【摘要】：觸變性是膏體復雜的流變特性,直接影響膏體料漿的管道輸送阻力,主要與流動速度、流動時間和漿體靜置時間相關。為研究某銅礦全尾膏體料漿在長距離泵送過程中的觸變特性,本文通過設計開展環(huán)管模擬試驗、流變理論分析,研究了流動速度、流動時間、停泵時間等觸變性影響指標對膏體輸送阻力損失的影響規(guī)律。結(jié)果表明:阻力損失與流動時間成反比并最終趨于穩(wěn)定,達到穩(wěn)定狀態(tài)的時間與漿體流量成反比;在低流速時,阻力損失與流速成正比,并隨著流速的增大逐漸趨于線性增長;重啟時的出口壓力與停泵時間成正比,且停泵時間不宜超過4h,以免造成堵管。研究成果對泵送膏體的工業(yè)應用具有一定的指導作用。
[Abstract]:Thixotropy is a complex Rheological property of paste, which directly affects the pipeline transportation resistance of paste slurry, which is mainly related to flow velocity, flow time and slurry static time. In order to study the thixotropic characteristics of whole tailings slurry in a copper mine during long distance pumping, the flow velocity and flow time were studied by designing and carrying out ring pipe simulation test and flow theory analysis. The influence of thixotropy index such as pump shutdown time on the loss of paste transportation resistance. The results show that the resistance loss is inversely proportional to the flow time and finally tends to be stable, and the time to reach a stable state is inversely proportional to the slurry flow rate, and the resistance loss is proportional to the flow rate at low velocity, and tends to increase linearly with the increase of flow rate. The outlet pressure is proportional to the pump shutdown time, and the pump shutdown time should not exceed 4 hours, so as not to cause pipe blockage. The research results have certain guiding effect on the industrial application of pumping paste.
【作者單位】： 中南大學資源與安全工程學院;飛翼股份有限公司;
【分類號】：TD853.34

【相似文獻】

相關期刊論文 前10條

1 王正輝,靳學奇;物料粒度分布對泵送充填膏體性能的影響[J];有色礦山;2000年03期

2 方理剛;膏體泵送特性及減阻試驗[J];中國有色金屬學報;2001年04期

3 周華強,侯朝炯,孫�？�,瞿群迪,陳德俊;固體廢物膏體充填不遷村采煤[J];中國礦業(yè)大學學報;2004年02期

4 趙才智,周華強,瞿群迪,關明亮;膏體充填材料力學性能的初步實驗[J];中國礦業(yè)大學學報;2004年02期

5 趙才智;周華強;柏建彪;強輝;;膏體充填材料強度影響因素分析[J];遼寧工程技術大學學報;2006年06期

6 孫e，

本文編號：2497045