Pressure pouring device for phosphoric pig iron for assembling prebaked anode and pouring method of pressure pouring device

Abstract

The invention provides a pressure pouring device for phosphoric pig iron for assembling a prebaked anode. An opening of a carbon bowl is closed through a pouring mold so that the carbon bowl can be inthe closed state; and the liquid phosphoric pig iron is pressure-poured into the portion, between the prebaked anode and a steel claw, of the carbon bowl through a pressure jet punch so that the mold-filling capacity of the liquid phosphoric pig iron can be improved, close connection between the prebaked anode and the steel claw can be achieved, the tension resistance can be improved, and connection pressure reduction can be lowered. The invention further provides a pouring method of the pressure pouring device for the phosphoric pig iron for assembling the prebaked anode.

Description

technical field [0001] The invention relates to the technical field of prebaked anode manufacturing, in particular to a phosphorus pig iron pressure casting device for prebaked anode assembly and a casting method thereof. Background technique [0002] In the production of electrolytic aluminum, the prebaked anode is called "the heart of aluminum electrolysis", and its production and assembly is an important link in the production of aluminum electrolysis. The quality of the prebaked anode directly affects the production safety and energy consumption of metal aluminum in the electrolytic production process. [0003] The current prebaked anode assembly uses phosphorus pig iron as the bonding material between the anode and the steel claw. In the prebaked anode assembly process, the assembly of the anode steel claw and the anode carbon block is one of the key processes that affect the quality of the anode assembly, which directly affects the quality of the anode. Key production...

AI Technical Summary

Problems solved by technology

However, in the current pouring process, due to the use of ladle pouring, many factors affect the natural flow of liquid phosphorus pig iron during the pouring process, resulting in insufficient mold filling capacity, prone to defects such as insufficient pouring, cold shut, etc., so that the prebaked anode—phosphorus pig iron— The poor contact between the steel claws increases the connection pressure drop, which in turn affects the energy consumption in the aluminum electrolysis process

In the prior art, the high-temperature fluidity of liquid phosphorus is generally improved by modifying liquid phosphorus pig iron. However, the modification process of liquid phosphorus pig iron is relatively complicated and the cost is high. In addition, the elements added in the modification process or liquid phosphorus pig iron Although the change of composition can improve the high-temperature fluidity of liquid phosphorus, it may lead to the decline of other properties of liquid phosphorus, such as electrical conductivity and strength, and reduce the use effect of prebaked anodes

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