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科技导报  2015 

超大能力超细全尾砂超长距离管道自流输送技术

DOI: 10.3981/j.issn.1000-7857.2015.12.009, PP. 56-60

Keywords: 超大能力充填系统,超细全尾砂,超长距离,自流输送

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Abstract:

为解决司家营铁矿超大能力超细全尾砂超长距离管道自流输送难题,在研究超细全尾砂管道自流输送、骨料颗粒沉降堵管及管道沿程阻力损失特性的基础上,利用Fluent软件对超细全尾砂超长距离大管径的自流输送特性进行分析。结果表明超细粒径全尾砂易于悬浮,大管径输送可有效降低沿程阻力损失。工作流速为2.95m·s-1、管道内径为155mm的超细全尾砂浆体的垂直脉动速度分量Sv=0.24cm·s-1远大于尾砂的干涉沉降速度0.034cm·s-1,最大允许充填倍线Nmax高达10.6,充填料浆可均匀悬浮顺利自流至采空区。

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