煤泥压滤中助滤剂的应用研究
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摘要
为了提高赵庄选煤厂压滤机的处理能力,对压滤入料进行了分析,并通过添加助滤剂的方法来提高煤泥压滤速度。实验室抽滤试验结果表明,随着各助滤剂用量的增加,过滤的速度逐渐加快,其中FM-1与聚合氯化铝这2种药剂的助滤效果最好。通过对不同FM-1药剂用量下的絮凝体进行分形维数分析,寻找到的最佳的药剂用量与验室抽滤试验结果相一致。最终的工业试验结果表明,FM-1药剂具有较好的助滤效果,能将压滤机上料时间从不加药的643s减少到430s,而且其用量约为聚合氯化铝用量的1/6,大幅度降低了药剂添加环节的工作量,因此可选用FM-1作为该厂的助滤剂。
In order to improve processing capacity of the press filter in Zhaozhuang coal preparation plant,the authors analyzed filter pressing feeding process,and improve coal slime filter pressing speed by adding filter aid.The suction filtration experimental results showed that the filtration speed increased with the increased of the amount of each filter aid.FM-1 and polyaluminum chloride had best filtration effect.According to conducted fractal dimension analysis of flocculating constituent in FM-1 different dosage,the optimal dosage of FM-1 was consistent with the results of the laboratory filtration test.The final industrial test results showed that the FM-1 agent had better filtration effect,reduced the feeding time of the filter press from 643 sto430 s,and the dosage was about 1/6 of the amount of polyaluminum chloride,which greatly reduced the workload of adding process,thus FM-1 agent was selected as the best filter aid in the plant.
In order to improve processing capacity of the press filter in Zhaozhuang coal preparation plant,the authors analyzed filter pressing feeding process,and improve coal slime filter pressing speed by adding filter aid.The suction filtration experimental results showed that the filtration speed increased with the increased of the amount of each filter aid.FM-1 and polyaluminum chloride had best filtration effect.According to conducted fractal dimension analysis of flocculating constituent in FM-1 different dosage,the optimal dosage of FM-1 was consistent with the results of the laboratory filtration test.The final industrial test results showed that the FM-1 agent had better filtration effect,reduced the feeding time of the filter press from 643 sto430 s,and the dosage was about 1/6 of the amount of polyaluminum chloride,which greatly reduced the workload of adding process,thus FM-1 agent was selected as the best filter aid in the plant.
引文
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[2]D.Taoa,B.K.Parekhb,J.T.Liuc,et al.An investigation on dewatering kinetics of ultrafine coal[J].International Journal of Mineral Processing,2003(3)
[3]范肖南,郜超.压滤过程影响因素的试验研究[J].选煤技术,2010(4)
[4]李满,徐海宏,任守政.煤用助滤剂的研究状况及发展方向[J].煤炭科学技术,2002(5)
[5]任建民,刘磊,樊合高.选煤厂浮选精煤助滤脱水实验研究[J].洁净煤技术,2014(6)
[6]任伟鹏,董宪姝,魏文珑等.选煤工业中常见助滤剂种类及其应用[J].中国煤炭,2009(4)
[7]邓玉珍.选矿药剂概论[M].北京:冶金工业出版社,1994
[8]郝亚洲,王金龙,张德宏.新集一矿选煤厂助滤剂的选择与应用[J].选煤技术,2011(1)
[9]罗晓玲,郑国涛,王雪伟.表面活性剂对煤泥离心过滤脱水的助滤研究[J].煤炭加工与综合利用,2015(9)
[10]Naureen Alam,Orhan Ozdemir,Marc A.Hampton,et al.Dewatering of coal plant tailings:Flocculation followed by filtration[J].Fuel,2011(1)
[11]谷妲琳,微生物絮凝剂分形特性的研究[D].湖南大学,2012
[12]赵海英,杨光俊,徐正光.图像分形维数计算方法的比较[J].计算机系统应用,2010(3)
[13]李振亮,张代钧,卢培利等.活性污泥絮体粒径分布与分形维数的影响因素[J].环境科学,2013(10)
[14]李志红,杜兵,田毓仁等.化学助滤剂对微细粒煤泥的助滤作用研究[J].选煤技术,2009(2)