高浓度充填料浆滚筒磨损实验研究
|
摘要
在分析管道磨损影响因素的基础上,通过设计滚筒装置对料浆对管壁的磨损展开定量化研究。结果表明,在保持料浆固相质量分数80%、滚筒转速1.5m/s时,尾矿比沙对筒壁的磨损相对严重;当固相质量的50%由沙更换为尾砂后,Ⅰ类磨损率将在原来的基础上增加17%,Ⅱ类磨损率增加15.7%;全部采用尾矿制作的料浆,其对滚筒的Ⅰ类磨损率比全部使用沙制作的料浆增加11.1%,对筒壁的Ⅱ类磨损率比之会增加7%;使用自来水制作料浆,其对筒壁的Ⅰ类磨损率比使用矿用水时增大2.4%,对筒壁的Ⅱ类磨损率比之增大4.5%;这表明,由矿用水和自来水两者配成的充填料浆对管壁的磨损无明显差别。
Based on the analysis of the influencing factors of pipeline wear,the quantitative research on the wear of slurry on the pipe wall is carried out by designing a roller device. The results show that when the solid content of slurry is kept at80% and the rotating speed of drum is 1. 5 m/s,the abrasion of the roller wall caused by tailings is relatively serious than that of sand. When 50% of solid phase mass is changed from sand to tailings,the class I wear rate increases by 17% and the class Ⅱ wear rate increases by 15. 7%. The class I wear rate of the slurry made of tailings is 11. 1% higher than that of the slurry made of sand,and the class Ⅱ wear rate of the slurry made of sand is 7% higher than that of the slurry made of sand. When tap water is used to make slurry,the class I wear rate of roller wall is 2. 4% higher than that of mine water,and the class Ⅱ wear rate of roller wall is 4. 5% higher than that of mine water. The results show that there is of no obvious difference in the wear of pipe wall between the filling slurry made of mine water and tap water.
Based on the analysis of the influencing factors of pipeline wear,the quantitative research on the wear of slurry on the pipe wall is carried out by designing a roller device. The results show that when the solid content of slurry is kept at80% and the rotating speed of drum is 1. 5 m/s,the abrasion of the roller wall caused by tailings is relatively serious than that of sand. When 50% of solid phase mass is changed from sand to tailings,the class I wear rate increases by 17% and the class Ⅱ wear rate increases by 15. 7%. The class I wear rate of the slurry made of tailings is 11. 1% higher than that of the slurry made of sand,and the class Ⅱ wear rate of the slurry made of sand is 7% higher than that of the slurry made of sand. When tap water is used to make slurry,the class I wear rate of roller wall is 2. 4% higher than that of mine water,and the class Ⅱ wear rate of roller wall is 4. 5% higher than that of mine water. The results show that there is of no obvious difference in the wear of pipe wall between the filling slurry made of mine water and tap water.
引文
[1]梅晓,李兴华,孔贺,等.膏体充填管道磨损机理分析[J].煤炭技术,2016,35(7):274-276.
[2]孔贺,张新国,王昌祥,等.矸石充填开采管道磨损影响因素分析[J].煤矿安全,2016,47(3):215-217,221.
[3]刘原勇,陈云华,朱翠雯.充填输送管道冲蚀磨损分析[J].润滑与密封,2015,40(7):106-109.
[4]张德明.深井充填管道磨损机理及可靠性评价体系研究[D].长沙:中南大学,2012.
[5]张钦礼,崔继强,郑晶晶,等.充填钻孔内管道磨损机理及易破损位置的确定(英文)[J].中国有色金属学报,2011,21(11):2503-2507.
[2]孔贺,张新国,王昌祥,等.矸石充填开采管道磨损影响因素分析[J].煤矿安全,2016,47(3):215-217,221.
[3]刘原勇,陈云华,朱翠雯.充填输送管道冲蚀磨损分析[J].润滑与密封,2015,40(7):106-109.
[4]张德明.深井充填管道磨损机理及可靠性评价体系研究[D].长沙:中南大学,2012.
[5]张钦礼,崔继强,郑晶晶,等.充填钻孔内管道磨损机理及易破损位置的确定(英文)[J].中国有色金属学报,2011,21(11):2503-2507.