CAJ | 학술논문

采用浮选法,对湖南某地粉煤灰（碳的质量分数为23.12%）进行分选回收碳的试验研究。通过正交试验确定了最优的粗选试验条件：粗浮选时间为5 min,捕收剂（轻柴油）用量为1 100 g/t,起泡剂（FR）用量为800 g/t。浮选试验的工艺流程为＂一粗两精＂。试验结果表明：粉煤灰经浮选后,精矿中碳的质量分数为63.5%,回收率为88.02%,尾矿可达到国家I级和Ⅱ级粉煤灰的标准,可获得良好的经济效益和社会效益。
채용부선법,대호남모지분매회（탄적질량분수위23.12%）진행분선회수탄적시험연구。통과정교시험학정료최우적조선시험조건：조부선시간위5 min,포수제（경시유）용량위1 100 g/t,기포제（FR）용량위800 g/t。부선시험적공예류정위＂일조량정＂。시험결과표명：분매회경부선후,정광중탄적질량분수위63.5%,회수솔위88.02%,미광가체도국가I급화Ⅱ급분매회적표준,가획득량호적경제효익화사회효익。
By means of floatation,an experimental study was made on the separation of unburned carbon from fly ashes in an area of Hunan,whose carbon mass fraction was 23.12%.The optimum roughing conditions were obtained through orthogonal tests that floatation time was 5 min,the dosage of collector(light diesel oil) was 1100 g/t,and the dosage of frother(FR) was 800 g/t.The experiment process was one roughing separation and two concentrating separation.The experiment results showed that after floatation the carbon mass fraction in concentrates was 63.5%,the recovery was 88.02%,and the tailings could reach the 1st and 2nd grade of national fly ash standard,which could create better social and economic benefits.