经分析发现，煤质变差，煤泥量大幅度增加是影响精煤产率的关键。
The key reasons of lowing of cleaned ratio coal were bad coal quality and large increase in sludge.
笔者对煤泥超声处理前后浮选的精煤产率、浮选脱硫效果、浮选速度等方面进行了试验研究。
The cleaned coal yield before and after ultrasonic treatment, the effect of flotation desulfurization and flotation speed were studied.
通过对离心液末精煤处理工艺的研究，回收离心液中损失的末精煤，以提高精煤产率和企业经济效益。
Losing fine cleaned coal is recovered by the study of fine cleaned coal treatment technology in centrifugal liquid, which would improve the cleaned coal yield and enterprise economic benefit.
建议要平衡好精煤灰分与产率的关系，并拟进行浮选系统的技术改造工程以进一步提高精煤产率及经济效益。
So the relations of washed coal ash and ratio must be balanced, and technology reformation works of floatation system would be done to increase ratio and economic benefits.
结果表明，添加聚丙烯酰胺可以明显提高精煤产率、尾煤灰分，亦可以提高煤泥水澄清度，显著加快过滤速度，降低滤饼水分。
The result indicated that it can enhance the yield of cleaned coal, increase the slime water clarity, accelerate rate and reduce moisture content in press cake by adding PAM.
2PGL高强力双齿辊破碎机投入运行以来，不仅满足了洗选工艺对粒度的要求，也提高了精煤产率，创造了较高的经济效益。
Using ZPGL high-strength double toothed roll breaker not only satisfied with size demand for washing processing, but also improve cleaning coal rate and creates higher economy benefit.
捕收剂用量的加大，可使电化学浮选精煤的产率增加，降硫率减小。
The more collecting agent, the higher flotation concentration recovery of coal electrochemical flotation, the lower percentage of desulfurization.
捕收剂用量的加大，可使电化学浮选精煤的产率增加，降硫率减小。
The more collecting agent, the higher flotation concentration recovery of coal electrochemical flotation, the lower percentage of desulfurization.
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