提出了一个处理流程,对高烧损(LOI)飞灰中未燃炭进行选择性分离。使用泡沫浮选进行选择性分离需要长的浮选时间和高药剂成本。已经开发了专利药剂系统来解决这些局限性。在实验室和半工业试验结果基础上提出了处理流程,从F级飞灰中生产二种有用产品——低烧损灰和适于再燃烧或进一步提高品位的高炭产品。 A process was proposed for the selective separation of unburned carbon from high burnout (LOI) fly ash. Selective separation using froth flotation requires long flotation times and high drug costs. Patented pharmaceutical systems have been developed to address these limitations. Based on laboratory and semi-industrial test results, a process was proposed to produce two useful products from class F fly ash - low-burning ash and high-carbon products suitable for re-combustion or further upgrading of grades.