随着优质无烟煤资源的逐渐枯竭，国内外学者广泛的采用储量较为丰富的低阶煤制取超净煤，但采用常规浮选药剂浮选超细颗粒低阶煤时药耗大，分选性差。为了改善超细颗粒低阶煤浮选效果，以神东超细颗粒长焰煤为研究对象，选取非离子型表面活性剂(曲拉通X-100、司盘-80)和常规捕收剂煤油为原料制备新型复合浮选药剂，采用D-最优混料设计的试验方法，建立了复配药剂不同配比与浮选精煤灰分和产率之间的回归模型;通过因子作用分析和响应分析，研究了曲拉通X-100、司盘-80和煤油配比对浮选精煤灰分和产率的影响规律，并探讨了复配药剂中的因子作用与交互作用;通过优化试验，获得了复配药剂的最佳配比。结果表明:浮选精煤灰分和产率不仅受曲拉通X-100(A)、司盘-80(B)、煤油(C)复配药剂单因子的影响，还受复配药剂因子间交互作用的影响;在药剂配比中B或C因子所占比例较大时，会对精煤灰分和产率产生显著的影响，复配药剂因子作用对浮选精煤灰分和产率影响的大小为:B>C>A;A与B，B与C之间存在显著的交互作用，复配药剂因子间交互作用对精煤灰分和产率影响的大小为:BC>AB>AC;复配捕收剂的最佳配比为:曲拉通X-100体积分数0.7%、司盘-80体积分数1%和煤油体积分数98.3%;在最佳配比条件下通过浮选试验可以得到灰分为1.54%、产率为56.04%的超净煤;在相同试验条件下与常规捕收剂相比，该复配捕收剂具有降低药耗、提高精煤产率和降低灰分的特点，具有较好的浮选效果。

With the gradual depletion of high-quality anthracite resources,the low-rank coals with abundant reserve are proposed to produce ultra-clean coal by scholars at home and abroad. However, when using conventional flotation agents to float ultra-fine particles,the agent consumption is high and the separation is poor. In order to improve the flotation effect of ultrafine particles of low-rank coal,the Shendong long-flame coal with ultrafine particle was investiga- ted in this study. The nonionic surfactants (Triton X-100,Span-80) and conventional collector (kerosene) were used as raw materials for the preparation of new compound flotation agent. The regression models between the ratios of compounding agents and ash and yield of flotation concentrate were established by D-optimal mixing design test. The effect of different ratios of Triton X-100,Span-80 and kerosene on the ash and yield of flotation concentrate were studied and the effect and interaction of factors in compounding agents were discussed by factor analysis and response analysis. By optimizing the test,the optimal ratio of the compounding agent was obtained. The results show that the ash content and yield of flotation concentrate are not only affected by the single factor of the compounding agents of Triton X-100 (A), Span-80 (B) and kerosene (C),but also by the interaction between the compounding agents. When the proportion of B or C is high,it will have a significant impact on the ash content and yield of flotation concentrate. The effect of the compounding agent on the ash content and yield of flotation concentrate are:B>C>A. There are significant interactions between A and B,B and C,the specific effect of the interaction between the compounding agents on the ash content and yield of flotation concentrate are:BC>AB>AC. The best formula for the compound collector was determined to be as follows:0. 7% of Triton X-100,1% of Span-80 and 98. 3% of kerosene. The ultra-clean coal with 1. 54% of ash content and 56. 04% of yield can be obtained in the flotation experiments under the optimal formulation conditions. Compared with the conventional collectors under the same test conditions,the compound collector which had a better flotation effect had the advantages of reducing the agent consumption,improving the yield and reducing the ash of flo- tation concentrate.