bar.

As shown in the figure, the utility model is to increase (3 positions among the figure) at guard ring 1 bottom diameter, and the guard ring outside surface increases iron wire groove 2 one.Guard ring adopts refractory ceramics as material, and manufacture craft is simple, does not need roasting, the intensity height, and its physicochemical property do not change in electrolytic process.Behind the change poles, guard ring can take off from anode scrap easily, cleans out, and is reusable.

Claims

1, a kind of pre-baked anode steel claw protection ring is characterized in that the guard ring bottom diameter increases, and the guard ring outside surface increases the iron wire groove one.