调整剂对高灰难选煤浮选效果的影响研究

 我国煤泥比例增大、可选性变差，浮选效果难以提升。通过对河北唐山某选煤厂浮选入料的物相分析、粒度分析和浮沉分析考察了该高灰难选煤样的可浮性；在浮选试验中添加六偏磷酸钠、水玻璃、羟甲基纤维素（CMC）、苛性钠等不同用量的调整剂，根据试验结果分析了不同调整剂对高灰细泥难选煤的作用效果及机理。研究表明，调整剂能有效改善浮选效果，当CMC用量为40g/t时对该煤泥浮选效果最好。

Study on Regulator Affected to Floatation Effect of High Ash and Difficult Preparation Coal

In view of the current situation that the wash ability of the increasing fine coal is getting worse, the flotability of high ash, difficult-to-float fine coal from Tangshan Hebe was investigated through phase analysis, grain size analysis and density analysis. Carried out the flotation tests research of join Sodium hexametaphosphate, sodium silicate, the CMC and sodium hydroxide with different dosage conditioning agent, and the action mechanism of conditioning agent and the test results were analyzed as well. Studies show that adding conditioning agent can effectively improve the flotation effect, when the CMC dosage is 40g/t for the coal slurry flotation, the result of flotation is best.