开滦地区煤泥浮选的搅拌调浆实验研究

 摘要:文章针对开滦地区的煤泥进行分析，得出该地区煤泥属于高灰难选细粒煤泥。为了解决该地区某矿煤泥浮选矿化效果不好的问题，通过调节搅拌速度、矿浆浓度和搅拌时间来研究浮选矿化效果，并利用正交试验寻找出最佳的矿浆矿化条件。实验结果表明：当搅拌速度在1950r/min、矿浆浓度在80g/l和搅拌时间在4min时，浮选效果较好，精煤产率提高了6%左右，灰分降低了2%左右，并且找出了三因素的主次关系。对该地区的煤泥分选具有重要的指导意义。

Experimental Study on Slurry Mixing and Preparation for Slime Floatation in Kailuan Mining Area

Abstract: The article analysised the slime of Kailuan，and the result was that slime there was fine high-ash and refractory. In order to solve bad effect of floatation mineralization of the slime there, we tried to research floatation mineralization effect by adjusting agitation speed, pulp consistency and agitation time. Then though orthogonal test, we found the best conditions of mineralizing of slurry. The experimental result showed that when rotational speed was 1950r/min and stirring time was 4min, flotation effect was very good, yield of clean coal increased about 6%, ash decreased about 2%. Then we found the primary and secondary relation among the three factors. It is of guiding significance to the slime separation there.