高灰细粒煤泥正交优化浮选实验  

Orthogonal Optimization Flotation Experiment of High Ash and Fine Coal Slime

作　　者：申世钰 李帅 王怀法[1,2] 祁占海 Shen Shiyu;Li Shuai;Wang Huaifa;Qi Zhanhai(College of Mining Engineering,Taiyuan University of Technology,Taiyuan,Shanxi,China;State Key Laboratory of Mineral Processing,Beijing,China;Zhongyu Taide Coal Co.,Ltd.,Ordos,Inner Mongolia,China)

机构地区：[1]太原理工大学,矿业工程学院,山西太原030024 [2]矿物加工科学与技术国家重点实验室,北京100000 [3]中钰泰德煤炭有限公司,内蒙古鄂尔多斯017000

出　　处：《矿产综合利用》2023年第6期164-168,共5页Multipurpose Utilization of Mineral Resources

基　　金：矿物加工科学与技术国家重点实验室开放基金(BGRIMM-KJSKL-2020-14)。

摘　　要：这是一篇矿物加工工程领域的论文,研究了内蒙古鄂尔多斯市凯达煤样的粒度特征和矿物组成,并在前期单因素实验结果的基础上,采用正交实验考查了叶轮转速、充气量、捕收剂和起泡剂的用量对浮选完善指标和可燃体回收率的影响。最终采用“一粗一精”浮选工艺流程对正交实验的较优方案进行进一步研究,结果表明:各因素主次顺序为起泡剂用量>捕收剂用量>叶轮转速>充气量;正交实验所得的较优方案为A_(2)B_(2)C_(3)D_(3),即起泡剂用量800 g/t、捕收剂用量1600 g/t、矿浆浓度60 g/L、叶轮转速1800 r/min、充气量0.175 m^(3)/(m^(2)/min);在较佳条件下,经过“一粗一精”浮选工艺流程,最终得到了产率49.41%、灰分8.70%的精煤和产率50.59%、灰分74.15%的尾煤。This is an essay in the field of mineral processing engineering.In this essay,the particle size characteristics and mineral composition of the Kaida coal sample in Ordos City,Inner Mongolia were studied.Meanwhile,based on the results of the previous single factor test,the orthogonal test was used to investigate the impeller speed,aeration amount,the dosage of the collecting agent and foaming agent on the flotation perfection index and the recovery rate of combustible material.Finally,the"one roughing and one cleaning"flotation process was used to further study the optimal scheme of the orthogonal experiment.The results show that the primary and secondary order of the factors is the dosage of foaming agent>the dosage of collector>the impeller speed>the aeration dosage.The optimal scheme obtained from the orthogonal experiment is A_(2)B_(2)C_(3)D_(3),that is,the dosage of frother is 800 g/t,the dosage of collector is 1600 g/t,the slurry concentration is 60 g/L,the impeller speed is 1800 r/min,and the aeration dosage is 0.175 m^(3)/(m^(2)/min).Under the optimal conditions,after the"one roughing and one cleaning"flotation process,a clean coal with yield of 49.41%,ash of 8.70%,and a tailing coal with yield of 50.59%,ash of 74.15%were obtained.

关 键 词：矿物加工工程 高灰细粒煤泥 浮选 正交实验 一粗一精 

分 类 号：TD94[矿业工程—选矿]