将这段话翻译成学术英语对破碎至05mm的中煤进行浮选工艺与条件探索。红外谱图表明煤油是良好的捕收剂可以物理吸附在中煤表面增加疏水性。五因素五水平正交实验结果表明煤油和仲辛醇用量是显著影响粗选结果的因素确定其他因素水平后进行单因素药剂实验和双因素药剂浮选实验的探索最终在一粗两精的浮选流程后获得产率2947灰分973的精煤满足炼焦精煤的要求解离再选后一吨中煤可获利44238元利润率为7781经济效益显

Exploration of flotation process and conditions for fine coal with particle size up to 0.5mm was conducted. Infrared spectrum analysis indicated that kerosene was an effective collector, which physically adsorbed onto the surface of fine coal and increased its hydrophobicity. Orthogonal experiments with five factors and five levels revealed that the dosages of kerosene and octanol significantly affected the results of rough selection, and further single-factor and two-factor flotation experiments were conducted after determining the levels of other factors. Eventually, a two-stage flotation process was developed to obtain a yield of 29.47% and an ash content of 9.73% for the clean coal, which met the requirements for coking coal. Disaggregation and reselection processes could remove almost all quartz and part of kaolinite from the clean coal, and profit of 442.38 yuan per ton of coal and a profit margin of 77.81% could be achieved. The analysis of clean coal showed that the effective particle size of the coal samples mainly ranged from 100 to 500um, and the relative size order of effective particle size was rough flotation clean coal < fine coal < flotation tailings. No incomplete crushing or overcrushing was observed.