Comprehensive treatment method for recycling carbon from waste lithium iron phosphate battery

The invention discloses a comprehensive treatment method for recycling carbon of a waste lithium iron phosphate battery. The characteristic that graphite component layers in recycled carbon have largespacing, increased defects and impurities including Fe2O3, CuO and Al2O3 is used, a graphite interlayer compound is prepared without adding an insertion layer reagent, and then graphite is peeled offinto graphene nanosheets by low-temperature calcination. The invention can realize the high-added-value recycling of a graphite material in the recycled carbon of the waste lithium iron phosphate battery, at the same time, metal impurities therein can be recycled in the form of chloride, and the method has strong application prospect and feasibility. In addition, the recycling of hydrochloric acid and steam heat can be achieved by the technology, and the method has the advantages of low energy consumption, low cost, and environmental protection. 本发明公开了一种废旧磷酸铁锂电池回收碳的综合处理方法，利用了回收碳中的石墨成分层间距较大、缺陷增多和具有杂质FeO、CuO、AlO的特点，在不需额