Aluminum oxide crust block air-swept autogenous mill capable of recycling aluminum slag online

Abstract

The invention provides an aluminum oxide crust block air-swept autogenous mill capable of recycling aluminum slag online. A feeding end hollow shaft and a discharging end hollow shaft are arranged at the two ends of the autogenous mill correspondingly. The discharging end hollow shaft is provided with a discharging air duct. The discharging air duct is provided with an opening device with the air tightness. One side of the discharging air duct of the autogenous mill is provided with a recycling trolley which can move back and forth in the axial direction of the autogenous mill. The recycling trolley is provided with a material receiving rod corresponding to the opening device. A material receiving hopper is arranged at the end, adjacent to the discharging air duct, of the material receiving rod. By setting the length of the material receiving rod, the recycling trolley can drive the material receiving rod to enter the opened opening device, the material receiving hopper is made to stretch into the autogenous mill, and the aluminum slag in the rotating autogenous mill can fall into the material receiving hopper. According to the aluminum oxide crust block air-swept autogenous mill capable of recycling the aluminum slag online, the aluminum slag can be recycled online, the defect that long-time shutdown is caused due to manual recycling of the aluminum slag is overcome, and the efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electrolyte grinding in the electrolytic aluminum industry, in particular to an air-swept autogenous mill for aluminum oxide crusts that can recover aluminum slag on-line. Background technique [0002] In the electrolytic aluminum production process, electrolytic crusts containing aluminum slag are produced during the cleaning of the electrolytic cell and the butt anode. The electrolyte in the electrolytic crust containing aluminum slag needs to be ground and returned to the electrolytic cell for re-electrolysis. The slag needs to be separated and recycled. The existing technology generally adopts the self-grinding grinding method. During the grinding process, the electrolyte and aluminum slag are dissociated, the electrolyte is crushed and ground, and the products whose fineness meets the requirements are taken out of the self-mill by the circulating air flow in the self-mill for separation and recovery....

AI Technical Summary

Problems solved by technology

However, the dissociated aluminum slag cannot be ground and stays in the autogenous mill. It is necessary to manually enter the autogenous mill to pick up and recycle the aluminum slag on a regular basis. The aluminum slag picking and recycling work is labor-intensive, inefficient and poses a threat to the operator. personal safety issues

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