Method for processing waste cell-lining of aluminum cell using coal slack

Abstract

The present invention provides a method for using coal gangue to dispose an aluminum reduction cell waste slot liner. The method comprises the steps as follows: after being crushed and milled, the coal gangue with the adding quantity of 10 percent to 30 percent of the quantity of the waste slot liner and quick lime with the adding quantity of 5 percent to 35 percent of the quantity of the waste slot liner are mixed with the waste slot liner uniformly; the material is calcined for 40-70 minutes at the temperature of 900-1200 DEG C; the calcined material is milled until the granularity is less than 0.074mm; residual soluble F<-> is leached by limewater with the concentration of 0.5 percent to 5 percent, the leaching time is 30-60 minutes; then the material is filtered; filtrate is used for other purpose; filter residue is recycled as usable material. The method achieves the comprehensive using purpose of treating a waste with another waste and changing waste into valuable. The method has the advantages of reliable technology and wide source and low price of raw material, is easy for industrial treatment and also completely and effectively uses the self thermal value of waste electrode and the thermal value of the coal gangue during the disposing process, thereby ensuring the disposing cost to be reduced and disposal effect to be good. The treatment filtrate is recycled and reused, and the filter residue is directly used as cement raw material or filling material for road construction.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This technology allows us to efficiently recycle different types of material during the production of anodes made up mainly by molybdenum (Mo) metal. By adding certain chemicals like silicon dioxide containing calcium oxides onto this mixture, it becomes more effective at reducing emissions compared with traditional methods such as burning off slags. Additionally, we found out how these chemistries were able to transform waste into valuable products - called sinterings – through processes similar to those described earlier. These technical results help reduce costs while improving efficiency in processing waste.

Problems solved by technology

This patented describes various techniques related to improving the disposability and recovery value of spent battery tissue containing metallurgical elements like iron, manganese, copper, zinc, chromite, calcium, ceramics, and rare earth stones. However, these processes involve different chemical compositions and concentrations depending upon factors like acid mist neutrality. These challengments require efficient and economically feasible solutions without generating excessive effluents during their cleanup operations.